Piston/valve Clearance

[tarmac]

Running a 30 block, 25 head, 1.3mm thick headgasket, hks stage 1 rb25det cams with 8.8mm lift.

Using the spool RB30DET kit, with 9:1 compression.

Any ideas if the clearance will be ok?

Edited July 29, 2012 by tarmac

[KiwiRS4T]

As they are purpose made for the job I would think so or you could ask Spool or assemble it up and put some plasticene on top of the piston and turn it over by hand and have a look at the impressions.

[r33_racer]

That will have plenty of clearance so long as your head hasn't been decked a million times. We have run up to 10.2mm lift with 9:1 pistons and a head skimmed numerous times and pistons at 0 deck height.