KEVIN D TOBIN
Member
- Jun 12, 2018
- 69
- Boat Info
- 1993 290 sundancer, 7.4L mercruiser repower 2018
- Engines
- 7.4L Bravo ll drive
I have a problem, I have a Mercruiser (this is a reman LONG BLK. with only one hour)(serial#0F021366) 1993 7.4L gen-v block and head (casting #10114182 is the block and #10114156 is the head) so I would say these are a matching set right ? Well, the water ports don't match and the gasket choice is even more confusing. But I think I have a grasp on it now, took alot of research thou, but I finally found the article that explains it. The water flow changed from mark-4 to gen-v, and although the ports don't match up here is the jist of it. On the gen-v although there is one hole at the front of the block that matches up with the head, it gets blocked off, the coolant comes up thru the block in between the cylinders and at the end it blocks off one and comes thru one, that is on a felpro #17042, this is the gasket that was on the engine when I took it apart.
Has anyone gone this deep into an engine before ? And do you think I am doing this correctly? I had the heads sent to a machine shop and they checked out ok. I plan on putting the heads and intake on and then pressure testing the water side with about 20 lbs. of air. Now the ? of sealants, all the head bolts go into the water jacket, manual #16 says to use perfect seal, when I took the head bolts out the threads were soaked, and what to use under the head of the bolt ? Should you or shouldn't you put sealant around each water passage ? Then there's the ? of the intake, should I plug the heat cross over (I have a electric choke) Should you use sealant on the water ports ? Seems like the more I look for answers the more confusing it gets. Well any help on this matter would be greatly appreciated, Thank You, Kevin
Has anyone gone this deep into an engine before ? And do you think I am doing this correctly? I had the heads sent to a machine shop and they checked out ok. I plan on putting the heads and intake on and then pressure testing the water side with about 20 lbs. of air. Now the ? of sealants, all the head bolts go into the water jacket, manual #16 says to use perfect seal, when I took the head bolts out the threads were soaked, and what to use under the head of the bolt ? Should you or shouldn't you put sealant around each water passage ? Then there's the ? of the intake, should I plug the heat cross over (I have a electric choke) Should you use sealant on the water ports ? Seems like the more I look for answers the more confusing it gets. Well any help on this matter would be greatly appreciated, Thank You, Kevin