Clio diesel gear ratio's?

[PhillipM]

Does anyone know what they are, or even the megane 175 dci ones?
Going to need some longer gears in the racer and I'm wondering if a diesel box will do the trick rather than fork out for custom parts.

 

[PhillipM]

nm, found some, looks like they're still nowhere near long enough, be setting off in 3rd gear.
Re-think needed!

 

[Martin_172]

i can find out what speed im doing in each gear at a set RPM with my 6 speed diesel version of the clio 200 box if you want (cant remember the box code!)

 

[PhillipM]

Might help, the few I've found ratio's for are still nowhere near high enough though

 

[Martin_172]

what sort of speeds are you needing to do? im doing 100mph at 3000rpm in 6th from memory!

 

[PhillipM]

I need about half that again - 150mph@3000rpm would do it in top gear. Don't think it's going to happen when you say it like that though...

Have to see what I can get diff-wise, if I can get it to the ratio I want then 100@3krpm might just do with a longer ratio on the final drive.

 

[marinemackay2003]

Vag box conversion ?

 

[PhillipM]

Maybe, certainly doesn't look like I can use the standard box/flywheel/clutch setup from either a 197 or Megane 250 like I was hoping
Not unless I can get a 2.4:1 diff made anyway...

 

[Tutuur]

02M DQB(s3) with diesel final drive(s):

Tyre Diameter = 1765.94 mm
1st Gear = 67.04 km/h
2nd Gear = 108.82 km/h
3rd Gear = 160.29 km/h
4th Gear = 210.53 km/h
5th Gear = 258.55 km/h
6th Gear = 311 km/h

 

[Tutuur]

looks a bit f*cked. it's with 195/40/16 tyres and max of 7000rpm

 

[Ex-User (19928)]

Is this for a bus engine or something?

A DCI gearbox in a petrol car will give massively tall gearing.

 

[PhillipM]

Hopefully going on a worked-over Megane 250 engine or perhaps a saab 2.3t, but I do need massively tall gearing out of the 'box itself, hence looking at diesel gearbox on the petrol motor, something that gave the equivalent of 250mph@6.5krpm in top gear wouldn't be terrible...

 

[Ex-User (19928)]

Right well assuming a dci box would fit, you'd be looking at 200mph+ VMAX... How could you possibly want any taller gearing? Especially on a sub-300hp engine.

 

[Goodj]

you're going to get a SAAB 9-3 to pull 250mph?

 

[PhillipM]

It's going in a spaceframed car with a 197 shell over the top.

It's going to have to drop down through another pair of diffs (~2.5 or 3:1 roughly) to give it 4wd, hence the need for taller gearing in the 'box itself - I'm trying to avoid packaging a pair of transfer boxes otherwise.

 

[Goodj]

ahhhhh!

Right!

what's this for, autocross? Trophee Andros?

 

[PhillipM]

Cheap Safari car, so huge wheels bump the gearing back up a bit after the diffs, aiming for about 120mph top end. But get there as fast as possible

 

[PhillipM]

Hmm, did want to try to stick to Renault stuff with it being a Clio shell, but it looks like the current RX-8 engine mated to a Mazda 6 diesel gearbox would be perfect...