Re: Turbo on a gas?

Posted by Steve - IN on March 21, 2003 at 04:35:17 from (12.222.31.186):

In Reply to: Turbo on a gas? posted by Farmall Daddy on March 20, 2003 at 17:03:28:

Farmall Daddy,
It's do-able, but you'd end up with a lot of cubic dollars in that tractor.

The compression ratio is probably low enough that a mild amount of boost won't hurt - something on the order of 7 to 10 psi, a little over a half an atmosphere extra. You're going to have to get a custom tube header fabricated to feed the turbo. And it will be a lot easier to suck thru the carb rather than blow into the carb. You'll also need get a vane / clamshell combination that works for 800 to 1600 RPM's -- something intended for a small cube Diesel should come close -- but still be optimized for higher RPM.

I'd think something like the old Judson superchargers would be a better way to go. Easier to get the turning speed right by changing the pulley size, and they were designed for slower turning engines. At least it would save a custom built header.

To be safe, you'd want to put a detonation sensor on it, and maybe water injection -- or some way to turn down the wick.

The M doesn't have a cross flow head, so the volumetric efficiency isn't real good, and you can't get the max benefit from a blower. That's a fairly minor point, though, when you start pricing some of the turbos and supercharger kits that are available for the project.

Steve

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