Very nice boat!
Thanks!
What make/brand are the crank, pistons, rocker arms, and turbo?
The long block was in a boat I bought and ran well with an 8-71 on it. I took the engine apart and to an engine shop to have it checked out. Crank is an aftermarket 4340 crank but no ID markings the machinest could identify it by. The pistons are forged flat tops with one valve relief. Rocker arms are Crane 1.7 and the turbo is a Garrett TV8101. Everything looked good at the machine shop so I put Clevite H-bearings back in it and called it a day. I have pix of the crank, bottom end, deck surface, etc.
What connecting rods are in the engine?
7/16" GM
What is the compression ratio?
Do you happen to have the part# of the cam?
Comp hyd 284/305 adv, 240/253 @ .050, .575/.595 lift, 113 lobe sep, 108 intake centerline
I see the valve covers have the merCruiser logo on them, any history behind this?
Came with the engine originally and matched this boat so I left them on.
What impeller is in the pump & what is the max rpm?
Not sure of the impeller size and haven't/won't got WOT on it. The impeller is aluminum and WOT should break it. It will need bronze or stainless.
Do you have the dyno sheet (not the graph) available to post?
I will have to go look for it.
And lastly...Is the exhaust stainless steel or mild steel?
Exhaust is ceramic coated mild steel and is a dry exhaust, NOT wet. It also has a wideband sensor with the gage up front.
Thanks,
-Seth-
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