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Date:         Wed, 19 Dec 2001 09:30:48 -0500
Reply-To:     Gary Stearns <gstearns@OPTONLINE.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gary Stearns <gstearns@OPTONLINE.NET>
Subject:      Re: Clutch Chatter Question
Comments: To: "G. Jetson" <dkcomet@YAHOO.COM>
Content-type: text/plain; charset=iso-8859-1

I have the TiiCo conversion too. No chatter problems, but some ideas. Be sure that the clutch hydraulics are bled free of air and moisture. An air bubble in there could allow the release mechanism to bounce. Also be sure that the bracket holding the clutch slave cylinder is solid. Bolted tight, no cracks. Last and least fun possibility, any lube leaks getting on the clutch disc? That'll chatter every time. Drips from the bottom of the bellhousing? Lube level in engine or tranny dropping?

To tighten the engine motion a bit, I have stuffed various rubber and foam into the voids in the motor mounts. Best so far (don't laugh): dense foam rubber from an "indoor" hockey puck.

Right now I'm experimenting with a bracket to tie the right and left motor mounts together running beneath the engine. The idea being to try to reduce the engine bounce and engine drone. I cobbled together a rough version, with very good results. The engine bounce was gone completely. Sometime soon I'll do a better version and post the results.

Re: the exhaust weld breaking, this is not uncommon. The vibrations put through the exhaust are violent to say the least. Any marginal work will be found and cracked to bits. To avoid this, every weld has to be of the best quality. Any bolted joints have to be substantial and tight. On our TiiCo I also added braces to the exhaust to absolutely prevent any vibration induced flexing.

Hope that helps-

Gary

----- Original Message ----- From: "G. Jetson" <dkcomet@YAHOO.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Tuesday, December 18, 2001 7:30 PM Subject: Clutch Chatter Question

> Hi all, > I have a Tiico conversion with 5k on it. It's a > syncro. I have been having some problems taking off > from a stop for the last week or so. If I dump the > clutch & hit it, no problem. If I gradually let the > clutch out like normal there is a strong vibration > coming from the back. Like something is bouncing until > the clutch is all the way out & I'm up to speed. > > I checked to make sure all motor mounts, etc. are > tight. No problems. I even had my girlfriend drive all > over town while I sat in back with the engine lid off, > No visible problems. > > I've heard about clutch chatter issues on the list, > but have never experienced it before. When I put the > new engine & tranny in, I used a new Luk premium > clutch kit from Bus Depot. This symptom is new. Has > anyone else had a chatter problem with this kit? > > One other notable symptom is that at the same time I > started to notice the chatter, the bracket bolted to > the exhaust bracket & welded to my muffler broke. I > have no idea about a connection between the 2. They > just occurred at the same time. My guess is the > chatter bounces the engine which may have moved enough > to make the muffler hit my tow hitch, thus breaking > the bracket. > > I love the Tiico, but one thing I find to be odd is > the huge rubber bushings on the motor mounts. They are > 2"+ thick & quite soft. I can move the motor around > easily by pushing & bouncing it,(yes, I told you the > bolts are tight). When I had the lid off driving, it > bounces quite a bit over bumps. > > Anyway, > Can the clutch be adjusted to stop chatter? If anyone > has any ideas or advice for me, please pmail me. I'm > having a super beefy custom bracket made for the > muffler. Hope that helps! > > Thanks & happy holidays, > > > ===== > David Kelly > 1990 Syncro Vanagolf 15" > 1963 Comet Convertible > Seattle > > __________________________________________________ > Do You Yahoo!? > Check out Yahoo! Shopping and Yahoo! Auctions for all of > your unique holiday gifts! Buy at http://shopping.yahoo.com > or bid at http://auctions.yahoo.com


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