su carb conversion

[turoa]

Ive got me a new/old donor rangie for parts so I can get my other one back on the road.

The motor did startup withstart ya bastard when we were viewing it (after sitting for 2+ years), and after cleaning out the fuel and pumping the old stuff out (was red), and a quick tug it fired up. The stromberg carbs werent working very well and now only one of them is actually working. It pops and farts etc.

I pulled one out and degreased etc and its definitely not working now. I dont know what the hell is wrong with it.

But there is an sd1 motor sitting on a crate outside which has su carbs on it. What would be involved in swapping the carbs over? or should I just wait until im ready to bang the motor back into the road legal one and use the sd1 motor (but change the front cover because it has a mechanical fuel pump(bit strange?)).

they are both black under the rocker covers, the RR moreso than the sd1 motor. not sludge, but a little bit black.

[91Rangie]

The throttle linkages are different.
Just put a set on after taking the harcourt 4bbl manifold off on my white rangie you took for a spin
I think the throttle cable to the carb end is different to

[matwelli]

Have you checked the dash pot in the stromberg has oil ?

The strombies and SU's need the right grade of oil in the dashpot (very light weight) do a web search or down to the library.

The strombies are a technically more involved version of the su's but from experiance hold their tune better. I have not played with teh ones on the rover, but have owned/worked on old english shit in my time (we even put a 2" SU on a turbo 12A rotary !)

[Goose]

The other option is to mill the top off the manifold to make it flat, drill and tap some holes, and put a holley on it.....

Seen it done, and they go good, just make sure you have a mini tanker of gas to tow behind it