[Spits] 79 Spitfire with SU carbs

[David Woerpel]

Thanks to all who have responded.  We've ordered some parts and made 
some calls.  Joe Curto told me that he's had a few TR's come in with 
after-market MECHANICAL pumps that are putting out too high a pressure.  
Anyone else run into that?  We'll put the old pump back on or get a good 
regulator and gauge.   The carbs are FZX 1258's which calls for a 
standard metering needle of "ABT".  Also, I hate to admit I didn't 
notice that there were no piston springs (I'm used to working on H1's 
for the Bugeye which have no springs but I should have caught that 
anyway...duh.)

Given the fact that the car is desmogged is the timing still 10* BTDC?

Neil, I'm not sure what you mean by "reversion" issues?  I shall find 
the answers to your questions.

Again thanks for the help...we'll see what Thursday brings!
Dave

Neil Penberthy wrote:
> I'd suggest checking that you have the right needle. Also you mentioned some modification to the motor - head skimming - relatively small changes to the stock set up can require non standard needles etc. The exhaust was swapped on my car and with the stock needles it would barely run.
>
> Also was the head work done at the same time as the carb install? There may be all kinds of factors in play if that is the case. Assuming that the head work is OK there can still be all kinds of unforeseen issues such as reversion issues etc.
>
> I think we need more information to really get to the bottom of you problem.
>
> Good luck!
>
> Neil