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Re: [Fot] No vacuum after Spitfire engine rebuild

To: Bill Babcock <billb@bnj.com>
Subject: Re: [Fot] No vacuum after Spitfire engine rebuild
From: Tony Drews <tony@tonydrews.com>
Date: Sun, 25 Apr 2010 14:48:00 -0500
That's an excellent point.  On the TR-4, there are pins on the side 
of the head the that fit into the intake manifold.  If you misalign 
the manifold a bit you can end up with the bottom of the manifold 
held away from the head by the pins leaving a huge gap - easy to make 
that mistake.

- Tony

At 02:39 PM 4/25/2010, Bill Babcock wrote:
>I'd also look for a massive air leak.
>On Apr 25, 2010, at 9:32 AM, Tony Drews wrote:
>
> > If it runs on starting fluid, it sure seems like a carburetion / 
> fuel issue.  Did you "degree" the cam when assembling?  Having it 
> off in timing by a tooth can make it run like crap and be hard to start too.
> >
> > If you've got SU carb's, with the piston removed you should be 
> able to see a little fuel in the jet tube.  A little bit of debris 
> can clog the passage from the float bowl to the jet.
> >
> > - Tony
> >
> > At 02:23 PM 4/25/2010, George Harmuth wrote:
> >> Time query the collective again. My son and I just finished a rebuild of
> >> his 72 Spitfire (1296, large journal) and I can't get it to run.  The car
> >> will start up on starting fluid but won't even fire on it's own. Confirmed
> >> fresh gas to carb, gas in fuel bowl, disassembled carb, cleaned and
> >> inspected, looks OK and was working (rebuilt last summer) before engine
> >> rebuild.
> >>
> >> Think I've tracked it down to no vacuum, either from the vacuum port (flat
> >> 0 reading on gauge, no fluctuations ) on the carb or gross check, putting
> >> my hand (or carb sync gauge) over the mouth of the carb. I've removed the
> >> carb and intake manifold, gaskets etc all look good. Removed the valve
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