134cid compression check

[Ian Poland]

Can anyone tell me what each cyl should read for compression to be acceptable on a model 650 with a 134 cid gas engine?

 

[souNdguy]

I think 120# would be nice.. but i wouldn't strip her down for a rebuild under 90..

soundguy

 

[Ian Poland]

Thanks again soundguy, if I were to completely rebuild this engine what should I expect to pay? Thanks again!

 

[john_Bud]

I think ford's method is to run the engine at 1000 rpm and check compression then.

Spec is 220 psi for a new engine that way.


Cost? There is a lot of variability. You can get rebuild kits from china and have crazy larry machine it and only be out 500-750. Or you can buy an American made kit, have competent people check it and machine as needed. It also depends on what is found.

Crank needs grinding?
Rods straight with good bushings?
need (want) new rod bolts?
Oil pump good?
cam good
tappets?
Do you want it balanced?
Deck straght and true?
Hows the head?

and the list goes on !

If you do everything yourself and can change sleeves you can get by cheaply. If you have a good shop do it, you can spend a lot. I spent over $2200 for a 172 diesel. Needed a bit more than the usual and I went with the good stuff done right.

 

[souNdguy]

Depends on if you do the work, and have the tools to do so.. or if you farm it out.

While the rebuild kit is likely in the 500-700$ range.. i can see machining and outside valve work hit close to 1500-2000$ by the time you buy the kit and pay everybody.. also depends on the condition of your innards.. if the crank and cam are good or can be turned.. if head is good..e tc..

soundguy

 

[jimNCal]

$2,300.00 for my last one. All was done top notch tho and I didn't do any of the work.
jb