hey all , i did alot of looking around for the cylinder compression for the jdm d15b motor and couldnt find a solid answer, lots of people got various results i seen as high as 200 across, i got 150 across accept cylinder 1 was 143 i havent done a wet test yet but i will soon as my alternator needs to be replaced, but im just curious if anyone knows what the d15b cylinder compression is supposed to be? its a 3 stage vtec i believe , as it has two solenoids next to the fuel rail any helps is much appreciated thanks.

 

Super healthy psi all around (within 5% of each other) is 220-260 Psi
minimum healthy Psi all around (within 5%) 180-220

Bare minimum of psi to be considered ok (within 5%) 160-180 Psi

Going out compression i believe ~140 Psi

this is all my opinion and speculation

U say 150 Psi all around, that is on the low side for my taste, but im sure if u keep it as a daily (dont bang on RPM) it should last decently.

i consider my single bangers healthyness @ 180-240 Psi.