compression test

[johnnyfamous001]

yesturday i did a compression test on both of my 2005 300ex and they both came out at 180psi both have stock motors...

[Cody_300ex]

Ok? Thats sound kinda low tho, I think i got around 235 or somthing on my 11:1 piston and shaved head/jug.

[bwamos]

Well with a little inaccurate reverse engineering..

11:1 w/ shaved head @ 235psi
would make
8.9:1 ~ 185psi

so he's most likley doing good.

what your really looking for is leakdown.