If you could fit tires that big under your van, which you can't, you'd find
yourself with seriously under-performing brakes and you'd probably have to
fry the clutch getting it underway too... A taller third and fourth is a
more intelligent solution, along with a taller R&P.

On Mon, May 16, 2011 at 3:25 PM, Mike Miller <mwmiller@cwnet.com> wrote:

> Thanks
>
> Right now the hope is for a TDI. Price of the labor for conversion is the
> same, about, for either a TD or a TDI and I've had a TDI and liked it.
>
> I guess the Tire Rack would know this, and then I can calculate the percent
> change in rpm. The gearing change is 25% and I kind of doubt tires can make
> that much difference but maybe?
>
> Mike
>
>
> On 5/16/11 2:43 PM, "Scott Daniel - Turbovans" <scottdaniel@TURBOVANS.COM>
> wrote:
>
> > hi ..
> > 'which diesel' engine is a factor...
> >
> > a strong running tdi ?
> > or  a conventional pre-chamber style engine ...1.9 TD at least I would
> > expect ?
> >
> > if running a conventional pre-chamber TD engine ..
> > those are 5,000 rpm engines .........and more or less like the stock
> syncro
> > gearing.,
> >
> > on the other hand ...a tdi will have more power at lower rpm, and for
> those
> > you want higher gearing for sure in 3rd and 4th.
> >
> > depending on how wild you want to get, some pretty large and tall 15 inch
> > tires will fit on your syncro van.
> >   If the trans does not need rebuilding current..
> > the less expensive route for now is to play with 'rubber gearing'
> > improvements.
> >
> > for a stock 75 hp 1.9 TD AAZ engine ..
> > stock syncro gearing could be all right .................and it depends
> on
> > *what use* you have in mind ..
> > from dead slow rock crawling, to mud prowess, to highway cruising..
> > that needs to be spoken to also, for people to be able to make
> intelligent
> > comments about gearing and tire changes.
> >
> >
> > ----- Original Message -----
> > From: "Mike Miller" <mwmiller@CWNET.COM>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Monday, May 16, 2011 2:13 PM
> > Subject: FW: Tire question
> >
> >
> >> Subject: Tire question
> >>
> >> Vanaroonies,
> >>
> >> I feel the list has been too quiet lately so I thought I'd bring up a
> tire
> >> question.
> >>
> >> Converting a van, 87 syncro, to diesel [if the money falls from heaven,
> >> that
> >> is]. The advice is to change 3rd and 4th so that the diesel operates in
> >> the
> >> right rev range on the highway.
> >>
> >> This will increase the gap between 2 and 3, which is already too large
> >> really.
> >>
> >> So I wondered how much the revs could be decreased at highway speeds
> [and
> >> all others] using the tallest tires? I have 15" rims and since it's a
> >> syncro
> >> and a westy I need Light truck tires.
> >>
> >> Any ideas?
> >>
> >> Mike
> >> Flame suit on
> >>
> >> ------ End of Forwarded Message
>

--
Jake

1984 Vanagon GL 1.9 WBX - 'The Grey Van'
1986 Westy Weekender/2.5 SOHC Subie - 'Dixie'

Crescent Beach, BC

www.thebassspa.com
www.crescentbeachguitar.com
http://subyjake.googlepages.com/mydixiedarlin%27