1 /34 SUs

[Billy Hunt]

Just one of the many things I've considered for the B as they seem to be highly recommended.
How do you know which ones fit?

There is/was some Dolomite Sprint ones on eBay, would they fit?
Do you just swap the linkages between the two?

[miniman]

Pretty sure I've got a pair of Sprint carbs in the garage if you want them.

[Billy Hunt]

If they fit I'd definitely be interested
I'll PM you

[miniman]

99% sure they are HS6 / 1.75 - will have a look in the garage.

[wildoliver]

If anyone else has a spare set kicking around I need some too! Just got the manifold (the expensive bit) just need the carbs now.

[davepoth]

The carbs will be about right - There's nothing too special about the HS6s on a Sprint. Make sure you get the earlier ones (non-waxstat) as they will be easier to set up for the 'B and don't have so many complications.

[mgroadster]

Just as a matter of interest, what made you choose them above a nice pair of webers?

[Billy Hunt]

mgroadster said:

Just as a matter of interest, what made you choose them above a nice pair of webers?

Cost, Webers are bloody expensive

[wildoliver]

I would never choose webers on an MGB for anything other than race use where you are chasing that elusive 1 or 2 horsepower at WOT that a weber can give you over an SU. For everything else the SU is superiour especially reliability and economy throughout the rev range.

[Billy Hunt]

That is certainly true. From what I've read in most places (Including the 'How to powertune MGB 4 cylinder engines) Webers give minimal gains unless the engine is built to race spec. Although they do offer greater 'tuneability' with many more things you can adjust / swap / setup everyone says they also make a noticeable negative effect to MPG.

I'm not willing to pay £300+ to gain 1 BHP, Even if they do sound fantastic!