Any Downsides To Downturns ?
#1
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Any Downsides To Downturns ?
i'M TRYING TO FIND OUT IF ANYONE HAD THE TROUBLE AND WHAT CAN BE DONE ABOUT WATER SUCKING UP DOWNTURNS FROM VALVE SPRING FAILURE (OR ANY OTHER MAILFUCTIONS FOR THAT MATTER) .
i GOT WATER USING THEM WITH A DRY CMI E-TOP SYSTEM .
THEY REALLY QUIET BOAT AT IDLE AND REDUCED SOME COCKPIT NOISE ON PLANE , i DIDN'T GET ANY POWER LOSSES . BUT SOME MODIFICATION NEEDS TO BE MADE TO PREVENT SUCTION DURING ADVERSE
ENGINE CONDITIONS , OTHERWISE I 'M SCARED TO REPLACE
THEM ( LAW ENFORCEMENT TICKET WAY LESS THEN ENGINE BUILDER TICKET !) CAN ANYONE HELP
THANKS AND BEWARE
i GOT WATER USING THEM WITH A DRY CMI E-TOP SYSTEM .
THEY REALLY QUIET BOAT AT IDLE AND REDUCED SOME COCKPIT NOISE ON PLANE , i DIDN'T GET ANY POWER LOSSES . BUT SOME MODIFICATION NEEDS TO BE MADE TO PREVENT SUCTION DURING ADVERSE
ENGINE CONDITIONS , OTHERWISE I 'M SCARED TO REPLACE
THEM ( LAW ENFORCEMENT TICKET WAY LESS THEN ENGINE BUILDER TICKET !) CAN ANYONE HELP
THANKS AND BEWARE
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the small holes come drilled from the factory on my gibson pipes . the problem came from defective valve springs
in one of my motors . I belive that without the downturns
no water could come to heads with dry exhust alone .
Howard
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I was wondering if holes would work on a fountain given the fact the stock exhaust exit with 1/4 of an inch submerged. Nauti how big are the holes in your exhaust and what kind of motors and exhaust are you running?
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Just to be clear the pipes worked great ,BUT when you motor
malfuctions look out ! the water could be coming in your engine like you have thru prop exhust .
Still waiting to hear from gibson about this
#9
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I've never used them but I like the concept. My only issue would be if you don't have a secondary water dump or water pressure guages, how do you know your circulating water properly? I always start the boat, watch for oil pressure and then head to the swim platform to watch for water out the exhaust. I can also get a good feel for when I have an impeller starting to go bad by the time it takes to get water and the volume of water by watching the exhaust.
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