tarmac Posted July 29, 2012 Share Posted July 29, 2012 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/405822-pistonvalve-clearance/ Share on other sites More sharing options...
KiwiRS4T Posted July 29, 2012 Share Posted July 29, 2012 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. Link to comment https://www.sau.com.au/forums/topic/405822-pistonvalve-clearance/#findComment-6464574 Share on other sites More sharing options...
r33_racer Posted July 29, 2012 Share Posted July 29, 2012 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. Link to comment https://www.sau.com.au/forums/topic/405822-pistonvalve-clearance/#findComment-6464625 Share on other sites More sharing options...
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