davidonmars Posted May 2, 2013 Report Share Posted May 2, 2013 Can anyone tell me why my Spark plugs are Coming loose? It's a cool head with 20cc 4 mill domes running 94 octane Quote Link to comment Share on other sites More sharing options...
rubberneck Posted May 2, 2013 Report Share Posted May 2, 2013 detonation. im not sure of your elevation but at sea level with 20cc domes on a 4mil i run 110 octane Quote Link to comment Share on other sites More sharing options...
Finch Posted May 2, 2013 Report Share Posted May 2, 2013 put them in tighter. Or fix your problem and run either bigger domes, or better fuel. Quote Link to comment Share on other sites More sharing options...
shanYE west Posted May 2, 2013 Report Share Posted May 2, 2013 Trinity plug lock 1 Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 At 155 psi I didn't think I'd need higher octane. I'm about 1000 above sea level Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 They were 23 mm I believe but then cut for 4mm dome has some engraving 20 13 115 Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 Stock timing Quote Link to comment Share on other sites More sharing options...
rubberneck Posted May 2, 2013 Report Share Posted May 2, 2013 hmmm 150 psi? you sure your gauge is accurate. mine kicks 180 on a snap on guage Quote Link to comment Share on other sites More sharing options...
sheerider1026 Posted May 2, 2013 Report Share Posted May 2, 2013 Im running 160 on 93 pump. No issues. Dome design can make or break ya Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 I'm not sure who cut them I bought them off a member o the board. As far As I can tell reading the numbers done Volume is 20cc squish angle is 13 and 115 for long rod. Stock timing stock carbs 330 mains. I'll have to use another gauge tonight Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 Was using klotz super techniplate mixed 40:1 using 94 octane. Quote Link to comment Share on other sites More sharing options...
lms1977 Posted May 2, 2013 Report Share Posted May 2, 2013 How wide is the squish band what is the clearance etc?? Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 Well race fuel is not readily available where I am not would I even know where to get it. I'd hate to spend even more Money buying another set of domes and have them cut. Can someone help me Out? Anyone want these domes For a different set More pump fuel friendly? Quote Link to comment Share on other sites More sharing options...
davidonmars Posted May 2, 2013 Author Report Share Posted May 2, 2013 Who's the best place To get them and can I get a number Quote Link to comment Share on other sites More sharing options...
shanYE west Posted May 2, 2013 Report Share Posted May 2, 2013 Quote Link to comment Share on other sites More sharing options...
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