Date:         Thu, 21 Sep 2006 21:05:06 -0700
Reply-To:     Shawn Wright <vwdiesels@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Shawn Wright <vwdiesels@GMAIL.COM>
Subject:      Re: [Diesel-Vanagon] Re: 5 Speed Trans: DX vs. AAP in my 1.6TD
              Vanagon
In-Reply-To:  <a06110429c138bc3853fd@[192.168.1.100]>
Content-type: text/plain; charset=US-ASCII

That's because they're off by quite a bit... the DK is tall, but not that tall. By my math, the DK
will give about 79kmh/50mph @ 2500rpm, compared with the DX at 74km/h (with 196/75r14
tires). The difference is about 7% between the two trannies in top gear. (3.89 vs 4.18 final
ratio in top gear for DK vs DX). Perhaps his tach calibration is off?
As for the MPG, it sounds possible, especially with a lighter pass. van with less drag. My
overall average for my Westy 1.6TD & DX, normally driven quite well loaded, and often at
EGT limited speed (which could be 70mph on flat ground), has been 31mpg imperial or
26mpg US.
I wouldn't be looking at a DX over a DK for the top end gearing, but for the extra ratio, and
the ultra low 1st gear. But even at that, I'd only recommend the 5 speed if you do offroading
and lots of hills. Otherwise, the 4 speed is much nicer and easier to drive. I'm getting used to
my DX, but two things could make it better - easier 1st gear entry (I'm thinking of removing
the 'side-thrust spring' as it seems redundant), and a lower reverse gear. With such a low
1st, the tall R gear becomes noticeable in adverse conditions. I think a syncro will solve most
of those problems though... ;-)

On 21 Sep 2006 at 17:03, Dan Weeks <Diesel-Vanagon@yahoogroups.com> wrote:

> I can't believe those numbers either--either the RPMs or the mileage.
> I've got an aircooled trans, and I get 25 at 70 if I'm very lucky.
> And it's turning lots faster than 2500 revs, too--closer to 4k revs,
> methinks.
>
> Dan
>
> >2500 rpm get 29.5 at 70 mph???
> >
> >WOW! I gotta get an aircooled trans...
> >
> >So, you siad you are selling a TD doka? Do elaborate..
> >
> >Myke
> >
> >
> >--- In
> ><mailto:Diesel-Vanagon%40yahoogroups.com>Diesel-Vanagon@yahoogroups.com,
> >Dan Weeks <theprofileco@...> wrote:
> >>
> >>  If I was getting 29.5 MPG at 70, I'd be reluctant to change
> >>  ANYTHING. My 1.6TD Westy gets 25 at that speed with a DK and stock
> >>  tires. A passenger van should do better, but I think you're doing
> >>  damn well by any standard at that speed.
> >>
> >>  Dan
> >>
> >>  >Is the AAP trans(just bought one) a good gearing swap into my 83
> >>  >Vanagon with 195x14 tires
> >>  >and DX trans? Gearing is same except AAP has 4.57 vs. 5.43 and final
> >>  >is .82 vs. .77 in the DX.
> >>  >One chart says will give me 10 mph more in fifth at same 2500 RPM
> >>  >but wonder if anyone has
> >>  >done this swap and if the driveablity of the AAP thru all gears is
> >>  >OK for my 1.6TD and what I
> >>  >can expect as to incresed mpg? Currently at 2500 rpm get 29.5 at 70
> >>  >mph with DX and chart
> >>  >shows that AAP would do 70 at 2250 rpm but how do you figure
> >>  >increase in mpg at this rpm?
> >>  >If proceed with swap will sell my exc. DX trans. Also as am moving
> >>  >from Nev. also be selling
> >>  >my diesel projects(my back & arthritis says no more projects):
> >>  >non-running 83 Westy 5
> >>  >speed, 90 doublecab TD, 86 Jetta(just listed these on Samba), 4-5
> >>  >rebuildable engine cores
> >>  >(two are 1.5, others 1.6). Also can offer with any of above cars,
> >>  >one of the following: two 50K
> >>  >1.6TD's(imported), one overhauled 1.6NA with 5K removed from my 83
> >>  >Vanagon when
> >>  >installed the TD(rebuilt head, rings, rod bearings, oil& water pump,
> >>  >NEW inj. pump and
> >>  >rebuilt injectors, etc.) and a 60K rabbit motor but will not sell
> >  > >runner engines until all vehicles
> >  > >sold. May consider bulk sale if attractive enough or very nice
> >  > >diesel synchro(Westy/
> >  > >Doublecab) in trade...thanks, Brian from Las Vegas
> >>  >
> >>  >
> >>
> >>
> >>  --
> >>  Dan Weeks
> >>  Freelance Writing and Photography
> >>  515/279-4825
> >>  theprofileco@...
> >>
> >>  [Non-text portions of this message have been removed]
> >>
> >
> >
>
>
> --
> Dan Weeks
> Freelance Writing and Photography
> 515/279-4825
> theprofileco@dwx.com
>
> [Non-text portions of this message have been removed]
>
>


Shawn Wright
http://members.shaw.ca/vwdiesels
'88 Westy 1.6TD 5 speed
'85 Jetta Diesel 1.6NA