Quote:
Originally Posted by Chrisyphus
Toss a magnet in that thing and let’s put the theory crafting to rest lol.
You don’t necessarily need a flanged sleeve, and an flangeless sleeve is going to be cheaper. It’s just going to have worse thermal expansion characteristics.
The difference in color is VERY out of character for any S65 I’ve ever seen.
If that’s the case, as mentioned above, and a ring set designed for alusil was used, there’s your failure mode. Good to know.
Re:sleeved vs. reconditioned- hard disagree that sleeving is the only option. We have multiple 700whp+ supercharged S62s running without sleeves, and they’ve all lived long happy lives. They have the same bore spacing as the S65 and they’re 94mm cylinders BEFORE we bore and recondition them (.008” IIRC). It’s a non-issue unless you’re trying to get into horsepower numbers far above the average SC S65.
It is, however, the only safe option if you choose to work with a shop that doesn’t specialize in AluSil reconditioning.
Now, having covered all of that, if you want an economical solution to getting this car back on the road that takes all of the guesswork out of the equation, we offer a short block package for $10,000. It’s a fully forged rotating assembly including our custom manufactured forged and fully machined rods, MAHLE power pack pistons in either 12.3:1 or 10.2:1 compression ratio. Fully machined, blueprinted, and built in-house by us. This short block, properly maintained (good oil change interval and standard warm-up considerations), should outlive your original motor. MAHLE’s 4032 pistons are as long lived as the OEM pistons, and with our improved bearing clearances all around, the full packages is better than OE, not just in performance, but also in reliability.
We’re also working with MAHLE to have them produce custom pistons for us in the same alloy that the S58’s OEM pistons are made from. Not an inexpensive endeavor, but worthwhile as M142 offers nearly the same strength as 2618, while having a CTE more similar to a cast piston than even 4032. But that’s going to take some time to come to fruition.
My final point…. Brother you’re in Raleigh. When I first started working at Partee Racing, I moved to Chapel Hill and commuted up to Danville every day.. drop by and check us out some time if you’re at all interested. We are open to the public and have dozens of people come by every month who will almost certainly never be customers, but we still show them around all the same, because that’s not the point.. hanging out with other enthusiasts is.
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Thanks for the info, what's the name of your shop? May have to swing by sometime. Currently don't have the budget to buy a fully built short block, have any good blocks you're willing to sell? Also would you like to buy mine as a core to rebuild? Gonna make a table out of it or something otherwise lol