Fidanza Flyweel Step Height not right, solutions?

[jawar666]

Hi All,

I have a Fidanza LightWeight Flyweel for a AWD 2G... I just bought a new SouthBend Pressure Plate and Kevlar Disc and I wanted to use the Fidanza flyweel with this clutch kit...

Problem is: The step height of the Fidanza I have is 0.5785" ... How I can fix this?

I was thinking about removing some material from below the friction surface (since this friction surface is replaceable)...

Any thoughts?

 

[99gst_racer]

If the Fidanza new or used? If new, I'd recommend returning it for another.

I can't remember off the top of my head- what is the factory step height?

 

[pneumo]

That's a big difference from the stock step height. It's supposed to be .610", so yours is off by over 1/4". That's close to the thickness of the replaceable friction surface. Are you sure you're measuring it right? Maybe the flywheel was resurfaced without the friction surface in place?

 

[99gst_racer]

That's a big difference from the stock step height. It's supposed to be .610", so yours is off by over 1/4".

Dave, your decimal point is in the wrong place.
It's .0315 difference.


So, it's off by about the thickness of a sheet of paper. Tough call. You could just mill down the friction surface a bit and that shouldn't have any negative impact on functionability, but then you'd have to do that everytime you replaced it. And I'm not sure how much work is involved in removing material from underneath the friction surface. Though if it's easily doable, that would probably be the best solution.

 

[pneumo]

Dave, your decimal point is in the wrong place.
It's .0315 difference.


So, it's off by about the thickness of a sheet of paper. Tough call. You could just mill down the friction surface a bit and that shouldn't have any negative impact on functionability, but then you'd have to do that everytime you replaced it. And I'm not sure how much work is involved in removing material from underneath the friction surface. Though if it's easily doable, that would probably be the best solution.

whoopise, you're right!
I'd remove material from the friction surface since they're not always flat. When I was running a Fidanza I always had a new friction surface milled and flattened. Maybe that's why it's slightly off- it could have been surfaced and the step height was adjusted.

 

[jawar666]

Actually I feel stupid!

The flyweel is brand new, but I took it to a "clutch specialists" shop to make them measure everything and verify everything is ok, and they told me the flyweel needed to be cut a little, so I said yes, and they cut the flyweel right in the top where the PP sits...

Now I'm at my mechanics shop and he is using his micrometer and it gives 0.5785 in average all across the flyweel...

So in one hand I don't want to spend another $300 for a new flyweel, and another hand I would like to kill someone at that 'clutch specialists' shop (me first, for being so stupid to let them do that)...