White specks on pistons and heads, also issues
09-18-2017, 10:06 PM
#101
Super easy to data log the exhaust pressure VS manifold and overlay them with 1 $16 0-100 pressure sensor VS map. Watching a gauge IMO is pretty outdated and difficult in a drag car.
Most mild single setups like the OP's are going to have much higher drive pressure than manifold anyway. Even my stockish 4.8 (292") is around 1.4:1+ @ 20lbs. 370" was around 2:1. Using the big 1.32 T6 housing S480. You need the big boy Garrett 111mm exh wheels to see 1:1 with these engines and a single.
Most mild single setups like the OP's are going to have much higher drive pressure than manifold anyway. Even my stockish 4.8 (292") is around 1.4:1+ @ 20lbs. 370" was around 2:1. Using the big 1.32 T6 housing S480. You need the big boy Garrett 111mm exh wheels to see 1:1 with these engines and a single.
Last edited by Forcefed86; 09-18-2017 at 10:20 PM.
09-19-2017, 10:41 AM
#102
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Delta-P = Performance Hi Dave, I doubt you will ever find your "hot" side going into Choke.
You could find, I find, that when the MAP is greater than the EMAP, the engine will have GREAT performance.
This IS the target, a common range of 1000 RPM.
As for miss-fire, how do YOU log your report ?
My method is to measure Crankshaft Acceleration with the 60-2 (59 tooth) TW.
I FIND that BAD combustion SLOWS DOWN the crankshaft, an EASY measurement.
Lance
You could find, I find, that when the MAP is greater than the EMAP, the engine will have GREAT performance.
This IS the target, a common range of 1000 RPM.
As for miss-fire, how do YOU log your report ?
My method is to measure Crankshaft Acceleration with the 60-2 (59 tooth) TW.
I FIND that BAD combustion SLOWS DOWN the crankshaft, an EASY measurement.
Lance