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#Post#: 520--------------------------------------------------
Final drive
By: Stooza Date: October 18, 2012, 9:56 am
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Ok, I have been offered the chance of a final drive from a 1.6
golf gti. Is this a good mod for a track day 16v? To be more
specific, will it keep it on the boil on tracks without mega
straights?
#Post#: 521--------------------------------------------------
Re: Final drive
By: Robin_16v Date: October 18, 2012, 10:25 am
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That's a 3.9 final right?
I switched the 3.6 for a 3.9 in my 2y box, did worked well on a
short track and second gear corners.
#Post#: 522--------------------------------------------------
Re: Final drive
By: chrismc Date: October 18, 2012, 10:33 am
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It depends on the type of track.
I personally preferred a 3.67 in my 16v around Castle Combe, but
for somewhere slower/road use then a 3.9 certainly keeps them on
the boil better
#Post#: 523--------------------------------------------------
Re: Final drive
By: Stooza Date: October 18, 2012, 12:00 pm
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Yeah, 3.9.. I will do more research, cheers!! :)
#Post#: 524--------------------------------------------------
Re: Final drive
By: JMR Date: October 18, 2012, 2:11 pm
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Id go 3.9 Stu.
Punch the ratios into a gear ratio chart...there's a few
floating around on the net.
Std Gti ratios are 3.45, 2.12, 1.44, 1.13 & 0.91 and 0.91 if its
a 16v box...0.89 if its 8v.
Pop in yr tyre size and max rpm and see what you get...look for
around 35 in 1st, 60 2nd, 80 3rd, 105 4th 115-120 5th.
#Post#: 528--------------------------------------------------
Re: Final drive
By: mitlom Date: October 18, 2012, 3:20 pm
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Stu,
IIRC another thing you need to be aware of is that the FD on an
8v and 16v box is not interchangable as the diff is a different
dia 109mm vs 111mm, the input shafts are also a different dia.
#Post#: 529--------------------------------------------------
Re: Final drive
By: Stooza Date: October 18, 2012, 3:24 pm
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its the 020 box from an 8v. It's been fully rebuilt with the
diff rivet arp upgrade. Good info guys, cheers
#Post#: 531--------------------------------------------------
Re: Final drive
By: chrismc Date: October 18, 2012, 3:49 pm
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Sounds good- ive heard the 8v boxes are tougher than the 16v's
(a friend with a very rapid track 16v runs an 8v box with 3.9fd
& quaife & swears by it)
I have killed 1 2y box purely from going to a 2L block from a KR
:'(
#Post#: 2266--------------------------------------------------
Re: Final drive
By: Matthewten Date: September 17, 2018, 11:36 pm
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aware of is that the FD on a
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