25-11-2018, 09:19 AM
When I was putting the special together I put a H1 (1 1/8") SU on the engine that I found on my shelves with the intention of sorting it later. I have now travelled about 500Km and it ran very strongly but for other reasons the engine is out again and as I am waiting for some parts, I thought it a good time to have a look at the SU. First off it has a damper with a weight but also has a spring also it has a 3/16" hole on the top between the Damper and the butterfly I assume for a vacuum line ...but it was running with OK apart from the plugs being very black and lastly the needle is a GG also I have now blocked the hole.
The engine is standard other than a 37 head that somewhere in the past has had about 1/16" shaved off it and a set of extractors 4 into 2 into 1
Lastly I had a 18mm bung put in the exhaust so I can put my air fuel gauge in to get it right but I do need a starting point with needle and spring or no spring recommendations.
The engine is standard other than a 37 head that somewhere in the past has had about 1/16" shaved off it and a set of extractors 4 into 2 into 1
Lastly I had a 18mm bung put in the exhaust so I can put my air fuel gauge in to get it right but I do need a starting point with needle and spring or no spring recommendations.
Cheers
Mark
Mark