Its a 99 b18b the numbers are

175, 180, 160, 190

Cylinder 3 is low. I have a 2 layer head gasket. Nothing leaks out the gasket or anywhere else on the head. I just put on a ported and polished head with crower 403 and valve train. Tell me what you guys think, do you think I will need to rebuild soon?

 

My opinion, no. 160 isn't that bad. When my rings were shot, I was burning oil REALLY BAD. I had 80 for compression. When I rebuilt, all 4 were 190-195.

 

Well, I am going by the HAynes manual for my 1989 Integra LS. Basically the general rule is not over 15% variance from the highest. 190-160 is over 15% by just a little. Try to determine if the cylinder is bad due a bad valve or ring. Inject some oil in and if the compression comes up fast then it is probably a bad ring,but if it doesn't it is likely a valve. You can probably get by with the variance but your car might run a little rough. You might get the Auto parts store and add a can of the special oil they sell and it might bring the compression up on that cylinder.

 

"Restore" is what it is called. It does work.

 

My compression # are 150 155 154 157 is this low for a 2001 se non vtec motor. Thanks

 

have you tried starting it yet? or did you just did a compression test?

 

the higher lift/duration of the 403 cams will change your dynamic compression, you have more overlap now so your numbers are going to be lower.

the stock specs don't exactly apply when you swap in new cams with big lobes,

definately something wrong with cylinder3 though,