well i did a compression test on my friend motor. It a stock b16 head, stock gsr bottomend with 12:1 pistons. when i did the test it got 240psi across the board but I thought with 12:1 c/r it should be about 280psi. to me it look like it has stock pistons. does anyone has a stock gsr motor that compression test there motor with 240psi.............. thanks

 

bump........ anyone

 

my jdm motor had that kind of compression never took it apart sprayed it with 100shot dry it was a champ never broke sold the car and it is stikk running