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SVT Shelby GT500
2011 GT500 Engine Question
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<blockquote data-quote="RedVenom48" data-source="post: 16299197" data-attributes="member: 166576"><p>Youre right on the edge. A little too close the the edge to be considered safe TBH. Absolutely correct, the rods are the weak link. The Mahle Forged Pistons are pretty stout as shipped from the factory.</p><p></p><p>Problem with the JDM/Mahle Cobra Jet piston set is that they are .001" over factory bore. They WILL require the block to be diamond honed .001". Problem is that the PTWA liners may or may not have that .001" for all 8 cylinders. Some blocks can get honed, some cant. Some blocks have 7 out of 8 cylinders pass, but 1 goes through to the aluminum.</p><p></p><p>The spray bore PTWA liner is very robust, and the 11-12 block is regarded as one of the strongest blocks available. But, if your hone attempt fails, your block is going to require sleeves and the machine work that goes with it. Make no mistake, the JDM Cobra Jet spec Mahle pistons are absolutely STOUT. But you need to be prepared for sleeves should honing fail.</p><p></p><p>In the same boat as you. I was going for an all out build, but real life events have popped up and cant do pistons or sleeves. Will be installing my already purchased Oliver rods; getting the rotating assembly balanced and popping the pistons and rings back in to their respective cylinders. I may upgrade to Trend Performance H-13 tool steel wrist pins for peace of mind.</p></blockquote><p></p>
[QUOTE="RedVenom48, post: 16299197, member: 166576"] Youre right on the edge. A little too close the the edge to be considered safe TBH. Absolutely correct, the rods are the weak link. The Mahle Forged Pistons are pretty stout as shipped from the factory. Problem with the JDM/Mahle Cobra Jet piston set is that they are .001" over factory bore. They WILL require the block to be diamond honed .001". Problem is that the PTWA liners may or may not have that .001" for all 8 cylinders. Some blocks can get honed, some cant. Some blocks have 7 out of 8 cylinders pass, but 1 goes through to the aluminum. The spray bore PTWA liner is very robust, and the 11-12 block is regarded as one of the strongest blocks available. But, if your hone attempt fails, your block is going to require sleeves and the machine work that goes with it. Make no mistake, the JDM Cobra Jet spec Mahle pistons are absolutely STOUT. But you need to be prepared for sleeves should honing fail. In the same boat as you. I was going for an all out build, but real life events have popped up and cant do pistons or sleeves. Will be installing my already purchased Oliver rods; getting the rotating assembly balanced and popping the pistons and rings back in to their respective cylinders. I may upgrade to Trend Performance H-13 tool steel wrist pins for peace of mind. [/QUOTE]
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