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I have read and researched and still drawing blanks.
I have an 2007 Max IV w/ 18hp Vanguard 125 hours. I have my max rpm set to about 4200rpm and try to only use up to 4000rpm. I want to upgrade to some larger tires like 27" Gators or something to gain alittle extra ground clearance. By doing this, I might like to have some more power.
What would you do if anything? Roger, I know that you will have some suggestions. I didnt want to call George Herrin and bug him yet.
I was thinking thinner head gaskets and steal intake pushrods, and double springs. I want the motor to stay in one piece with higher rpm's between 4000 to 4500.
You might even recommend a different clutch spring. I know that when pulling out quads the 18hp labors at a low rpm.
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