Dual HS4s on a hybrid 1/2 prep triumph 1500 Spitfire

[Neil Verity]

OK... can someone confirm my thinking......

Level 1/2 hybrid prep car... level 2 driveline prep..

on the spec line it says...."Carburetion".... no other details given... I read this as no fuel injection...

on the next spec line it says...1500- alternate intake manifold- Pierce #J15-1952 allowed. I assume so you can run a down draft WGV weber or alternative as mentioned under level 2 prep rules

From level 2 prep rules ...The number of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. Also would require a different manifold found on EU spitfires. No specification on spec line

Since US 1500 spitfires only came with a single stromberg,,, I therefore can not use dual HS4s.... unless there is some loop hole somewhere (back-dating, EU cars (had dual HS4s), 1500 motor in midgets?)

Thus... buy a Weber, a Pierce manifold and enjoy it... Correct? Am I missing anything?

Neil

#83 HP MGB

 

[Al Seim]

"Back in the day" the 1500 Spitfires ran the single sidedraft 1.5" Stromberg and made competitive power with the 1296 dual SUs.

I have no idea whether the downdraft Pierce setup is better or worse than the single sidedraft factory setup, but agree that the 1500 cannot run the dual HS4s.

 

[kruck]

I'm about 90% certain that Steve's 1500 Spitfire(s) always had just the single SU on it. Reach out to him and ask.

 

[Greg Gauper]

Steve is running the Weber on the Pierce manifold.

 

[kruck]

I'm about 90% certain that Steve's 1500 Spitfire(s) always had just the single SU on it.

Steve is running the Weber on the Pierce manifold.

This is why I don't gamble.