BrianEb Posted November 30, 2005 Report Posted November 30, 2005 If you are going to advance your timing to a +3 or +4 is it a given to run race gas or will 94 octane work? signed still learning all I can Quote
hittintrees srh Posted November 30, 2005 Report Posted November 30, 2005 Na, If all your doing is adding 3 or 4 degrees to your timming, Pump gas would be fine. But im also guessing that your compression isnt any higher than around 150psi. You wont have to worry about using race fuel untill you go to +7 or higher-or much higher than 150 psi. Quote
bigboybanshee Posted November 30, 2005 Report Posted November 30, 2005 It depends on how much compression you're running. For instance, I was running 150 psi in both cylinders with +4 timing on 93 octane gas; no problems at all. If you are near the 160 psi range and you want to advance your timing, you'll probably want to go to a 50/50 race gas/pump gas mix. Do you know what compression you're running now? That way we could tell you for sure what would be ideal for you to run Quote
lonestar Posted November 30, 2005 Report Posted November 30, 2005 If you are going to advance your timing to a +3 or +4 is it a given to run race gas or will 94 octane work? signed still learning all I can 443295[/snapback] Anytime you advance your timing. Your motor temp will rise. If it starts pinging stop the music. Go up on the octane. Quote
BrianEb Posted December 1, 2005 Author Report Posted December 1, 2005 Thanks to everyone who has replyed, I don't know my compression numbers right off the top of my head but I do know My head is stock my cylinders are stock pistons are stock And I plan on getting a Vito's Hemi Head for Xmas and I want ot run 21cc domes with advanced timing of +3 or +4 for some more low end torque Quote
2003LimitedBanshee Posted December 2, 2005 Report Posted December 2, 2005 Personally I would run a mix of race gas. I run a 40% mix of Trick 116 and Premium 91. You shouldn't need to run this mix, but really if you break it down a 40% mix in a five gallon jug will cost you about $4 dollars more than running straight 91 octane, pretty cheap insurance. Timing does definitely play a factor in running race gas, most say compression is the only significant factor, but timing has its effects. Quote
hittintrees srh Posted December 2, 2005 Report Posted December 2, 2005 And I plan on getting a Vito's Hemi Head for Xmas and I want ot run 21cc domeswith advanced timing of +3 or +4 for some more low end torque 443660[/snapback] Why not get a noss head-you get a discount for being an HQ member-just a thought. Quote
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