toomuchhorrorbusiness Posted May 10, 2010 Report Posted May 10, 2010 I got 215 and 220. Isn't that race fuel territory? This is my first banshee and I bought it as it. I pulled the motor and replaced the crank seal after I bought it but haven't messed with anything else. It has a cool head but I'm not sure what domes are in it yet. I've been running it on 93 octane and Golden Spectro oil. I've noticed it ping a few times but not consistently. Is 93 octane high enough for this compression? Should I replace the domes to knock down the compression? I've ran about 4 tanks through it already so if I were to have a problem wouldn't it of already occurred? Thanks for any insight. Because everyone likes pics !: Quote
locogato11283 Posted May 10, 2010 Report Posted May 10, 2010 what kind of compression tester? i think yours is off. at that high of compression you would need to be running straight 110 octane to not have problems. if youve put 4 tanks of 93 through it that would lead me to believe your tester is off. Quote
toomuchhorrorbusiness Posted May 10, 2010 Author Report Posted May 10, 2010 what kind of compression tester? i think yours is off. at that high of compression you would need to be running straight 110 octane to not have problems. if youve put 4 tanks of 93 through it that would lead me to believe your tester is off. It's a Snap-on tester. Before I did the crank seal (and my right cylinder was getting a lot of oil in it) I did a compression test and the left side read 215 and the right read about 165. I guess the oil effected it. I thought it was strange then. The other test was done with another Snap-on tester and they're both reading high. I would think a faulty compression gauge would read low, not high. Quote
locogato11283 Posted May 10, 2010 Report Posted May 10, 2010 i dont know about the tester. what i do know is that you probably better start running some higher octane fuel to avoid blowing it up. right now it sounds like a recipe for disaster. Quote
toomuchhorrorbusiness Posted May 10, 2010 Author Report Posted May 10, 2010 i dont know about the tester. what i do know is that you probably better start running some higher octane fuel to avoid blowing it up. right now it sounds like a recipe for disaster. I'm really surprised I haven't melted the pistons yet. I'll get a hold of another tester and see what the results are. I'd rather run different domes then run race fuel. Quote
firebanshee Posted May 10, 2010 Report Posted May 10, 2010 You would need 21cc domes at sea level to run 93 octane. Quote
toomuchhorrorbusiness Posted May 11, 2010 Author Report Posted May 11, 2010 You would need 21cc domes at sea level to run 93 octane. Thanks, I'll pull the head tonight and see what's going on in there. With compression that high, wouldn't the plugs start to back themselves out? Quote
RadarRacing Posted May 11, 2010 Report Posted May 11, 2010 If a motor is cool and or rich they won't detonate as easily. That may explain why you have gotten away with it for now. Put more load on it like in sand or ride it harder or hotter and you might have problems. Domes are only about $70 or so I'd switch em. 1 sign of detonation will be pitting in the dome. Quote
ClimbAnyHill Posted May 11, 2010 Report Posted May 11, 2010 I would stop running it now.. Try a different compression tester to verify those readings. If you don't need that type of compression then switch the domes. What elevation are you at? Quote
toomuchhorrorbusiness Posted May 12, 2010 Author Report Posted May 12, 2010 If a motor is cool and or rich they won't detonate as easily. That may explain why you have gotten away with it for now. Put more load on it like in sand or ride it harder or hotter and you might have problems. Domes are only about $70 or so I'd switch em. 1 sign of detonation will be pitting in the dome. I'll pull the head and take a look I would stop running it now.. Try a different compression tester to verify those readings. If you don't need that type of compression then switch the domes. What elevation are you at? I've rode this bike hard in the past 2 weeks. If something were to blow I think it would of happened by now. I'm in NJ. About 100' Quote
SLORYDER Posted May 12, 2010 Report Posted May 12, 2010 (edited) It's a Snap-on tester. The other test was done with another Snap-on tester Well dats you problem sha.. You need to get one that screws in Edited May 12, 2010 by SLORYDER Quote
toomuchhorrorbusiness Posted May 12, 2010 Author Report Posted May 12, 2010 (edited) Well dats you problem sha.. You need to get one that screws in Edited May 12, 2010 by toomuchhorrorbusiness Quote
SLORYDER Posted May 12, 2010 Report Posted May 12, 2010 huh? Don't tell me that one went over your head Quote
locogato11283 Posted May 12, 2010 Report Posted May 12, 2010 Don't tell me that one went over your head hahaha, that shits funny. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.