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Re: [oletrucks] Vibration revisted

To: "Grant Galbraith" <trks@javanet.com>,
Subject: Re: [oletrucks] Vibration revisted
From: "Rob Steinmetz" <rstein@bright.net>
Date: Mon, 13 Sep 1999 20:21:59 -0400
    Try a LuK RepSet next time.  Everything in the set is 100% new, and has
a higher quality than Centerforce overall.  Centerforce clutches are largely
made up of OE clutch cores.  If you would have looked on the clutch you just
installed, you would have seen a LuK logo stamped into the cover.
    I don't want to get into a discussion about diaphragm spring type clutch
design.  Just keep in mind that Centerforce is a company that has built it's
reputation on having a higher clampload than OE.  In their designs, there's
usually a compromise of wear capacity for the clampload increase.
    Don't believe me, call LuK at 1-800-274-5001 and ask for technical
services.  They'll explain the difference and point you to a distributor
that can sell you a set the next time.
    Please send me off-list email if anyone wants to discuss this further.
----- Original Message -----
From: Grant Galbraith <trks@javanet.com>
To: oletrucks <oletrucks@autox.team.net>
Sent: Sunday, September 12, 1999 10:51 PM
Subject: [oletrucks] Vibration revisted


>     I wanted to title  this "why I will never buy another rebuilt
> pressure plate" but it was too long.
>    Some time ago I posted a question trying to determine the source of a
> vibration of my newly restored '50 with rebuilt 235. One suggestion I
> got was to balance the resurfaced flywheel and pressure plate which I
> did. The machine shop balanced the flywheel by itself and then the
> pressure plate bolted to it. The machine shop said the flywheel was a
> little off but the pressure plate was whopping 24 grams off. It was a
> rebuilt unit and he had to drill holes and weld a half dozen washers on
> to balance. I put it back in and although the vibration at 3K was less I
> seemed to have a new one at about 2K. All the welding added a little
> chatter to the clutch also. This vibes drove me crazy and I had the
> clutch out recently to replace an oily lining (use the clutch covers). I
> didn't see any vendors or LAPS that sell new pressure plates so I called
> BW and they refereed me to centerforce. Their tech person sold me an V-8
> plate and through out bearing for my 11 inch clutch and they bolt right
> on. Today I went for a test drive and Ureka, the vibration that has
> plagued me for 6K is completely gone.
>    Centerforce I know is probably overkill for a 235 but any stock V-8,
> 292 or 250 plate will fit as long as you get the right bearing for it. I
> liked the fact that centerforce told me all their plates and discs are
> balanced. They advertise 30% more holding with stock pedal feel but I
> find the pedal a little stiffer than what I call stock.
>
> Grant 50 3100
>
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>

oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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