Keystone Turbo

Paul Gi. · Dec 27, 2014

Ordered a turbo today anyone have any experience with them. Putting this in a Farmall Super M with a C-281 motor. Has new pistons and sleeves from Bates Corp. Red Power kit. Keystone told me that these pistons will work but standard flat top pistons are ideal but new ones are hard to come by. Any feedback good or bad would be helpful. Just want to get this set correctly. Extra money for something that I don't want to be disappointed in.

Kent Petersen · Dec 27, 2014

take those pistion out and have machine shop cut them down to flat tops it works

David G · Dec 27, 2014

You can make those work by limiting the turbo boost, or add water injection if you want a real performance tractor.

jm. · Dec 27, 2014

You are going to find that turbo set up for a gas engine is totally different situation from a diesel engine. Takes a little more work and know how. Those are high compression pistons you have , I think you will have to back off some on the dome to get enough air in there to make it work. Air,Gas and compression then rpms and you have it. Thing is you have to have a balance of air and gas and may be hard to do across the complete RPM curve.

LP-Always · Dec 27, 2014

Paul send an email with your phone # I will call you and tell you what I know. I have a 880 oliver with dome pistons with keystone turbo for two years with no problems.

Paul Gi. · Dec 27, 2014

sent you an e-mail

Paul Gi. · Dec 27, 2014

sent you an e-mail.

Indiana Ken · Dec 27, 2014

Did Keystone explain why flat top pistons work better than the pop ups with their turbo? They should be able to tell you what their testing or the customer experience has been.

Typically, with turbo charged or super charged gasoline engines the concern is for spark knock. The high compression pop ups will have more compression than the flat tops and therefore more prone to spark knock. That is not bad, it simply means you have to run higher octane fuel. The pop ups require a higher octane fuel even without the turbo charger.

Certainly, Keystone is recommending a minimum octane fuel for use in your tractor with the flat top pistons...they have to tell you that. If the minimum octane recommended is 89 then running 91 or 93 with the pop ups should most likely be okay assuming a small increase in compression. However, if Keystone says use a minimum of 91 or 93 octane fuel with flat tops...then you are looking at race gas for the pop ups. That is not bad, it simply means you have to use race gas.

Your best information should come from Keystone based on their testing or maybe they did not do any testing....?

VicS · Dec 27, 2014

I would bore out the jets in the carb till you can get enough E85 in there. We need to burn up that corn! Vic

David G · Dec 27, 2014

That is a really good idea, E85 would like the extra compression.

Keystone Turbo

Paul Gi.

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Kent Petersen

Well-known Member

David G

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jm.

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LP-Always

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Paul Gi.

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Paul Gi.

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Indiana Ken

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VicS

Well-known Member

David G

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