Date: Wed, 5 May 2004 23:50:45 -0700
Reply-To: Robert Keezer <warmerwagen@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Robert Keezer <warmerwagen@HOTMAIL.COM>
Subject: Re: Questions re. Audi 3A engine swap (after searching the
archives)
Content-Type: text/plain; format=flowed
Aw rats! I wanted to disagree with you thinking you would'nt notice. Why
does everyone have to lurk?
Well, maybe the differences are practical-one for load carrying and one for
speed. When I say speed I mean the ability to cruise freeway without
sacrificing fuel economy.
Up to a point of course, as higher speeds equal greater wind resistance and
lower fuel economy.
My best economy is 60 mph or lower, which is 2,600-3,000 rpm. Not much
torque in 4th as you have with your Diesel trans.
Especially now I am glad I went for the gas trans. I had a Diesel trans
originally. A friend and I traded vanagons for a comparison test- I was able
to out-distance him quickly uphill in spite of his torque.
Where i live it's important not to hold up traffic.
The Diesel trans has a way of dampening your greatest HP ambitions(like the
old Bus gear reduction boxes). If you want HP and speed with economy-4-speed
gas is it.
If hill climbing ability is the goal, the geared -down trans is best.
The Four speed gas (as in air-cooled vanagon trans)gears are widely spaced
as ratios go- so I look forward to the five-speed i plan to have built out
of my four-speed. it's been a long wait-
Good to hear you are still perfecting the inline-
Robert
1982 Westfalia
----Original Message Follows----
From: FrankGRUN@aol.com
To: warmerwagen@HOTMAIL.COM, vanagon@GERRY.VANAGON.COM
Subject: Re: Re: Questions re. Audi 3A engine swap (after searching
the archives)
Date: Thu, 6 May 2004 02:31:32 EDT
In a message dated 5/5/04 11:11:09 PM, warmerwagen@HOTMAIL.COM writes:
> With my present combination of trans and engine I get about 19-23 mpg.
>
> I think it would be less with a Diesel trans.
>
Robert,
I'll still disagree. I've now run transmissions both in preparation for
putting in the Turbo Audi. I stand with the numbers. You pay for the power
used. Of
course the main variable is fuel economy it the interconnection of the base
of the reptilian brain with the control foot. Expending available thrust is
fun. As to the clutch, for the larger diameter clutch to have more towing
capacity, its contact area must exceed the gear reduction comparison in
final drive
ratio. At which point the trans is well on its way to toast.
The ABA block with 1.8 head has a much poorer flow efficiency than the 3A
with the 3A 8V head. At that point, the ABA block only has the bore/stroke
ratio
going for it, if it has the squirters and forged crank.
Frank Grunthaner
Frank Grunthaner
Robert
1982 Westfalia 1987 Wolfsburg
