Post by mthibbitts on Aug 9, 2023 11:25:30 GMT -5
Hi All,
I just got my new BoPort short block and new Pimpx ECU installed and drove it last weekend in my rock crawler. The current tune was set up for 93 octance but we only have 92 here. I noticed it would ping so I backed boost down and stayed out of the skinny pedal.
Got it dyno tuned yesterday and the tuner thinks the ignition system is weak as the engine sounded loaded up in higher rpms with boost. In order to prevent it from pinging they also altered the fuel and retarded the timing as much as possible. I can only able to run 14lbs before it starts pinging. The only thing that changed from before is the cam gear has been advanced or retarded by Bo. I can't recall which direction but it's for torque. Could too much advance/retard of the cam gear cause detonation? (all new within the last 6 months, TFI, cap and rotor, coil, wires, plugs).
The tuner pulled a spark plug and its gapped at 26 thousands. This Esslinger head uses 12mm motorcylce plugs. I currently am running the autolite copper 4132's. Do I need to reduce gap? Is the spark plug too hot causing detonation? Any recommendations on a good plug to use for this head with stock ignition?
Specs:
Boport short block with cp pistons and HD rods.
Esslinger aluminum head
Boport 2.1 torque cam turbo and solid lifters
Stock IHI turbo Manual boost controller
Stock injectors
Adjustable fuel pressure regulator
Stock upper and lower intake manifold with some port matching
Ported polished exhaust manifold
PIMPx ecu
C4 auto
4 spd transfercase
14 bolt rear axle
At 14lbs of boost it only made 140 hp and 160 tq. Seems to be on the low side but I dont know for sure how much drivetrain loss I should be considering. The tuner did mention that there is a fair amount of slippage int the transmission due to not having a locking torque converter.
Any insight is appreciated.
I just got my new BoPort short block and new Pimpx ECU installed and drove it last weekend in my rock crawler. The current tune was set up for 93 octance but we only have 92 here. I noticed it would ping so I backed boost down and stayed out of the skinny pedal.
Got it dyno tuned yesterday and the tuner thinks the ignition system is weak as the engine sounded loaded up in higher rpms with boost. In order to prevent it from pinging they also altered the fuel and retarded the timing as much as possible. I can only able to run 14lbs before it starts pinging. The only thing that changed from before is the cam gear has been advanced or retarded by Bo. I can't recall which direction but it's for torque. Could too much advance/retard of the cam gear cause detonation? (all new within the last 6 months, TFI, cap and rotor, coil, wires, plugs).
The tuner pulled a spark plug and its gapped at 26 thousands. This Esslinger head uses 12mm motorcylce plugs. I currently am running the autolite copper 4132's. Do I need to reduce gap? Is the spark plug too hot causing detonation? Any recommendations on a good plug to use for this head with stock ignition?
Specs:
Boport short block with cp pistons and HD rods.
Esslinger aluminum head
Boport 2.1 torque cam turbo and solid lifters
Stock IHI turbo Manual boost controller
Stock injectors
Adjustable fuel pressure regulator
Stock upper and lower intake manifold with some port matching
Ported polished exhaust manifold
PIMPx ecu
C4 auto
4 spd transfercase
14 bolt rear axle
At 14lbs of boost it only made 140 hp and 160 tq. Seems to be on the low side but I dont know for sure how much drivetrain loss I should be considering. The tuner did mention that there is a fair amount of slippage int the transmission due to not having a locking torque converter.
Any insight is appreciated.