70hp carbs on a 60hp Rude

[retiredfornow]

I have a 1988 E60TLCCR 60 hp. I have access to 70hp carbs off a 1987 Rude. The intake manifold and reeds carry the same part #'s, as does the crank. The only difference I can find is the 70hp pistons are 3.188 dia. while the 60hp is 3.000.
Will the 70 carbs work and basically turn my 60 into a 70hp? Will the stock 70hp main jets work?
The 60 runs great after a rebuild, and I guess I'm bored and want something to fiddle with.
Happy Easter, everyone!

 

[tx1961whaler]

Re: 70hp carbs on a 60hp Rude

If it has different pistons, then I doubt you'd get 70hp out of the 60 with just a carb change.
You can try, though. What could happen? I fit runs like crap then you just put the other carbs back on.

 

[WernerF]

Re: 70hp carbs on a 60hp Rude

As far as I know the pistons are the same for the 1988 60hp and 70hp (dia 3.187"). Only the carburetors are different. Look here:
http://www.iboats.com/Johnson-Inline-Pistons/dm/*******.720390258--session_id.662172187--view_id.369306