[24bph]

Hi all,

Im trying to work out what ratios to fit ti my puma, Im fitting a LSD soon and want to change the ratio of the fifth gear. Can anyone tell me the current ratios of the 1.7 box including the crown wheel and the 1.4 box ratios including the crown wheel ?

Ta in advance

Waz

[roadrally]

24bph, on 28 December 2009 - 08:22 PM, said:

Hi all,

Im trying to work out what ratios to fit ti my puma, Im fitting a LSD soon and want to change the ratio of the fifth gear. Can anyone tell me the current ratios of the 1.7 box including the crown wheel and the 1.4 box ratios including the crown wheel ?

Ta in advance

Waz

What do you want to achieve, top end or acceleration
1.4 5th 0.76-1 final 4.19-1
1.7 5th 0.88-1 final 3.82-1
Fiesta 1.6 Zetec se (2001) 5th 0.76-1 final 4.25-1
The fifth gears are part of the input shaft and are in matched sets (so Ford say!) I have looked at the Fiesta box 4.25-1 with a 0.88 final drive swap.

The 1.7 box I took apart had 1st to 5th as follows- 3.15, 1.92, 1.44, 1.07, 0.88
not sure of the 1.4 ratios 1 to 4

Fiesta ST 3.58, 2.04, 1.41, 1.11, 0.88, 3.82 fd

When you find youre ratios then use this calculator to get an idea
http://www.car-video...&B1=Recalculate

This post has been edited by roadrally: 28 December 2009 - 09:01 PM

[Fast Zoe]

Puma 1.4 gear ratios
1st 3.15 same as 1.7
2nd 1.93 same as 1.7
3rd 1.38
4th 1.03
5th 0.76

Rev 3.62 same as 1.7

Diff 4.19

I hope this is what you were looking for? I allso have a spare 1.4 box if you nead one open to offers.

[24bph]

Thanks for your help.

Sounds like a 1.4 box final drive might help with my quest to make 5th gear work better.

Im assuming the bits are interchangeable with 1.7 box ?

Cheers

Waz

[Fast Zoe]

I Think both the gearboxies are IB5's so most of the parts should be interchangeable but i don't know as i haven't tryed it.

[welshzsoc]

does this mean that a 1.7 with a 1.4 box would have slightly better acceleration? iplease excuse if this is a dumb question i dont understand ratios lol

[Shilly]

welshzsoc, on 12 March 2010 - 12:25 PM, said:

does this mean that a 1.7 with a 1.4 box would have slightly better acceleration? iplease excuse if this is a dumb question i dont understand ratios lol

kind of yes but you will loose it all in the top end

[welshzsoc]

ok thanks dude

[jamie01]

just wondering when i read that there, would it be possible to take the 5th gear out of a 1.7box and put it into a 1.4box?

[darrin]

Yes I believe so.

The FRP box is a 1.7 box with a final drive from a 1.6 box, then shotpeened 1st and 2nd (from what I've read).

Seeing as they are all IB5 boxs the contents should be interchangable. Even the ST gears should fit in the 1.2-1.7 boxes.

[roadrally]

jamie01, on 18 March 2010 - 06:08 PM, said:

just wondering when i read that there, would it be possible to take the 5th gear out of a 1.7box and put it into a 1.4box?

Ford say that the input shaft and 5th gear are machined as a pair so you cant just take the cog off the end and swap that, also, some of the parts are NLA for that gearbox.
I was looking at doing that for mine but going down a different route now. Ideally I want a quaife straight cut gearset with 5-1 final drive.
I wish I hadnt sold the 4.7-1 cwp set I had a few years back because that would get quite close to my target.

[t783vkj]

Anyone know which vehicle with a IB5 box has the shortest CWP, by which I mean the one that'd give you the best acceleration (in case what I really mean is the tallest)Something diesel Im guessing.

[FlashBastd]

Diesels are usually quite long, to keep the revs down. I think you probably want a 1.25 Fiesta setup.

[roadrally]

t783vkj, on 14 April 2010 - 08:47 PM, said:

Anyone know which vehicle with a IB5 box has the shortest CWP, by which I mean the one that'd give you the best acceleration (in case what I really mean is the tallest)Something diesel Im guessing.

Fiesta 1.6 Zetec SE 2001 4.25-1 cwp
If you have the money then Quaife do a 5-1 cwp straight cut final drive (may do other ratios also)

This post has been edited by roadrally: 15 April 2010 - 06:29 AM

[t783vkj]

Cheers,yeah if I could spare the dollar,I'd get one just for the noise.

[happy-kat]

These reads might be of interest

http://www.pumapeopl...os&fromsearch=1
http://www.pumapeopl...os&fromsearch=1
http://www.pumapeopl...os&fromsearch=1

[t783vkj]

Anyone know what the correct ford i.d. reference for fiesta 1600 zetec s gearbox is?Once removed from the vehicle I'd like to know what Im buying.