fiestaturbo.com

[red0r]

i have right now a 1.6l 16v zetec and i will put in a 1.8 or 2.0l zetec, not 100% sure yet cause i dunno what engine i can get for a good price here. i know what to do but i am not sure if i should put in another gearbox or use the old one from the 1.6. i dont need high topspeed but i want a good acceleration

[voorhas]

The shorter gearing on the 1.6 box will give you lower top end, lower mileage and higher noise levels @motorway speeds... it will also mean you'll get wicked acceleration so if thats what u r after stick to it. I know I would

Besides, if you get tired of it and your car isn't totally slammed, you can always play around with tyre diameters to get a bit more mph per rpm until you figure out which box u want.

Gonçalo D.

[Nick 2i]

depends what your current box is like, if its a bit notchey and you can afford a new box then go for a differnt one.

As said by voorhas you will get better acceleration but less top end with your current box.

but if you do change your box put a new clutch in there while the box is out

Nick

[unknown_user]

im still running my old box however its not an si box me thinks... altough my old engine was a 1.6 zetec i think the box was changed
as it only did 30mph in 1st on the limiter
where as a si box will do 40mph in 1st.... u see! can any1 tell me how many 1600 boxs are about ?

[red0r]

so what other gearboxes could i use??? i checked for other gearboxes of the fiesta and seems like the zetec engined mk3's have all the same gear ratios or am i wrong??? those are the only ones i can get and from the smaller engined cars i think. but i wont get one from a rst or something here. so are there any other options???

[Stoned]

RS1800 box might be best?

It has similar or same ratio's as the RS Turbo box but has stonger bearings to take the power. Best you can get I reckon in your position

Unless you get like 200bhp out of that engine, in which case a diesel box

[red0r]

isnt the rs1800 the same as the xr2i 16v???

or whats the difference??? anyway, i probably wont get a rs1800 or rst gearbox. just from the fiesta s, the xr2i and xr2i 16v which are all the same as far as i know :/

[Stoned]

The ratio's may be the same but I am told the RS1800 box has uprated bearings for strength.

Cheers