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Os max 90r-sr-m

Old 07-06-2024, 10:29 AM
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Default Os max 90r-sr-m

NIB NOS
Rear intake Schnuerle Porting.
A very reliable and high performing Marine engine.
15cc for that vintage watercraft.
Comes with shaft adapter exhaust adapter and hardware.
Very hard engine to find. RSR and the FSR are some of the most reliable engines ever made.
Once in a lifetime opportunity here. (Priced to sell)
Please PM me, I don't always see the thread.
$325.00 Shipping lower 48 $9.00

Schnuerle porting is a system to improve efficiency of a valveless two-stroke engine by giving better scavenging. The intake and exhaust ports cut in the cylinder wall are shaped to give a more efficient transfer of intake and exhaust gases.

As you can see this engine is a work of art.





Last edited by wjt61; 07-06-2024 at 10:31 AM. Reason: add price

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