T5 Flywheels

[Jordan]

Getting very close to having these be ready for CNC production.


Working on sensor mount and testing this week.

[Crazyswede]

awesome

[SwedeSport]

I need one of those for my 85T when they are ready.

[Jordan]

gather your cores....

[DrewP]

The benefits of this being:

1) Doesn't interfere with A/C on a C900

2) May fix firewall clearance / access issues on a 16-valved' 99

3) Easier to get to CPS

4) Don't have to remove CPS bracket to change belts (depending on who's CPS mount design you're using)


????

[Jordan]

-- Closer tolerance to trigger angle. Larger diameter and machined from TDC hole on flywheel instead of A/C pulley mounts which have shown to need some variations.

-- No additional trigger wheels to buy

-- Lightens flywheel (can lighten further without much additional cost)

-- Multiple pressure plate/clutch disc options

[Geoff]

How do these affect dynamic engine balance?

[Jordan]

There is a machined balancing slot on the front to offset the missing "teeth".

[squaab99t]

The benefits of this being:

1) Doesn't interfere with A/C on a C900

2) May fix firewall clearance / access issues on a 16-valved' 99

3) Easier to get to CPS

4) Don't have to remove CPS bracket to change belts (depending on who's CPS mount design you're using)


????

All good stuff. There is always more than one way to skin a cat.
1) Not quite as plug and play, but removing a 900c flywheel is not too tough.
2) The folks at Scanwest did this on their 900c rally car a few years back and it worked until the VR sensor got heat soaked and failed to produce a signal. In order to finish the weekend Rob rigged up a the washer bottle squirter to intermittently spritz the cps during the stage.Not saying you all will see the heat that a rally car would see, but something to be aware of.
3) You won't get hosed if someone put an EZK harmonic balance pulley on your turbo engine. The woodruff key relative to the a/c fastener locations are different.
4) Higher shipping cost due to the weight/size.

[RadioFlyer]

How much for one of these beasts?

[swmeatball]

Dumb question, what's the tooth count? I'd like to hook mine up to a megasquirt, seems likely it could be made to work, I know 36-1 is commonly used.

[DrewP]

It's a 60-2, common for GM engines, and should be compatible with MS.

[Geoff]

There is a machined balancing slot on the front to offset the missing "teeth". They will also be put on a balancing machine and see if more or less has to be done to them.

Typically flywheels aren't necessarily balanced individually, they're balanced with the rest of the rotating components of the engine. Weight is taken out of the flywheel by drilling spots out to balance the engine as a whole.

Not saying I'm not interested but if you're balancing a flywheel you may be changing the balance of the engine. However, SAAB typically did a pretty good job balancing their engines with little need for adjustment.

[Luke]

Geoff, the expection to that is on a 4 cyl the crank is normally balanced by itself. If you need to balance the flywheel its done after the crank has been done, same with the hamonic balancers. But the shop I use dosen't have a specific "flywheel balancer", that's why they balance them on a crank that has already been balanced.

[Jordan]

If all parts are zero balanced, you should be balanced. You don't get your whole assembly rebalanced when you change your clutch do you?

All good stuff. There is always more than one way to skin a cat.
1) Not quite as plug and play, but removing a 900c flywheel is not too tough.
2) The folks at Scanwest did this on their 900c rally car a few years back and it worked until the VR sensor got heat soaked and failed to produce a signal. In order to finish the weekend Rob rigged up a the washer bottle squirter to intermittently spritz the cps during the stage.Not saying you all will see the heat that a rally car would see, but something to be aware of.
3) You won't get hosed if someone put an EZK harmonic balance pulley on your turbo engine. The woodruff key relative to the a/c fastener locations are different.
4) Higher shipping cost due to the weight/size.

I'm not sure why the sensor would get overheated being on the opposite side of the exhaust and high heat generating areas. In any case we have run this set up at full bore for hours on end in the Lemons car with never an issue.

Someone told me they started selling the EZK balancers under the Turbo part number for a while as they could (most of the time) serve the same purpose.

Luke found out that the flywheels fit nicely (at least 2) in a flat rate USPS box!

I have to see how much work the adapter and final finishing is going to be before pricing. They should be pretty competitive with the squabb kit including the fact that you get a nicely refinished flywheel in the process. Then you just get to choose your T5 flavor :)

The pattern is 60-2 as Drew Said. Many car manufacturers use this same method/pattern as standard.