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Old 10-12-2016, 12:10 AM   #11
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The end caps might have the manufacture cast into them. One of mine is like that. The brass end caps say Lenco, which is the company that made it.


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Old 10-12-2016, 12:34 AM   #12
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Some pics might help me identify the manufacture.

What is the temp of the hoses going to the bottom of the manifolds?
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Old 10-12-2016, 03:32 AM   #13
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Hi All
I will look next week and try to get pics and send them.
Lots of things happening this weekend, so will have to wait until Monday or Tuesday to look and see what I see!
Thanks Speedy nad Mike!
Don
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Old 10-22-2016, 03:12 PM   #14
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OK! I am back!
Sorry to take so long to reply, we had a hell of a storm here!
OK a little history on the boat!
It's a 1995 2400SCR with a 5.7 half cooling system Alpha 1 Gen 2 drive.
I bought the boat and trailer mid summer and had it all cked out prior to purchase,
everything cked OK only a few miner problems so OK there.
I was not able to see boat before purchase or water test it as it was in another state!
First probem occured when the transport driver delivered the boat, NO Brakes on trailer!!! Long story short That has been repaired!
Now as the temps are dropping here (mid to low 30s) so I drained the raw water from the engine and got a good amount out of the port side manifold, not so much from starboard side!
Pulled the plug on HE and no water!!
So my added questions!
1/ Could the water drain back out of the system while on a trailer? ( Drive in full down postion!)
2/ I have not had the boat in the water as the trailer repair took longer than I expected, only have ran boat on muffs. Could it be running warm because of that? We only have about 25 psi water pressure at the house!
3/ Could it have a bad lower unit water pump impeller and the low water pressure at the house be part or all of the cooling problem?
It was supposed to have a new impeller in the drive!
Sorry this has drawn out so long but we live in the middle of desaster area here, my priorities have been devided
Thanks to all for helping !
Sorry tried to post pics but all my pics are to large to upload!
Thanks!
Don
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Old 10-22-2016, 03:38 PM   #15
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When you drained the exhaust the plug is lower than the HE so it drained down as well. I do not think the water pressure at the house is an issue as when the boat is sitting in water no pressure is applied at rest so as long as you are only running at idle no overheating should occur.

You can remove the raw water hose going to the HE from the transom assy to see how much water flow there is. If I recall the engine temp was ok it was just the exhaust components that are hot. I would focus on the exhaust water flow.
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Old 10-22-2016, 04:29 PM   #16
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Hi Mike!
I did not find a plug in the elbows so I pulled the hoses of of the manifolds!
I was not able to remove the hose from the P.S. cooler as it is behind a motor mount! 2400 SCR's have a very tight engine bay! ( As there is no room there!)
Other than it running at what they say is to hot for the elbows it runs just fine! Starts a little hard the fist time after sitting for several days.
Boat had new or rebuilt engine installed in 2000, only thing I can find on the engine problem was that it would not start, no other diag. They just replaced engine and it was covered by an extended Warr.
Clock shows 300 HRS.!
I am the third owner so don't think I can get muck more info on it!
Thanks to all!
Don
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1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
1976 16ft. Tahiti 2.5 IO (sold)
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Old 10-22-2016, 10:44 PM   #17
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300 hours on the endings sine 2000 is less that 20 per year which is below the norm. Sounds like a clean enough boat for her age. I have a 1997 2400 SCR so I understand how tight things can be in the engine compartment. Open but you need to bend 180 over to reach anything.

Pulling the hose will do the job for the manifolds.
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Old 10-23-2016, 01:12 AM   #18
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Hi Mike!
Bend over 180 Deg?
If I do that at my age I would need 911 on speed dial! I would be there until they cut the deck out above me!
I was thinking of just cutting the hose before the P.S. cooler and putting a pipe in with a drain valve for ease of future draining! Probably wont get all of the water out but it would be better then being trapped in the bilge until I die!
Tanks Again for all the help!
Don
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1995 Maxum 2400 SCR 5.7 A1 G2 LUNA DE MIEL
1988 Bayliner 2455 5.0 IO (sold)
1987 Seaswerl 18ft C. Cabin 4.3 IO(lost in fire)
1976 16ft. Tahiti 2.5 IO (sold)
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Old 10-23-2016, 02:58 AM   #19
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Hey Don tell me about it, I have a ruptured disk so working in the engine compartment can be rather painful.
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Old 10-23-2016, 05:15 AM   #20
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Hi Mike!
I know what you are sating I have 3 bulging disks and 2 bad knees!
The golden years are great!!!!!
Don
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