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-   -   2 stroke compression question (https://www.offshoreonly.com/forums/general-q/367651-2-stroke-compression-question.html)

underpsi68 07-26-2020 07:51 PM


Originally Posted by mcollinstn (Post 4750068)
Yes, you are right.. Nobody makes ultralight 2 stroke outboards anymore. It's a shame. For what you describe, I would look into a powerhead or block.

Complete powerhead -
https://www.ebay.com/itm/Yamaha-Outb...-/254663384100

Above motor may have salt rot in it. I suppose you could ask the guy to pull off the exhaust chest cover and send pictures...

Or, here is a very pretty bare block. You might want pictures of the cylinders..

https://www.ebay.com/itm/15HP-63V-15...-/273383360024

That powerhead looks a little rough, especially coming from Florida. Mine was like new on the outside.

I found a new Yamaha case for just over 1000. I seen the China version. Much cheaper but I worry about the quality. The machining tolerances and also the metal quality.

Thanks

underpsi68 07-26-2020 07:57 PM


Originally Posted by oconnor marine (Post 4750086)
clean real good with brass brush and apply marinetex. Let cure and flat file. Reasemble with new gaskets

Hummm I never thought of that. I'm trying to salvage the summer and I could worry about building a new power head over the winter.

Thanks for the idea!!

oconnor marine 07-26-2020 07:58 PM


Originally Posted by underpsi68 (Post 4750135)
Hummm I never thought of that. I'm trying to salvage the summer and I could worry about building a new power head over the winter.

Thanks for the idea!!

ive done it many times

underpsi68 07-26-2020 08:20 PM


Originally Posted by oconnor marine (Post 4750136)
ive done it many times

how does it hold up long term?

I'm also concerned the compression is low. I won't know till I put it back together.


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