Chuck it was good talking to you today. Here where I'm at right now. Another week and I should be finished.

It's looking good Rusty, the drive you made looks good too. I think it will work good too.
Thanks, Chuck

Thanks Chuck it's a proven drive. I have some still running after 12 years. Just change bearing yearly is what I recommend. Some don't but for ten dollars a bearing it's good maintaince.

Hey Rusty, what ratio is the drive and what do they cost? What is the dia. of the upper sproket?
Thanks, Chuck

Chuck it 2/1 (upper 70 lower is 35) Right now I'm not making them because of time. I sold them for $1200 which is high I know but they are bullit proof. The upper pulleys are actually a blower pulleys I remachine and the lower pulleys I buy from a vender and add the sheaves to it. The shaft is 4140 Carbon steel. The belt is 50mm X 8mm pitch. They don't slip or break. The back plate is 3/4" 6061 aluminum. The upper hub is machined out of 5" 6061 aluminum round bar.

Chuck the pulleys are interchangable. The limiting factor is the hub OD is 5". I'm guessing at maybe down to 56 tooth on the upper. Lower I have are 35 and 37 tooth. Ratio would be 1.5 - 2.0 in any combination of teeth. Blower pulleys come in any tooth you want up to 70.

Thanks Rusty.
Chuck

Chuck not wanting to miss lead anyone, but the 2/1 ratio won't work on a stock 40 Hp Kohler because of the power curve. My motor has been modified to turn between 5000 RPM and 5500 RPM. I would guess your ratio of 1.73/1 would be a better choice but I haven't experimented with a stock motor. My cam was grind by a man name Seymour. I'll PM anyone who is interested his card. Cost is $300 with your core.

Hey Rusty, this turbo produced 57 HP with everything stock in the engine. the hot oil from the turbo melted the plastic oil pump gear after 20 hrs. The engine has been rebuilt and William has added an external oil pump just for the Turbo. He said when he gets a trip to FL he will bring the engine for me to put on a boat.
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Chuck that's a cool engine. Yeah the plastic gears are even on the cam. I'm afraid of that problem with mine. Didn't like that change by Kohler. There's a aftermarket place that makes billet one for a replacement. That has to be a lot quieter with the turbo. I presume you have to use high octane gas.

Yea, we always recommend 93 oct when turning a prop. If i get this engine, we will put an intercooler on it and it will make more power, too much power and the V belt drive will slip too much. Here is a picture ot a turbo we are doing with an intercooler.
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You're getting into some serious HP now. I like the S/S stand. You did a beautiful job on it Chuck.

Thanks Rusty, It's the LNF engine out of an HHR SS Chevy. With the upgrades we are looking at over 310 HP. We have it mated to a 2.68 Gear. It's going on a 13 X 7-6 Alumitech Hull and will be used in Alaska.
If i get the Turbo Kohler, i may have to get you to build me a drive.
Thanks, Chuck