Re: Harden Seats or Not??
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Re: Harden Seats or Not??



Hi John,  Good Question.

The engine had a spun #6 Rod bearing, so for certain the crank will be turned on the rods. Mains looked good. Cam had a line in the front journal, so will replace cam.

the #5 and #6 Cylindars have very slight groove in them. I'm going to see if the machinist can hone them out and still be within spec to keep the original pistons. If I have to bore it, at that point, its a matter of what 10.5:1 pistons that I can find for the 273. I know Egge makes a .030 over. But havent seen any .010's, which is ALL it would need to be bored if it needed it. Flatlander will custom make the piston's for me, but I have a feeling those will be more than the Egge's

The Dart has < 90K and is a survivor Engine < 80K survivor. The engine has been open once before, as the pistons have numbers awl'd into the back of them. Bearings are original size, but Clevite 77's. Cam was a Melling, so it wasnt original. When the engine started to holler and slight knock, I took it out, so as not to damage much.

So, if possible, Keep original pistons, of course original heads, original rods, etc. Replace Bearings and Rings and cam/Lifters and chain/gears/pump. Will go with Clevite Bearings, Moly Rings, and racer Brown Cam. (ST-1 or ST-2) . I havent measured the push-rods yet, not sure if I will replace them or not. They're solid, un-bent, just need to check for wear is all.

By all means of the term, to me, Refresh is Rings & Bearings, & Timing Gear, minimal head work like guides. Rebuild is where you get to the pistons, major head work, Sleeves and the like.

--Tom

John wrote:

Tom, Here's a question to your question. What do you mean when you say REFRESH?  Are you rebuilding, with cylinder bore. journals freshened and all that stuff. My motor (361) has 99 thousand and the car is still a survivor. I want to do something to it, rebuild,or refresh, so what does your refresh mean?  John  Wask....
To: 1962to1965mopars@xxxxxxxxxx
From: tomwatters@xxxxxxxxxxx
Subject: Harden Seats or Not??
Date: Tue, 12 Jan 2010 13:19:23 -0700

If the seats on my '65 Heads still dont leak, and I have the engine apart for a refresh, should I replace with hardened seats? Figure the car's had a fair number of miles on it with modern unleaded and I havent seen an issue.

What are your thoughts?
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