knocking after 3000rpms?

bigd112 · 02-09-2010, 09:36 PM

i am new to this forum and i just bought a 1989 supra. the car had an engine swap (7mgte) and a tranny swap (r154) about 1.5 years ago. he use to drive it as a weekend car and the rest of the time it sat around. all that is done to it is a 3" down pipe and 3" catless exhaust, 2.0mm head gasket with arp headstuds 90foot bound. one day he stated it up and it knocked after 3500rpms or so. it doesnt sounds loud at all, i dont know what it could be, rod knocking is too deep and is real loud at all rpms and valve tap is constant and doesnt start at higher rpms. it sounds like it is coming from the back left of the motor(if you are sitting in the driver seat).

PLEASE HELP!! thanks!

02-09-2010, 09:36 PM	#1
bigd112 Stock Join Date: Feb 2010 Location: lancaster pa Posts: 9	knocking after 3000rpms? i am new to this forum and i just bought a 1989 supra. the car had an engine swap (7mgte) and a tranny swap (r154) about 1.5 years ago. he use to drive it as a weekend car and the rest of the time it sat around. all that is done to it is a 3" down pipe and 3" catless exhaust, 2.0mm head gasket with arp headstuds 90foot bound. one day he stated it up and it knocked after 3500rpms or so. it doesnt sounds loud at all, i dont know what it could be, rod knocking is too deep and is real loud at all rpms and valve tap is constant and doesnt start at higher rpms. it sounds like it is coming from the back left of the motor(if you are sitting in the driver seat). PLEASE HELP!! thanks!