Hey peter what kind of setup do you run and how much boost are you pushing? What kind of EGT's are you running @ and how many ponys are you generating?
Max boost on 1hd-ft
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Tapage
Club 4X4 Panamá
Behemoth60 said:
I thought if gona pay for all break engines ..
all can do that .. ! ( joke )
blownbj said:
AXT turbo kit on a 3B with the high-nickel aftermarket head. Wastegate signal line is tied off so the wastegate doesn't open. Actual boost is unknown as it pins the 0-15 PSI gauge. Max EGT I've seen since I've turned it up has been 400C. Keep in mind, this is strictly an off-road wheeling rig. That 400C EGT was when I was bombing down the road for 1/2km to fling the mud out of the tires.
Peter Straub
Since you have the wastgate "pinched off" I am assuming you were going for low to midrange horsepower for wheeling. Just curios but when approx. do you think the turbo is hitting max boost (at what rpm). I have always wondered what would happen if i did not allow a turbo to have the ability to bleed pressure.
On deceleration what has been your experience?
Cheers
Challis
On deceleration what has been your experience?
Cheers
Challis
Sorry one more question.
Have you had any indication of the turbine surging or pulsing at idle with the gate pinched ?
Very interesting topic thanks for your experiment.
Challis
Have you had any indication of the turbine surging or pulsing at idle with the gate pinched ?
Very interesting topic thanks for your experiment.
Challis
silvercrusher said:
No. Blowers are for low/mid range power. Turbo's make best top end power. That's what I need for for mud and hill climbs. the 3B makes enough low and mid range power.
silvercrusher said:
4000 RPM. With the waste gate closed, more RPM = More boost.
I have always wondered what would happen if i did not allow a turbo to have the ability to bleed pressure.
silvercrusher said:
Quite often, it's sadness at having to slow down. Other times, it's delight and relief, such as when slowing down at the edge of a road-runnerian cliff.
silvercrusher said:
Surging and pulsing are two different things. Surginging is when the compressor is turning too fast for the air it is pushing. This is caused by a mis-matched compressor, and I've heard can cause catastrophic failures.
Pulsing is a feedback loop from the wastegate. Pressure builds up, the wastegate opens and slows the compressor. The pressure drops and the waste gate closes. Pressure builds up, the wastegate opens... Repeat every 1/2 seconds or so. This can solved by putting a very small, like itty bitty, I mean, line between the pressure sender and the wastegate actuator so the pressure changes slowly in the wastegate actuator. Or, pinch off the wastegate entirely.
I've never had surging, but did have pulsing before I closed off the wastegate. Neither should ever happen at idle.
Peter Straub
