Flathead Questions?

[FlatAddict]

1. Will a dual carb 255 Merc Flathead run on 6 volt? or at least fire or sputter?

2. Will a dual carbed 255 Merc Flathead running 6 volt produce a low compression number?

[my4dv8]

1. yes it will run on 6v. Though why not upgrade to 12v and put in a decent high output 12v coil to give you better fire in the hole.
2. 6v will not affect compression at all, though 12v will give better starting .

If you want 6v carry on as is.

[ford1]

the trick with 6v is grounds, lots of good clean grounds with a heavy battery cable, not the 12v thin kind, from batt to engine, from engine to frame, from engine to fire wall, and a good heavy wire from engine to a clean starter bolt, try not to use an exhaust manafold bolt as a ground , heat is the enemy of electricity, the hotter it is the less juice will flow

[Ol' Ron]

Your bigest problem is the distributor, the stock distributor doesn't work well with dual carbs.

[Mike51Merc]

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1. No
2. No

Neither question has anything to do with voltage.