Is THIS normal?!?!
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From: Fort Worth, TX
This is not a home build, it was built by a reputable engine builder who was in the LT/LS scene a very long time. I'm not worried about any dis'ing, no problems there =D
As far as the setup, it is a resleeved LS2 case with Darton LS7 sleeves, 4.125 bore/4" Callies crank/6.125" compstar rods, Diamond 4.125" LS1 pistons (its LS1 because when this motor was built, it was the only 4.125" bore piston avaliable from Diamond, the LS7 pistons weren't out yet).
ARP head studs were for 2004+ LS2 block, which is what I've got. I thought it was interesting as well that they were short, but I also didn't believe it would really affect anything.
As far as the pistons go, I just measured the piston rock at TDC and it is 25thou, is that normal? I'm about to see how far out the hole they are, measurements to come soon.
As far as the setup, it is a resleeved LS2 case with Darton LS7 sleeves, 4.125 bore/4" Callies crank/6.125" compstar rods, Diamond 4.125" LS1 pistons (its LS1 because when this motor was built, it was the only 4.125" bore piston avaliable from Diamond, the LS7 pistons weren't out yet).
ARP head studs were for 2004+ LS2 block, which is what I've got. I thought it was interesting as well that they were short, but I also didn't believe it would really affect anything.
As far as the pistons go, I just measured the piston rock at TDC and it is 25thou, is that normal? I'm about to see how far out the hole they are, measurements to come soon.
Thread Starter
TECH Addict
iTrader: (24)
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From: Fort Worth, TX
So, after looking at it a little more carefully, I think it may actually be detonation, cause it just looks really funny the way the marks are. BUT, i'm posting up a picture of the head, and the piston respectively to see what you guys think. there is definitely missing material, but I'm not really sure, I've never seen any detonation damage.
What do you guys think? Remember it is only on ONE side of the motor, not both.
I measured the compression height (how far the pistons are out the hole), and it is between .008-.014, and I was running 51 thou gaskets, so I don't see how it could even be making contact, I still have more than 35 thou clearance.
Thanks again,
Adrian
What do you guys think? Remember it is only on ONE side of the motor, not both.
I measured the compression height (how far the pistons are out the hole), and it is between .008-.014, and I was running 51 thou gaskets, so I don't see how it could even be making contact, I still have more than 35 thou clearance.
Thanks again,
Adrian
