Punto GT Mk1 Gear ratios?

Anyone know what the GT Mk1 gear ratios are?

Liam

Yeah, there **** :)

I have them.let me dig out my old brochures later this morning.....

I only need to know what 1st and 2nd are as I have straight cut close ratios for positions 3rd 4th and 5th.

Cheers

Liam

1st - 3.909:1 (same on all of the 1997 Mk1 puntos inc the 16v 1.2 but cant speak for the 1.6)
2nd - 2.238:1 (same as the TD60 and TD70)

Thanks for that. Was hoping 1st was 3.545:1

Cheers

Liam

3.5:1 is from a Fiat coupe 16vt gearbox

Any C510 type gearbox has interchangeable parts...

Punto turbo
1st 3.909:1
2nd 2.238:1
3rd 1.520:1
4th 1.156:1
5th 0.872:1
reverse 3,909:1
final drive 3.353:1

Uno turbo
1st 3,909:1
2nd 2,267:1
3rd 1,469:1
4th 1,043:1
5th 0,875:1
reverse 3,909:1
final drive 3,353:1

list of vehicles equipped with this gearbox can be found on the quaife website
http://quaife.co.uk/shop/search/results/QDH2K

QDH2K has been designed on the C510 gearbox so all these vehicles have it...

Common solutions over here is using the 4th from Uno turbo or 5th gear from a Tempra as it has longer ratio...or crown wheel from Bravo 20V..
Actually many years ago Novitec was selling a "longer 5th gear" for lots of money that was nothing more than a tempra 5th gear..
2nd/3rd from various Alfa/Fiat models depending the use etc..(search for Fiat fiorino 1.7TD gear ratios...they are the strongest of the family in order to support the diesel torque...many used 1st/2nd from this gearbox as it is ideal for drag use)

Straight cut gears?!

Mate, what you building?! :shock:

Had to reread my post..
Didn't say anything about straight cut gears,,,hehe

haha...now I got it...you talk about Slim's post...sorry..

Haha! Sorry, i forgot to use the quote button!

You still haven't showed us your build tho, Yelfig... come on now! ;)

Yelfig - Thanks for the reply. I'm already fairly up on the ratios/interchangeability of the various Fiat/Lancia C510 boxes and was planning on using Coupe 2.0 16v/Tipo 2.0 1st and 2nd. I had found conflicting information on the Punto GT box, some said it was 3.909:1 and some 3.535:1. Clarification is good tho so thanks.

Kas - I have a Mk1 Uno Turbo road going hill climb/sprint car that I have raced twice. Since my last hill climb (July) I have decided I need a close ratio gearbox. I bought a Punto GT box with 60,000 on as my base to start from. As I mentioned, first and second will come from a Coupe/Tipo. I have also recently bought straight cut 3rd-1.620:1 4th-1.240:1 and 5th-1:1 from an Alfa 156 BTCC of the mid/late 90's. I may also use the Alfa 147 final drive 4.06:1 but I'm not sure about this yet. I'm also fitting my Quaife ATB diff for good measure. :)

Cheers

Liam

Sounds awesome dude! And the close ratios sound like they'll be put to good use - interesting stuff!

Have you got any vids of the hill climb? Quite a lot of Uno fans on here so lets see some pics too! :)

Hey Kas

Sorry no vids yet, I will be recording it next season. I have photos but am unsure as to where I should post them, what part of the forum would be best?

Liam