Compression test time..

[GNANIMO]

Hey folks,

I am bringing in a GN that I am interested in buying to get a compression test done and a leakdown test if I have enough time. The shop wants 120 for the compression and 80 for the leakdown test @ $80/hr (can)

Seems a little high to me, what do you figure?

 

[dboosted1]

you can buy the gauges and perform the tests yourself for less than a $100..........forever.

 

[GNANIMO]

ok I called around a little bit and found a shop that will only charge $30!! The other place is obviously a rip off. I read that the compression should read around 150 psi. in each cylinder give or take 10 psi. Is this correct?

 

[GNANIMO]

Also is there anything difficult about running the test? Meaning are there any parts that make running the c/t on a specific cylinder difficult or is there anything that needs to be removed?

 

[topfuel]

compression test

Nothing especially hard about doing a compression test on a TR,
only the spark plugs have to come out to do the testing,
nothing else is in the way.
Also look for variance between cylinders, no more than 10%
I believe.