Detonation need some help!
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 996
Likes: 0
From: Frisco Texas
Detonation need some help!
I have 55cc heads which puts compression around 12 to 1. When running around town town with the converter unlocked it is fine, but when the converter locks up I get 4-14 degrees of detonation from 1000-3000 then none after 3000.
I need to know if pulling a tone of timing and dumping fuel in that area will stop the detonation. I am getting some colder TR6 plugs and may get a bigger headgasket or some dished pistons to reduce some of the compression.
Any help would be apreciated!
I need to know if pulling a tone of timing and dumping fuel in that area will stop the detonation. I am getting some colder TR6 plugs and may get a bigger headgasket or some dished pistons to reduce some of the compression.
Any help would be apreciated!
Drifting
Joined: Nov 2003
Posts: 1,288
Likes: 2
From: tucson az
Re: Detonation need some help! (cscollis)
i am running 11.6 to1 and have an issue with detonation between 1500 to 2000 . very similar to yours have tried pulling timing , adding fuel, water injection, octane boosters. have found the best solution to be raising the octane by mixing 100 unleaded racing fuel with 91 . have a mix that works for me and allowed me to dial back some of the timing i took out.. 
choice is simple....raise octane or lower compression....i autocross mine and very much like the throttle response and lower rpm power.... i hate paying the high cost of race fuel but the only choice is to lower cr...i have found that 4 to 5 gals of 100 per fillup takes care of me....adds about 10 to 12 bucks a tank.....
choice is simple....raise octane or lower compression....i autocross mine and very much like the throttle response and lower rpm power.... i hate paying the high cost of race fuel but the only choice is to lower cr...i have found that 4 to 5 gals of 100 per fillup takes care of me....adds about 10 to 12 bucks a tank.....
