1988 Johnson 70hp inspection

[racerone]

Where is " up here " ?-----I have used a milling machine with boring head to do these motors.-----Friend ( now deceased ) let me use his equipment.----Cost me $25 / hole.----Carefully honed cylinders at home myself.----Done many of them.

 

[cesandroid]

Saskatoon SK Canada

 

[racerone]

Well----About 3 days driving away.----Too far to help out.

 

[saltchuckmatt]

In my area I can get an excellent used 70 for $500 saving significant denaros for other stuff.

Yep, doesn't pencil here.

 

[tphoyt]

I can’t remember the last time I saw a 70hp around here for sale. 15hp and under and 115 and above are common sometimes 30 to 40 but not much in between.

 

[saltchuckmatt]

I can’t remember the last time I saw a 70hp around here for sale. 15hp and under and 115 and above are common sometimes 30 to 40 but not much in between.

Just sold this for $1500 after going through it.

I bought two and they were a matched set that came off a whaler. 1986 and the vro's are going strong. Paid $1000 for the set

I did replace the pulse limiter with the blue one.

 

[cesandroid]

Stuff seems way more expensive up here than in the states. for a 1000 bucks here youd be lucky if it ran and or if the motor was toast. That being said I also still have my 49cc engine tucked away. I wanted a 56 for the power i guess. But how much better is it? not sure. Finally after feeling more closely, you can feel the transfer on the walls with my finger. gotta wonder if were getting into resleeving? and is it worth it.

 

[airshot]

In my area I can get an excellent used 70 for $500 saving significant denaros for other stuff.

Yep, doesn't pencil here.

You will pay much more for a good one around here....very popular size, so if the motor is in really good shape...double that price easily. However ...be aware...many really nice motors just look good, but have other so called "minor" issues !! I always say, if the issue is minor, fix it before trying to sell it ! In years past, I always had a way to test run, A compression gage, fresh fuel mix, so a buyer could feel confident he was getting a good running motor....usually first one out bought.....

 

[airshot]

Where is " up here " ?-----I have used a milling machine with boring head to do these motors.-----Friend ( now deceased ) let me use his equipment.----Cost me $25 / hole.----Carefully honed cylinders at home myself.----Done many of them.

Yep...retired tool maker here, did a few small motors on our Bridgeport mill with a boring head over my 50 years. Once setup, it was not that hard.

 

[saltchuckmatt]

Yep...retired tool maker here, did a few small motors on our Bridgeport mill with a boring head over my 50 years. Once setup, it was not that hard.

Guys up here are doing what they call "hone boring" and then just replacing rings. If the motor is just well used and not messed up it's a good way to get some more use out of it.

My prop shop guy, who's a good close personal friend, has a Bridgeport machine....I would be interested in any pertinent info you have on that.

 

[saltchuckmatt]

W

Yep...retired tool maker here, did a few small motors on our Bridgeport mill with a boring head over my 50 years. Once setup, it was not that hard.

Was your machine like this one?

 

[saltchuckmatt]

Yep...retired tool maker here, did a few small motors on our Bridgeport mill with a boring head over my 50 years. Once setup, it was not that hard.

Prop guy says block must be at a certain temp to bore correctly.

Any details you have would be muchly appreciated.

Matt

 

[tphoyt]

Hey Matt try reaching to Keith Rucker at
Vintagemachinery.Org
He is a wealth of info and may be willing to share some tips and tricks with you

 

[saltchuckmatt]

W

Was your machine like this one?

Oops

 

[saltchuckmatt]

Hey Matt try reaching to Keith Rucker at
Vintagemachinery.Org
He is a wealth of info and may be willing to share some tips and tricks with you

Thanks buddy, once again you came through....on another note, do you like the new color scheme and a hell of a nice guy gave me a CMC T&T.... Works great!

 

[dingbat]

Oops

Learned on a Bridgeport

 

[tphoyt]

Thanks buddy, once again you came through....on another note, do you like the new color scheme and a hell of a nice guy gave me a CMC T&T.... Works great!

Glad it worked out and went to good use.
I love the colors.

 

[saltchuckmatt]

Learned on a Bridgeport

Ever bore with one?