Hard to find parts

[robfurman]

I have been unable to locate two parts for my 1966 Johnson seahorse 60. If anyone can assist, please let me know.

Motor: 1966 Johnson Seahorse 60HP
Model: VXL-12R
Part Numbers:

307085 Stud, Rear
307084 Stud, Front

These are the long bolts that secure the two pieces of the Lower Unit together. The Front one is broke and the Rear I decided to replace only if i can locate a new replacement for. At the very least I need to locate the Front Stud.


Thanks,

Robert

 

[oldcatamount]

Re: Hard to find parts

Try this web site; www.aomci.org. It's a site dealing in older motors and someone on their forum can help. If it were me, I'd take the one you have and go to a (good) hardware store and see if they can match it. Make sure you get stainless steel.

 

[hidef]

Re: Hard to find parts

You can also checkout Seaway marine they specialize in NLA parts.

http://www.seawaymarine.com/

 

[F_R]

Re: Hard to find parts

Forget the hardware store, ain't no way. That is a special stud, used only for that purpose.

EDIT: Not 100% absolute sure, but I reasonably believe that stud is changed to 313209. At least it was in 1967-up. www.marineengine.com has 10+ of those in stock. Call them and ask if the length is right. That would be the only possible difference.

 

[robfurman]

Re: Hard to find parts

Forget the hardware store, ain't no way. That is a special stud, used only for that purpose.

EDIT: Not 100% absolute sure, but I reasonably believe that stud is changed to 313209. At least it was in 1967-up. www.marineengine.com has 10+ of those in stock. Call them and ask if the length is right. That would be the only possible difference.

I saw that on an online catalog for a 1968 motor with a slightly different model number, but I wasn't sure being a different part number if it would be the same.


Robert

 

[F_R]

Re: Hard to find parts

I've had lots of those apart---40 years ago. So, I am pretty darn sure it is the same stud, probably with some minor change. That's why I said check the length. They had a lot of breakage of those studs, that may have something to do with the number change too. 40 years is a long time to remember stuff like that.

PS, don't even think of putting that back together without using a torque wrench to tighten the nuts to 24-26 foot pounds. I shoot for 24, using an inch pound wrench at 290 inch pounds.

 

[robfurman]

Re: Hard to find parts

I've had lots of those apart---40 years ago. So, I am pretty darn sure it is the same stud, probably with some minor change. That's why I said check the length. They had a lot of breakage of those studs, that may have something to do with the number change too. 40 years is a long time to remember stuff like that.

PS, don't even think of putting that back together without using a torque wrench to tighten the nuts to 24-26 foot pounds. I shoot for 24, using an inch pound wrench at 290 inch pounds.

I was wondering of there was a recommended torque for those. Seeing that the stud is round is it just standard practice to hand tighten and then put thw two halves together and toruqe as to 24-26?

Robert

 

[robfurman]

Re: Hard to find parts

You can also checkout Seaway marine they specialize in NLA parts.

http://www.seawaymarine.com/

Thanks for the link, they had what I needed. I'm still shocked that those studs were listed at $51.00 for the rear and $25.00 for the front. There prices were a bit lower so it saved me a few bucks. I also was able to locate the bearings and seals on Ebay at 50% of what boats.net and marineengone.com had them listed for. You know how it is, once something is listed as a marine part the price goes up by like 30% or more...


Robert

 

[1946Zephyr]

Re: Hard to find parts

Forget the hardware store, ain't no way. That is a special stud, used only for that purpose.

EDIT: Not 100% absolute sure, but I reasonably believe that stud is changed to 313209. At least it was in 1967-up. www.marineengine.com has 10+ of those in stock. Call them and ask if the length is right. That would be the only possible difference.

Darn, that shoots my idea down. I fugured if a guy got a long stainless bolt and retrofitted it, that would work. Or why not make your own, which stainless rod matching the diameter and cutting the threads to match. I'm sure a good machinist can make these easy enough, can't they? I've worked in machine shops for 24 years and we did all kinds of wild things.

 

[samo_ott]

Re: Hard to find parts

Zephyr, I was thinking the same. I'm looking at picture of the studs now in the parts manual and it looks like a simple rod with threads at both ends. But I would certainly defer to FR's expertise as I have never seen one apart!

 

[F_R]

Re: Hard to find parts

OK guys, the stud is 3/8" diameter from the top down to where it enters the lower gearcase. At that point it gets considerably larger to form a flange, under which there is a metal gasket washer. Below the washer if reduces down to a large threaded portion (7/16"? 1/2"?) that screws into the lower gearcase. It is stainless steel, alloy unknown, but tough stuff because it takes a severe beating when you go banging over tree stumps. Unless you know a machinist that works for peanuts, good luck getting it made for less than $50.

The big end is screwed into the lower gearcase at 28-32 ft pounds, the nut on top end is 24-26 ft pounds.

 

[1946Zephyr]

Re: Hard to find parts

OK guys, the stud is 3/8" diameter from the top down to where it enters the lower gearcase. At that point it gets considerably larger to form a flange, under which there is a metal gasket washer. Below the washer if reduces down to a large threaded portion (7/16"? 1/2"?) that screws into the lower gearcase. It is stainless steel, alloy unknown, but tough stuff because it takes a severe beating when you go banging over tree stumps. Unless you know a machinist that works for peanuts, good luck getting it made for less than $50.
The big end is screwed into the lower gearcase at 28-32 ft pounds, the nut on top end is 24-26 ft pounds.

Okay, that explains the high cost right there. I was just looking at the parts diagram here
http://www.marineengine.com/parts/v...ntage-evinrude-johnson/382080/38208000001.htm
and I see the flanges you're taking about. I'm willing to bet, that those are there, to keep the lower half in one place, instead of moving around.

 

[samo_ott]

Re: Hard to find parts

OK guys, the stud is 3/8" diameter from the top down to where it enters the lower gearcase. At that point it gets considerably larger to form a flange, under which there is a metal gasket washer. Below the washer if reduces down to a large threaded portion (7/16"? 1/2"?) that screws into the lower gearcase. It is stainless steel, alloy unknown, but tough stuff because it takes a severe beating when you go banging over tree stumps. Unless you know a machinist that works for peanuts, good luck getting it made for less than $50.

The big end is screwed into the lower gearcase at 28-32 ft pounds, the nut on top end is 24-26 ft pounds.

And that's why I deferred the answer to someone who knows!

 

[robfurman]

Re: Hard to find parts

Just curious, but how in the heck do you torgue down a threaded rod that has no hex area to place a wrench, socket???

Robert

OK guys, the stud is 3/8" diameter from the top down to where it enters the lower gearcase. At that point it gets considerably larger to form a flange, under which there is a metal gasket washer. Below the washer if reduces down to a large threaded portion (7/16"? 1/2"?) that screws into the lower gearcase. It is stainless steel, alloy unknown, but tough stuff because it takes a severe beating when you go banging over tree stumps. Unless you know a machinist that works for peanuts, good luck getting it made for less than $50.

The big end is screwed into the lower gearcase at 28-32 ft pounds, the nut on top end is 24-26 ft pounds.

 

[samo_ott]

Re: Hard to find parts

Good point. Double nut? But you'd probably loosen it when removing the other nut. I'm sure there's a good answer as obviously it's being done!

 

[levi_tsk]

Re: Hard to find parts

double nut and then an end wrench to tighten the bottom nut which will loosen the top and then BOTH can be spun off by hand .... ;D

 

[1946Zephyr]

Re: Hard to find parts

What is the torque settings? I think I worked on one of these once. All I did was clamp it with a vise grip and wrenched it down good.

 

[Sixmark]

Re: Hard to find parts

If you are worried about marring the threads, you can always use a piece of an old innertube inside the jaws of a vicegrip.........or you can always bite down hard, twist, and repeat.