When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've got a machining scheme for the Dual Mass flywheel that I am having a local Machine Shop try. It involves 3/8-16 X 5/8 set screws (Lowes) used to lock the 2 halves of the dual mass together. I'm using the pressure plate holes and have the machinist using a small end mill in 2 of the 6 holes to create a pocket for the set screws spaced 180 degrees apart to clock the two halves. The 4 other set screws provide additional points of contact to allow the machinist to get both plates parallel. The set screws are tightened to apply tension between the 2 halves. He's to use the 6 pressure plate mounting tabs to index the two halves and will use a dial indicator to "zero out" the distance between the two plates. Then He'll chuck it up and cut the surface. He thinks my idea might work. If it does I'll post my sucess. His shop is very busy so I gave him a few weeks time to try my "science project".
A local shop had a jig he used and was able to machine my Dual mass the only problem I had is after 120K the cushions were worn out and it made a ton of noise.
There was a guy in Kansas City that used to do that. I was told they are machined on a taper, not just level across. Don't know if that is true or not.
I just picked up the flywheel from the machinist. He was able to get it to work using the set screws to stabilize the two surfaces and he used a dial indicator at the center and each of the 6 tabs to zero out the flywheel for machining. He did wind up with a 4 thousandths taper because of how the flywheel reacts when being machined. But all in all the flywheel looks great. The cost was $85 dollars. That plus the core and shipping which was $91 from a fellow forum member and I have alot less into the flywheel than a new one. I also won't get the gear noise like the Camaro or Aluminum 1 piece setups get when coupled to a ZF transmission.
For those near Corpus Christi who want to try to resurface a dual mass Corvette flywheel here is the contact data:
Harbor Engine & Grinding, Inc.
2845 Agnes Street
Corpus Christi Texas, 78405
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Originally Posted by SPD KILS
There was a guy in Kansas City that used to do that. I was told they are machined on a taper, not just level across. Don't know if that is true or not.