There is a sierra sapphire local to me its got a full cosworth kit on it and shell is in mint condition, only bad point is it has a 1.8 Cvh in it. I was thinking shouldn't a Fiesta/Escort RST engine fit as it is basically a CVH turbo, is this correct? just no one else seems to have done this conversion before

 

its been done lots of times but isnt a simple bolt in conversion some custom parts will need to be made like downpipes converting from distributor ignition to wasted spark and a few others

 

the old 1.6 siera's had the 1.6 cvh in them! so the RST should fit but you will need to make custom down pipe and take accross the rst engine loom!

 

Surely with the space a Sierra has, there's much better conversions for the money?

 

could have a front exiting exhaust

would a 2.0 zetec silver top/blacktop be better ?

 

Some the last of the Sierra's had a 16i cvh (93ish).All the early 1.3,6,8 2.0 were sohc upto 89.
Twinc and cvh available after

 

As well as the 2.3 V6 which was available from introduction until 1986. Also 1.8 CVH was available in 89.

OP, yes RST engine is CVH with a turbo, BUT the fuel delivery differs, that being MFI for ERST and EFI (Ford EEC managed) for FRST and also it will be mounted longitudinally so your gearbox/bell housing may not mount!

If it were me i think I would be inclined to fit a Pinto which was native to the Sierra and uses the same 'type 9' gearbox you will already have!

Martin

 

Yep,2.3d 2.8 early too and 2.9 and 18td later.What I should of wrote was cvh available 89 onwards but 1.6i was very late models.I can't remember if the one we had was a K or L reg 1.6i LX,not early ones as some one else as said.

 

basically, dont bother.

its easier and cheaper to put a more powerful engine in, dont waste time thinking about the RST lump

 

what engine would you say would be best to fit, i couldn't imagine a pinto engine being much better than the 1.8 cvh in it though

 

Perhaps not as standard, but it does have better tuning potential, it's 100HP out the box, CVH is 90, assuming both are carb versions.

Zetec conversions are proving popular with these now but you need to do quite a lot of work to get it fitted etc, again it will be mounted in a F/R configuration.

Martin

 

You'd get a fiesta Rs turbo lump in a day I. There. Already coil pack.
Hardly call it poinless with 190bhp easily got ?

 

cosworth 24v 200bhp out the box