Compression test. Should I be worried.
Compression test. Should I be worried. Okay on my H/C/I. 93 Ta. I ran a compression test on it. She has about 150,000 mi. on her. she carries 20lbs. of oil pressure when warmed up at idle. and 40 going down the road when warm.
Question is, I broke a valvespring a few yrs. ago, and it kissed a piston, it chipped the top corner of the piston. I replaced the valvespring/pushrod/Valve. I then sold the car last yr. and bought it back this yr.The person I sold the car to also broke a valvespring, but just replaced the valspring. She never pulled the head.I did check the pushrod,and it was not bent. I did the compression test and the numbers were 165 on some of the cylinders and up to 185 on others. Just curious, could I still have a bent valve? Car doesn't seem to be missing, or popping or backfiring. Would a bent valve not build up compression? When I broke the valvespring, the valve was bent and was in the closed position.But didn't pop or backfire. Im taking the car for a good dynotune next month,and just want to make sure it's tip top. If I have to I will pull the head, but Im just wanting to know if the compression test would show a bent valve?
and do the compression numbers still show a halfway healthy motor? thanks.
Question is, I broke a valvespring a few yrs. ago, and it kissed a piston, it chipped the top corner of the piston. I replaced the valvespring/pushrod/Valve. I then sold the car last yr. and bought it back this yr.The person I sold the car to also broke a valvespring, but just replaced the valspring. She never pulled the head.I did check the pushrod,and it was not bent. I did the compression test and the numbers were 165 on some of the cylinders and up to 185 on others. Just curious, could I still have a bent valve? Car doesn't seem to be missing, or popping or backfiring. Would a bent valve not build up compression? When I broke the valvespring, the valve was bent and was in the closed position.But didn't pop or backfire. Im taking the car for a good dynotune next month,and just want to make sure it's tip top. If I have to I will pull the head, but Im just wanting to know if the compression test would show a bent valve?
and do the compression numbers still show a halfway healthy motor? thanks.
If you are going to dedicate this kind of time to a car that is no longer yours then you should probably find out why valve springs are breaking. Normally when a piston is damaged it can cause hot spots eventually burning a hole into the piston. Rule of thumb is cylinders should be within 10% of the highest reading. What cam do you have?
Yes if a valve is bent enough compression can leak past the valve seat and can possibly burn up the valve.
Yes if a valve is bent enough compression can leak past the valve seat and can possibly burn up the valve.
If you are going to dedicate this kind of time to a car that is no longer yours then you should probably find out why valve springs are breaking. Normally when a piston is damaged it can cause hot spots eventually burning a hole into the piston. Rule of thumb is cylinders should be within 10% of the highest reading. What cam do you have?
Yes if a valve is bent enough compression can leak past the valve seat and can possibly burn up the valve.
Yes if a valve is bent enough compression can leak past the valve seat and can possibly burn up the valve.
Yeah its my car again. The cam is a cc306. The springs were crappy kmotion
K-750's. Single coil. Head porter put them on when. I had the heads done.
Now comp beehives. I didn't know I had to pull all the plugs out. I just pulled. One
at a time. I will re do the test then. I'm running crane gold 1.6 rr's.
Thanks for the help. Sorry for crappy wording. I'm on my cell.
K-750's. Single coil. Head porter put them on when. I had the heads done.
Now comp beehives. I didn't know I had to pull all the plugs out. I just pulled. One
at a time. I will re do the test then. I'm running crane gold 1.6 rr's.
Thanks for the help. Sorry for crappy wording. I'm on my cell.
