Date: Sun, 19 Aug 2007 17:08:12 -0700
Reply-To: Robert Keezer <warmerwagen@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Robert Keezer <warmerwagen@YAHOO.COM>
Subject: Re: '82 diesel 1.8 conversion
In-Reply-To: <0JN100EZDOQ0HF76@vms040.mailsrvcs.net>
Content-Type: text/plain; charset=iso-8859-1
--- pdooley <psdooley@VERIZON.NET> wrote:
> A little claririficatoion here-
>
> The crossflow head flows better than the
> counterflow head
What makes a crossflow head flow more than a
counterflow?
Robert
1982 Westfalia
--- pdooley <psdooley@VERIZON.NET> wrote:
> A little claririficatoion here-
>
> The crossflow head flows better than the
> counterflow head and will make more
> horsepower regardless of the intake manifold.
>
> Longer intake runners don't make more
> horsepower.
>
> Longer runners make more torque at lower rpm.
> Ever wonder why the Eurovan VR6 intake manifold
> has longer runners than the
> Golf/Jetta VR?
>
> So the crossflow head coupled with the long
> runner ABA intake manifold is a
> better choice.
>
> The only disadvantage is the increased motor
> height.
>
> -----Original Message-----
> From: Vanagon Mailing List
> [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> neil N
> Sent: Sunday, August 19, 2007 2:49 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: '82 diesel 1.8 conversion
>
> Cool. Ok.
>
> I generally understand what you are saying.
>
> Any decrease in HP when 1.8 head put on 2.0 ,
> is due to the 1.8 intake
> manifold shorter runs and at exhaust.
> Especially if these are not
> tuned to whatever cam is being used. Correct?
>
> Neil.
>
> On 8/19/07, Robert Keezer
> <warmerwagen@yahoo.com> wrote:
> > Neil,
> >
> > The main reason for going with a 1.8 head and
> > intake manifold when using the Diesel
> hardware is
> > is to fit the engine under the engine lid.
> >
> > Using the 2.0 stock puts the crossflow intake
> > manifold above the lid, meaning you have to
> cut a
> > hole in the lid .
> >
> > The benefit of the longer intake runners on
> with
> > the crossflow head is hp gain.
> > Long runners equal hp gain.
> >
> >
> > The benefit of the longer runners is in a
> narrow
> > range of RPM, most likely over 5,000 rpm,
> where
> > it is rare to go in a Vanagon.
> >
> > The compromise then is the Digifant intake
> > manifold. This has longer runners than say a
> VW
> > Fox or Rabbit.
> >
> > Long runners are tuned runners. They help
> > increase air flow to the cylinders. The more
> air
> > -fuel you can cram into the cylinders, the
> more
> > power you can get. The exhaust downpipes also
> > need to be a tuned length, such as individual
> > headers on a performance race engine have a
> > certain length before joining together.
> >
> > Length of intake and exhaust is designed by
> > formula starting with the cam . The pressure
> wave
> > is timed to return to the valve just as it
> opens
> > or closes.
> >
> > Incorectly tuned exhaust will lower hp .
> >
> > The Tiico has a good example of a tuned
> exhaust.
> > The manifold divides the exhaust in 2 and
> sendsit
> > down two seperate pipes a certain length
> before
> > joining.
> >
> > The intake ports and exhaust ports are the
> same
> > size for 1.8 and 2 liter.
> >
> > The longer tuned length is useful for a
> lighter
> > car that can spool up rpm rapidly.
> >
> > In the heavy Westfalia you need a bigger
> engine
> > or performance mods to do this.
> >
> > Robert
> >
> >
> >
> > --- neil N <musomuso@gmail.com> wrote:
> >
> > > Hi Robert.
> > >
> > > Do you know if there's a HP loss (tiny loss
> > > likely) when using the 1.8
> > > head on the ABA 2.0?
> > >
> > > Thanks.
> > >
> > > Neil.
> > >
> > > --
> > > Please send me your Vanagon/Westfalia
> links!
> > > http://vanagonlinks.googlepages.com/home
> > >
> > > Neil Nicholson. 1981 Air Cooled Westfalia.
> > > http://web.mac.com/tubaneil
> > >
> > >
> > >
> > > On 8/18/07, Robert Keezer
> > > <warmerwagen@yahoo.com> wrote:
> > > > Hi Byron,
> > > >
> > > > I have done the 1.8 conversion and my
> > > > recommendation is to use a 2.0 liter(
> '93-'99
> > > ABA
> > > > block with the 1.8 head instead.
> > > >
> > > > I have gone thru two 1.8's and so has a
> > > > friend's.In my experience they don't hold
> up
> > > to
> > > > the demand the Westfalia puts on them.
> > > >
> > > >
> > > > The 1.8's are underpowered in a Westfalia
> and
> > > the
> > > > strian is too much for the rods . I have
> had
> > > two
> > > > engines burn out rod bearings and
> likewise my
> > > > friends.
> > > >
> > > > The 2 liter has oil spray nozzles that
> spray
> > > the
> > > > bottom of the pistons, cooling them and
> thus
> > > > keeping the rods cooler.
> > > > It also has more HP and torque than the
> 1.8.
> > > > 2.0 blocks around here go for
> 200.00-300.00.
> > > >
> > > > You use the 1.8 head and head gasket. You
> > > need to
> > > > clearance the left firewall to accomodate
> the
> > > > intake manifold. For fuel injection
> system
> > > you
> > > > can use CIS, CIS-E, DIgifant 2, Motronic.
> > > >
> > > > I find Digifant 2 the esiest fuel
> injection.
> > > > ('88-'92 Golf -Jetta)
> > > >
> > > > My 2 liter has gone over 215,000 miles
> since
> > > I
> > > > installed it in 1999. It's a strong
> engine,
> > > and
> > > > smoother, less vibration.
> > > >
> > > > I know the Diesel sounds good but I
> would'mnt
> > > go
> > > > with anything less that a TDI or 1.9
> turbo.
> > > >
> > > > The other thing to consider is the
> > > transmission.
> > > > Your stock Diesel trans is low geared and
> > > makes
> > > > the engine run about 1,000 rpm's higher
> than
> > > if
> > > > you use a air-cooled trans with all the
> > > Diesel
> > > > trans stuff like bellhousing, brackets
> and
> > > > mounts.
> > > >
> > > > GTI engine , 1.8 , about 105 hp and 109
> ft
> > > lbs
> > > > torque.
> > > > ABA engine 115 hp and 126 ft lbs of
> torque.
> > > >
> > > > Of course, how you fuel it or mods your
> > > > make/don't make, can increase/decrease
> those
> > > > numbers.
> > > >
> > > >
> > > >
> > > > Robert
> > > >
> > > > 1982 Westfalia
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --- byron nemela <byronknemela@YAHOO.COM>
> > > wrote:
> > > >
> > > > > I need some help from folks who've done
> the
> > > 1.8
> > > > > I4
> > > > > switch. Even better, I could use a
> mechanic
> > > > > who's done
> > > > > conversions in the Detroit/Ann Arbor
> > > area...
> > > > >
> > > > > OK, so I've got a lovely rust-free '82
> > > Westy
> > > > > with a
> > > > > blown 1.6TD, and I'm about to buy a 1.8
> > > engine
> > > > > from a
> > > > > GTI for $300. (I know, why gas? A used
> > > 1.6TD
> > > > > will cost
> > > > > me $2000 shipped and still be 68HP vs
> > > 107... If
> > > > > anyone
> > > > > can sway me to a 1.9TD switch, please
> let
> > > me
> > > > > know.)
> > > > >
> > > > > Thing is I'm a potter not a mechanic,
> but a
> > > > > buddy can
> > > > > drop the bad engine and mount the new
> one.
> > > Then
> > > > > 'Bill
> > > > > Muncy's' in Ann Arbor says he'll do the
> > > rest
> > > > > (charging
> > > > > me $74/hr 'including head scratching').
> So
> > > I'd
> > > > > like a
> > > > > general idea of how big a job it is,
> how
> > > long
> > > > > it
> > > > > takes.
> > > > >
> > > > > 'Tom's VW pages' online, gives great
> info
> > > on
> > > > > diesel to
> > > > > gas swap, but if anyone can point out
> the
> > > best
> > > > > 'step-by-step' resource - that would be
> > > great!
> > > > > I just
> > > > > want to reduce our 'head scratching'
> here
> > > (and
> > > > > would
> > > > > love to find a local shop who's done
> this
> > > kind
> > > > > of
> > > > > switch).
> > > > >
> > > > > ...and (just so you know how the VW
> gods
> > > are
> > > > > having
> > > > > fun here) I've got two months off
> starting
> > > in
> > > > > Sept and
> > > > > had planned to tour the southwest in
> the
> > > bus!!!
> > > > > I
> > > > > guess better the engine blew here than
> > > there,
> > > > > but I'd
> > > > > still love to have it on the trip...
> > > > >
> > > > > So if you 1.8 Vanagon drivers could
> help me
> > > > > through
> > > > > this process, that would be terrific!
> > > > >
> > > > > Thanks,
> > > > > Byron
> > > > >
> > > > > '82 Westy 1.6TD (rod through head...)
> > > > > '93 Volvo 940T (old reliable)
> > >
> >
> >
> >
> >
> >
>
____________________________________________________________________________
> ________
> > Be a better Globetrotter. Get better travel
> answers from someone who
> knows. Yahoo! Answers - Check it out.
> >
>
http://answers.yahoo.com/dir/?link=list&sid=396545469
> >
>
>
> --
> Please send me your Vanagon/Westfalia links!
> http://vanagonlinks.googlepages.com/home
>
> Neil Nicholson. 1981 Air Cooled Westfalia.
> http://web.mac.com/tubaneil
>
____________________________________________________________________________________
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