does anyone know what the compression is soposed to be on a v6?

 

I read 160 on mine.

Honestly, it's not the number you're looking for on a compression test... You want less than 10% variance among all 6 cylinders. All mine were 160psi +/- 5psi - nicely within spec.

Unless you mean compression ratio... 8.9:1 on the 2.8 mpfi.

 

i knew about the variance thing, but i did not know what they should be in general, i am planning to test that 86 before i buy. new engines should have good compression

 

a new engine should have 155+

If he's installed a longer duration cam, tho, well... the dynamic pressure at such low rpms will bleed off pressure quickly! There should be less than 1% variation, tho, with a brand new engine.

Besides, just look at the engine. If it's all gunked up, you know it's not new, right?

 

my stepdad (evil person) used to be a used car wholesaler.he used to pressure wash engines and spray them with laquer to make them look new. i have heard lots of tricks

 

Like you said earlier... what goes around, comes around...

 

boy does it, he is now in jail for mail and insurence fraude. belongs there too. hope i never see that pathetic waste of life again