. I have it set for 14psi. I had one go bad before the motor get's hot quick when you are kicking most the water back over board. Block is clean as a whistle. I'm ok with the 165 but would prefer 140 and I'm re plumbing the complete boat and changed to two -8 dump line to archive this. I know must the guys I run with have one -10 dump and the seem fine. I run two gauges one in the manifold and one in the block. 


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Gonna give away a secret here..... How large is the hole in the dump fitting (thru-hull)?

12 pack?
18 pack?
30 pack?
Handle of crown?
Handle of johnny walker black?

All of the above?

So check it... Sit down and have a beer with me and lets go for a ride in the finished product.... Pretty fair right?   

GT

. I have 1/2 but -8 is only 3/8


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A single 8AN Earle's smooth liner hose is only good for about 500HP,  the outlet hole size should be greater than 3/8" so I would say swap out for a 10AN or two 8AN with 5/16" outlets. You must be close to 750-800 HP if it runs hot on 110.

Make sure there is pressure in the system. I'm liking the 14#... 

GT

A single 8AN Earle's smooth liner hose is only good for about 500HP,  the outlet hole size should be greater than 3/8" so I would say swap out for a 10AN or two 8AN with 5/16" outlets. You must be close to 750-800 HP if it runs hot on 110.

Make sure there is pressure in the system. I'm liking the 14#... 

GT

correct as always 780 hp then add a 300 shot. It will not be on the nos very often couple passes a weekend. The motor was built as a nos motor by Bostick racing so should be good. I will let you know how the two -8 work out. Thank for the conversation Glen. 👍🍻


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O

So check it... Sit down and have a beer with me and lets go for a ride in the finished product.... Pretty fair right?   

GT

Hells ya! That is beyond fair. I would say a fricking bargain.

With 210°F water at only 5 psi,  it simply cooked itself imho.

GT

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Possibly, RPMs, how long into the throttle.  Increase to 15-20 PSI water pressure may help in the future.
Maybe I missed something but what is the compression ratio, what is the total timing (is it correct) what is the max RPM and what octane fuel is he using.
HD