Valve Retainers and Top Caps
Turbo Mini Forums

I've taken apart two heads, one standard 998c head, one 12g295 head.

The 998 has the three groove retainers and the 12g295 has the circlip style retainers. I am using the exhausts from the 998 and the intakes from the 295.

The 295 had double valve springs which I would like to use on all 8 valves.

SO, my question is:
Can I use the three groove retainers with the double spring top caps?
OR:
Can I use the single spring top caps with double springs?

Thanks!

Yes! as long as the same caps go with the same collets and same valves.
EDIT:- single or doube springs doesent make any diffrence ................ but i just would use double springs for all the head, no problems there.
if you want any new valves springs stem seals or what ever from the uk give me a pm i will help you out.

Edited by BENROSS on 28th Feb, 2014.

Great! Top caps, collets and valves stay together but springs can change? Sounds good!

Not all retainers are suited to double springs. Check that as well.

What's the easiest way to tell if they are suited to double springs?
It looks like the doubles have slightly sharper corners at the spring steps but the single retainers seem to fit the double springs fine.