Duramax Diesels Forum Truck of the Week
  #121  
Old 11-26-2011, 06:28 PM
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Chevy1925 Chevy1925 is offline
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I just find it odd that none of the others were no where near as bad as cyl 5. Everyone that i see usually has multiple that arw decently bent
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
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  #122  
Old 11-26-2011, 06:38 PM
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Holy sheet
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  #123  
Old 11-26-2011, 06:58 PM
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scary shit there buddy, at least your on the road to redemption.
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  #124  
Old 11-26-2011, 07:01 PM
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Originally Posted by SSchmi5519 View Post
Holy sheet
Yeah, still think its a stuck injector? Lmao





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Originally Posted by Jscherbs View Post
scary shit there buddy, at least your on the road to redemption.
Yes sir justin! Problem is, after what i just put down for new furniture and the garage remodel, i have to wait on the machine shop. Not lookin like ill get it back runnin till the end of january :sad:
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Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #125  
Old 11-26-2011, 07:15 PM
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Yeah, still think its a stuck injector? Lmao
Looking like no. Lol.

Have you decided on a machine shop?
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  #126  
Old 11-26-2011, 08:56 PM
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Looking like no. Lol.

Have you decided on a machine shop?
Hell no! Lol
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Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #127  
Old 11-26-2011, 09:15 PM
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So im sittin on the fence now. I meed atleast one piston but i like to over build shit (desert racing trait that just wont leave me). I want the motor to last for 100k but we all know want and will usually dont go hand in hand. So im trying to figure out if i should go with aries pistons or regular cut amd coat stockers. Obviously anything can happen but as a whole, are aries looked at more for the hp range above mine? Id do the aries but i dont want to change my rings every year based on how much i drive. Is this way over kill? Those steel pistons wont happen as i dont have the coin for them though id do them in a heart beat if i could.
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Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #128  
Old 11-27-2011, 01:00 AM
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Mahle performance pistons?

Coating or no coating? Ive seen cast Mahle's that are cracked, and also seen coated cast Mahle's that were cracked. Im not really sure that it helps as much as we think.
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  #129  
Old 11-27-2011, 06:04 AM
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I AGREE! It's still a cast piston. They will only hold so much before there done. If you truely want 100k then you probably need to take your chances with them. I think the Arias will go 25k between rings and be good. If it's mostly hwy miles I don't see that as a problem with them. Jeff
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  #130  
Old 11-27-2011, 11:03 AM
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Quote:
Originally Posted by hondarider552 View Post
Mahle performance pistons?

Coating or no coating? Ive seen cast Mahle's that are cracked, and also seen coated cast Mahle's that were cracked. Im not really sure that it helps as much as we think.
True. What was the "idea" behind coating the piston? Were any test
done to see if it helped or was it just recommened?




Quote:
Originally Posted by Stingpuller View Post
I AGREE! It's still a cast piston. They will only hold so much before there done. If you truely want 100k then you probably need to take your chances with them. I think the Arias will go 25k between rings and be good. If it's mostly hwy miles I don't see that as a problem with them. Jeff
I think your right jeff. Ill just have to keep the power down till i feel i can pay to play this game more or something affordable comes out as a replacement. This goin almost a year without a truck is not fun
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Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #131  
Old 11-27-2011, 11:20 AM
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Quote:
Originally Posted by Chevy1925 View Post
So im sittin on the fence now. I meed atleast one piston but i like to over build shit (desert racing trait that just wont leave me). I want the motor to last for 100k but we all know want and will usually dont go hand in hand. So im trying to figure out if i should go with aries pistons or regular cut amd coat stockers. Obviously anything can happen but as a whole, are aries looked at more for the hp range above mine? Id do the aries but i dont want to change my rings every year based on how much i drive. Is this way over kill? Those steel pistons wont happen as i dont have the coin for them though id do them in a heart beat if i could.
I like a fresh set of cut, uncoated, LB7 or LLY pistons.
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  #132  
Old 11-27-2011, 11:34 AM
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Quote:
Originally Posted by SSchmi5519 View Post
I like a fresh set of cut, uncoated, LB7 or LLY pistons.
That brings up the next question. What is differnet in a set of used pistons (from the same motor going back in the same motor) vs a set of new pistons? Has the metalology changed over use? Do hairline cracks occur?
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Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #133  
Old 11-27-2011, 11:38 AM
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James, if it was me, id rather have my truck down a few more months and have a fresh set of pistons in it. at 160k, your pistons have had abuse, and I dont think we need to be pulling the engine next year from a possibility of a failed piston. JMO.
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  #134  
Old 11-27-2011, 11:42 AM
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Quote:
Originally Posted by Chevy1925 View Post
That brings up the next question. What is differnet in a set of used pistons (from the same motor going back in the same motor) vs a set of new pistons? Has the metalology changed over use? Do hairline cracks occur?
IMHO who the f**k knows LOL... Guys are cracking brand new cut and coated cast pistons at fairly low HP numbers then Dmitri is a great example, he has taken used pistons with 100,000+ miles on them cut them and not used coating and has made well over 1000hp with DDing a lot. I would not be worried about running used pistons
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  #135  
Old 11-27-2011, 11:44 AM
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Also I would try to stay away from valve reliefs if I could. I saw an entire set of stock cut pistons with reliefs cracked. One completely failed and split right down the middle. The other seven had small cracks starting in the valve relief where it meets the bowl. I know if your changing the cam you going to need reliefs. This engine saw lots of drag strip abuse at 850 RWHP and then a handfull of passes with nitrous finished it off. The owner knew it was coming.
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