Hey guys, It's been a while since I did anything with my jet boat.. I went to go out on it and come to find out my water jacked headers exhaust had a leak on 2 of the tubes. The water down here just eats this shit up. Since I don't have the money to go with a SS exhaust setup at this time I was looking to change my exhaust to the mercury/gill exhaust set up.
My question is will I have any water reversion problems with this set up with my cam which is in there now. Here is the spec on my cam. Solid tappet. .615 lift intake .626 lift exhaust. Duration is 249 @.05 intake 254@.05 exhaust. The lobe separation is 110 with a 106 centerline. When I built this motor with this cam I was told I would need to use over the transum headers or Water jacked thru transum exhaust
From what I have found out is when using the log style exhaust is to keep the duration at or below 230. Should a stay with this with spec. with the center riser mercury/gil exhaust set up also.