wrote:

I skipped ahead and read only the conclusion starting on page 14.  They really call out OMC.  The worse example they state is an OMC at idle dumping 42% of fuel. I guess we just need to go WOT all the time.

With studies like that done so long ago, it is a wonder two stroke outboards stayed in production as long as they did. The Etec was a very fuel and oil efficient engine, too bad the legacy of the earlier motors was what is was, now we have four stroke outboards, while being great motors in many ways, the 30 HP motors weight the same as my 50 HP two stroke. Not a step forward in my book

I skipped ahead and read only the conclusion starting on page 14.  They really call out OMC.  The worse example they state is an OMC at idle dumping 42% of fuel. I guess we just need to go WOT all the time.

I did some research on this topic a while back and found this EPA Study of Crankcase fuel drainage.  I got a kick of it as it is a real study on the topic. Makes for some light reading.

EPA Crankcase Drainage Study

If you live north of the border, I hear that there was a factory option available for this...

Ormand, Ray just reposted an older thread on the process of collecting waste fuel/oil, have a look through its not all that difficult to do, I only made one modification to this and I ran a second line from the collection tank to redirect the gas fumes back up into my air silencer intake, mainly because I run 56' motors that are pressure systems and are not single line fuel pump, so the option of running it back into my fuel tank is not an option

wrote:

Now none of that, I like them old motors.  You just need to spend time on them to keep them in good nick as the Brits say.  

Makes you a smarter person too.
 

Now none of that, I like them old motors.  You just need to spend time on them to keep them in good nick as the Brits say.  

I think give the old Johnson  a good send off after you get the new tohatsu it would make a really cool mailbox
Charlie 

wrote:

Here is the previous thread on your subject.

www.feathercraft.net/forum/29-outboard-m...modification?start=0

And I know Jabe did the mod on his '56 30 HP Johnson


hey Ormand, I have done 3 30hp, 1 35hp, and a 15hp that is said can't be done, I don't know what motor you have to help you, it's pretty easy if your mechanically inclined, I have posted in some of my threads of what to do, I will have to hunt them down for you as to where,  cheers my friend will try and help the best I can
 

Ormand before you do a crankcase drain recovery modification you need to make sure that you've got the motor running good and in tip top shape.

Should you decide to sell your motor the modification most likely will be alien territory for the buyer and may chase them away.