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  1. S

    mercruiser 4.3 thermostat housing

    Perfect. Thanks
  2. S

    mercruiser 4.3 thermostat housing

    Thanks i will try the thread because i would prefere to have filter on top :)
  3. S

    mercruiser 4.3 thermostat housing

    One more things, what do you think about oil filter remote system. Could i use the efi one on mu lx? I sow that pn is different but i don't know what is the difference
  4. S

    mercruiser 4.3 thermostat housing

    Thanks so much oil sending unit you mean the one that goes here in the picture? Not even thread sealer?
  5. S

    mercruiser 4.3 thermostat housing

    Thanks . For the way how to torque i do not have doubt, cross and torque as per manual, only things not clear to me was the rtv overlap, because was not clear from manual if above gasket or beliw. Looking your nice explanarion is above (i was supposing that too) For the component i think i will...
  6. S

    mercruiser 4.3 thermostat housing

    Thanks. I won't do now but was my doubt. Now i've got head for prevortec just bought and machined. I'm just wander if i can use the valves roket but i do not think so because they have same diameter but one code 17339 length 7.192" and one 17339 1 that should be 7.182 (but i don't know why the...
  7. S

    mercruiser 4.3 thermostat housing

    No no, now i'm doing all with prevortec components because i bought head 181 final so i have to go like this. I was just wander. When you put the gasket you had only the 2 gasket for the intake i suppose and not the 2 parts that goes on the front and back part of the motor (still between intake...
  8. S

    mercruiser 4.3 thermostat housing

    But in your opinion. I i wanted to make my motor a vortec one cabs was it possible just using efi intake manifoold and heads? Now from efi i also took alternator (70 amp vs 55 lx) and starter motor
  9. S

    mercruiser 4.3 thermostat housing

    🤣 This is 1968
  10. S

    mercruiser 4.3 thermostat housing

    Thanks very nice explanation very nice to see all this information . Congratulation to you and to all here in the forum very nice
  11. S

    mercruiser 4.3 thermostat housing

    Thanks 🥰 it took me 2 years to rebuilt it totally, now i use it just with sun and for fun 😅
  12. S

    mercruiser 4.3 thermostat housing

    Thanks. I know is not vortec but i was not sue Re what was the difference because at the beginning i heard just the shaft balancer but is not true . Tks
  13. S

    mercruiser 4.3 thermostat housing

    But what is the real difference between old head and real vortec? Thanks i'm painting all components before assembling You have a good observation, yes i'm in italy and that is my baby 🥰 i rebuilt this car 12 years ago it was totally destroied now is the weekend car 🥰
  14. 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...
  15. S

    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...
  16. S

    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?
  17. S

    mercruiser 4.3 thermostat housing

    Yea it seams to be gas in that holes. This are the gasket, cheking online they are maine
  18. S

    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...
  19. S

    mercruiser 4.3 thermostat housing

    thanks so much. so should i keep it on ? or better should i install it? thanks again
  20. S

    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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