Hi JP,

Those numbers sound just fine to me. "Great "would be about 15-20 psi
higher, but then again 15-20psi lower is considered pretty bad news.

I would suggest a compression test annually, unless something is
going wrong.

Happy Trails,

Greg Potts
1973/74/77/79 Westfakia "Bob The Tomato
www.pottsfamily.ca
www.busesofthecorn.com

On 30-Apr-07, at 11:47 PM, Burdett, Jean-Pierre wrote:

> Hi Guys,
>
> I just did a compression check this weekend and it seems almost too
> good
> to to be true - 110 lbs in the 2  forward  barrels and 115 in the rear
> 2.
>
> The engine has not been torn down recently -  I think it has about max
> 50,000 kms  (30,000miles) on professionally rebuilt engine done in
> 1996
> including new cylinder heads.   (  I can't tell exactly how much
> mileage... from my records the odometer was broken for 3 years)
>
> 1.      got engine up to operating temp
> 2.      removed all plugs
> 3.      put in the compression tester
> 4.      let the engine turn over about 4-6 times
> 5.      repeated on all cylinders
>
> All 4 of my month old plugs have consistently grey white tips but the
> ceramic around is black.
>
> So my question is....did   I  skip a step that skewed the results
> or do
> I just have a strong engine? What do you guys think and how often
> should
> I do compression checks to verify the state of the engine?