| Author |
Message |
    
perkins1990
Member
Username: perkins1990
Post Number: 5
Registered: 08-2014
| | Posted on Sunday, April 26, 2015 - 11:35 pm: | 
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new issue. 1966 flagship reverse flywheel. entire engine is running good temps except for the front of both heads. right side is warmer than left. right side got up to 250 before I turned it off. both heads and intake r not the original to this engine. I bought the boat almost 4 years ago. all back together running great except for this. this boat sat for over 15 years. I have flushed a lot of rust chunks out. I am thinking either water jackets r clogged or wrong head gaskets blocking water ports. do I just go ahead and tear intake and heads off so I know for sure or what?? thanks again for all the help on this site. has been great help. |
drrot
Senior Member
Username: drrot
Post Number: 181
Registered: 09-2008
| | Posted on Monday, April 27, 2015 - 08:50 am: |
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I'd check the water flow first. Does plenty come out the exhaust? |
perkins1990
Member
Username: perkins1990
Post Number: 6
Registered: 08-2014
| | Posted on Monday, April 27, 2015 - 09:56 am: |
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As far as I can tell plenty is coming out of the exhaust. My Impeller has eight blades I wondered if switching to 10 blades would give more water pressure? Everything else is staying cool exhaust manifolds risers the entire rest of the block is staying at operating temperature just those two spots in front of the heads is getting hot. Any ideas would be much appreciated if it helps me not to have to tear engine down |
perkins1990
Member
Username: perkins1990
Post Number: 8
Registered: 08-2014
| | Posted on Monday, April 27, 2015 - 09:28 pm: |
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U were right drrot!!! Is there a way to test the psi on the exit side of the impeller? How do I tell if the raw water pump is bad? Could a bad cover plate be bad and cause that type of problem? |
drrot
Senior Member
Username: drrot
Post Number: 182
Registered: 09-2008
| | Posted on Tuesday, April 28, 2015 - 03:43 pm: |
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Put a hose on the exit side of the pump. Fire the engine up and try to cover the end with your thumb. It should not let you and squirt all over the place. |
perkins1990
Member
Username: perkins1990
Post Number: 9
Registered: 08-2014
| | Posted on Tuesday, April 28, 2015 - 07:25 pm: |
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Put the hose to feed the engine? Leave the other hose hooked up to my raw water pump inlet? Just making sure. |
drrot
Senior Member
Username: drrot
Post Number: 183
Registered: 09-2008
| | Posted on Wednesday, April 29, 2015 - 09:15 am: |
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NO.
Never feed the engine with a hose. Either have it in the water or feed it from a bucket. |
perkins1990
Member
Username: perkins1990
Post Number: 10
Registered: 08-2014
| | Posted on Friday, May 01, 2015 - 10:29 am: |
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Should the backside of the cover plate or the end cover be perfectly smooth no grooves or where? This is on the raw water pump? I have checked and they have discontinued any parts for this pump could I just have a machine shop make a new brass plate? |
perkins1990
Member
Username: perkins1990
Post Number: 11
Registered: 08-2014
| | Posted on Friday, May 01, 2015 - 01:26 pm: |
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*wear not where. Lol |
drrot
Senior Member
Username: drrot
Post Number: 184
Registered: 09-2008
| | Posted on Saturday, May 02, 2015 - 08:19 am: |
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The smoother it is the better the water flow. Some can be flipped around. |
perkins1990
Member
Username: perkins1990
Post Number: 12
Registered: 08-2014
| | Posted on Wednesday, May 06, 2015 - 10:11 pm: |
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I will try my best to explain what I've got. I have a reverse flywheel Flagship 327. someone has taken the intake and heads and replace them with a 305 intake. If you look at the original intake manifold from the original engine the cooling ports are completely different than the 305 set up which explains the front of my motor getting hot. The original engine set up does not have a circulating pump like most engines have. My raw water pump impeller is having to push the water through everything. I am guessing the raw water pump does not have enough pressure to circulate the water strong enough to the front of the motor\heads. Since this is a reverse flywheel there is no way to hook up a standard circulating water pump. Is there anyway to hook an in-line circulating pump and its place to do the same thing? I will try and post pictures tomorrow. Thanks for any help or info or input. |
perkins1990
Member
Username: perkins1990
Post Number: 13
Registered: 08-2014
| | Posted on Wednesday, May 06, 2015 - 10:14 pm: |
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