Date: Mon, 3 Mar 2003 18:32:42 -0800
Reply-To: Nock <McNock@EASYSTREET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Nock <McNock@EASYSTREET.COM>
Subject: Re: tiico vibrations/interesting testing done.
Content-Type: text/plain; charset="iso-8859-1"
Well with my bloody knuckle and all, I drove 40 mile rt to work, with the
"stock" brackets and no more "black ticco plate"
Yes, it is a normal engine now. Vibs yes, but sound/drone no. Feels like a
2.0 litter engine with modest engine mounts..
Sounds the same from 2000 to 5000 rpm. Just faster. I can no long no rpm by
the tone of the sound, I can only tell by the "speed" of the noise.
It seems that that all that sound come from that black tiico plate. (or is
it the source of vibrations that resonate elsewere?)
Here is some thinking.
The stock vw mounting bracket setup uses a "hinge" as you pointed out. At
no time does the stock setup try to bolt a ridge bracket at more than 3
locations - without introducing some sort of "compliant" hinge or joint.
In contrast, the ticco bracket is massive and rigid, but tries to bolt to
the engine block at 5 locations at once. There is no way the punny bolts
could "bend" that plate assembly, and if they did, it would have a lot of
"stored" energy. The plates mounting points are not even ground to any
tolerance - just look like there are placed in a jig the welded.
Extra interesting is that if you drop the plate on the floor it "rings"
clear like a bell. It's sort of "energetic" rather than "damp". Hard for
me to believe that noise when it just looks like a mass of welded mild
steel.
It think the plate "hums" and "resonates" in it's imperfect fit. Or is it
imperfect axis of rotation alignment per what Frank G is always pointing
out?
The stock plates can really have no resonance, since they are at most, a
three pint tripod.
Now I just have to work out a few details, like belt routing, clearance,
etc.. etc... etc, That the drawback, the plate handled all the clearance and
belt route problems.
I wonder if we could modify the ticco plate to work correctly? Apparently
some people's plate are stable.
Thanks for the tip, I am pretty sure that this is the point of the problem.
----- Original Message -----
From: "Matthew Pollard" <poll7356@uidaho.edu>
To: "Nock" <McNock@easystreet.com>
Sent: Monday, March 03, 2003 9:32 AM
Subject: Re: tiico vibrations replacing alternator with jetta
> > It is late and the brackets are in. I am sick of "trying" to get this
> > vibration/noise out! Why couldn't ticco figure it out for use?
>
> i totall agree. As i see it we spent 4K$ for the diesel engine mounts and
> a mediocre engine. The rest is up to us....
>
> > Well, the pictures of brackets you sent match the ticco engine exactly.
The
> > block, the bolts, everything it the same as the late 80's jetta/golf
> >
> > As to height, I think(hope) it will be ok, if you used the stock jetta
> > alternator, it would be no problem, as it is smaller in diameter (and
> > capacity) than the vanagons. I used my alternator and just swapped the
pully
> > end from a junk $5 alternator. I have to get a belt, and the length will
be
> > quite important as I do not have the full range of adjustment availble
(as
> > it would be to high)
>
> as for height- i have a syncro so i have an extra inch of room, so maybe
> that is why mine fit easier. But yeah, you only get a tiny bit of room to
> play with in there! btw, the 90 amp alternator fits fine... you are
> thinking about the 40 amp one. I wouldn't use that unless you HAVE to.
>
> > As to the AC, well using the standard vangon AC pump - I am not sure how
the
> > belts should run. I have not found an intact jetta to look at, so I
don't
> > now what it is suppose to look like.
>
> as for the ac you need the jetta/golf ac compressor and need to haveyour
> own hoses made (easy at an ac shop). The vanagon compressor is in the
> wrong position, of course. But at least you can sell those compressor for
> good $$$/.
>
> > The power steering support/cast part fit like it was suppose to, and
alligns
> > identically with where the ticco power steering mount was, (all the
pieces
> > seem to fit like a puzzel) but I think one part of it press's into the
> > special oil pan the ticco have. I put it in anyways.
>
> can you grind a chunk off to make it fit? i didn't see any problems in
> mine. hummmm.
>
> > I will drive to work tommorrow and see it it sounds any different. I
> > hope this is not another dead end.
>
> keep me posted. photos? got any. hope i haven't led you astray! At least
> it's better than the shit you paid 4000 dollars for!
> m
>
