I brought this up before on the transmission board but got no real solid opinions.


So umm.. I bought an SFI flywheel, and ignored the "must be used with our race disc". What happens is, the flange is thicker on the SFI flywheel, yet the total flywheel thickness is the same as OEM so the springs on a OE type (dual friction in this case) disc hit the bolts.

So, late at night, without really any other option I stuck the flywheel in the lathe and I turned down the mounting flange. I reduced it's size/thickness from .346" to .226"..

Then I cleaned up the tops of the bolt heads, so the combo clears. Put it together and tried it up and down the driveway.

It came back apart, and now it's sitting on my work bench.

Do you think .226" is enough thickness for the mounting hub on a manual trans flywheel, or would you throw it out ?

I did this like 2 years ago, and it's been sitting since. I'd hate to throw it out and waste $200, but at the same time I wonder if it's gonna crack/explode..

-- Joe

 

have it balanced,.....other than that bet it be fine

 

The balance checks out, I'm just curious if you all thought the flange was too thin now for beating on.

-- Joe

 

I bet it will be fine...one way to find out

 

It should be fine, but noone can really tell you for sure without seeing it. In reality if you want to be safe just spend the money on the correct parts

 

True, I can get another SFI unit and then get a special race disc with the smaller springs.

Or I could get an OE type flywheel and keep the new disc I have...

I just hate throwing out parts I paid money for

-- Joe

 

Most likely it'll be fine, but the SFI rating is useless. In the end ask yourself: How much are your feet worth?

 

I decided to just buy a new RAM 1501 sfi flywheel and a 6 puck ceramic clutch with the 8 small springs.

Guess I'll hang this other flywheel up on the wall.

-- Joe

 

Yup, risk vs reward.

General method for evaluating the value of risk:

1. Estimate the likelihood of a failure happening; mulitply that, times the severity of the failure outcome (loss of feet).

2. Determine the cost of a risk-free replacement.

Whichever cost is lower, is what you should go with.

I don't know about you, but I'm REALLY FOND of my feet... meaning the cost of #1 is REAL HIGH... so #2 would have to be pretty high for it to exceed #1.

 

Haha! I do have a blow-proof scattershield, but I see no reason to test it since SFI already has

Got bit by the 2210s not clearing a stock type 400 (staggered ) starter this weekend. Hopefully the new delco "mini" staggered starter will clear. Should have drilled the block out for the straight pattern before I assembled it. Oh well.

-- Joe