Engine Machining

[Kohnke Rebabbitting]

Originally Posted by Synchro909

There has very recently been a thread on another Ford forum about the engine pictured in an earlier post. Seems the issue is they use the middle main bearing for the thrust, something that will always end in failure, yet they won't learn according to the responses. I was at the repair tent at the National MAFCA meet in Reno a year or so ago and a chap there had an engine done by them. It had stripped the second timing gear in about 400 miles. A new one was fitted in the hope that he could get at least nearly home again to (I think) So Cal.
IMO, fitting hardened seats in a Model A engine should ONLY be done as a last resort. I've never done it and can't see that I ever will.
The OP is doing the right thing seeking advice before parting with his hard earned.

If a hard seat comes out, it's the machinist fault, not the seats.

We are shooting a 100%, in 55 years.

Herm.