Re: running on cuffs
All sizes will run on the 'muffs' of the correct design for a particular motor series.
the drawbacks are;
1 less exhaust back-pressure with the motor leg out of the water, carb idle mixture adjustments can often be less than perfect
2 'city' water pressure can mask water pump/impeller problems by 'pressurizing' the water pump
3 muffs cannot supply enough water for speeds much above an idle
Muffs are another tool in the owner/mechanic's endeavor to maintain/repair an engine, each tool has a specific perpose, the muffs are to enable us to provide cooling water in order to start and idle and engine. Period.
