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Model specific boards => Golf mk3 => Golf mk3 how to guides + info => Topic started by: Mikester on 29 July 2009, 23:16

Title: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Mikester on 29 July 2009, 23:16
Ok, so its getting more and more hot topic about doing engine conversions, and i for one am going to be carrying one out. I have not found anywhere really here or on other forums that compiles anything together. The simples ins and outs could be enough to put some people off, and the realisations or cost etc. So thought i would stick it all down here.

Essentially if you want to do a 16v/Vr6/1.8t/R32/other conversion into a mk3, if your starting with anything lesser than an 8v GTI then it would be sensible to just buy a mk3 8v to start, they can be had cheap enough (although in that case you may as well just buy a 16v or vr6)

1. Exhausts. The 8v has a smaller exhaust than the 16v/vr6/1.8t/R32. If you dont upgrade to the larger bore the engine will essentially overheat, and get huge back pressure. Custom exhausts cost £399 from powerflow, cat back, you would then need either a decat(illegal), sports cat (roughly £150) or a standard cat. Of course you can get a standard vr6 jobbie which will do you for all of the conversions, but that in my eyes is the cheaper, and slighlty pointless option.

2. Clutches. Now the 8v comes with a cable clutch, the 16v and Vr6 comes with a hydrolyic clutch. There is such a thing as a cable to hydro conversion peice, although i have been informed they are less than crap! So obviously 16v to Vr6/ 16v+vr6 to 1.8t involves no clutch change, but 8v to 16v/vr6/1/8t would involve swapping the pedal box and fitting a hydro clutch into the car.

This said you COULD also just keep the standard 8v gearbox and bolt the 16v/1.8t engine onto this with the 8v flywheel. This would give you different ratios to the 16v box, and might not be the best, and will also mean you dont get the top speed.

3. Engine fitment. The 8v/16v/vr6/1.8t will all bolt straight in, although you would need the correct engine mounts, or even an uprated one to help with the weight and power.

4. The mk3s come with a cable throttle, which is interchangable, so as for converting 8v 16v and vr6 you shouldnt have a problem there. If you want to convert to a 1.8t the only 1.8t that i know off is the AGU engine to have a cable throttle, this means you will be able to use your throttle. The other engines including the more popular audi BAM engine doesnt have a cable throttle, so you have to buy a new throttle body, which can be had from Qpeng for £50 when buying a conversion loom.

5. Wiring any mk3 engine into a mk3 should be a plug and play job as they were desigined to be in that car. Aslong as you have the engine loom you can just plug that into the fusebox. Although you will need the correct ECU and clocks for the engine you are installing.

A 1.8t conversion can either be done with standalone managament, or with a plug and play conversion loom from "qpeng". They charge £800 to convert the 1.8t and mk3 loom to plug and play with a mk3 car. This uses a seperate ECU, and gives you a remap. This means it is not neccesary to get the 1.8t ecu.

Ignition is immobilised with a chip in the key. With all mk3 engine swaps you either need to swap your ignition and keys locks to the ones that the car with the ECU you are using came out of. OR get the ecu you are going to be using de-immobilised.

With the 1.8t conversion i believe it still uses the mk3 ecu as well as the conversion ecu, so there will be no issues.

6. Fuel pumps, they dont need changing providing you have an 8v upwards, that one will cope just fine until you start running big power.

Other things to bare in mind are your brakes, if you start with a 8v gti with the earlier 280mm brakes, and stick a 1.8t running 230bhp it would be advisable to at least get some good pads and discs, or check out the 312 upgrade options in this thread here:

http://www.golfgtiforum.co.uk/index.php?topic=94314.0

Costs of the conversions depend on wether you will be fitting it yourself, or paying someone else.

Fitting yourself into an 8v:

16v and vr6 could be done for £1000, with the 16v being a little less, due to engine prices being a bit less.
1.8t a conversion COULD be done for £2000 or less, buying plug and play loom and downpipe from Qpeng, and getting the right priced engine.

If you want a company to fit the engine, then well add about £2000 labour onto those charges at least.

Hope some of this info helps, its a bit vague, and im sure i have missed things, and maybe got a few facts wrong. But for people who think the hardest part is getting the engine in, thats not true. But hopefully people will now be aware of the other niggly things such as clutchs, throttles, and the fact that the most expensive part of the conversion is going to be the exhaust system!
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 29 July 2009, 23:24
Sticky
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: boneybradley on 29 July 2009, 23:26
I will add a couple of things

Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 29 July 2009, 23:32
As far as im aware you can use the 1.8t on the 8/16v boxes, but not VR.

The 16v fits on an 8v gearbox.

The Vr6 wont fit on an 8v box.

The Vr6 and R32 are interchangable. But as boney says, 8/16v wont fit a VR6 gearbox.

Also an R32 gearbox wont fit on Mk3 mounts. But an R32 engine will fit on a Vr6 box, and on the mk3 engine mounts.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 29 July 2009, 23:34
Can you use a 16v/vr6 box on a 8v?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 29 July 2009, 23:36
Well the 8v is cable clutch, so you would need to convert the pedal box to the hydro one, unless u fitted a conversion peice.

The 16v would fit, the VR6 wouldnt.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Wayne on 29 July 2009, 23:37
Excellent info.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 29 July 2009, 23:40
Hoping it throws a bit more light on the subject, think some are jaded by the "plug and play" phrase. lol.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: boneybradley on 29 July 2009, 23:48
Well the 8v is cable clutch, so you would need to convert the pedal box to the hydro one, unless u fitted a conversion peice.

The 16v would fit, the VR6 wouldnt.

If you use the seat ibiza clutch set up you can fit the 16v box to the 8v, and the vr6 box wont fit either 4cyl cars unless you swap bell housings round.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 29 July 2009, 23:50
Well the 8v is cable clutch, so you would need to convert the pedal box to the hydro one, unless u fitted a conversion peice.

The 16v would fit, the VR6 wouldnt.

If you use the seat ibiza clutch set up you can fit the 16v box to the 8v, and the vr6 box wont fit either 4cyl cars unless you swap bell housings round.

Think the point to raise here is, if you find a 16v box cheap to replace your broken 8v. In the long run its not cheaper. As i cant see an other reason to want to fit a 16v box to an 8v, unless maybe you want to eaton the engine or something.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: boneybradley on 29 July 2009, 23:52
best way to say it is...if you want to fit the 02a type box (16v to you and me) then get one from a seat ibiza as it will be easier to fit and stronger than the 8v box  :wink:
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 30 July 2009, 09:22
best way to say it is...if you want to fit the 02a type box (16v to you and me) then get one from a seat ibiza as it will be easier to fit and stronger than the 8v box  :wink:

yep.

i can add that cable clutch conversion on the hydro clutch ftw! so easy to do and only requires a part from the dealer. cant remember what the part no is though.....

its off a transporter and i think a passat too.

also i'd say 280mm brakes will be more than suffice for road use.

oh and as for converting a drive by wire 1.8t engine, just need a mk3 8v gti throttle body, thats all that qpeng supply anyway. save yourself some money and get a used for like £5.

i agree, the 1.8t conversion can be done for under £2000, but along the way it is worth replacing a lot of parts with new ones and also upgrading lots of stuff. so i'd say be prepared to spend £3000-£4000.

if anyone wants any more info or has any specific questions about the 1.8t conversion, please ask!

Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 30 July 2009, 10:47
also forgot to add:

if you use qpeng for the 1.8t you dont use the mk3 ecu.

1.8t need mk3 16v engine mounting brackets. the 8v ones are slightly smaller and dont give as much engine clearance in the bay.

and yeah i agree, putting the engine in is actually not that bad, its all the little bits you dont think about that are the problem and finding the correct part that will do the job.

good effort mike :afro:


Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: omex_uk on 30 July 2009, 10:58
really helpful thread here guys, cheers  :smiley:
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 30 July 2009, 11:12
not promising anything.....

but i want to refine a list im making at the moment for parts needed for a 1.8t conversion, including rough prices, part numbers, etc. hopefully be able to through some pics in and a bit of a write up and slam it in a word document once im done. then i can make thread and get it sticky up here with it. would be good for me to have something like this anyway.

LL ;)
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 30 July 2009, 12:32
Thanks for clearing up some of the 1.8t stuff there lazy :) Good work.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: thai-wronghorse on 08 August 2009, 08:10
Very interesting and useful.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 19 August 2009, 16:10
What do you do about clocks? Say i'm going from a 8v to a VR6 what would I do for that? Use the 8v clocks of VR6 clocks?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 20 August 2009, 00:16
Vr clocks. You just swap em over. With the VR6 engine, engine loom, and ecu. the car would essentially be a factory VR. And once delcared, you wouldnt know the difference.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mr.Tom on 27 August 2009, 09:21
Just a note about 8v 2.0l. I am told that they have a hydraulic clutch, rather than the cable clutch. Or at least, that is what I am told about my late 96 reg 8v 2.0 gti. Maybe someone could confirm this?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Wayne on 27 August 2009, 09:24
Just a note about 8v 2.0l. I am told that they have a hydraulic clutch, rather than the cable clutch. Or at least, that is what I am told about my late 96 reg 8v 2.0 gti. Maybe someone could confirm this?

All 8v's were cable clutch.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 27 August 2009, 11:16
Just a note about 8v 2.0l. I am told that they have a hydraulic clutch, rather than the cable clutch. Or at least, that is what I am told about my late 96 reg 8v 2.0 gti. Maybe someone could confirm this?

All 8v's were cable clutch.

+1
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mr.Tom on 27 August 2009, 20:24
Yeah. had it confirmed, at a cost of £105 for a new one fitted today  :sick:. So I also +1 that. Hehe.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: haf1zur on 28 August 2009, 12:59
Ok guys, read all three pages but still a bit confused

I have a mk3 gti 2.0 8v 1996 model, the engines a bit sh!te, but does its job, i have the chance to fit an R32 engine into it, couple of questions:

1: would i be able to use vr6 mounts to fit the engine?
2: would i need the mk4 r32 gearbox? and if so, would the vr6 engine mounts suffice?
3: last but not least, the ecu, a mk4 ecu or standalone?

thanks in advance

hafizur
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 28 August 2009, 15:07
^^^^ i'd go standalone, but sounds like something for mikester to answer.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 28 August 2009, 15:46
You would use the R32 engine with a VR6 Gearbox.

The R32 will fit on the VR6 mounts but will need the brackets adjusting as i have heard the engine sits high and you wont be able to shut the bonnet.

Obviously then the VR6 gearbox will fit in fine, and can use your drive shafts etc.

ECU wise i have heard that you can butcher the VR6 loom and the R32 loom and use the VR ecu, but it would be best to go standalone.

What you are looking to do is a VR6 conversion, all that is different is the wiring. Remember the R32 is just a 3.2 VR6 ;)

You would also need to upgrade to a hydrolyic clutch and pedal box.

Convert the 8v to a VR6 basically, but just bolt an R32 engine in, not a VR6.

Dub power do a conversion exhaust manifold, then you would need a new exhaust from the manifold back. VR6 jobbie.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: B-chi on 29 August 2009, 17:26
I'm looking at getting an engine conversion.

Speaking to storm they say it's £2,000 cheaper if you start with a vr6 as oppossed to an 8v as the 8v is cable not hydraulic.

There R32 conversion puts out 290bhp. They did suggest putting a 225 TT engine in which they get upto about 270bhp. This is the route I shall be taking in my 8v.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 29 August 2009, 23:38
It certainly doesn't cost £2000 to convert to hydro clutch!!!
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Wayne on 30 August 2009, 00:09
It certainly doesn't cost £2000 to convert to hydro clutch!!!

+1 thats mad.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: B-chi on 30 August 2009, 14:40
I guess not, but the prices I was given by storm to convert a 8v to R32 & a vr6 to R32 we're £2,000 different.

So it would still be cheaper to spend £1500 on a descent vr6 to convert to an R32 rather than using an existing 8v, unless you can obviously do all the work yourself.

So for me with an 8v that I wanna keep, the audi TT 225bhp works out to be only 20bhp less than an R32 & £1500 cheaper too.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Shady Pioneer on 30 August 2009, 16:46
If you're putting the Audi 225 engine in, can't you remap that to something like 260 anyway?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 30 August 2009, 19:05
Yeah, the bam engine comes with a KO4 turbo i believe.

Although it is said that you are better with the AGU engine, and adding a bigger turbo.

APPARENTLY the AGU engine is a better engine to start with.

Plus also BAM's cost stupid amounts of money to buy.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 30 August 2009, 19:07
I guess not, but the prices I was given by storm to convert a 8v to R32 & a vr6 to R32 we're £2,000 different.

So it would still be cheaper to spend £1500 on a descent vr6 to convert to an R32 rather than using an existing 8v, unless you can obviously do all the work yourself.

So for me with an 8v that I wanna keep, the audi TT 225bhp works out to be only 20bhp less than an R32 & £1500 cheaper too.

You will not get a decent VR6 for £1500. If i was going to convert any car to an R32 i would want to have not a "decent" car, but a "show standard" car. That means when you go to view it you dont get the "its a 12 year old car so what can you expect". The car is going to have to handle a lot of power, and also stop.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: B-chi on 31 August 2009, 09:36
When it leaves storm it's around the 270bhp mark.

Alll you need is a descent shell as it'll have new engine which will be heavier so you'll upgrade suspension, more power so upgrade brakes, new exhaust.

I'm changing most things on my car ready for when I get it done. So new everything practically. It won't be a show car but will be f-ing tidy.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 02 September 2009, 10:17
i'd spend the extra and get an r32. for the xtra power and the AWESOME SOUND!!!

btw, you dont have to go hydro clutch. but if you are going to (probs better) it aint hard, just all the stuff from the pedal box to the box and bolt it on.

LL ;)
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: B-chi on 02 September 2009, 17:15
I wouldn't know where to start mate so best off leting storm crack on with it!
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: MK3TDi1996 on 04 September 2009, 09:17
Hiya guys,

Anyone done a diesel conversion?  ie; 1.9tdi -> 2.5tdi?

Or any diesel conversion at all?

Thanks
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 04 September 2009, 12:46
Put a PD engine in it, you are prob going to be the only on on here to ever do a mk3 conversion like that.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 04 September 2009, 19:36
Put a PD engine in it, you are prob going to be the only on on here to ever do a mk3 conversion like that.

i heard that PD conversions are really hard to do!! but i dont know anything about them, so i will leave it there.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Adam on 04 September 2009, 23:48
I heard 1.8t are really hard to do!!!!! When is yours done and when can I see it?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 06 September 2009, 18:39
I heard 1.8t are really hard to do!!!!! When is yours done and when can I see it?

very soon and then once its done i will back on the road :evil: hope to get it to meets/shows, so might be able to see it some time soon.

would be tempted to do another now i know what to do, but start with a mk3 gti 16v time.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: diver705 on 07 September 2009, 08:29
Hi there, Ive got a mk 3 gti 8v and have a dillema, dont know wether to do a vr6 conversion or tune the hell out of mt 8v. The engine is sweet and box covering 14,000 miles since rebuild. wqas going to fit piper cam kit, induction kit, 8mm ht leads power boost valve full stainless system inc decat lighten flywhell and possibly turbo, or, should i fit a vr6. Done these mods on pervious cars but never vr6 engine and box transplant what is realy involved in doing it. Thanks guys.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: B-chi on 07 September 2009, 10:13
Supercharger. Vroom vroom
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: diver705 on 07 September 2009, 11:19
could i but g60 head up onto my 2.0 8v bottom end :evil:
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 07 September 2009, 11:27
Eaton the 8v, or convert to a VR6.... Its a hard choice.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: diver705 on 07 September 2009, 12:28
are the eatons that good then, what sort of power they push out do you know. Trying to talk my m8 out off getting one of them e-ram electric superchargers. :laugh:
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: Mikester on 07 September 2009, 12:32
Those electric "superchargers" slow your car down if anything.

Charged 8v engine (which will need work done to take charger) 160-180bhp

Charged VR6 engine (that can have it bolted on, no internal worked needed) 250-300bhp (and a better sound)
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: diver705 on 07 September 2009, 14:19
What internal work would 8v require any ideas.
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: LazyLunatic on 09 September 2009, 15:02
2.0 8v and charge it, not been done many times and good to see something difference, plus you got the engine there ready :)

ohh but i would say 20vt instead of vr :D :D :D
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: bored_Welsh_lad on 10 September 2009, 11:54
What internal work would 8v require any ideas.

depends on the boost you are running, an m45 is only good up to 10psi, on a standard pulley it produces 5psi of boost... this can be run on standard internals with no issues..
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: bored_Welsh_lad on 10 September 2009, 11:56
could i but g60 head up onto my 2.0 8v bottom end :evil:

why bother.. if your looking at the 8v modified without the charger as in previous posts, look at getting a x-flow head off a mk4 and run itb's
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: bored_Welsh_lad on 10 September 2009, 12:04
Those electric "superchargers" slow your car down if anything.

Charged 8v engine (which will need work done to take charger) 160-180bhp

Charged VR6 engine (that can have it bolted on, no internal worked needed) 250-300bhp (and a better sound)

not true mike, the only realistic 8v we have to go off is the one that was built by alldubs for boxman.. this was a load of bullsh!t.. he was running lowered compression with a standard pulley which was not needed, running a standard ecu which causes major issues as it cant handle boost, running 440cc injectors which were overkill and running an m45 like myself.. which is as you say only suitable up to 180-200 brake.. the turbo boys out in america are hitting 300 brake on standard internals and an m62/m90 application should be able to provide the boost levels required to see high power..

Boxmans car is quoted as seeing 10psi on a standard pulley, this is bollucks, the 10psi is a backfill of pressure as the head on the 8v chokes at 5k and thus the boost builds up.. the issues with the conversion to see bigger power mean sorting out the exhaust manifold and the head.. a decent flowing head and manifold will open up the car to seeing much better power.

Discussions with nando recently have seen 8v testing also seeing much better power from a decent cam setup.. so if your really keen on doing the conversion to see big power i would say..

start with a minimum of an m62 if you want over 200 brake.. look to have your head ported and pick up a cam, not too lairy though as boosted applications dont like them.. anything over 5psi will require the compression lowering.. to do this you can run stacked headgaskets.. before people kick off about this.. wolf aka Toyotec is seeing big numbers on his valver on stacked hg's and has had no issues.. he even run the same headbolts as he removed.

hope this helps.. btw i am in the middle of doing this conversion, my car is going down to nando the end of the month to have the brackets fabbed up to fit the eaton..

any questions please fire away with regards the eaton conversion...
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: nick_thomas on 16 September 2009, 19:13
Sorry guys, to back-track a shade...

Are the VR/16v exhausts the same diameter?

If so, would I notice any gain running a 16v/VR exhaust on my 8v (once adapted)?
Title: Re: Mk3 Engine Conversion FAQ (All questons and answers here)
Post by: diver705 on 17 September 2009, 15:30
Hi people. Bit confused ive got a mk3 gti 8v and want to know will 1.8 20v head fit my bottom end code agg. :evil:
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: satys on 03 September 2010, 16:11
Need some info guys, i have a 1.8 CL and a friend of mine is doing a VR conversion on his 8v GTI. I have been offered the lump for free but was wondering after reading this thread what exactly would i need to do the conversion????


My dub has just had a full respray so would like to keep it rather then sell it.
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: AdamBeevers on 01 October 2010, 20:58
yo im doing a 16v engine conversion from a mk3 16v with abs, and putting into a 1.4 without any abs, and wandering how hard a job it is moving it all over, or can it just be disconnected and would that be easier? james.
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Khare on 22 November 2010, 22:23
Can I point out that for converting a mk3 to use a hydro clutch all that is needed is the clutch cylinder and the white clip that fits on the back of the pedal? As well as ofcourse the pipe that runs to the brake fluid reservoir.

No need to change pedal box over.
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Dan_GTi8v on 01 December 2010, 12:46
Indeed all mk3 pedal boxes are the same, just need the master and slave cylinders + lines and clips as said above :)
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Dan_GTi8v on 01 December 2010, 12:55
Also worth mentioning is the 02j box from a 1.8t mk4 will bolt straight into a mk3

and here is a link to a wiring guide, its based on a mk2 but its the same fuse box on a mk3 so its pretty much the same. Theres a pin which might be slightly different but I forget which one, its mentioned on page 3 of the thread

http://www.clubgti.com/forum/showthread.php?t=205887
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: N900 MJT on 08 September 2011, 09:17
Digging this one back up but i just saw the above quote

Can I point out that for converting a mk3 to use a hydro clutch all that is needed is the clutch cylinder and the white clip that fits on the back of the pedal? As well as ofcourse the pipe that runs to the brake fluid reservoir.

No need to change pedal box over.
]
If i had the MK4 with all parts could i take the clutch parts from that and add it to the mk3?

Cheers
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Wayne on 29 November 2011, 23:29
This question is getting asked lots these days so worth bumping this I think. :smiley:
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: rmas on 10 January 2012, 12:45
Hi guys, i just did my swap from a ABU to a AGG this weekend, but now i have a problem with the drive shafts. The ones from the ABU engine have the flange in the gearbox measuring 90mm and the AGG gearbox is 100mm. How can i solve this, does anyone know?
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: rmas on 16 January 2012, 11:27
Problem sorted... Just got the transmissions from a diesel one :)
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: popleyruss on 28 January 2012, 14:54
Hi guys, i just did my swap from a ABU to a AGG this weekend, but now i have a problem with the drive shafts. The ones from the ABU engine have the flange in the gearbox measuring 90mm and the AGG gearbox is 100mm. How can i solve this, does anyone know?

Just in bolt the flanges and swap them over
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: rmas on 01 February 2012, 11:30
Hi guys, i just did my swap from a ABU to a AGG this weekend, but now i have a problem with the drive shafts. The ones from the ABU engine have the flange in the gearbox measuring 90mm and the AGG gearbox is 100mm. How can i solve this, does anyone know?

Just in bolt the flanges and swap them over

Not that easy :( My old gearbox was a 085 and the the GTI one is a 020 so the flanges are totally diferent and cannot be swapped. If that is what you were refering off course...
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Dan_GTi8v on 02 February 2012, 07:35
isnt an 085 a polo gearbox?
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: popleyruss on 02 February 2012, 08:12
isnt an 085 a polo gearbox?
Be never used an o85 no and if it's the polo gti one there made of chocolate
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: rmas on 02 February 2012, 09:07
It comes in a lot of cars, Golf, Vento, Polo G40 also i think.
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: Diluxe on 15 November 2012, 14:02
when doing a 16v to r32 conversion, is it the clocks that needs changing or the signal sender that plugs into the g-box for the revcounter to work correctly?

cheers
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: F17BAD on 19 November 2012, 18:46
you will need to swap the clocks to VR6 items pal
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: mk3brick on 09 December 2012, 20:53
hey guys, hope someone can give me some help/advice on a conversion, i couldnt find the answers i wanted. i have a 1.4 and its got a very annoying whine from the box. i have decided to just swap the engine as i want something a bit more pokey, i have my eyes on a vr6 engine/box/loom/ecu/inlet mani/drive shafts/clutch cable and pedal but after reading the majority of this thread my mind has just been blown to pieces. can anyone point me in the right direction of anything else im gonna need or want to do before i jump in the deep end. thanks, any help would be a great help to me.

cheers :smiley:
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: owenfranssen on 01 July 2013, 23:07
Sorry to bump an old thread, but I'd love some more info on the 8v supercharger idea - has anyone had any luck making this work?
Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: hardmonkeys on 22 February 2015, 16:35
Hi,

Looking to convert my 2.0 8v auto Cabrio, to manual, I've bought a Donor car, a 1997 2.0 16v gti manual..assuming Easy enough to do now, just swap all items needed over?

Title: Re: INFO Mk3 Engine Conversion FAQ (All questions and answers here)
Post by: slw66 on 18 May 2015, 16:21
Hello everyone  :smiley:  Just replaced a dead 2L AAC engine in my 91 T4 with MK3 2L 8V 2E from 95 GTI, all is well except flat/stuttery acceleration...any ideas where we should look to smooth out? All the bits fitted great but it feels like a fuel supply issue, it occasionally spurts on as it should then stutters/flats again. Lovely idle and alwasy starts. Not sure if the ecu needs to be the MK3 or any other bits need adjusting??  :embarrassed: actually not sure if there is an ecu or a digifant thingy...  :cry: