[V8] what to do

Carol, Dave, and Zach Weiss cdzweiss at charter.net
Mon Mar 12 20:47:37 EDT 2007

BTDT.  I believed the guy who said, "the compression is fine", although the
dealer had run a leakdown and said I should find another engine.  Won't make
that mistake this time!
Dave wrote:
>> What I am afraid of is when I take the heads off, I am going to find worn
out cylinders - which I can not fix.



Leakdown is a good start.  I paid $200 for leakdown and compression, from a
shop that really knows what they're doing; I certainly don't have the
expertise to do it.  Leakdown tells you how much air you're losing, and
where some of it is going.  If it's going both to the IM and the crankcase
(like my "new" 4.2), it's hard to tell how much is going each place.  So I'm
going to break it down and take it to a good machinist for measurements.  He
says he can get rings, and they must be chrome w/ a specific profile.  If
somebody tries to sell you something else, beware.


Tony Hoffman wrote:

>As for what to do, that's also up to you. I'd probably recommend starting
with a leakdown test to see where you are loosing compression (if anywhere).
That can help you with the determination. If it's pretty good, just do the
head rebuild and you should be pleased with the results.




Embarking on a new chapter in the life of a V8.

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