dlogvine
Master Chief Petty Officer
- Joined
- May 4, 2015
- Messages
- 839
I am assembling 1993 mercruiser 4.3 v6. I had a block with heads and to get accessories I bought an older 1986 Larsen with 4.3 v6 engine. However there are some differences. One of them is the location of the water temperature sender. On the newer engine it is in the thermostat assembly, and there are two sending units. This one 1986 engine has only one sender, and it is sitting in the intake manifold. I'll attach the pictures. My original manifold has a plug in this location and this plug is sitting very solid. I believe to remove it I'd need to heat the manifold and then use the pry bar, remove it. Also I found on the 1986 thermostat housing a hole with a plug that is similar to the hole in the thermostat housing for the temp sender. Can I put the sender into this hole or should I replace intake manifold with the one from 1986 engine. Thx