 Race engine piston to cyclinder clearance, How much is too little? |
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| Driver174 |
 Jun 17 2018, 11:07 AM
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Member  Group: Members Posts: 106 Joined: 2-February 17 From: Nevada Member No.: 20,806 Region Association: None 
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914-4 2.0L approx. 10.5:1, JE forged 2618 Aluminum pistons, Web 163/86b cam
JE clearance guidlines say to set clearance to .0035" along with a note "some applications may require more clearance". I had cyclinders bored 0.75 mm oversize with piston clearance of 0.0035", but am having second thoughts; maybe should of increased clearance to .0045. Engine will see road racing conditions, so will get run hard for 20-30 minutes or more during each race. Should I increase the piston clearance? I'm assembling the engine now so it's not too late to address. Thanks, Jim |
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Posts in this topic
Driver174 Race engine piston to cyclinder clearance Jun 17 2018, 11:07 AM
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