HotPursuit

You still have to run a gap with total seals its just a two piece ring.The lower the block pressure the less power it takes to turn the rotating assembly.Thats why you make more power with a dry sump set up allmost negitive pressure.Robs problem seems to be high leakage on one engine.
Also if your running to much piston to cylinder wall clearance your rings wont last as long.

Young Performance

Yeah........REALLY!!!

Rob, what do you call loose as far as piston to cylinder clearance? Why do you have to replace the blocks? What is the bore now? If they are Gen VI blocks, they can go to 4.600. All and all, even at 15% on an sc engine with over 100 hours, that's not bad.

32agitator

i agree that dry sump makes alot more power cause of less windage i run procam oil pans on my boats they are made my baker in michigan best oil pan for wet sump setup

thunderusone

I got a piar of 598's that will leak less than 5% right now. 14 holes will go less than 3%. They have not been fired in a month. So will Joe Murray's 598's.

Strip Poker 388

iTrader: (6)

I figured 15% was soso,Also meaning nothing is hurt. Gen 6 2001,The pistons call for 6.5, most are around 8 one is 10 and 11.theres alittle scuffing on the pistons,its been like that for the last 2 ring jobs, one is 30 and one is 60, I was thinking taking the 60 over to 70, but they say they don't make rings for them. I really didn't want to go past 70 over.I'm scared of it being thin.I see they make a ring for a 4.560.I wonder if thats a off the shelf piston?

Rob

RunninHotRacing163.1

]I got a piar of 598's that will leak less than 5% right now:
thats dayum G@@d #s BIG Daddy ,must be them big hp motors cause down here fresh off the dyno there seeing 8 to 10 %

maybe we should use these Speed Pro plasma for a game of ring toss

32agitator

i will post a pic soon

Uncle Dave

You can Also try C&A rings.

I have 2 builds on Childs and Albert rings they have a zero gap setup very similar to speed pro.

Looks like they have your size as well.

Yeah 15% is the early end of getting tired.
Not bad, but not new. Another season it will probably be time.

"Uncle Dave"

Laveycraft 2750 Ilmor 710
Laveycraft 20.8 Sebring 406 SB

Young Performance

It's not Speed Pro rings, they are Total Seal Gapless TS1.

Young Performance

Rob,
The 4.560 is a shelf piston. You should not have any problems going that big. Like I said, I regularly take Gen VI blocks to 4.600. I have taken a few to 4.625, but they do get a little thin. Have the block sonic checked and be sure to leave at least .200-.250 wall thickness. It all depends on how much core shift the block has as to how thick it will be. You will have one side of the cylinder wall that is thicker than the other side because of the shift. The other deciding factor is salt water corrosion from the back side. Salt water will eat the back side of the cylinders and make them thinner. So in theory, a fresh water block will have thicker cylinder walls than a salt water block.
Eddie