check out this wacky mercruiser manifold (pic)

MikeRenz

not stock
e1_1.JPG


4.3 v6, so i assume it'd bolt up. I'll like to see the outlet port of that. Get 2 of em look like it'd make it pretty simple to twin turbo.

:tup: or :tdown: ?
 

bigtime

Sy-Ty Builder
Actual water from a special thermostat housing. Sooooooo you will need a very very large water tank in your truck and then your gonna piss a lot of people off as you are spraying water out of your exhaust!
 

MikeRenz

not stock
any reason the ports couldn't just be capped off/welded shut?

I wish i had one of these in front of me to look at.
 

bigtime

Sy-Ty Builder
see that square gasket in your pic? the rectangle slots are where the water goes thru tio the turn out to keep it from overheating in the engine bay. On the other side of that manifold there is a fitting that gets the water from the special thermostat housing. The water pump in those engines is supplied water from sea pump.
 

bigtime

Sy-Ty Builder
....and it will never clear the steering shaft or AC box!
if you blocked off the ports the manifold would probably get hotter than if you left them open to atmosphere.
 

Captain Morgan

Moderated User
yeah, the marine motors are aftercooled with its own cooling system and keelcoolers which work similar to radiators, however they are just long tubes and the heat gets transfer into the water the boat is sitting in. I can probably get a ton of those stupid things. I have a set for a big block chevy :lol:
 

bigtime

Sy-Ty Builder
sure, regular manifolds see the air right away. the inside of this would get hot as fresh air could not surround it.
 

MikeRenz

not stock
hmm....so i wonder what would happen if you went w/ a FMIC and then used the stock cche/pump to cycle water through those manifolds.
 

bigtime

Sy-Ty Builder
MikeRenz said:
hmm....so i wonder what would happen if you went w/ a FMIC and then used the stock cche/pump to cycle water through those manifolds.

Are yuo trying to give me a headache on purpose?
 

MikeRenz

not stock
bigtime said:
MikeRenz said:
hmm....so i wonder what would happen if you went w/ a FMIC and then used the stock cche/pump to cycle water through those manifolds.

Are yuo trying to give me a headache on purpose?
:lol:
just trying to talk about something new/different around here. :p
 

tytom

Donating Member
My boat has this engine. Them things are huge. However, for boats, they have special turbos with water cooled turbine housings that bolt right on top of those manifolds. Twin turbo 4.3 in a boat...totally bolt on stuff...that would be nice, and its not that hard, but pretty expensive I think...
 
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