help needed on inlet and cylinder head
Turbo Mini Forums

Hi i am bulding my self a turbo mini and have come across a problem about my cylinder head?
I have a std turbo head but i have lost an exhaust collet and cant seem to get one anywhere. so would it be ok to use a normal cylinder head with non sodium cooled valves i also have a howely inlet to match the cylinder head would it be ok to use that as well.
Any help would be gratefull.

hiya, welcome to the forums :)

i'm pretty sure that the collets are available from minispares, few pence each.

http://www.minispares.com/SearchResults.aspx?s=1&ss=collet

Edited by Mike on 2nd Dec, 2004.

Use the turbo inlet, its designed for the job and is much better at it than the N/A ones. (for turbo applications)

I have given minispares a ring and they dont have any? So the turbo inlet is the better out of the two. thanks for that.
also the n/a cylinder head i was thinking of using has been ported and has a lot of metal taken away from round the valve guides will this be ok on a turbo due to the extra heat?
I would like to use the head as it cost me a lot of money and it is very sexy and must be worth a few horse power over standard one. any reason why i shouldnt will you let me know.
by the was will 8.9:1 compresion be ok

AS you have found turbo exh valves have thicker stems and correspondingly bigger collets.

I might have a few lying around, drop me a PM.

8.9 will be ok, but not for much boost. The std engine was 9.5 so you have only gone down 0.5 which will only let you run a touch more boost than std, which was 7psi.

Alex

AlexF