Dr.Ben
New Member
I have a question please.
From all I have read, the classic HS carb is a bowl affair. My particular variant of this engine uses a primer bulb carb and and has a shroud that completely covers the cylinder head. This issue is that I had intended to fit a bit larger bore carb to improve performance a bit, but I do not see how this is possible with this arrangement because the stock carb has a much narrow bolt spacing. The intake manifold plugs into the intake casting on the crankcase and is sealed by what I presume are Viton orings. Do other HS engines simply use a different manifold to accommodate the wider bolt spacing of the bowl carbs, or do those carbs actually screw up to the block itself? I am also not seeing how a performance gain is to be had with the larger carb if its bore is larger than the hole in the intake's casting.
Educate me please or if this has been covered in a thread I missed, please refer me there.
Thanks,
Ben Minor
From all I have read, the classic HS carb is a bowl affair. My particular variant of this engine uses a primer bulb carb and and has a shroud that completely covers the cylinder head. This issue is that I had intended to fit a bit larger bore carb to improve performance a bit, but I do not see how this is possible with this arrangement because the stock carb has a much narrow bolt spacing. The intake manifold plugs into the intake casting on the crankcase and is sealed by what I presume are Viton orings. Do other HS engines simply use a different manifold to accommodate the wider bolt spacing of the bowl carbs, or do those carbs actually screw up to the block itself? I am also not seeing how a performance gain is to be had with the larger carb if its bore is larger than the hole in the intake's casting.
Educate me please or if this has been covered in a thread I missed, please refer me there.
Thanks,
Ben Minor