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  Topic Review (Newest First)
06-21-2015 07:57 PM
fivetoes
Re: Nissan / Tohatsu 6h 4 stroke

did you ever find out what was wrong with your 6HP? Just bought one (Tohatsu 6HP) and ironically discovered the same problem! Your post is the only one I can find that sounds exactly like what we are experiencing. Please share any info with me at: tobackperio@gmail.com
01-31-2014 06:53 PM
dabnis
Re: Nissan / Tohatsu 6h 4 stroke

Quote:

Quote:
Originally Posted by christian.hess View Post
did you read the link I put a few pages back

its can be used as refference for other johnson motors

my last johsnon was a 6hp longhshaft...

just keep the exhaust fumes flowing and make sure it doesnt suck up the fumes...as it will overheat and depower...

there is a mod to the engine cover I fiorget what it was for the 6 but on other motors it includes making a vent to route clean air in and dirty fumes out

cheers
Quote:
Some years back I converted one of my outboards to long shaft. There are lots of OMC parts shops on the web. IIRC, all I needed was a drive shaft, water pick up tube, shift rod extension, maybe a new rod?, and the lower leg spacer. My guess is that all the parts could be had for $100?

Good point on the ventilation issue . On our Coronado 25 we had to keep the cover wide open all the time or it would load up. I drilled some small holes near the top of the cowling which seemed to help.

Paul T
Forgot this, the most difficult part of the conversion was re-installing the power head end of the water pick up tube. There is an o ring that fits into a recess in the block, it kept falling out. Finally put some gasket seal on it, let it dry for a while and stuck it into the recess.

What I should have done was to turn the motor upside down, it would have also been much, much easier to see what I was doing, Duh!! My wife says that at times I get "overly focused".

Paul T
01-31-2014 03:52 PM
ericb760
Re: Nissan / Tohatsu 6h 4 stroke

The mods have approved an Outboard Mintenance sticky. Please come check it out, especially those of you with extensive outboard knowledge!
01-31-2014 10:46 AM
dabnis
Re: Nissan / Tohatsu 6h 4 stroke

Quote:
Originally Posted by christian.hess View Post
did you read the link I put a few pages back

its can be used as refference for other johnson motors

my last johsnon was a 6hp longhshaft...

just keep the exhaust fumes flowing and make sure it doesnt suck up the fumes...as it will overheat and depower...

there is a mod to the engine cover I fiorget what it was for the 6 but on other motors it includes making a vent to route clean air in and dirty fumes out

cheers
Some years back I converted one of my outboards to long shaft. There are lots of OMC parts shops on the web. IIRC, all I needed was a drive shaft, water pick up tube, shift rod extension, maybe a new rod?, and the lower leg spacer. My guess is that all the parts could be had for $100?

Good point on the ventilation issue . On our Coronado 25 we had to keep the cover wide open all the time or it would load up. I drilled some small holes near the top of the cowling which seemed to help.

Paul T
01-31-2014 09:23 AM
christian.hess
Re: Nissan / Tohatsu 6h 4 stroke

Quote:
Originally Posted by Lou452 View Post
Your only limits will be time, money, skill and desire. Take it over if you feel the need.
Let us know how it goes, success or not. All of life is a learning process. If you share we will learn. Well maybe we will
best wishes , Lou
did you read the link I put a few pages back

its can be used as refference for other johnson motors

my last johsnon was a 6hp longhshaft...

just keep the exhaust fumes flowing and make sure it doesnt suck up the fumes...as it will overheat and depower...

there is a mod to the engine cover I fiorget what it was for the 6 but on other motors it includes making a vent to route clean air in and dirty fumes out

cheers
01-30-2014 11:41 PM
ericb760
Re: Nissan / Tohatsu 6h 4 stroke

Quote:
Originally Posted by Lou452 View Post
Your only limits will be time, money, skill and desire. Take it over if you feel the need.
Let us know how it goes, success or not. All of life is a learning process. If you share we will learn. Well maybe we will
best wishes , Lou
You sound like my dad when I asked him for seed money to start a mobile DJ service in my teens.
01-30-2014 11:06 PM
Lou452
Re: Nissan / Tohatsu 6h 4 stroke

Quote:
Originally Posted by ericb760 View Post
A bit OT, but, since it seems that this thread is still being read, and my request to start an outboard sticky is being reviewed by the mods, I'll ask it here. I have a 1976 Evinrude 6hp Short Shaft. I have the opportunity to purchase a 1974 Johnson 6hp Long Shaft advertised for sale for "parts" (it turns but will not start). Seller wants $100. Based on what is available research wise, it would seem that I could make my short shaft in to a long shaft if I cannibalize it. Or, I could diagnose whatever the problem is, repair it, and then have two outboards. Which would be optimal for my dinghy. Advice? Yes? No? Is there a flaw in my carefully planned takeover of the 6hp used outboard market in SoCal?
Your only limits will be time, money, skill and desire. Take it over if you feel the need.
Let us know how it goes, success or not. All of life is a learning process. If you share we will learn. Well maybe we will
best wishes , Lou
01-30-2014 11:00 PM
Crazy
Re: Nissan / Tohatsu 6h 4 stroke

I have a '71 long shaft Johnson 6hp and have been doing research. There is enough info on the 'net that one could rebuild these motors top to bottom. I can't answer your question because it depends on the condition of this 2nd motor. How the bearings? Races? Gears?
I have read a case in which a guy built up the transom of his boat (an aluminum utility) in order to use a long shaft OB. Absolutely necessary? Idk...
01-30-2014 10:18 PM
ericb760
Re: Nissan / Tohatsu 6h 4 stroke

A bit OT, but, since it seems that this thread is still being read, and my request to start an outboard sticky is being reviewed by the mods, I'll ask it here. I have a 1976 Evinrude 6hp Short Shaft. I have the opportunity to purchase a 1974 Johnson 6hp Long Shaft advertised for sale for "parts" (it turns but will not start). Seller wants $100. Based on what is available research wise, it would seem that I could make my short shaft in to a long shaft if I cannibalize it. Or, I could diagnose whatever the problem is, repair it, and then have two outboards. Which would be optimal for my dinghy. Advice? Yes? No? Is there a flaw in my carefully planned takeover of the 6hp used outboard market in SoCal?
01-30-2014 04:12 PM
TohatsuGuru
Re: Nissan / Tohatsu 6h 4 stroke

Why did have to look at this thread? Years since I've looked at it and it's still the same BS
This thread has more than 10 replies. Click here to review the whole thread.

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