my 408 tsp motors chirping help please
#1
my 408 tsp motors chirping help please
So I have a 408 motor from texas speed with their 247 heads and ms4 cam in dd camaro for about 10k miles now. Two weeks ago I had a problem with cylinder 7 missfire well that problem either fixed it self or the alternator actually fixed it which makes no sense. Tje conpressions good on all cylinders just about 200psi. Now with the belts off im hearing a chirping noise sounds just like a belt that gets louder with the Rpms. The oil pressure is also noticeably lower then it was and the needle on the cluster slightly bounces at idle around 30-40psi. I feel like a lifters taking a dump but I need some guidance asap please.
#2
I've tried searching for a way to test lifters still inside the engine but didn't really find anything useful. Maybe you could remove the pushrod/rocker arm from the #7 cylinder and hold the lifters up with pen magnets and see if the noise goes away. Then you could be certain it's a lifter. Another thing you could do is make a recording, and count how many chirps you get per minute or per 10secondsX6, if it's the same as your engine RPM it's crank/piston related if it's half the engine rpms it's in your valvetrain.
#5
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I've tried searching for a way to test lifters still inside the engine but didn't really find anything useful. Maybe you could remove the pushrod/rocker arm from the #7 cylinder and hold the lifters up with pen magnets and see if the noise goes away. Then you could be certain it's a lifter. Another thing you could do is make a recording, and count how many chirps you get per minute or per 10secondsX6, if it's the same as your engine RPM it's crank/piston related if it's half the engine rpms it's in your valvetrain.
#6
TECH Enthusiast
So I have a 408 motor from texas speed with their 247 heads and ms4 cam in dd camaro for about 10k miles now. Two weeks ago I had a problem with cylinder 7 missfire well that problem either fixed it self or the alternator actually fixed it which makes no sense. Tje conpressions good on all cylinders just about 200psi. Now with the belts off im hearing a chirping noise sounds just like a belt that gets louder with the Rpms. The oil pressure is also noticeably lower then it was and the needle on the cluster slightly bounces at idle around 30-40psi. I feel like a lifters taking a dump but I need some guidance asap please.
Comp cams has has problems with cam lobe failure . . .
https://ls1tech.com/forums/generatio...comp-cams.html
https://ls1tech.com/forums/generatio...am-change.html
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#9
TECH Fanatic
I'd call TSP and see if they're willing to help you with the problem. As Comps largest seller of LSx cams I'd hope they could at least get you a free replacement cam and lifters, it's not like they can blame it on installer error.
#11
I called tsp numerous times. They told me id have to send them the entire motor but they doubt they could do anything for me since i had the motor for over a year and they have no idea what it was used in. They did give me cost on all the parts i needed though so i really cant complain at all. I didnt even expect that much out of them so i really am thankful