[Question] 73 Eliminator Day Cruiser with BBF 460ci snails and logs getting really hot on hose
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73 Eliminator Day Cruiser with BBF 460ci snails and logs getting really hot on hose

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    Cool 73 Eliminator Day Cruiser with BBF 460ci snails and logs getting really hot on hose

    Hello,
    I recently acquired a pretty sweet little ride in a 73 Eliminator with the BBF Harden Marine 460ci. Starts up and runs awesome but I am having an issue with the Logs and Snails getting real hot (Can keep my finger on them for roughly a second before burns) while running on the hose. I have the set-up with the valve that will open and close to restrict water from the pump and attached to that is a garden hose type connections to turn open in order to flush the system. It has no leaks and when I turn the garden hose on (after the engine is started), it runs smoothly out of the back of the Berkeley jet drive, but the logs and snails seem to get extremely hot in roughly 3-4 minutes of idling. Have not water tested yet as this worries me already of getting stranded and I would rather fix prior to water testing if an issue seemed to arise. I don't feel there is any restrictions in the hoses but will double check all of those tonight by running water through them. I will also take out the manifold drain plugs tonight to see if maybe there is some sand in the block. Other than that, what else should I be looking for? Thanks for any and all help.

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  3. #2
    Senior Member ol guy's Avatar
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    Quote Originally Posted by rh242603 View Post
    Hello,
    I recently acquired a pretty sweet little ride in a 73 Eliminator with the BBF Harden Marine 460ci. Starts up and runs awesome but I am having an issue with the Logs and Snails getting real hot (Can keep my finger on them for roughly a second before burns) while running on the hose. I have the set-up with the valve that will open and close to restrict water from the pump and attached to that is a garden hose type connections to turn open in order to flush the system. It has no leaks and when I turn the garden hose on (after the engine is started), it runs smoothly out of the back of the Berkeley jet drive, but the logs and snails seem to get extremely hot in roughly 3-4 minutes of idling. Have not water tested yet as this worries me already of getting stranded and I would rather fix prior to water testing if an issue seemed to arise. I don't feel there is any restrictions in the hoses but will double check all of those tonight by running water through them. I will also take out the manifold drain plugs tonight to see if maybe there is some sand in the block. Other than that, what else should I be looking for? Thanks for any and all help.
    A shot of how it is plumbed would help. sand packing is a deffinate possibility as is the valve coming out of the pump. I have seen blocks so full of sand you had a hard time pulling the freeze plugs on a rebuild. If the engine is plumbed logs to block a good sand pack could restrict water from leaving the logs and vice versa. plumbing pics will tell the story. I would also like to see a pick of the boat as I had an early eliminator 21 cruiser here in so cal. Mark

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    Senior Member jetjunky's Avatar
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    So you have a "T" in the line at the water supply line between the pump and the motor and that's where you are attaching your water supply hose line? Have you disconnected that line and connected the water supply hose directly to the motor supply line only, to see what happens? Does water run out the exhaust tips only then? It should with low pressure from the hose once the block/system is full.

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    Senior Member andyc's Avatar
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    Default diagram

    This may help
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    Sorry for getting back late Gents, I am military and was away at training. So I do not have a "T" on mine, but it looks like I have the edelbrock performer manifold that has a thermostat housing that has been blocked off and has 2 lines running from it to the logs. I also have an engine block off plate at the front of the engine with what looks to be 1 hose running that I am pretty sure connects with the pump. The logs have 2 lines running from them, one to the block off plate/t-stat housing, and the other to what looks to be the backside of the snails. I will work on better pics this evening as I want to ensure my plumbing is set up correctly.
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  8. #6
    tintingsandiego krusn56's Avatar
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    Looks like you have the better log... through bolt. If you have a gate valve at pump, run it all the way open all the time on a BBF. The pic to route water flow is a great reference check. But basically you have a water outlet at pump ( gate valve) to T SPLIT, then each line running to front of log, then out of log to the block off plate, then from manifold to snail... done.
    Last edited by krusn56; 02-03-2016 at 07:13 AM.
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    Senior Member BGMAN's Avatar
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    Pull the water lines off the logs and see if you can blow compressed air through them freely. That should tell you if you have blockage in there. If all seems good, start pulling other hoses off 1 at a time and see if you find blockage.

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    Found the culprit, pulled every line and ran water through them. All were good until I got to the block off plate. Both were clogged with a white gooey substance that I suspect to be salt deposits. Ended up breaking off one of the bolts on the front of the block off plates when trying to remove it to clean it out, the salt must have ate through the aluminum because as I was loosening it, it just basically fell out. New block off plate is on order but for now, I JB Welded the elbow back on and put some water proof silicone around it as a temporary fix just to get some cool water running through the engine for a good clean out and to ensure all the lines are now unclogged. Definitely a temporary fix and will probably do some small putting around the bay with it but nothing wide open yet until I get the new block off plate. Thanks for all the help and info Gents

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    Senior Member jetboatperformance's Avatar
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    Considering the problems you have been experiencing, you may want to use a bright flash lite to look at the inside surface of the large Exaust hoses between tips and rizers , although they may appear OK for the inside , lack of water supply can cause them to blister and burn from the inside out ....

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    I plan to replace all of the lines but thanks. I will run it no more than 20-30 minutes before I install all new lines and block off plate

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by rh242603 View Post
    I plan to replace all of the lines but thanks. I will run it no more than 20-30 minutes before I install all new lines and block off plate
    just to be clear not refering the water hoses but the large "boots" that go between the rizers and exaust tips

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    Got it, thanks, I will check them tonight with a flash light and if they look bubbled, I will replace. Thank you for the tip. Other than a new block off plate, I should be ready to hit the water

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    So far it seems my temporary jb weld fix is holding up. Started her up and ran her on the hose for around 10 minutes and temp gauge was reading around 140 and she was spitting pretty good out both exhausts. Logs were still pretty hot but I'm guessing they will be either way. Snails were around the same temp as the logs. Tomorrow is the maiden voyage for the day cruiser and I hope all goes well. Won't go full throttle just yet but will put around the bay. I will make sure the gate valve is open all the way as well. Will let you all know how it goes

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    all went pretty well today on the water. took her out for around an hour, putting around she stayed at 140 and I took her WOT for a minute or two and she snuck up to around 150 but no higher, seemed to run great. My only concern now is I think one of the tappets might need tightened as I get a little tick from under the cover. I dont beleive its anything alarming as the engine runs strong, probably just an adjustment. All seems to be running fine out of both exhausts now.

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