British Cars with SU Carburetors are alleged to be finicky
I don't know - i went for years without touching mine until they leaked fuel and air
So I sent them out to be bushed and rebuilt them
No issues
Well then I rebuilt the engine - Yes lots of mods
Flowed Head, Manifold and Exhaust thanks to Sean Brown www.flowspeed.com
I believe I still need work on my rocker arm geometry - Winter Project or when I am bored or tomorrow
We did a lot of revised lightening/balancing of the reciprocating assembly (crank, flywheel, rods, pistons) - the engine has no issue running 5000 rpm for extended periods. 60 miles for example
But I bolted my rebuilt carbs to this new motor -
Rich - even with the jets adjusted full up (H4 Carbs)
So started on leaner needles AO in my case - the MGA lean needle
Better but not great
Asked the advice of an expert - someone who does this often
Removed the dashpots - Jets not even close to the bridge - We have a culprit
So I took out all my spare (junk) carb bodies and rebuilt the jet assemblies with parts at the lowest range of size to obtain the best result - I should have taken pictures - revised a few washer thicknesses to obtain exact match between (read sanded them on a surface plate)
Anyway - better - a little more tweaking but an overall better performance - leaner less loading on the plugs still with AO needles
I am working up to the In Car Video
I don't know - i went for years without touching mine until they leaked fuel and air
So I sent them out to be bushed and rebuilt them
No issues
Well then I rebuilt the engine - Yes lots of mods
Flowed Head, Manifold and Exhaust thanks to Sean Brown www.flowspeed.com
I believe I still need work on my rocker arm geometry - Winter Project or when I am bored or tomorrow
We did a lot of revised lightening/balancing of the reciprocating assembly (crank, flywheel, rods, pistons) - the engine has no issue running 5000 rpm for extended periods. 60 miles for example
But I bolted my rebuilt carbs to this new motor -
Rich - even with the jets adjusted full up (H4 Carbs)
So started on leaner needles AO in my case - the MGA lean needle
Better but not great
Asked the advice of an expert - someone who does this often
Removed the dashpots - Jets not even close to the bridge - We have a culprit
So I took out all my spare (junk) carb bodies and rebuilt the jet assemblies with parts at the lowest range of size to obtain the best result - I should have taken pictures - revised a few washer thicknesses to obtain exact match between (read sanded them on a surface plate)
Anyway - better - a little more tweaking but an overall better performance - leaner less loading on the plugs still with AO needles
I am working up to the In Car Video
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