Post your turbo, timing, fuel and fuel ratio!

[blackrosenova400]

I was told by a gentleman at Map that running 8's with e85 could cause something called spark freeze or cylinder freeze. I dont remeber which one he said. but he said that running too cold of a spark plug may cause detonation.

He said he runs 7's gapped at .22 running 28 psi on his EVO, so I dunno.

[Shane@DBPerformance]

Running too cold of a plug can cause misfires and and misfires often show up as knock or cause actually knock.

[Shane@DBPerformance]

Usually though, the main reason to not run too cold of a plug is to avoid fouling at part throttle/idle.

[blackrosenova400]

Yeah I knew that, but ive never heard of cylinder or spark freeze, or whatever he said. Do you know what it is? Im think im gonna get 8's and gap then to .020-.022

[blackrosenova400]

Also could you explaine to me the behaviour of having spark plugs gapped too high? Misfire, detonation?

[asshanson]

Also, whats the disadvantage of having them gapped too low? Such as .018 or something.

[blackrosenova400]

I know the higher the cylinder pressure, the harder it is for the plug to fire.

Tv picture tubes are actually in vacuum so it can shoot electrons across the screen. <----- Neat tid bit

I just want to know if it can cause detonation.

[CarPsyco84]

E85
AFR's around 12ish
timing was like 20-22... stock plus 3.
21-22psi.
That seem like alittle much on the timing?

[Tachyon]

E85
14b
20 PSI
~11.5 AFR (petrol scale)
20* of advance @ 6500 RPM

No knock yet!

[Shane@DBPerformance]

Too big of a gap can misfire under boost/hiogh cylinder pressure. Too small of a gap can make idle and part throttle drivability worse.