[T3] New Distributor Same Results, 034

Thu Jun 12 08:48:51 PDT 2014

Adam,

You MUST pull your vacuum off of the body off the left (3 & 4) Dellorto
carburetor. This is the only vacuum port that will give you a clean signal
and the only one Dellorto designed for the task. (Some Dells did not come
with a vacuum port, so it may need to be tapped, which is a simple matter).

At idle (850-900 RPM), you will see nominal to no effect on the vacuum
can's advance as you described. The vacuum advance should only operate
under load, as the engine lugs and requires more fuel.

The 034 SVDA functions almost exactly the same as a mechanical advance only
distributor (009) until the motor needs more advance during load. This is
why the 034 is timed at 7.5 degrees BTDC with the vacuum port disconnected
from the carburetor and plugged.

Make sure your vacuum can is operating properly by sucking on the end. If
it moves, it is good. If it does not or just barely moves, it needs to be
replaced.

I would check and re-check that one of your carbs isn't plugged by debris
before going any further. The stumbling off idle is a pretty common
indication of some grit plugging up one the idle air ports in the
carburetor. As you know Dellortos are pretty easily fouled up. If you have
not already, consider installing a set of CB Performance tall idle air
intake ports to keep grit from falling into the idle air ports.

Also, not having the linkage perfectly synced will also cause the symptoms
you describe.

I would leave the 009 off your motor until you are 100% sure it isn't a
plugged carb.

If all else fails I would contact John Connoly or one of his racing gurus
at aircooled.net He will be able to give you a definitive answer on what
may be going on. He endorses the SVDA and Dellorto combo and has come
across far more scenarios than I.

Jon Stiles

On Thu, Jun 12, 2014 at 8:07 AM, Craigs List <craigslistcsprings at gmail.com>
wrote:

> Will do. I'm taking, and using, all of the advice I can get right now. I
> appreciate the tip. I will give them a call a little later.
>
> Adam
> On Jun 12, 2014 8:01 AM, "Daniel K. Du Vall" <dduvall at 1peter4-10.org>
> wrote:
>
> > Well I would still say try and call Dan or Mike at Competition
> > Engineering. Mike is good with the automatics in performance setups also.
> > So he might have an idea or at least say you might have to live with it
> for
> > now.
> >
> > -----Original Message-----
> > From: type3-vwtype3.org [mailto:
> > type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Craigs List
> > Sent: Thursday, June 12, 2014 8:52 AM
> > To: Type 3 List
> > Subject: Re: [T3] New Distributor Same Results, 034
> >
> > Yeah, I already have mine choked down to 28mm. The 36's come stock with
> > 30's and the 40's came stock with 34's. Because of the stock engine and
> > such, I knew both of these options would be to big. The 28's are what
> > everyone recommends for a stock 1600 with stock heads.
> >
> > Once again the sticking point is this automatic. Word to the wise, only
> > buy automatic if you plan to stick 100% stock. If you plan on having ANY
> > fun just get you a manual.
> >
> > I think the next thing to do would be to try and bump the displacement
> up.
> > Maybe a set of 88mm thick walled pistons to get the engine a little more
> > low end torque to handle that initial rush from the carbs. This is
> > something I cannot do now. Just another Idea for another day.
> >
> > Adam
> > On Jun 12, 2014 7:44 AM, "Daniel K. Du Vall" <dduvall at 1peter4-10.org>
> > wrote:
> >
> > > Yes it's in the throat of the carb
> > >
> > > http://vwparts.aircooled.net/Dellorto-DRLA-Venturi-28mm-fits-36-40-and
> > > -45mm-p/dellorto-drla-venturi-28.htm
> > > It has the part in it that the fuel sprays out of.
> > >
> > > Daniel Du Vall
> > >
> > > -----Original Message-----
> > > From: type3-vwtype3.org [mailto:
> > > type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Craigs List
> > > Sent: Thursday, June 12, 2014 8:39 AM
> > > To: Type 3 List
> > > Subject: Re: [T3] New Distributor Same Results, 034
> > >
> > > " I believe that you can change out the entries in those."
> > >
> > > Change out the what? Are you talking something in the carb? Please
> > explain.
> > > I'm still working on my coffee.
> > >
> > > Adam
> > > On Jun 12, 2014 7:35 AM, "Daniel K. Du Vall" <dduvall at 1peter4-10.org>
> > > wrote:
> > >
> > > > I believe that you can change out the entries in those. My 45mm
> > > > Dells had been choked down to help with that.
> > > > There is a guy in Arizona who helped me with mine on my bug maybe he
> > > > would have a suggestion for your combination.
> > > >
> > > > His site is http://cevw.com his name was Dan Lawson also Mike fisher
> > > > works there. They both have lots of knowledge on these.
> > > >
> > > > Dan Du Vall
> > > >
> > > > -----Original Message-----
> > > > From: type3-vwtype3.org [mailto:
> > > > type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Craigs
> > > > List
> > > > Sent: Thursday, June 12, 2014 8:28 AM
> > > > To: Type 3 List
> > > > Subject: Re: [T3] New Distributor Same Results, 034
> > > >
> > > > Better, but it still will fall on its face at low rpm. I don't have
> > > > to flutter it off the line as much, but I do still have to flutter
> > > > it off the line.
> > > >
> > > > My next course of action is to blow the car up and start with a
> > > > manual......or get an lm1 connected to it to see exactly what is
> > > > happening at low rpm. My suspicion is that 4 throats are filling
> > > > with air faster than these little heads can deal with it causing a
> > > > lean
> > > condition and bog.
> > > >
> > > > I'll keep messing with it and report back. I still have some tricks
> > > > up my sleeve. I just didn't expect this much trouble from a better
> > > > set of
> > > carbs.
> > > > Part of me wants to go back to ict's, but the mileage gain from the
> > > > Dell's is unreal and will pay for themselves rather quickly...
> > > >
> > > > Torn,
> > > > Adam
> > > > On Jun 12, 2014 6:53 AM, "Daniel K. Du Vall"
> > > > <dduvall at 1peter4-10.org>
> > > > wrote:
> > > >
> > > > > So how's it run like this?
> > > > >
> > > > > -----Original Message-----
> > > > > From: type3-vwtype3.org [mailto:
> > > > > type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Craigs
> > > > > List
> > > > > Sent: Thursday, June 12, 2014 7:13 AM
> > > > > To: Type 3 List
> > > > > Subject: Re: [T3] New Distributor Same Results, 034
> > > > >
> > > > > It is running like this now. I may even throw the 009 I have in
> > > > > the garage back in for now. What we found yesterday, much like
> > > > > with only having one port drilled and tapped for the automatic, is
> > > > > that the vacuum signal is all over the place.
> > > > >
> > > > > We just disconnected the vacuum can and set the timing at 35
> > > > > degrees total advance and let the low end fall where it wanted.
> > > > > Before anyone freaks out, at this elevation we get the advantage
> > > > > of running more timing without rattling it apart.
> > > > >
> > > > > Adam
> > > > > On Jun 11, 2014 11:23 PM, "Daniel K. Du Vall"
> > > > > <dduvall at 1peter4-10.org>
> > > > > wrote:
> > > > >
> > > > > > I would try what Jim suggested run it without the vacuum advance.
> > > > > > Most every setup of Dellorto carb I have seen including my 45s I
> > > > > > ran on my bug used a 009 or one of the MSD.
> > > > > >
> > > > > > -----Original Message-----
> > > > > > From: type3-vwtype3.org [mailto:
> > > > > > type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Craigs
> > > > > > List
> > > > > > Sent: Wednesday, June 11, 2014 11:44 PM
> > > > > > To: Type 3 List
> > > > > > Subject: Re: [T3] New Distributor Same Results, 034
> > > > > >
> > > > > > A few questions;
> > > > > >
> > > > > > 1) Am I the first person in the history of type 3's to use
> > > > > > dellorto carbs on an automatic?
> > > > > >
> > > > > > 2) what is the stall of a type 4 torque converter vs a type 3?
> > > > > > Or are they the same?
> > > > > >
> > > > > > 3) how does one get a clean vacuum signal from Dell's to the
> > > > > > vacuum advance?
> > > > > >
> > > > > > Adam
> > > > > >  On Jun 11, 2014 7:29 PM, "Jim Adney" <jadney at vwtype3.org>
> wrote:
> > > > > >
> > > > > > > On 11 Jun 2014 at 20:58, Keith Park wrote:
> > > > > > >
> > > > > > > > Just a thought, have you tried adjusting the accelerator
> > > > > > > > pump
> > > > stroke?
> > > > > > > > I had to do that to get the last little stumble out of the
> > > > > > > > Crate with the Ethanol.
> > > > > > >
> > > > > > > And maybe start by verifying that the accel pump is actually
> > > working.
> > > > > > >
> > > > > > > --
> > > > > > > ******************************* Jim Adney, jadney at vwtype3.org
> > > > > > > Madison, Wisconsin, USA
> > > > > > > *******************************
> > > > > > >
> > > > > > > _______________________________________________
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