[Lady Loza]

Looking for some help here.

Possibly looking at the idea of converting a Puma into a stage rally car, but have been considering gear ratios. The car is a 1.7 at the moment, and totally standard, so the 1.7 box is an option. It may end up with a 1.6 engine however. Either way, it would be fairly standard initially, but possibly upgraded in the future into something quite revvy.

What box options are there? I've had a search but struggled to find definitive answers really. Does anyone have access to all the ratios for the various standard Fiesta/Puma boxes? I've heard the FRP has a lower final drive than the standard 1.7? Possibly the same as the Fiesta Zetec-S?

Does anyone have any experience of rallying these cars, that could advise on gear ratios? Unfortunately the budget wouldn't stretch to aftermarket gear kits initially at least, so need to work with the standard options to get the best box. Final drives and things can be swapped around I assume, so perhaps the 1.7 box could be used with a lower final drive. Or there may be other options?

All suggestions welcome!

[Turby]

FRP
Final drive 4.25
1st 3.15
2nd 1.93
3rd 1.41
4th 1.11
5th 0.88

1.7 Std
Final drive 3.82
1st 3.15
2nd 1.93
3rd 1.41
4th 1.11
5th 0.88

1.4 Fiesta 3 door
Final drive 4.25
1st 3.58
2nd 1.93
3rd 1.28
4th 0.95
5th 0.76

IMHO, I would try to find a FRP box with viscous LSD already fitted.

Ultimately you'll be looking for Quaife IB5 gearkit with much lower final drive and suitable LSD, the ratio of which will have to be worked out using your max engine revs / realistic top speed. Are you rallying on asphalt or loose ? as this makes a difference to what LSD you ideally want.

I'd also put a 1600 Zetec-SE in as well so you are in a sensible class rather than against Mk2 Escorts with 2 litre BDG's or Vauxhall red-tops...

[Lady Loza]

Thanks for those, gives something to start from.

FRP box would be nice, but wasn't there only 80 LSD boxes? So not ever so common. Car would be for asphalt predominantly. Obviously a proper gearset would be good eventually, but not at first. Plenty of time for that.

1600 engine would make sense for a few reasons. Being super-competitive isn't top priority, as it's just a bit of fun really, but changes to improve pace could be made as time went on.

[happy-kat]

http://www.pumapeopl...howtopic=101236

[Fledge]

I have got a FRP box in the race car. 200 bhp 8200 rev limit and it's geared way to high. On the back straight at Anglesey I only needed 4th gear. Stuart was telling me Chris birbeck sells a 5.00 final drive which should do the the trick

[Lady Loza]

Thanks for everyones help :-) I have been looking on the Chris Birbeck site, there's so much I want to buy. Just need to save the money

[MPMotorsport]

We got a std 1.7 gearset and it work ok at the moment. We did talk about a 1.6 whit final gear build whit 1.7 gears, but dont have the guts to take a gearset apart. Didt a small test whit 1.25 and that was also ok. (we spent a lot on a Gripper diff, lovely diff )

Karsten Larsen
MP-Motorsport
Denmark

This post has been edited by MPMotorsport: 15 December 2011 - 06:36 PM

[kraft90]

For my gear ratio i used gear calculator from cargister sites.

http://www.cargister...ator-gear-ratio

[MPMotorsport]

We have today spent a lot off good sponsorer money on a gearset from quaife. 5th gear 0,92 and a final 5,08. We hope too be a bit faster....



Do you have info on this gearset, then we love too have this info. bad, good, pic off the gearbox



Cheers
Karsten

[Turby]

We run a quaife gearkit in teh race car, we have the 4.69 final drive, and same 0.92 5th gear. Good for 125 mph at 8000 rpm on 195/50x15 tyres, which are very close to at Snetterron. For Spa we have to run larger tyres to increase max speed at max rpm...

Using a 5.08 would reduce this to 115 mph.

[MPMotorsport]

In Denmark we have a max on rallys at 170-180 km. A lot off 45 or 90 d-gredas turnes, so we dont need topspeed. Love to have you info how to run this gear set.

Is the 5,08 too low???

This post has been edited by MPMotorsport: 29 May 2012 - 09:01 PM

[Turby]

Sounds like the 5.08 is about right, but it assumes you have enough rpm to reach the maximum km/h you want. I used to rally a 1400cc which had a 5.3:1 final drive fitted, with 9000 rpm and slick asphalt tyres which gave me a maximum speed of approximately 115 mph.

Fitting the Quaife gear kit replaces all the gears / shafts in the gearbox, you still use the standard selectors / hubs and synchros. Don't loose any of the small locking ball bearings when you take it apart

[MPMotorsport]

We have a the moment a max 7250 rpm. Do you have some pic off the inside gearbox?We need some rally guys to help us whit this gear setup.

This post has been edited by MPMotorsport: 30 May 2012 - 07:53 PM

[Turby]

Basically the above parts replace the standard parts.

[MPMotorsport]

I have seen this before need after pic.. then the gearset is inside

[MPMotorsport]

we hope to get the kit in aug.... Still need some good pic from the inside