Quote:
Originally Posted by pelican
i think you might wanna check that cooling system again - i don't think merc manifolds are freshwater cooled.
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I think the closed cooled models may have been available with cold manifolds or warm manifolds in different years. Check out the back of Mercruiser MPI Service Manual #31, you'll find water flow diagrams for engines with the manifolds cooled by the closed system. I vaguely remember verifying mine was piped like that, but I haven't looked in a while. It's sitting in my shop covered with a tarp.
Quote:
Originally Posted by pelican
those MPI'S with the horizon package - like the one you have,is it new as in 2011 ? if so,it would be equipped with catalytic converters - to pass the emissions standard ...your engine cat equipped ?
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Mine is a post-Horizon, Seacore model but not a 2011. I bought it last year. No Cadillac converter.
Quote:
Originally Posted by oldfielder
That's a sweet setup. I'm jealous.
It seems like the only issue you will have will be keeping an eye on the risers.
Does that motor turn 325 horses?
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Nope, just 300 ponies. I think the only 5.7 engines direct from Mercruiser turning 325 HP are carbureted. I was considering one of those strokers like Island Trader got, but couldn't find one with closed cooling.
Dave