Re: Almost back in business

This is basically the same engine and situation as it was before the engine was rebuilt. Keep in mind that the engine only had 2000 to 3000 miles on it from the previous rebuild when I had the detonation problem. The only thing that has changed is the 160* stat plus the fresh rebuild. The rebuild only included new pistons and rings + cam bearings. No new lower end bearings or cam, lifters, etc. as the motor had very little time on it. I had mild overheating problems previously usually on hot days. This was with a 180* stat. My engine builder suggested using the 160* stat to help control the detonation problem. We have a lot of things working against us what with crappy gas etc. It was also explained to me that the design of our big block heads contributes to the problem. It has to do with the placement of the spark plugs. The latest Edelbrock aluminum heads have taken this into account by raising the spark plug position.

Will be looking into it today and will keep you posted.

Paul L.

On Thursday, December 11, 2014 9:05:38 PM UTC-6, Paul L. http://1962to1965mopar.ornocar.org/ml-lennemann63.html wrote:

I spent the last two days dropping my 440 back into the Sport Fury. It has been sitting for the last 14 months due to a detonation problem and a broken piston. The long time lapse was due to a machinist who had it for more than eight months without doing any work on it. So I finally just went and picked it up. Rich K. and Dodger recommended a machinist who is a Mopar guy, but he is also busy.
The top land broke off of one piston and upon inspection discovered that, that had produced a big dent in the cylinder wall, which could result in a crack. So it was recommended to sleeve that cylinder, which then means the others have to be bored. As it was explained to me the cylinders adjacent to the sleeved one get distorted in the process so they need to be bored to bring them back to round so all the others need to be bored as well.
But at last it is ready. As luck would have it the weather is cooperating and it hasn't been too cold in my unheated garage. So if everything goes to plan I should be able to fire it up tomorrow. And the weatherman is forecasting temps in the 50's for the next couple days so I might even be able to go for a bit of a cruise. Wish me luck.

Paul L.