E85 timing
So what's the procedure for this?
Install new plugs at the track.
Drive to lanes, shut car down.
Restart a couple times while moving to the burn out box. (Ideally push car in lanes if possible)
Idle, burnout, make a pass, drive back to the lanes and pull plugs?
That's the only way I would be able to do it, being a street car and all.
Would it be prudent to bring several sets of plugs?
Install new plugs at the track.
Drive to lanes, shut car down.
Restart a couple times while moving to the burn out box. (Ideally push car in lanes if possible)
Idle, burnout, make a pass, drive back to the lanes and pull plugs?
That's the only way I would be able to do it, being a street car and all.
Would it be prudent to bring several sets of plugs?
So what's the procedure for this?
Install new plugs at the track.
Drive to lanes, shut car down.
Restart a couple times while moving to the burn out box. (Ideally push car in lanes if possible)
Idle, burnout, make a pass, drive back to the lanes and pull plugs?
That's the only way I would be able to do it, being a street car and all.
Would it be prudent to bring several sets of plugs?
Install new plugs at the track.
Drive to lanes, shut car down.
Restart a couple times while moving to the burn out box. (Ideally push car in lanes if possible)
Idle, burnout, make a pass, drive back to the lanes and pull plugs?
That's the only way I would be able to do it, being a street car and all.
Would it be prudent to bring several sets of plugs?
TECH Regular
Joined: Jul 2019
Posts: 460
Likes: 44
Only proper answer is check the plugs! Not sure why people routinely risk engines over a $16 set of plugs. Be friends with your plugs! Especially when you have your dick beaters all over the keyboard.
Built engines don't like detonation either. My built engine has a good bit higher compression than my SBE so to blindly give it more timing wouldn't work out very well. In all reality you usually end up running less timing on built stuff since there's no point to buying forged parts with thick deck heads unless you are gonna lay the pipe to it.
Built engines don't like detonation either. My built engine has a good bit higher compression than my SBE so to blindly give it more timing wouldn't work out very well. In all reality you usually end up running less timing on built stuff since there's no point to buying forged parts with thick deck heads unless you are gonna lay the pipe to it.
Just looking to see where most guys are at timing wise . I already know it picks up no mph adding timing above where it’s at. Doesn’t really matter what the plug reads if it picks up no power . I checked a plug and it looked like it could use more timing but if the power is not there why add it? Only thing I haven’t done is make a timing pointer and verify timing and that’s next.
Only cars I generally run 20+ deg of timing on E85 are LSA/LS9 builds and I always assumed it was because their heads had soft chambers and no exhaust backpressure as they will just sit there and take it and make power. Nothing else seems to like as much timing as those combos do, hell my 10:1 compression TT 427 at 20 psi of boost on E90 only picked up 5 horsepower going from 18 to 20 deg. It can pay to read plugs at least once or twice when you are starting to push it to really see where the limits are.
I’ll try some more fuel and see if it likes it . I’ve ran about a dozen on the dyno and never seen one make more at 11.5 afr then at 11.9 12.0 ish . I’ve picked up 4 mph going from 11.4 to 12.0 at the track 9.0 car at 3500 lbs
Last 5.3 I did on 20psi out the back went 160 at 3600lbs, never went over 11.4:1 A/F and was on 18*. Seemed to jam out just fine, I never felt the need to lean it out for more MPH.
TECH Fanatic
Joined: Dec 2017
Posts: 1,604
Likes: 1,085
If you are reading the plugs for fuel. I don't think that would work.
