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Triumph Spitfire - Converting to single carb

Hi,

I was wondering if anyone knows of a suitable manifold to convert
a 1500 engine to a single SU carb, prefferably an 1 3/4 HIF.

Any info would be gratefully recieved.
Simon simon_clemow@iname.com

My first thought is why on earth you would want to do such a thing?
scashmore@mindport.com Stuart Cashmore

Yes, this conversion IS possible. The 1500 Spitfire shares its engine with the 1500 Dolly, so you should be able to source a suitable inlet manifold reasonably easily.

Unfortunately I do not have handy the specs for the Dolly manifold or the 1 3/4" HIF carb, but I rather suspect that the Dolly manifold will have insufficient bore to be directly useful to you. It makes sense to check. If not, then the alternative is to have a custom manifold cast- then you can design a volumetrically more efficient manifold to fit under the bonnet.

As to why one would want to convert:
1. better fuel economy
2. better low rpm engine torque, for only a small reduction in top end power.

My personal preference would be for an after market fuel injection system, but that's another story!

Rob
Mk3 Spit
Rob

This thread was discussed between 24/03/1999 and 06/07/1999

Triumph Spitfire index

This thread is from the archive. The Live Triumph Spitfire BBS is active now.