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Old 05-04-2007 | 10:23 PM
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chevy43
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From: Santa Cruz, CA
Default Fun with Russian Marz 2.5cc

I have bought several of thease rear induction Russian .15ci. Marz Russian diesels for cheap on ebay.

[link=http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=002&sspagename=STRK%3AME WN%3AIT&viewitem=&item=120114672438&rd=1&rd=1]Marz .15[/link]

I took a OS FP 10 carb and put it in. It fits perfectly with a little file notch to hold it in with the old spray bar. They are about $20 at Tower with the discount.

It didn't throttle well at first.... I looked at it and saw that it had about 1/64" of sub piston induction and I figured that would make the idle unreliable.

So I raised the liner by putting thin copper wire under it's seat and that got rid of the sub piston induction.

It does a nice steady reliable 3,500 rpm idle and 11,000 on a MAS 9x4 on 1/2A Baker Black Brew... That is 1/2 Davis 1/2 my pump diesel base stock.

The other thing I learned about thease is that you have to polish the burrs out of the ports before running it!!!! Whoever was suposed to do that job was probably angry that the government wouldn't let them change jobs so it didn't get done!

For $50 total it is a pretty good deal for a well designed sturdy ball bearing .15.

It weighs 6.8 oz with and exhaust collector ring and the 9x4 prop on it.

They need an exhuast prime to start because the fuel has to go all up hill to get to the cylinder unlike front carb engines...

I'm thinking about building a tri motor[8D]


Treven.