Couple quick ones:
Mk-III definitely had non-synchro 1st. And I learned to double clutch
in 2nd and 3rd, too because my tranny kept breaking synchro balk
springs. (For those who are keeping score, I could pull the trans and
OD, disassemble is sufficiently to replace springs, replace gaskets
and reinstall it in 45 minutes. I think. It's been a while and the
older I get the faster I was, y'know ;)
Lifting a piston is a great way to lean out a carb -- very large
orifice with constant air flow --> no pressure drop to draw fuel
through the jet. But I would agree that a stuck-in-the-down-position
jet (as if it were always choked) would give you apparent flooding
problems. Also check float levels and fuel pump output pressure.
Fuel pressure in these carbs is quite small (2 or 3 psi as I recall.)
Donald.
> Date: Sun, 11 Nov 2001 21:11:41 -0800
> From: Dan Canaan <Flinters@picarefy.com>
>
> At 11:57 PM 11/11/01 EST, KEschhofen@aol.com wrote:
>
[SNIP]
> >Question... Does the spitfire have a synchro for first gear? I would grind
> >first gear unless the car was almost stopped. I know that TR3 don't have one
> >on fisrt gear. Do you have this problem?
>
> Early Spits did not have synchros for first gear. Later models did. I
> *think* starting with the Mk III they had synchros, but I'm not entirely
> sure where the changeover point is.
>
> >I also had touble starting it after I just shut it off. It seemed to be
> >flooring. I opened up the back carb (lifted the carb piston) and started it
> >successfully. This happened again and again
>
> By mentioning the back carb piston and synchro problems in the
> transmission, I'd have to say you have an early Spitfire, Mk I-III, with a
> pair of SU carbs. Lifting the piston enrichens the air/fuel mixture if the
> fuel jet assembly is stuck in the up position. Check the fuel jet and the
> linkage keep it in sync with the front carb. Both should be free to move
> up and down with the choke cable. They are fairly infamous for sticking in
> the high position which would be fine for most running, but can play havoc
> with mixtures. A good disassembly and cleaning of the carbs fixes most of
> those problems.
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