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AFR Cylinder Head Piston Profile

Posted: Wed Aug 17, 2016 5:47 pm
by Lamaddict
I bought one and it looks nicely made compared to the SIL ones. I forgot to ask them when I bought it but is the profile okay for a standard Italian 200 piston head? I don't know how to check it myself and was hoping someone would know.
I've phoned Rayspeed up and sent them emails etc but can't get a reply. They are a good shop and good guys bytheway, it's just a shame I can't get an answer.

Re: AFR Cylinder Head Piston Profile

Posted: Fri Aug 19, 2016 2:56 pm
by Lamaddict
Anyone got any idea?

Re: AFR Cylinder Head Piston Profile

Posted: Fri Aug 19, 2016 3:35 pm
by drunkmunkey6969
Yes, it should be fine.

But to check...dry fit it, and compress solder as you would for squish setting......then measure the profile of the solder.

If its parallel (equal at tip, middle and bottom) its fine, if its divergent (thin at edge - getting fatter toward centre) its fine, if its anything else....convergent/concave....id probably not use it.

Re: AFR Cylinder Head Piston Profile

Posted: Sun Sep 11, 2016 4:32 pm
by Lamaddict
Put it on, squish is 1.35, runs well but with the plug out its making a ticking sound when I kick it over. I guess the piston could be touching the head but it runs okay?

Re: AFR Cylinder Head Piston Profile

Posted: Mon Sep 12, 2016 11:27 pm
by Lamaddict
Anyone? Before I strip it down. I'm thinking it could be a high compression noise? Never had it before.

Re: AFR Cylinder Head Piston Profile

Posted: Mon Sep 12, 2016 11:32 pm
by bazza3004
Put a cross of solder on crown so its touching edge in 4 places and check the sqiush of all 4