75 Spectra V-Drive

[78Southwind]

In 2012 when Greg owned the boat the dampener plate broke a spring which ended up cracking the transmission case. Greg had the transmission case welded up and painted. He decided to go with a flexplate with a TCI Front Pump Drive Kits (spline drive). However, the boat has never been ran with this new set-up. I have the old Centerforce steel flywheel and the old Spline Drive Unit for the transmission. I am considering going with the old set-up (flywheel) and just buying a Heavy-Duty Dampener Plate.

Does anyone have any suggestion why one set-up is better than the other? From research on other forums I have seen some that like the TCI Front Pump Drive Kits and some that don't. Here's a couple pictures of the different set-ups.

Flexplate with a TCI Front Pump Drive Kits









Centerforce steel flywheel and the old Spline Drive Unit

[Wheeler]

Looking good! Hope to see it on the water soon.

[WESTERNAERO]

In 2012 when Greg owned the boat the dampener plate broke a spring which ended up cracking the transmission case. Greg had the transmission case welded up and painted. He decided to go with a flexplate with a TCI Front Pump Drive Kits (spline drive). However, the boat has never been ran with this new set-up. I have the old Centerforce steel flywheel and the old Spline Drive Unit for the transmission. I am considering going with the old set-up (flywheel) and just buying a Heavy-Duty Dampener Plate.

Does anyone have any suggestion why one set-up is better than the other? From research on other forums I have seen some that like the TCI Front Pump Drive Kits and some that don't. Here's a couple pictures of the different set-ups.

Flexplate with a TCI Front Pump Drive Kits



Centerforce steel flywheel and the old Spline Drive Unit

You should get a hold of Bob/GN7 about this. There was a discussion about this somewhere before also, maybe on PB. Try a search over there. I'm assuming you're trying to find out so you can get the engine re-balanced.

[78Southwind]

Yes, that was the thread I was referring to. GN7, Rexone and a couple others had some good info. I just thought some others like yourself may have some thoughts...

[78Southwind]

I sent an e-mail over to the Pro Race Tech in Australia and also talked to their Senior Consultant here in the US about the Harmonic Balancer and they are offering to send me a new one for $150 out the door. That should save me at least $200 in the cost of a new supercharger rated balancer.

From Ren @ Pro Race

Thanks for your email; based on the information you provided, this #74267 balancer was built 13 years ago, in 2000.

The rubber that appeared at the back of the balancer would be a result of ‘tear and wear’ after a long term operation under a harsh condition (such as a high-horsepower marine application like yours, as Ed Lyons our senior consultant had mentioned to you). However we are happy to offer you a replacement Pro/Race #74267 at a heavily discounted purchase price of $150 (more than 50% off).

[GotHalos]

Very cool of them to offer that heavy of a discount

[78Southwind]

Last week a couple parts showed up at my house. My flexplate and balancer.

Meziere Flexplate Steel Flexplate that is one piece billet.



Pro Race Steel Blower Balancer machined for two keyways

[78Southwind]

Here's a couple pictures of the block it's a Merlin II CNC Block with a 4.5" bore and 4.5" stroke to make it a 572. There has also been some work done to the block. The deck height is 10.188, the block has been O-ringed and bronze lifter bore sleeves have been installed.