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Todd

speed

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I dont have a puller but i would like to get more out of the 520 for the long straights in my yard.Should i go with a smaller trans pulley ? Or larger ?..need some advise..ty :auto-biker:

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A smaller pulley would spin the pump faster, but I'm not sure you want to do that. Spinning it faster will generate more heat and heat kills hydros.

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Have you checked your linkages to make sure your getting full forward ? Theres a thread on here about changing the internal gear to get more ground speed out of them.

Try here

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I have a C-175Auto with a slightly larger engine pulley and it does go about 1 or 2 MPH faster then the average hydro. However I wouldn't recommend much more then that. I think the pulley is about 1/4-1/2 inch larger in diameter I can't say for sure it's been too long since I did it.

Now if you have an 8-speed that is a different...

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