GolfGTIforum.co.uk
General => The garage => Topic started by: lee on 21 April 2003, 21:03
-
Hello
Has anyone got any tips on drilling my air box mk2 16v. Also any ideas on tyre pressures for 195-50-15s :-/
-
Lee,
Where are you? I have a Mk2 drilled air box you can have if you want. I'm in Yateley, Hants.
By the way did you look at the thread you started concerning fuel octane in a 16V? I was wrong about puting unleaded (95 octane) without any adjustment.
Stick with Optimax (99 octane) or super unleaded (97 octane). If you want to use 95 octane, you will need to retard the ignition timing.
-
Hi Rich
I am clear on the fuel issue now, thanks. I am using and will continue to use Optimax. I looked at the page you set up, cheers.
Cheers for the offer, but I'm probably a bit far (Wimbledon) and I'm kinda deciding whether or not I actually want a drilled air box. I was wondering whether or not someone would advise me against it, or any tips etc. Will keep you posted! :)
Also Rich,
I can't work out how to get the power steering belt off, so that I can change the fan belt. Do you know? Lee
-
hey lee, i have basically cut the whole front off my original air box ! i did drill holes in it but one huge hole at the front has better effect. it gets more air in, mostly the fresh cold air from the front, not heat from the engine. i still use the standard panel filter
-
when will you kids learn?
Its a waste of time drilling the filter box as the standard air intake is the same size as the outlet to the engine.
So you cant get any more air in unless you increase the size of the thottle butterflys, (Throttle bodies).
All drilling the airbox does is give a nicer sound.
You will only get an inprovement by rerouting the standard air intake hose by the way of an extension hose to a more frontal position (i.e behind the small grill under the bumper line).
This gets nice cool, dense air, directly to the engine without wrecking the filter box and not giving out any more noise than the standard set up.
The only reason the standard air in take is where it is, is because it picks up less dust, sand etc... behind the headlight or from the inner-wing (this depends on year).
If you modify it like above there is a small chance of sucking up more sh!te (Leaves, dust, small Mammals........etc) so shortening the life of your filters.
What are you? ex-Nova drivers?
Jesus!
;) ;D
-
when will you kids learn?
Its a waste of time drilling the filter box as the standard air intake is the same size as the outlet ?to the engine.
So you cant get any more air in unless you increase the size of the thottle butterflys, (Throttle bodies).
All drilling the airbox does is give a nicer sound.
You will only get an inprovement by rerouting the standard air intake hose by the way of an extension hose to a more frontal position (i.e behind the small grill under the bumper line).
?This gets nice cool, dense air, directly to the engine without wrecking the filter box and not giving out any more noise than the standard set up.
The only reason the standard air in take is where it is, is because it picks up less dust, sand etc... behind the headlight or from the inner-wing (this depends on year).
If you modify it like above there is a small chance of sucking up more sh!te (Leaves, dust, small Mammals........etc) so shortening the life of your filters.
What are you? ex-Nova drivers?
Jesus!
;) ;D
I agree and its not something I would do for the very reasons you mention. Unfortunately the airbox on my donor Mk2 had already had it done.
Lee, rather than drill your perfectly good airbox, try mine and at least then you can go back to OE later. I work up at Heathrow so I'm not that far away.
-
Thanks for the info 'mo3000', I knew already that drilling the airbox has no performance benefit, it's just that I can't find an induction kit for my 16v. All I want is the sound, I'm not interested in increased performance.
Being that you know em inside out-maybe you could tell me if there is an induction kit for the 16v. Being new to Golfs myself, there is lots I have learnt from the helpful guys on this website, and there is still lots I need to learn. :)
Off now to wash my fleet of Nova's, and to hang out with my 17 year old buddies. ;) ;D :-X
-
to 'mo3000',
it sounds to me like you dont have a clue what you're doing advising people on how to get more power !
so you're saying the only way to get more air in is by bigger throttle body ? - what a load of **** !
i'm telling you right now that modifying an original air box will make more power and i have the dyno print-outs to prove it !
and what does this bulls**t statement mean - "standard air intake is the same size as the outlet to the engine"
you need to do some homework you silly little kid. ha ha :D
lee - this guy has no idea what he's talking about.
-
:)Cheers concept
It sounds like you know what you are talking about.
-
hey lee,
i used to run my car with a k&n induction kit but now the modified original air box is producing better power. (and a nice sound)
the panel filter is not normally dirty ( i check it regularly) but if it gets dirty then i'll just take it out and clean it. or even replace it - they're not too expensive.
its entirely up to yourself what route you go, but there's my opinion.
to that numb nut 'mo3000' who thinks he knows what he is talking about - hello, am i wrong? ???
-
any performance air filter makes NO DIFFERENCE TO POWER .I HAve a vr6 and raced my m8 in a vr6 with a sporty filter.there was no difference at all .my advice is drill the fcuker and enjoy the note: 8)
-
to 'mo3000',
it sounds to me like you dont have a clue what you're doing advising people on how to get more power !
so you're saying the only way to get more air in is by bigger throttle body ? - what a load of **** !
i'm telling you right now that modifying an original air box will make more power and i have the dyno print-outs to prove it !
and what does this bulls**t statement mean - "standard air intake is the same size as the outlet to the engine"
you need to do some homework you silly little kid. ha ha :D
lee - this guy has no idea what he's talking about.
Sounds like concept is obviously proud of his skills with a hacksaw, but sadly has no concept of how an engine actually works.
Do you know what a thottle body does? Obviuosly not.
The throttle body controls the amount of air that enters the engine. So no matter how much air you can get into your precious filter box, it has to pass through the throttle body in order to enter the engine. if you take of the air inlet pipe just before the throttle body you will see that the total area of the two throotle butterflys is already smaller than that of the air inlet pipe, so in order to get more air past the throttle butterflys you can do one of two things.
1) pressure charge it, (turbo, Supercharger etc) therefore forcing the air through the buterflys. This is the pricinple (although it is obviously not as powerful as a turbo or supercharger!) behind mounting the air inlet pipe to the filter box as close to the front of the car as possible so that the 'Ram-air' affect of the car moving foward pushes the air into the engine.
or
2. Make the throttle body, (and the butterflys) bigger. This means there is less resistance to the air flow so you can get more air into the engine.
Oh and by the way.
You will find that i do know what i am talking about as i Have a degree in Engine Design and did one of my project on pressure charging, (getting air into engines..... 'Numb nut').
I hope this clears up any confusion over 18 year olds waving daddy's hacksaw around yelling ' I'm gonna stick some 12mm Ignition leads on it........ you know i might gain 500bhp!'
T**t.
I rest my case.
;)
-
seems like lee and his drilled air box is causing a bit of a stir.
But ive got to say im with mo3000 on this one after speaking to various volks perfomance garages such as tsr and the like. it seems that a drilled air box might only have gains of 2-3 bhp at the very most which isnt much. the only way to get big power gains is wtih the likes of a turbo, suppercharger,throttle boddies or incressed engine size .
maybe concept ought to find out who hes talking to before he starts shouting his mouth off after all this is only a forum on a web site theres nothing to prove to anyone. its here for poeple to chat about there cars and offer advice and tips or ideas. chill out people......
Harr1s...............
-
Its seems to have divided a lot of people this one but here I will speak from personal experience and say that drilling the air box on my car ('91 16V) made it feel more responsive and is more fun to drive. And now speaking from my background I will say that drilling the air box as such will not improve the performance fiqures of an engine because you would still be restricted by the paper filter. drilling the airbox and then also fitting a performance air filter will increase air flow and will also stop the depression that happens inside the filter box when the throttle is opened. combine this with a polish and ported head and sports exhaust and the basic laws of physics dictate that the more air flow/fuel vapour into and out of an engine the more power it will produce.
Also the "ram air" effect that routing a hose to the front grill is minimal and all normally aspirated engines work under atmospheric pressure so you wouldn't gain any increase in power from this. The amount of air entering a cylinder is determined by the stroke of the piston so the only way to increase power in this scenerio would be to employ forced induction.
-
hello all,
this has been an amusing debate! i should point out that this all started on advice on air filters! i offered my advice - and thanks to those who backed me up.
it is possible to modify an original air box to make more power than a k&n induction kit, that was my point !
mo3000 came in with his strange statements along with saying i was an ex nova driver, and then talking about pressure charging and his degree (yawn yawn).
i suggest he has more respect for others and not just think cos he has a degree that he's right and others are wrong.
i know a lot about two-stroke and four-stroke engine rebuilding and tuning, and disagreed with his comments.
also i'd like to add that i'm not 18, i have two tool boxes full of a huge variety of quality tools, and my car has standard leads.
:)
-
Standard leads eh?......... what about splitfire plugs then?
Only messing!!
Anyway, i'm sorry you took offense to the Nova joke, I must have touched a nerve there and offer my appologies.
I see your after ways of making you Mk3 quicker?
What state of tune is your head at?
It seems that you have done the relavent cam work and altered the mixture to suit, It only seems the right thing to start messing around with head?
;)
-
hello mo3000, i see you know what you're talking about so i take back my comment!
have you done any tweeking on mk3 8v gti?
obviously not the quickest gti they have ever made so its limited. i have looked into going for turbo using cross flow head off the mk4 with a t/d exhaust manifold but after reading about problems people have had setting them up - i won't bother.
on my car, the exhaust is good - stock manifold, cat replacement, straight through powerflow. head - kent cam and pulley set on dyno, no porting done. intake - well you know what i've done !!!
i've also made a custom mod for the intake manifold. have run it and feels good but dyno will give me figures. on the air flow meter i've removed the wire mesh at the front beore the sensor and that was a good gain! i want to fit a better intake pipe from meter to throttle body as stock looks restrictive.
what are your comments? no turbo - no nitro - just improving what's there
-
Well, I know I wanted some opinions but I didn't think I was gonna start a war!
'mo3000' - I can see why Concept took offence to the nova & kid comment you made in your earlier post, to be honest I found it offensive and not the sort of response I had ever received off this website in the past. It surprised me and to be frank p***ed me off. Like he said, even people without degrees do have brains and know their stuff, and I will also clarify that I was once 18, erm..10 years ago! I'm not exactly a spring chicken, just new to Golfs. Thats why this website is a useful resource to me. Anyway, thanks for your advice and comments.
'concept' - Thanks for your advice, I am gonna drill the fcuker, I want the sound, and whether I gain or lose or nothing happens to the power, it should sound meaty. :)
If I get a bit more power then thats cool. If not, well, it's not gonna leave me out of pocket. Cheers mate.
To everyone else - cheers boys, certainly made interesting reading! :)
Cheers
Lee
:)
-
HEHEHE!!!
That was a funny post!!!
-
Lee,
I may be coming along to GTI International afterall, I'll know for sure this evening.
Shall I bring the drilled airbox with me?
How did you get on with your cambelt?
-
Hi Rich
I am going to GTI International on Sunday, is that when you are going up there?
Still haven't done the cambelt, although the page you did for me was helpful-except for the diagrams wern't visible. I could have done with seeing the diagrams although my mate is going give me a hand with it next week, using drill bits like you suggested.
Thanks for the info on that one mate.
Lee
-
Hi Lee,
It looks like I'm going to be travelling up with 'project87' for Saturday and Sunday, camping overnight. If we have room in Ben's car, I'll bring it.......we might be tight for space, especially if we want to bring goodies back.
Just had a look at my post for the cambelt and I see what you mean about the pictures not coming out......I thought I had fixed that. I'll have another go at it tomorrow.
We will all have to arrange to meet up.
-
agreed,I think its going to be a see how much u can fit in a golf competition but im sure we can squeeze an air box in...:P
-
Speaking of hot air!!, i need to get rid of hot air from my
custom s/s 4-2-1 exhaust as its melting my steering boot and maybe sucking into my intake.
any help much appreciated,
any one know where to get wings & bonnet vented!??
cheers
ash mk1 16v cab ;o)
-
Hi Ash,
tricky one that as I think you'll find that even the standard exhaust melts the steering boot over a period of time.
Only thing I can think of is to fabricate a heat shield?
-
I'm going to bring my drilled airbox to the show. Ben is hoping to get his Mk2 into the sprint, if we can get 2 goes at it, we'll change the airbox over........see if we notice a differnce in times. :P
-
Ok cheers that would be really good, as long as you & Ben can fit it in his car!
Rich
I have emailed you my mobile number, email me yours and I will give you a bell on Sunday when I get there.
Cheers
Lee :)
-
Done that Lee.
I'm pretty sure we'll fit it in, its coming back we might have a problem (depending on how many goodies we get, I'm after a dashboard) so you're welcome to the airbox afterwards.
See you there. ?;D
-
Hi Rich
I am going to GTI International on Sunday, is that when you are going up there?
Still haven't done the cambelt, although the page you did for me was helpful-except for the diagrams wern't visible. I could have done with seeing the diagrams although my mate is going give me a hand with it next week, using drill bits like you suggested.
Thanks for the info on that one mate.
Lee
I have now fixed the link so that the diagrams should work. If they still don't work try hitting 'Ctrl' and 'F5' at the same time.
Not sure why it didn't work in the first place........but thats computers I guess.
Hope I'm not too late.
http://homepage.ntlworld.com/richandhazel1/Cambelt/ESIS.htm
-
HEHEHE!!!
That was a funny post!!!
Cheers.
;)