OS 18TZ Marine Conversion For Sale

[BobBonahoom]

I have an OS18TZ that was converted for marine use. It has an air cooled airplane head (turbo plug) and is fitted with a K&B "Black Carb". The original carb is also included.

The price is $135 shipped in the USA lower 48 states.

The flywheel is a Novarossi 21, (I think). Collet is 1/4-28 x 0.150" flex hex.

This engine has been run very rich for about 10 minutes on 65% nitro with 18% oil (80/20 syn/castor)

Here are the numbers:

Bore: 0.630"

Stroke: 0.590"

Exhaust time: 182 degrees (was 162 degrees, but I raised it to 182).

Boost and transer: 115 degrees (stock)

Intake opens: 211 degrees ATDC (I advanced the intake 4 degrees, to 211 degrees ATDC, or 31 degrees ABDC)

Intake closes: 60 degrees ATDC (stock)

Head clear: 0.007"

Head volume: (did not measure)

Rod length: 1.085"

 

[shoboat]

Bob,

Would you want to trade me the motor for some more propellers?

I would be interested in a trade only. I have your M-445 ready to ship.

Let Me Know Please?

Mark Sholund

231-590-3023

 

[BobBonahoom]

Good idea. Sold for future prop credits. I will send it to you today.

ENGINE IS SOLD

 

[shoboat]

Bob,

Thank You !!!

Mark Sholund