Engine Rebuild Kits

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Mar 13, 2024 | 01:10 PM

#16

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

Posts: 27,288

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From: NM

Quote:

Originally Posted by bmoran4

Kirk, it seems you are advocating for moly piston rings and the matching pistons. ....

I believe he's referring to 3-ring pistons with narrower rings, vs the stock 4-ring setup. There are guys on the Ford Barn who have tested the 2 side-by-side and there is some noticeable difference, and it's "free" HP. But you have to have very good cylinder finish, not a backyard hone job.
Kirk, I would say most flat V8 engine rebuilds go right to +.060". 0.125" is for chasing HP or on engines that have sat in water and have deep pits. There is a real risk of overheating with that bore.

Mar 13, 2024 | 02:04 PM

#17

bmoran4

Parts Nerd Extraordinaire

Joined: Sep 2010

Posts: 4,347

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From: Western NY

The reason I suggested moly rings is because Krik was stating that it .125 is the only size you could start getting them at, and that aligned with what I could find for supply of moly rings, but I'm sure a deeper search could find all sorts of expensive options. If Kirk is simply suggesting 3 ring setup, they are available in the smaller bore ranges as well from companies like Ross. No need to jump to .125 simply to get 3 ring pistons.