I'm just wondering if this sounds normal. Ls block, p30 pistons, stock b16 head. compression test yields 165 160 170 155. The numbers itself sounds low for the build. Motor still runs strong and does not burn any oil. Is there an explanation for this. Car was not warmed up when this was done.

 

you should warm it up first and have the throttle wide open when doing the compression test. my old lss vtec with pr3 pistons was 265 all across

 

Sounds like your right on target
http://autos.yahoo.com/maintai....html

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like your right on target
http://autos.yahoo.com/maintai....html</TD></TR></TABLE>

it should be a bit higher cause the pistons has a higher dome than the stock. i can see a stock ls block would read 160. i put together stock ls vtec and b20 vtec that reads 180psi

 

.

 

i was expecting it to be at the min. 220, all seein that its puttin compression out to over 11's.

 

bump

 

well my jdm single cam is putting down 210 in a cylinders is that good?