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Model specific boards => Golf mk3 => Topic started by: Chris Hues on 23 August 2011, 17:35

Title: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 23 August 2011, 17:35
Hi there,

Driving along today home from work, I had a thought about putting a 6 speed manual gearbox on my Golf.

Has anyone tried this before or anyone got any advice on this?

Also, some idea of whether the cost of this will so extreme its pointless would be nice if possible please!

Cheers,
Chris
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Wayne on 23 August 2011, 17:39
The cost of doing it makes it pointless.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Ess_Three on 23 August 2011, 19:19
Hi there,

Driving along today home from work, I had a thought about putting a 6 speed manual gearbox on my Golf.

Has anyone tried this before or anyone got any advice on this?

Also, some idea of whether the cost of this will so extreme its pointless would be nice if possible please!

Cheers,
Chris

You can fit one of several VW 6 speed gearboxes if you want ultra high ratios and overdrive gears...and can live with the limited steering lock that certain gearboxes can give.

But if you want a 6 speed performance 'box, that is a close ratio, stronger, uprated 'box...then you will need a bespoke gearkit fitting in your standard casing...and that's going to cost you between £2500 and £6000 depending on extras and diff/FD choice.
I reckon there is probably around £6k sitting in my Gemini (VW Motorsport) 6 speed 02A gearbox/flaywheel assembly.

As Wayne says...worth it? Probably not...unless you really want specific gear ratios, final drive and diff combinations.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: MK3GTI_16Valve on 23 August 2011, 19:43
And that as they say is that :)
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 23 August 2011, 20:38
wow, yes, thats me told.

I think not then! Thanks for the help guys!
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Ess_Three on 23 August 2011, 21:55
wow, yes, thats me told.

I think not then! Thanks for the help guys!

don't get me wrong...it can be done...but the off-the-shelf VW solutions cause other problems (size, weight etc) whilst not always solving the problem you may want a 6 speed 'box to solve.

I don't want an overdrive 'box.
I wanted a very close ratio 6 speed box with a standard 1st and 2nd-6th taking me to where the standard 4th would be.
..and you need to go Gemini/Quaife to get that....and at considerable cost.


If it's a longer ration 6 speed you want, then an 02S from a Touran or similar would do the job, and can be made to fit.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 27 August 2011, 12:03
Yeah, i was looking at the longer ratio 'boxes tbh.
I just think a 6th gear would be very helpful with me travelling everywhere on major roads at 60+mph for nearly all of my commuting.
Either that or a longer ratio 5speed.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: tshirt2k on 27 August 2011, 12:24
The mk3 16v box is quite long for that engine as standard. Is it better cruising you want? You could change 5th only for this.

Otherwise a longer tdi box would make for a very lazy drive.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 27 August 2011, 17:49
Yeah, better cruising is what i'm after! Better fuel economy would be nice if possible with these fuel prices but I'm not that fussed as it is a GTi 16v, so it's expected to be a bit low!

Is it difficult to change 5th gear at all?
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: tshirt2k on 27 August 2011, 19:34
Yeah, better cruising is what i'm after! Better fuel economy would be nice if possible with these fuel prices but I'm not that fussed as it is a GTi 16v, so it's expected to be a bit low!

Is it difficult to change 5th gear at all?

Not at all, cab be done in a couple of hrs. Just need a puller, gears and oil. I went for a g60 5th gear. Drops cruising rpm by ~300rpm. Tdi 5ths will drop it further.

http://www.benricci.com/files/gearswap.pdf (http://www.benricci.com/files/gearswap.pdf)


Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 28 August 2011, 11:48
Thanks dude, much appreciated!

I shall look into getting that sorted then...do you think the ~300rpm makes a huge difference to the cruising then?
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: tshirt2k on 28 August 2011, 12:04
Less rpm means less fuel used. But it can also mean you are reducing your axle torque further. You don't want to go so long as to eliminate overtaking ability.
I haven't tried mine yet but will be an improvement over the "third gear like" acceleration 5th I had. But I have over 250 ftlbs of torque at my disposal for it not to affect overtaking too much. I may need to go longer yet.
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: Chris Hues on 28 August 2011, 12:50
Ahh right, gotcha!
Well with this being a lot cheaper and easier...I think I'll be going with that as opposed to the 6speed then!
Title: Re: 6S peed Manual Gearbox on Mk3 GTi 16v
Post by: tshirt2k on 28 August 2011, 15:54
It's easier and cheaper, IF you can find a set of gears SH. Otherwise the gears are around £200 from dealer.