Date: Tue, 18 Sep 2001 19:58:49 -0700
Reply-To: David Marshall <vanagon@VOLKSWAGEN.ORG>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Marshall <vanagon@VOLKSWAGEN.ORG>
Subject: Re: TiiCo Update
In-Reply-To: <3BA73CA5.00000D.91113@home>
Content-Type: multipart/alternative;
The vibrating is a function of all the 15 degree kits that I have seen as
they all use the Diesel motor mounts which are designed for the vibrations
of a Diesel motor and not a gasoline motor. My former Rabbit PU has
gasoline mounts and someone told me that using Diesel mounts is a good
upgrade - yes the engine didn't move around as much, but was more vibrations
felt. Our 15 degree kit uses Audi 80 motor mounts and there is no
vibrations felt at all unless you mount the exhaust incorrectly. Over the
winter we will be working on improved mounts for the Diesel swaps to reduce
the vibrations. Stay tuned!
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada V2J 6Z3
mailto:info@fastforward.ca http://www.fastforward.ca
Phone: (250) 992 7775 FAX: (250) 992 1160
• Vanagon Accessories and Engine Conversions
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf Of
Gary Stearns
Sent: September 18, 2001 5:23 AM
To: vanagon@GERRY.VANAGON.COM
Subject: TiiCo Update
Following is a message I sent to Peter at TiiCo this morning.
Thought it might be useful reading for other TiiCo-ists.
Hi Peter:
Our SA engine has been in and running well for about 1500 miles. 22
mpg and it goes! Ours you might recall also has the Weddle 5 speed attached
to it. What a spectacular combination. We also have a "sport" type
exhaust on the engine. This consists of a 55mm catalyst from a 16V Scirocco
( I think the largest VW has made), a 2.5" Walker MagnaFlo muffler
(basically a 6" diam. welded glass-pack), and a 2.25" stainless tailpipe.
Great music and great power. Certainly louder than stock but not intrusive.
After living with this combo for a little while, I felt as though the engine
was running a little lean (even after setup on the VAG 1552). Knowing that
this can happen with "open" exhausts that create a fuel need beyond the
injection system's ability to compensate, I added an adjustable fuel
pressure regulator with a gauge. Stock regulator showed 28-30 PSI, which is
about where it should be. I bumped the adjustable regulator to 35PSI. Wow.
Now more lean stumbles, throttle response is instant, top end just keeps
pulling. Try it! Finally, a critical change. We replaced the "GL" badge
on the hatch with an original "GTi" badge.
A question. I do get a pretty significant vibration/resonance
coming through the body at about 4000 rpm when accelerating. I know that
this is a typical problem with inline 4 cyl engines, but I also know that it
can be tuned out. I have not been able to figure out if the vibration is
coming from my non-stock exhaust (could be, it has broken 2 marginal welds
made by me already) or if the motor mounts are bottoming out and sending
vibes into the body. I have tried various combos of adjustment on the
exhaust mounts which do make some difference, but I don't think that's it.
To me it actually looks like the right motor mount bracket might be
squeezing inward too much and making contact with the rubber on the mount
itself under hard acceleration when the engine is trying to twist. I'm
thinking I might either pursuade it with an 8 lb. sledge, or remove the
mount and slot the mount hole to move ita way from the bracket more. Have
you had any experience with this?
Thanks for making this kit available! Our Vanagon is a whole
different animal!
Gary
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