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  1. S

    mercruiser 4.3 thermostat housing

    The one that i'm repearing now is not efi (efi is my old one and the one where i took the thermostat). The one that i'm rebuilding is a 4.3 lx 1996 , on head is mentioned vortec, it has the shaft balancer but i think is actually what you call prevortec. My head is the 181 (final) my intake...
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    mercruiser 4.3 thermostat housing

    thanks. temperature here is almost same in summer. i had a weber 4 barel carburator with spring. ( i sow that maybe is possible to use an electronic choke as optional but i'm not sure, and at the moment it is with thermostatic spring ( and i think i will leave the thermostatic spring) so is...
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    mercruiser 4.3 thermostat housing

    Thank so much. So in my case that i normally use boat in summer, maybe is better to keep it on, avoiding extra hot in intake manifold. What do you think?
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    mercruiser 4.3 thermostat housing

    Yea it seams to be gas in that holes. This are the gasket, cheking online they are maine
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    mercruiser 4.3 thermostat housing

    it should be. i the garage where they did the machining of the head and cilinder they bought all the set. actually here in italy this motor is not common for car because we don't use such engine like in USA so it is more common i think to find the marine one than car oune. tomorow i also check...
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    mercruiser 4.3 thermostat housing

    thanks so much. so should i keep it on ? or better should i install it? thanks again
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    mercruiser 4.3 thermostat housing

    thanks, when you said worm you mean vesion with 4 pipes only right? whater here in italy dusring summer is between 28-32 degrease, the issue is on the ports when i go back that last area is a river so i have 19- 20 degrease celsius i think my first motor ( omc had this system but i used it for...
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    mercruiser 4.3 thermostat housing

    sorry for delay in reply yesterday i was all day in the motor trying to find all components and location for all components that i bought i a box :) this is the picture of the gasket with this metal part in the position where it should go ( is th only place with that shape so i presume the place...
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    mercruiser 4.3 thermostat housing

    tks; that gasket are the gasket between heads and intake manifold. in the pack i had this 2 metal restrictions but in the efi if i remember wel it was not any restriction. ( this LX was not mine and i bought already disassembled so i don't know haw it was.
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    mercruiser 4.3 thermostat housing

    thanks so much. i was wander if in EFI model some of the water was going thruought the manifold as well. thanks
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    mercruiser 4.3 thermostat housing

    thanks, this is the one that i was noramally using in EFI model right? at least they seams the same of the one that i norlammy used. what about this component that i never sow on EFI model, shuold i use it (it is a metal resteiction) or should i leve it without it ? thanks
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    mercruiser 4.3 thermostat housing

    thanks a lot. if i understud well, on lx there are 2 ppe that goes on riser and the purpose is discharge the cold water? instead in the EFI model it will discharge only when thermostat open? there is any other modify that i need to do? or just pump, pipe riser for EFI? thanks a lot
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    mercruiser 4.3 thermostat housing

    hi; thanks a lot. for the components i will buy for sure new riser, and probabilly also new manifoold. so i think i will use EFI model with tap on them
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    mercruiser 4.3 thermostat housing

    good morning to everyone, i'm new in the forum. and thanks to have me accepted. i have one querry for you all, ( i sow similar thread but it was not possible to reply there) i'm rebuilding one mercruiser 4.3 LX motor to be installed istead of mine old 4.3 EFI motor. ( so i still have a lot of...
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