Engine ideas

[db556]

Took the engine off my 5240 today and re-threaded the 5/16" bolt pattern on the new engine to 3/8" and mounted the adapter plate. Turned down some drill rod for a pilot bushing yesterday, now I just need to find my gear puller and get the sprocket off, and I can mock up the engine to see what I need to do with the muffler.

 

[db556]

I bored the sprocket out, needed to use my carbide boring bar HSS wasn't cutting it. And milled in a shallow keyway just need to square it out with a diamond file.

 

[gravelymay]

Hi DB

I forgot the gear spacer that goes between the gear and the engine on the crank.
Was you able to brotch out the gear the way you wanted?
Metal spacer works as well aluminum.
More Pictures we are watching.

 

[db556]

Finally got some time to work on again, got the sprocket filed out completely, and made a spacer from some rings I cut out on my plasma table turned them down one the outside and added the lips. The ID is 4" so I'm going to have to RTV everything now to just make a spacer and figure out where I put the pilot, (its one my workbench somewhere )

 

[gravelymay]

I did that once. Never again. I had to use a large prybar to take the engine off the transmission. I vowed to never again use any sort of sealant on a gasket again unless the manufacturer specifically requires it.

I noticed the last blue glue I got and used .
It did not feed the same as the old RTV did.
I went to take apart a piece and sure enough like you said
It did not want to come apart??????
They must of changed the Formula???
So the only you can use it is on each side of a gasket.

 

[db556]

Got the engine installed, its making a little bit of noise. So I'm going to pull the engine and look at the pilot bushing my DRO was a little off so it was 5 thou under. But I'll trim the hood and get the muffler situated first. I'll grab a picture tomorrow.

 

[gravelymay]

Sound good be neat to see pictures :thumbsup:

looking good

 

[db556]

I pulled the engine today, and there was a lot of wear on the bronze bushing in the planetary. I'm going to turn down a new .01 larger pilot bushing and see how that works, think I'll use 8620 this time I got some rods of that on the shelf.

 

[gravelymay]

Looking at the pictures
looks like the muffler didn't give a problem :thumbsup:
with the handle bars.

But what about the hi/lo shifter arm?

 

[db556]

The high-low arm?, I think I'm going to make a new one with a bend in it really don't want to cut out the muffler. I might replace the bronze bushings in the planetary if I can figure out what size they are while I'm at it.

 

[db556]

I got it all back together, I was a little overzealous when I cut the hood. Now for the shift arm.

 

[2manyrocks]

Maybe you can find a battery holder and hood from an electric start Gravely? That's an electric start on your motor isn't it?

If you still have the piece you cut out, it could be mig welded back to the hood and repainted.

 

[db556]

I'm trying to keep the current hood, I like it better than the tall hood for the electric starts. I've made a little battery holder for a 1/2 U battery. Not I just need to get the throttle and that arm done.

 

[2manyrocks]

I agree. I like the hood you have better than the electric start hoods.

 

[db556]

Its done :thumbsup: and I installed a light and got a start on a new wheelbarrow attachment. Now for some paint.

 

[gravelymay]

Looking great :thumbsup:

 

[gravelymay]

More Pictures :thumbsup:

 

[gravelymay]

More Pictures :thumbsup:

Well I Re Powered a 256 Gravely with a 9 Hp Robin
It was the easiest Re Power I have done.

 

[washita]

in your opinion does the 9hp robin have enough torque to replace a 10 hp kohler? if so what parts did you use to adapt the engine to the transmission and would these work on a commercial 10a? (the I.D. on my double gear measures 7/8'')

 

[gravelymay]

I get the Gear machined out to 1 inch and broach out to 1/4
for $50.00.
The 9 Hp Robin is strong running.
But not sure about being as strong as a 10 Hp Kohler.
Here is a link to 2 Re powers Last year.
Also make up a Gear spacer and a adapter spacer.kit

Gravely Mower gets a new Efficient Engine!

Here is a engine for $275.00 free shipping.

http://www.ebay.com/itm/Robin-Subar...=290670422547&ps=63&clkid=8466666469080534545