Overhaul kit for Oliver 70?

Gambles

Well-known Member
So who has the pistons and sleeve kits for an Oliver 70? Years ago, Clevite had some numbers in their catalog, but they were bought out by another company.
I will also need bearings and gaskets. What company would still make all this and who sells it? TIA.
 
Those kits from Clevite have been gone for years. Several years ago I did a story for the HPOCA magazine on how to make up a kit. You bore your old sleeves to 3.250 and if you take it apart and find you already have that over bore size you can go oversize. Bearings may be the easy part to get since they are the same as the still popular F series Continental engines, however they were discontinued in the standard size years ago. Fel-Pro did have gaskets. More questions to start with. I think Rudy had some sleeve made don't know if he still has them or not. Clevite and the Perfect Circle aftermarket line became part of Mahle. J.
 
Can not answer your question fully, but was at a show about 3 years ago where they had an Oliver 70 running a small thresher. Got to talking to the owner of the tractor and they had went through Maibach in Creston OH to source parts to totally rebuild the motor. Seems like he said lots of stuff was unavailable through AGCO/Oliver and the usual run of the mill aftermarket sources. He said Maibach was able to find everything through creative ways though. (e.g. I believe he said the pistons that he used were actually from a slant 6 Chrysler motor).

That is about all I remember, but I certainly would be contacting Maibach.
 
A guy I've done work for bought one of those kits. Not cheapest. The highest priced pieces being the sleeve kit and i forget which valve.

I don't know about the sleeves but the box with the piston said Chrysler with a part number but not what it fit. They were 3.25. The thrust bearing in this kit was two of those brass washers. On the rear you drill your own holes and put the pins in. It might be best to drill fairly deep. I had to file those pins to somewhere around 0.050 to 0.060. No thicker than that or the crank won't slide in. If someone else ever tears it down they will have fun getting it back out.

The thing I liked least was putting a rope seal in groove that came out with cork. So much drag the 6 volt starter could spin it with the plugs out but had to pull start it the first time. It has settled down fairly quickly and isn't leaking. It starts cold but not hot so far with not very much time on it.

Almost forgot. They sent the thin wrist pin bushings but we had to find some a little thinner to go into those rods. Late 47 if it matters.

RT (my two cents. it's a little long)
 

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