Date: Thu, 20 Oct 2005 11:52:57 -0700
Reply-To: David Marshall <mailinglist@FASTFORWARD.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Marshall <mailinglist@FASTFORWARD.CA>
Subject: Re: Taller 3.73 R+P for automatic transmission found!
In-Reply-To: <20051018235835.JLZR17956.priv-edtnes90.telusplanet.net@cpweb5.idig.net>
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Tony,
You are right, increasing tire size will slow the engine down. But most
people with automatics arn't interested in going much larger than say a
215/75R15 which is about the limit of what would fit in the stock spare tire
location.
4.09 4.09 3.73 3.73
SPEED 185R14 215/75R15 185R14 215/75R15
90km/h 3000 2780 2730 2530
100 3330 3080 3030 2810
110 3660 3400 3350 3100
120 4000 3700 3650 3380
130 4330 4000 3950 3650
So really, the 3.73 Ring and Pinion along with 27.5" tall tires would result
in a really nice setup with a TDI with comfy cruising at 110 to 120km/h
which works out to 70 to 75 mph which is perfect interstate cruising speeds.
I am about to put an order in for this early next week... anyone else
interested in some?
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel-Hixon Road
Quesnel BC Canada V2J 6Z3
http://www.fastforward.ca mailto:sales@fastforward.ca
Phone: (250) 992 7775 FAX: (250) 992 1160
- Vanagon Accessories and Engine Conversions
- Vanagon, Transporter and Iltis Sales and Importation
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-----Original Message-----
From: Tony Thompson [mailto:tonyt_eye@NS.SYMPATICO.CA]
Sent: October 18, 2005 4:52 PM
To: VANAGON@GERRY.VANAGON.COM; David Marshall
Subject: Re: Taller 3.73 R+P for automatic transmission found!
On Mon, 17 Oct 2005 13:35:08 -0700, David Marshall
<mailinglist@FASTFORWARD.CA> wrote:
>Volks,
>I have found a source for the taller 3.73 R+P for the automatic
>transmissions - stock is 4.09. We're looking at about $1250 Canadian /
cira
>$1000 USD for a new set. This price could come down a small bit if we can
>combine shipping on these.
>
>This would bring the highway RPMs down to the following with stock 25.5"
>tall tires
>
>SPEED STOCK 3.73
>100km/h 3330 3030
>110km/h 3660 3350
>120km/h 4000 3650
>
>Basically these R+Ps will drop your 3rd gear speeds by 10% making the
engine
>more palatable for a TDI or Turbo Diesel conversion.
>
>Please pmail me if you are interested.
>
>Cheers!
>
>David Marshall
>
>Fast Forward Automotive Inc.
>4356 Quesnel-Hixon Road
>Quesnel BC Canada V2J 6Z3
>
>http://www.fastforward.ca mailto:sales@fastforward.ca
>Phone: (250) 992 7775 FAX: (250) 992 1160
>
>- Vanagon Accessories and Engine Conversions
>- Vanagon, Transporter and Iltis Sales and Importation
>- European Lighting for most Volkswagen models
>
>
>Due to the large volume of email we receive, PLEASE include previous
>emails when responding. This will allow us to read the complete dialogue
>in one message and will result in quicker and more accurate responses.
David could you not just put a 16"wheel and similar width and profile tire
on the rear to achieve the same effective gear ratio? ie a 195-75-16 or
similar. If that was combined with stock front wheels the speedo would be
correct and you'd get the same speed vs RPM. I've never done this though
so I can't comment on handling or ride but it looks like you've seen a lot
of variants through your shop.
