[Tigers] Aluminum Flywheel question

[Sandy Ganz]

Dan, I think one of my aluminum flywheels McLeod has the steel insert held by rivets, another (Fidanza) uses AN Countersunk Philips Head with a jet nut (locking, AN). I don't know if it would be bad to do it direct to the aluminum, I think just better to get the right size nuts and bolts. You can find an odd variety of these at Aircraft spruce, and other race shops, even Mcmaster carr has a selection of mil spec bolts/screws. Or why not just ground/cut down the offending long bolts a dremel will make short work of it? Also you likely could get replacment ones from fidanza if similar style.

One other interesting thing is that the pressure plates on all of the flywheels thread into the aluminum, so it might be fine, just some food for thought.

Sandy 


----- Original Message ----
From: Dan Eiland <deiland1 at elp.rr.com>
To: Tiger List <tigers at autox.team.net>; Alpine List <alpines at autox.team.net>
Sent: Monday, March 17, 2008 8:42:28 PM
Subject: [Tigers] Aluminum Flywheel question

I have an aluminum flywheel that was custom made for one of my Brit cars and 
it has a removeable wear surface. The company that made the flywheel used 
the correct type bolts to secure the wear surface the the flywheel but they 
used long bolts that pass all the way through the flywheel and then they 
used lock-nuts on the backside of the flywheel to secure everything. Problem 
is there isn't enough room on the backside for the long bolts and the nuts. 
The bolts touch the housing on the rear seal and keep the flywheel from 
bolting down correctly, much less mention any rotational issues. I was 
thinking of just getting new bolts that are the correct length and just use 
a tap to thread the holes in the aluminum flywheel so I can screw the bolts 
directly into the aluminum to hold the removeable wear surface. I'm 
wondering if there will be any issues with the steel bolts screwing into the 
aluminum? My guess is that a flywheel doesn't see much more than maybe 150 
degrees F in temperature and if I use some locktite to install the bolts 
maybe this will work. Anyone know more about this who could let me know if 
they think this will work. The flywheel looks like one from Fidanza, but it 
was made locally. Any input is welcome.

TIA
Dan Eiland 
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