Quote:
Originally Posted by Step Up
So I have this 1974 20 foot Sceptre it has the original 6 in it. I want this boat for a run about only. So I was thinking pull the 6 and go 5.7 or 5.0 but then I was thinking why. I am not building a race boat. But I would like to spruce it up the 6 a bit. Have any of you beefed up a 6 before? As well any one know the average WOT of a 20 I/o with the 6
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no need to "beef" anything up
an inline 6 cylinder will NEVER wear out - no torsional vibration
lots of torque
but.....
smart play :
try and find a used 4.3v6 with a newer alpha gen II drive and transom plate - the space available in the motor box will be nice and parts are readily available for those 4.3's
way too many variables in an old power set up that's been sitting for years - read that as $
no need for 5.0 0r 5.7 motors in that rig...lots of big boats just sitting around - lower end "cock tail cruisers",like maxxum's,bayliners.rinkers - that were powered by 4.3 merc's - you can often pick these "donors" up for pennies
often times,these "cruisers" were fitted with the more desirable "bravo" drives - usually the bravo II drives - these drives are pretty much bulletproof....
might be a good avenue for you to explore....