20cc Zenoah

Hi Guys,
Does any one do a marine cylinder to fit a 20cc Zenoah ??? Is it possible to convert those babies into a marine engine ??? like the 231 & 260s

Thanks in advance .

Tony

Yes and its possible to convert.
About 3 months after we posted a picture of our conversion MHZ came out with their protoype and ran a short run of conversions.
It may have intended to be a marine engine at some point as the cylinder is already drilled and tapped for the water jacket hold down screws.It appears Zenoah stopped short of a PUM version.(representitives from K/Z nor Husqvarna has responded to my inquires regarding the future availiblilty of PUM versions)

The water jacket is custom made as none of the previous PUM water jackets will fit, nor will any of existing motor mounts fit.

I have not set the price on a full conversion nor made plans to publicly market anything until everything has been thoroughly tested. ( A complete bolt on that would include the water jacket, a machined cylinder, motor mounts,throttle linkage, starter and the ignition trigger)
The key thing to getting these engines producing power is to have the correct expansion chamber, unfortunatly there is not one made that will work correctly with a gasoline engine of that size.It takes time to develope pipes.We wasted 18 months on existing pipes and now we are going to do our own.

The big reason you don't see a proliferation of parts for these engines is:
1 its not NAMBA legal for G-1
2 the price of the engine was too high , but it is coming down
3 its not an engine suited toward large cats or sport hydros, its better suited to small monos, think in terms of high rpm and small props
4 the rank and file have yet to see a boat powered by one of these running heat racing speeds, there is no reason to not expect this engine to be able to run mid 50s.

Keep an eye on MGB.com there may be an article on this down the road.

Hi Bob,
Thanks for all th info, I have the perfect Cat hull for this engine.

Will be watching MGB for an update.

Cheers Tony :woohoo:

Bob,
I have an engine here that i would like coverted are you able to help at all ??? I have the engine mounts and will need a tuned pipe as well.

Thanks in Advance.

Tony

Bob,
What is your e-mail Address ?? Also your phone number ??

Cheers Tony

Doesn't seem to be a pm system here, I'm not putting phone number or email on the net.

I'm not soliciting sales, just giving some general information. We don't plan on selling anything until the pipe is ready.

Bob,
Sweet as, Are you a member of JRCBD then ??? Would be keen to just have a look of an engine converted thats all ??? How far awy is the pipe ???

Tony

I'll have to dig up some pics. Pipe is a few months away.Water is frozen and I'm in no particular rush,not many people interested in these engines, so its not a priority.
not a member of JRCBD

You can contact each other by clicking on the other member's profile...can send Emails through there...should work.

Marc,
Tried that, No go ??? Comes up invalid security code ???

Tony