Date: Sun, 23 Feb 2003 12:55:18 -0800
Reply-To: Nock <McNock@EASYSTREET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Nock <McNock@EASYSTREET.COM>
Subject: Re: vanagon with ticco engine/vibrations
Content-Type: text/plain; charset="iso-8859-1"
On trying to rid the "last vestige" of drown between 3-4K rpm.
Could it be that it is not the exhaust, but simply that the rear engine
mounts are inadequate for the engine at 3-4K? I have heard that this
engine, vibrates a lot AND has a natural resonance at 3-4K. Maybe the rear
mounts (which are primitive and small by modern standards) are letting this
vibration reach the frame, which in turn creates, in large open space of the
vanagon body type, the "drone" type sound we hear?
How can we test if it is engine mount related our exhaust related?
Can any user help with this?
Andrew Nock
85 westy
ticco engine with air and power steering
w/ free hung exhaust per McClean
w/ cat support bolted directly to engine block (ie no rubber)
w/ rubber mounted alternator bracket per someone
w/ mastic rubber sheets on body metal
w/ extra muffler hangers on the manifold to make sure it is not resonating
w/ drivers right side forward engine support bar rubber bushing welded
w/ custom weather stripping on all doors to make door joints "surface flush"
and help eliminate wind noise
w/ 2 pieces of sheet rock laying flat on van floor to help eliminate sound
from floor (this is temporary!)
----- Original Message -----
From: "Bob Stevens" <mtbiker62@hotmail.com>
To: <McNock@easystreet.com>
Sent: Saturday, February 22, 2003 8:38 AM
Subject: Re: vanagon with ticco engine
> Hi Nock. Yes, I have the exhaust drone between 3-4K rpm. The harder I
> accelerate the noisier or louder the "rap" is. When I get to cruise at any
> speed, and am not putting pressure on the accelerator to go faster, it's
> much quieter than my wasserboxer was. It's quiet at cruise 4000-4200 and
75
> mph.
> My opinion is that the exhaust system on these is shorter than the
original
> engine application in the Jetta, and that is where most of the noise comes
> from. It's shorter by 6 or 7 feet!
> The mechanic who installed mine, Ed Rogers at VEE DUB Service in Ogden,
UT,
> is putting one in his Syncro van right now. He started yesterday. He's
going
> to put a performance muffler on his, have the entire system, inside and
out,
> ceramic coated, then start modifying according to what the results are.
I'm
> hoping to benefit from his "mods" and have him do mine. I gave him all the
> mod info that Ed McLean has developed and posted and he's going to do
that.
> His email addy is: email99@BELLSOUTH.NET if you want to contact him
directly
> about his latest mods. He said in his last mail he was going to make this
an
> ongoing project and that was several months ago. If you like I can send
you
> text and pics of what he sent me? Alistair Bell post almost all of it on
his
> web site: http://www.members.shaw.ca/albell/mounts.html
> ....oops....I see by going back to my "files" I have already sent you the
> McLean "stuff".
> By the way, I bought this Syncro from my neighbor because his wife and
kids
> didn't like the noise of the exhaust when going up hills. He bought a 2002
> Eurovan Camper and would rather have "my car".
>
> Cheers, Bob
>
> http://groups.msn.com/BobsPhotoShare
>
>
>
>
>
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