Re: THE GOOD THE BAD AND THE VERY UGLY
Quote:
Originally posted by 440EX4me
Well it is truely a J&E flat top piston in there and it was looking like it was in pretty good condition.
Interesting, I kinda thought the JE stuff would have a dome..
The really ugly part is that the piston is stiing down in the cyl .028-.035" and I need to know if this variance is good. It has worried me and I am going to check the cyl for any warpage etc. I only have a good set of calipers for measuring but I know that my measurements are not off by .007" maybe a couple thou but not that much.[/QUOTE]
powerslider had it correct- measure above the wrist pins.
Matts original "senior moment" about the stock gaskets was correct. When the last guy put it back together he used a stk 85mm head gasket, I am not sure how much trouble this could have caused as the dome inside the head looks about the same size anyhow. (should this be machined to match the sleeve??)[/QUOTE]
Oddly enough, when Patrick B was assembling his 440, he called GT Thunder twice about the stock gasket being in the cylinder- they said that's how they do it!:huh So is it a flattop or a dome? As long as nothing's been hitting, it probably didn't damage anything. Just use the correct 89mm gaskets when re-assembling.
The rings look and measure up fine and the cylinder was looking good except for a small section of scratches at the bottm of the cyl on the back (looks like a little bit of piston slap) I have not speced up the pin yet but there were no signs of wear or problems. This was a little suprising as the piston really looked good like it was only in use for a short time. Maybe I am just used to the auto stuff whre there wrecked.[/QUOTE]
Make certain that the cases aren't touching the sleeve. You may need to grind a bit to make certain there's clearance. When the steel sleeve expands, it can push on the aluminum cases, causing a hot spot at the bottom of the bore. Wala- additional wear or a broken piston (right, Patrick?).
My question is what do I do for a measurement to deck the cylinder. [/QUOTE]
You math in the other post looked good.