you post your name to try and suck people in. I notice you ignored 2 of your most notible MARINE failures in your reply

check out the guy he hired to build engines. If he really made the bogus numbers that he claimed, he would be the head engine builder for every Cup and NHRA team.

I google earthed his business addy and got a couple acres of trees.

So, you finally agree the below cam you sold Adam for a 496 with stock type exhaust sucked water ? You only let him build the engine a THIRD TIME.....and then we, not you, pushed you two to install a Crane 731 derivative which got him back on the water and actually using the boat instead of breaking the motor.

Your cam choice - was in his two first motors that failed right off the bat.
Intakeº / Exhaustº
duration at .006" 291º / 309º
duration at .050" 238º / 250º
duration at .200" 158º / 163º
Intake Centerline (ICL)112º
Exhaust Centerline (ECL)112º
Lobe Seperation Angle (LSA) 112º
Overlap at .006" = 76º (for reference Crane '731 has 60º / Crane '741 has 68º overlap at .006" )
Overlap at .050"= 20º

Scott,
The risers on the engine were found to be bad also. The engine failed in the first place, the reason for the rebuild because of the risers being rotted out. NOBODY has control over what happens with used wet exhaust. That cam has since been run in another marine engine and is still running today.

Just got in a set of heads off a 540 with wet exhaust. Set of AFR 325's. No signs of reversion. Engine was built in '05.

Here you go Scott. This cam in the 80's and 90's was the marine blower cam from Reed

Intake Duration - ID 300
Exhaust Duration - ED 300
Lobe Center Angle - LCA (also known as LSA) 112
Intake Centerline - ICL 111


Intake Valve opens - IVO 39
Intake Valve closes - IVC 81
Exhaust Valve Opens - EVO 83
Exhaust Valve Closes - EVC 37
Exhaust Centerline - ECL 113
Overlap 76


I was used by several with wet exhaust.

Yup, that motor you are now referencing probably has a stock type exhaust too - right ? Not. No chance with a 540 and AFR's.

Keep re-wording things. In one case it's good and in another it's bad. Whatever sounds good to you.

BTW: That cam is brutal.

With your help he broke 2 motors. With ours, he enjoyed his third. Fact.

Scott,
What you don't seem to understand is the risers were pressure fed and was leaking.

What part of stock exhaust don't you understand.

What did that 540 have ?

What where those Reed cammed engine's and what exhaust ?

You still have no clue about all the different exhausts used in I/O boats.

I/O are not jets and v drives....Totally different deal....

Keep blaming everyone for your I/O disasters. And let others fix them for you. Maybe that's why people are angry with you.

540 Had EMI Thunders

Reeds were used in the 89 to 94' era.