Looking for new pistons
Thread Starter
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Joined: Dec 2018
Posts: 68
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From: Chattanooga, TN
Looking for new pistons
I have a 2017 Grandsport that’s been supercharged. I now have 4 cracked pistons and am looking for replacements. I had some Diamond pistons on order from Brian Tooley Racing, but now the pins are back ordered for 3 months. Any ideas on where to go now? I don’t order stuff like this all the time, so I’m hoping for some good direction from you guys that do this more often. Thanks.
Race Director
Joined: Apr 2000
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From: Texas
I have a 2017 Grandsport that’s been supercharged. I now have 4 cracked pistons and am looking for replacements. I had some Diamond pistons on order from Brian Tooley Racing, but now the pins are back ordered for 3 months. Any ideas on where to go now? I don’t order stuff like this all the time, so I’m hoping for some good direction from you guys that do this more often. Thanks.
If you're looking specifically for Diamond, I'd call them directly as well.
Thread Starter
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Joined: Dec 2018
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From: Chattanooga, TN
If you're looking for pistons in general, I'd call a couple of the manufacturers....Ross, Wiseco, Mahle, and others....and see what they say. You'll get the straight scoop on where to buy and availability.
If you're looking specifically for Diamond, I'd call them directly as well.
If you're looking specifically for Diamond, I'd call them directly as well.
Thread Starter
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Joined: Dec 2018
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From: Chattanooga, TN
Instructor
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From: Over the mountain and through the woods
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Le Mans Master
Joined: Jun 2008
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From: Rockledge FL
I'm just curious to what led to the cracked pistons. Too much boost? We read everywhere hp limits and boost limits when followed are safe for the lt1 ring gap so I'm just curious if yours was an exception or were you pushing more than standard?
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Joined: Dec 2018
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From: Chattanooga, TN
I don't think it was too much boost. 5 psi. 700 rwhp. But it was the ring gap issue that caused this. So draw from that what you can. I hope that helps.
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Joined: Dec 2018
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From: Chattanooga, TN
There are many opinions on where the line is for stock internals. My opinion is that the stock internals would have been fine in my car if the rings had been gapped properly. I wasn’t the one who supercharged the car and I didn’t know about the ring issue until I had the problem. That’s on me.
Dig
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From: Port Saint Lucie FLORIDA & HONDURAS
Thread Starter
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Joined: Dec 2018
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From: Chattanooga, TN
I went with the Vengence set. I’ve found it’s very hard to find just drop in pistons and only slightly easier to find drop in piston/rod sets. The vengeance pistons are made by mahle. The rods are someone else and I can’t remember it right now. Waiting on the mechanic shop now.
Racer
Joined: Jul 2015
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I guess I'm one of the many. 2014 Z51, at 60k Procharged with a P1 590 hp. At 108k cam, e85, D1X and LT4 fueling, 730 hp. Odometer about to hit 130 now. Daily driven and runs great.
Instructor
Joined: Dec 2021
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I have a 2017 Grandsport that’s been supercharged. I now have 4 cracked pistons and am looking for replacements. I had some Diamond pistons on order from Brian Tooley Racing, but now the pins are back ordered for 3 months. Any ideas on where to go now? I don’t order stuff like this all the time, so I’m hoping for some good direction from you guys that do this more often. Thanks.
Please advise, thank you!
Le Mans Master
Joined: Oct 2014
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From: Atlanta GA
Oh my gosh, cracked pistons?! WHat supercharger ? what other mods? how much boost? I ask because I installed a Edelbrock supercharger on my C7 GS M7 Canned tune 91 octane. Ive been paranoid about to blow my motor. it dynos at 500rwhp/500 torque. Please advise, thank you!
Ring gaps are tight , if u run high boost you can pop a ring land ...
Dave