its for a mk5 fiesta..
ST150?
ST170?
puma 1700cc?

Gearboxes??

cheers!

 

Whats car going to be used for?

 

St150 are shit st170 juicy and only good at high revs but great on throttle bodies for track, as an all rounder got to be 1.7 puma lump

 

yeah i was thinking the puma would be the one to go for.
its mainly going to be used on the road but i want to be able to take it to the track without loosing to everyone and everything though! ha

thanks very much

 

oh and i was wondering could you help me out with one other thing?

im wanting to convert the rear drums to dics and pads
any ideas on what hubs ill need calipers etc..?

thanks

 

Ford transit connect rear stuff should fit but remember to fit a brake bias valve to balance brakes

 

thanks a lot mate! haha yeah will do!

 

As for gearbox use puma box or frs box it has lsd

 

Didnt someone on here recently mention mk5 rs2000 engines are a pretty good candidate for a swap with the mk4/5 fiesta??

 

Please, do explain how the Duratec lumps are 'shit'?

Don't bother converting them, totally pointless on a mk5 and will make the back end very light under braking, spend the money upgrading the fronts instead.

As for your original question, depends on your budget. For a cheap track day car, and decent road car, just put the puma lump in. The engine/box will all bolt into the Fiesta, it's a very easy conversion to do.
The Duratec (ST150) lumps are good engines, and as they're all alloy, they're light to. But, they are still very expensive, and fitting on into a mk5 requires a hell of a lot of time, money and custom made parts!
The ST170(zetec) lump is heavier than the ST150, and I'd personally only use it if I was going to turbo it, as N/A gains will cost a fortune! It's also a lot more effort to get fitted and running in a Fiesta.

If I was you I'd just put the Puma engine in, mated to a Puma gearbox. Can do the conversion for a few hundred quid in a weekend if you're good with cars! Pop onto www.zsoc.com loads of people have done it, and there's guides etc. showing how easy it is. There's also people on there that can do the conversion for a very good price!