Gear Ratios between FR and Cupra models?

[ee01akk]

Can someone tell me if there are longer ratio gears on the 1.8 20VT Cupra model compared to the 1.8 20VT FR model? I'm not interested in the diesel versions, just the petrol engines.

Also what is the average rpm at say 70mph for each model, the rev limiters on each and how does this impact on the maximum speed of each car?

Also if someone can tell me what extra modifications the Cupra model has in comparison to the standard FR that would be great!

Thanks and merry xmas to you all!!

 

[Nath.]

I can't comment on the 20VT CUPRA but I can tell you that 70mph is 2800rmp on my 20VT FR

I reckon the 2 will be the same but Wait till a CUPRA owner confirms.

For the other differences I would sugest doing a search as I know it has been posted loads of times before.

 

[Fl@pper]

i could tell ya the first one but would need gearbox code to check though - sorry

*edit* dug a bit harder and you didnt say what years so i looked as deep as i could and this version is getting outdated mind (2005)



FR - BJX engine (150bhp) 12/03-

Cupra - BBU engine (180bhp) 05/04-

both list as transmission GVZ (5sp) ? - so same box and ratios it seems

1 - 33/10 = 3.3
2 - n/a
3 - 34/25 = 1.36
4 - 30/29 = 1.03
5 - 31/38 = 0.81

diff 62/17 = 3.64

 

[kriso]

They have different ratios and different final drive ratios too. 70mph is 3000rpm on the Cupra

 

[Fl@pper]

They have different ratios and different final drive ratios too. 70mph is 3000rpm on the Cupra

do they have different size wheels ?

 

[st10587]

pre facelift FR runs 16 face lift FR runs 17 like the cupra

 

[Fl@pper]

might affect an inconsistent yardstick like the rev counter a little see

mind you the ratios and codes i have listed are all from 2005 info so facelift could be different again

anyone with later models/years confirm the GVZ transmission code

 

[kriso]

Aren't the profile sizes on the tyres different too? So there might not be that much difference between FR and Cupra wheel/tyres.

GVZ is the right gearbox code but I think the ratios can still be different. The TDI Cupra and FRs def have different ratios. I have a list back home, but I'm overseas at the moment (driving a 1.4 mk4!). The petrol FR and Cupras develop peak torque at different rev ranges so makes sense that the ratios would be different.

Edit: Looks like they are the same on the petrol FR and Cupras, but different on diesel FR and Cupras.

 

[Fl@pper]

Aren't the profile sizes on the tyres different too? So there might not be that much difference between FR and Cupra wheel/tyres.

GVZ is the right gearbox code but I think the ratios can still be different. The TDI Cupra and FRs def have different ratios. I have a list back home, but I'm overseas at the moment (driving a 1.4 mk4!). The petrol FR and Cupras develop peak torque at different rev ranges so makes sense that the ratios would be different.

tyre profile will make a little difference but minimal in reality unless extermely different scales but then you can throw weather/wind speed/tyre pressure/temperature - no end of variables on top of an inaccurate speedo/rev counter lol

if two cars are both GVZ trans then the gears and diff are the same but years wise might be the differing factor as i only have info upto '06 models to compare and they both list 150/180 as both being GVZ as above

TDI / 1.4 are for sure a different codes EWT/GGU EWR/GGV and all differing gears/diff for due to the working limits of the engines being tailored for of course

TDI boxes in petrols are great long geared 1/2/3 but useless 4/5 but can make great motorway cruising

 

[ee01akk]

They have different ratios and different final drive ratios too. 70mph is 3000rpm on the Cupra

Seems a little high revs for such a quick car with a top speed around 130 mph. So how around 100mph you're doing about 5000 rpm? Seems like a 6th gear is definitely in order. I can't believe the Seat designers overlooked this on the 1.8 20VT Ibiza Cupra with a top speed around 140 mph.

If only I could afford the insurance of a 1.8 20VT Leon Cupra....*sigh*

 

[Nath.]

Seems a little high revs for such a quick car with a top speed around 130 mph. So how around 100mph you're doing about 5000 rpm? Seems like a 6th gear is definitely in order. I can't believe the Seat designers overlooked this on the 1.8 20VT Ibiza Cupra with a top speed around 140 mph.

My FR deffo reads 2800 revs revs at 70mph so 140mph would be 5600 revs (down hill with a tail wind).

If my maths is correct my FR does 25mph per 1000rpm in 5th gear so 100mph would be 4000 revs and IIRC the red line is 6500 revs

EDIT,

just had a blat round to the shops to get some milk an the rev limiter seems to be 6800 revs, I have never taken it round that far before

 

[ee01akk]

My FR deffo reads 2800 revs revs at 70mph so 140mph would be 5600 revs (down hill with a tail wind).

If my maths is correct my FR does 25mph per 1000rpm in 5th gear so 100mph would be 4000 revs and IIRC the red line is 6500 revs

EDIT,

just had a blat round to the shops to get some milk an the rev limiter seems to be 6800 revs, I have never taken it round that far before

There's a video on youtube of this guy with a 2005 Seat Ibiza Mk4 1.8 20VT FR remapped from 150 to 185 bhp and he got a top speed of about 240 Km/hr at 6500 rpm and it wouldn't go above that.

Does anyone know if rev limiters are raised when doing a remap or do you have to ask for this first?

I think the 25mph per 1000 rpm in 5th gear is about right, but it drops to a bit when you approach 6000+rpm due to wind resistance, rolling road resistance, drag etc.

 

[kriso]

Does anyone know if rev limiters are raised when doing a remap or do you have to ask for this first?

I think the 25mph per 1000 rpm in 5th gear is about right, but it drops to a bit when you approach 6000+rpm due to wind resistance, rolling road resistance, drag etc.

The rev limiters aren't raised normally. The 25mph per 1000rpm wouldn't drop when you approach 6000+rpm because the wind resistance etc. would stop the engine revving as well as the speed of the car. The wheels are still connected to the engine, the only time this would change is if you were slipping the clutch or the wheels.

 

[Nath.]

^^^^^^

Reminds me of the guy that posted up saying that his tuning box lowered the revs @ 70mph