you did 160+ with 230bhp...you gotta be crackin' 185mph with 300bhp

(haha couldn't resist )

But in seriousness, decent engine spec, will serve you well. Good luck.

 

With ease! lol

But yeah cheers dude, almost ready to roll now just need manifolds and gaskets... Oh and an alternator pulley!

 

Any chance of some pics of the parts your using and pics of the build like you did in you write up on MS?

 

Will do Geoff, had no motivation recently and I've been in Cyprus for the last week so not really done anything, still trying to decide what to do about the exhuast manifold too..

 

Just re reading through the posts with a friend as he is looking at doing the same sort of thing. What are the valve spring shims used for?

 

more boost at high rpm.

 

Are they the same as standard but thicker and where could i get some of these? Do you use the satndard spring or still replace them with hight poundage?

 

depends what you want! karlos has fitted st170 springs into a blacktop head with 3mm shims under them, they are a higher poundage than the standard blacktop springs and he had them sitting there , i run up-rated springs with 3mm shims under them because it allows me to run about 5-6psi more when over 7k rpm and a hell of a lot cheaper than going for the double spring kit.

if i were buiding a cheap zetec again i would be trying 106gti springs!!!

 

what psi will the st170 springs and the 3mm spacer hold?

 

If you decide to use the 106gti/saxo vts springs, make sure you use genuine parts. A lot of aftermarket pattern manufactures list zetec and these as the same part and theyre not the same poundage.
I have some shims made for my springs at a local engineering firm, lad did it in his lunch hour and charged me a fiver

 

Mad as fuck mr g