05/11/2025
Update 11/24/2025
Engine back in car. Appears to run great, fully forged internals now. Need to finish a few break in cycles drian the oil and analyze. If All good, schedule a dyno session and see where to class this thing. I am still going to sell. Price is gong up though.
Well, I have been chasing a boost issue for some time. the culprit was a bad connector at the boost control module, but no code fired and everything seemed to be working, but just like every rookie, I threw parts at it, new turbo, new downpipe, replaced vacuum tank, replaced vacuum control module, replaced every vacuum line, replaced intake manifold and lastly put a new tune on the car. I was till not making boost.
Started pulling every connector on that side of the engine harness. TaDah! Found the problem. Swapped connectors at the boost control module, and
WOW! Boost Gods arrived. This thing was a rocket!
Well, right then I should have just put the old stock turbo back on the car and the old tune. But no, i got greedy! Mo Powah!
It doesn't work like that. I was running a stock compression ratio and stock pistons. Something had to give, Piston 2 gave up the ghost, see pics. Too much boost. Downloaded the datalogger, thank you AiM Dash. The engine hit 25 lbs of boost (not good) went lean as there is only so much fuel you can give this thing (maybe bigger injectors? somebody shoot me) it began to detonate and that piston fu**ed off!
It blew the dipstick out of the block and sprayed oil everywhere out of that hole...thank god.
Tore engine down completely and everything looks good, cleaned out oil pump etc, head looks fine, et al.
block is good, did not blow head gasket.
New CP forged pistons lowering the compression ratio to 9:1 are on tap. I am going to leave the new turbo etc on it, but have it detuned. I don't need that much power for the class I want to stay in on the track.
Race It, Break It, Fix it, Repeat!i
