fiestaturbo.com

[essexrsturbo]

just heard they did but wasnt sure

cheers

[MattPym]

Nope, Pretty certain they dont..... Atleast mine doesnt

[Oranoco]

Nope.

Only FWD Fords to have LSD's were the S1 & 2 Escort RS Turbos and the Focus RS

[wildheart]

Its worth fitting an rst box though,I fiited an RS1600i box with rst lsd in mine and its made a big difference!

[RS1800666]

Hi just wondering how this is done (S1 2 gearbox in a RS1800) and wha are the differences

[Ollybee]

It's bolts straight up.

[Big Walker]

And still retaining the standard fiesta driveshafts ?

[Ollybee]

Yep.

[Oranoco]

The S1 box has slightly lower ratio 5th gear and the LSD is a bit more aggresive in use than the S2 item

[Big Walker]

So an S2 gearbag on a 2.0 Fiesta would shift well

Guestimated to end ?? 130 ish ?

[Oranoco]

Depends on your wheel and tyre size as well as this also affects the gearing and your top speed.

I would think you wouldn't be far off a real 130mph with a 2litre Zetec under the bonnet.

[Laner]

I've heard rumors about using diesel box?

Surely this is just going to be stronger and your not likely to gain any extra speed or accelration due to the nature of a diesel car?

[edders]

the diesel boxes arent necessarily any stronger as they didnt exactly have to cope with massive amounts of power and torque. but you will get higher top speed but loose acceleration because the nature of a diesel engine is different. higher torque but fewer revs

also slightly off topic but is £500 a good price for a brand new lsd unit?

[Oranoco]

I've heard rumors about using diesel box?

Surely this is just going to be stronger and your not likely to gain any extra speed or accelration due to the nature of a diesel car?

The diesel box being stronger myth has been around years. It's complete cobblers and is no tougher than any other BC/IB5 box. The ratios are wholly unsuitable for most applications as although the gearing is taller you also need the torque to pull the car through the gears and often end up with a slower car overall as the gearing doesn't match the torque curve.

[Ollybee]

I've heard rumors about using diesel box?

Surely this is just going to be stronger and your not likely to gain any extra speed or accelration due to the nature of a diesel car?

The diesel box being stronger myth has been around years. It's complete cobblers and is no tougher than any other BC/IB5 box. The ratios are wholly unsuitable for most applications as although the gearing is taller you also need the torque to pull the car through the gears and often end up with a slower car overall as the gearing doesn't match the torque curve.

I disagree there, perhaps so in most applications but on the 2.0l it seems to work well. You do sacrifice a small amount of acceleration but if you are largely doing long journeys it's a good box.

[Oranoco]

The 2.0 certainly does'nt have the torque to pull through the diesel box. They make less torque than a stock FRST and I know my non stock FRST would be killed with a diesel box and that has substantially more than a stock FRST.

I 110% stand by my comments

[Ollybee]

I 111% stand by mine!

Works well on the one I did for a mate. There's a few members on here that are running that setup, VUK for example and no complaints there. It's a pointless discussion anyway as this thread was originally about LSD's.

[Oranoco]

Agreed. You will not get me to change my mind as I've timed a car before during and after a diesel box swap and it was slower across every discipline. Might even still have the test data somewhere as well if we didn't bin it during the house moves

[Ram]

i run an S1 box in mine. and i reckon a diesel box would be poo unless your going for top speeds