Help on Mills Diesel Assembly - RC Groups
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Dec 20, 2008, 11:02 PM
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Help on Mills Diesel Assembly

I have the Mills 0.75 cc Indian version , my question is does the cutaway on the piston top go to the back or the front ??????

next question,,,, Do the large transfer port holes go towards the back of the engine or the front , thanks so much
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Dec 20, 2008, 11:05 PM
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pmackenzie's Avatar
I don't have a Mills, but in general the piston is cut away to clear the crank, so the cut away normally goes to the front.
As far as the transfer holes, the taller one is the exhaust. The exhaust is always open longer than the transfer ports.

Hope that helps,

Pat MacKenzie
Dec 22, 2008, 03:46 PM
Registered User

Just pulled the head and liner from my Russian Mills 75 replica to check.

The piston top cutout goes to the front on mine.

The cylinder exhaust ports are rectangular, and go left and right.

The two large round ports are slightly lower on the liner, and line up with the carb venturi at the rear, the two smaller round ports are to the front.

My cylinder liner has a slot in front that engages a small steel pin at the front of the case. The pin is not pressed into the case, and can easily fall out, so you may have lost yours. Should be easy to cut and fit a new one, but be sure it's not too long, or the head may rest on the pin, and not seat properly.

Hope this helps,


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