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Spitfire Spitfire 1500 1-Z-S to 2-SU's ...some issues...

Re: Z-S to SU conversion... some issues...

Yep. That's the choke info I have. Seems pretty reasonable.

The Z-S and ugly, old exhaust manifold are back on the engine. I finished up around 11pm last night and planning to fire him up when I get home from work this afternoon. although I think I'll do a little more cleaning on the choke before getting it filled with water. Regarding the vacuum ports, is there any risk in blowing some air through there to make sure they're clear?

As I think about this more, I think I'll get the linkage sorted and see how it runs before jumping into swapping needles. I can't imagine the acceleration being all that great when planting one's foot to the floor only equals 1/2 throttle at the carb... I think "fundamental operation issues" need to be address before "tuning issues". With the linkage operating correctly, the car might run on the current needles, but I'm pretty darned sure the needles won't make a bit of difference with the throttle plates only opening to 50%. I'll definitely seek out QM on Friday.

I'm planning to bring the carbs as well... so everyone can heckle me... Hey... maybe I'll bring the header as well and we can do the conversion on the show field...
:lol:

Re: bumpers. We're looking for a decent chrom front bumper for a RB to chrome conversion... of course, I understand this is not a "simple" swap either. We have a decent rear bumper.
 
Re: Z-S to SU conversion... some issues...

IanF said:
is there any risk in blowing some air through there to make sure they're clear?

I use carb cleaner (any can with the little red spray tube nozzle) I like to do it with the top unbolted and the diaphragm removed to avoid chemical damage to the rubber.
 
Re: Z-S to SU conversion... some issues...

Despite all odds, Baldrick (and the Volvo) are now in Carlisle.

Unfortunately, it looks like a HUGE storm is rolling our way for tomorrow. :cryin:
 
Re: Z-S to SU conversion... some issues...

IanF said:
Carlisle.... it looks like a HUGE storm is rolling our way for tomorrow. :cryin:

Some things never change...
 
Re: Z-S to SU conversion... some issues...

My trip to Carlisle proved fruitful, if a bit wet.

I found a different carb linkage that I'm hoping with pull the throttle plates properly as well as a couple of PCV valves... all for $10. The valves are of unknown condition - hence why I bought 2 of them, but I'm hoping one of them will work.

We also picked up a freshly rebuilt differential for the Spitfire from Quantum Mechanics. SOMETHING back there is making a crap-load of noise... it's either the diff or the hub bearings... and well... the diff is a little easier to swap out.

I'm hoping to start playing with the SU's again tonight and hopefully have them back on the car again by the w/e.
 
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