Performance Improvements possible with newer 4 stroke outboards
Up here the new generation of racers are not interested it the old school 2 stroke motors. They would like to use their lap top and reprogram their motor same as they do with their cars. They don't mine throwing lots on money into their modifications. There is a very good supply of rebuildable 4 stroke outboards on the market for them to work with. The problem is there is limited information on what can be done to improve the performance or any OEM or aftermarket parts. Maybe there is not enough market for companies to spend the R&D money necessary to develop the products. Years ago the same could be said about the small Honda cars.
To-day that is a BIG business.
We need find ways to get these new people racing. Are you seeing the same thing in your area?
Any suggestions?
Hounddog, You And I Are A Lot A Like
I spent Saturday going over spec sheets "PAWING OVER" A Mercury four stroke head. Simon Motor Sports in San Diego has figured out how to, I think the word is "Flash" the computer, so they can disconnect the revlimiter.
But the motors will still only turn 6,500 RPM's.
My "PROJECT" is "Top Secret" right now, but I will tell you there are many areas that the Mercury 40-60 four stroke can be improved.
I will be "Up Front" with you. The head looks like the flow may well be restricted on purpose. (Need to sell better running motors in the future, you know built in obsolescence).
The value springs may be too weak, and allow the values to "FLOAT".
The exhaust area of the exhaust ports appears to be "Squeezed" down, this me be for pollution reasons, or just planned horse power control.
"My People" are going to run the numbers, and figure out what the cam is and what they think the cam should be.
At this time, I have no plans to market anything for these motors. I am working as a "MIDDLE MAN" with some people than want improved performance and they have the financial backing needed for some development work.
I just wish for you guys in Canada, would look at Texas, Tri Hull's roll cages. Or go to 660 drags. Todd Bucknell's accident, last summer, was not got for boat racing!
I have no "FACTS" other than hear say, but It appears the NEW Tohatsu four stroke has some real power. I have 18 pitch props running on 30 HP Tohatsu four strokes and hitting the rev limiter.
Simon Motorsports of San Diego, California
I have heard, that Simon Motor Sports can "FLASH" the ECU on Mercury 40-60 HP. http://www.simonmotorsports.com/ I'll admit, I don't know what an ECU is. I do know what a rev limiter is.
I've talked to them on the phone, super polite and helpful, though I didn't have very clear questions.