502 running
02-20-2023, 08:31 AM
#3
Registered
Thread Starter
.Yes blower sounds good but dit not change ballbearings inside.I guess the problem was in wrong cam timing.When i adjusted the cam and put it where it should be the horrible sound went away on it's own.
02-20-2023, 08:32 AM
#4
Registered
iTrader: (1)
02-20-2023, 08:47 AM
#5
Registered
Thread Starter
Ha ha ha...But as allways a problem started..not a big one but a problem.So when i start the engine and he is cold he works ok 600-700 rpm..But when he gets hot he drops down and want's to die..Then i screw in the trotlle blade screw and ewerything is ok working great..But when it gets cold again and i start the engine he is working over 1000 rpm.So im spining in circle dont know what to do.
02-28-2023, 08:21 AM
#6
Registered
Thread Starter
Good day to all of you...Can some of you tell me what should be Piston/wall clearence on my cheavy 502 with H127CP pistons(hipernautic)..Hope you all are warm and safe...thanks
02-28-2023, 10:36 AM
#7
Registered
Hypereutectic.
Stock 502 with forged pistons runs about .005 inch, if I recall, maybe up to .006 but not sure how that translates to using a Hypereutectic piston which is going to expand at a different rate than a forged piston.
Stock 502 with forged pistons runs about .005 inch, if I recall, maybe up to .006 but not sure how that translates to using a Hypereutectic piston which is going to expand at a different rate than a forged piston.
Last edited by DrFeelgood; 02-28-2023 at 10:39 AM.
02-28-2023, 11:02 AM
#8
Registered
Thread Starter
Thank you professor for your time...I can't find anywhere how muc pistons expande.Looked all of your posts with that topic but nothing..
02-28-2023, 11:17 AM
#9
Registered
I will ask, though, why you chose hypereutectic pistons for a forced induction application? Forged would be better.
02-28-2023, 11:30 AM
#10
Registered
Thread Starter
The engine came with them...But i read that some guys have them on small boost engines and work fine.When i go to summit racing page where i found som spec for the pistons it does not say how much they expand...I read some threads where people say that forged pistons exspand the least and stock pistons expande the most so i guess my are somwere in the midle
