[Chaser]

Ok, maybe a dumb question, but I need some assistance. Tearing down a Kohler K301 12 HP for a rebuild, the piston is stamped:
03-3360-09-A
.003

Can anyone help break this down? I believe the .003 is overbore from the factory due to being out of specs.
If this is the case what new piston do I order?

Thanks for any insight!

 

[Chaser]

Another question, what does anyone use for JD green engine paint?

 

[HD-JD110Fan]

Ok, maybe a dumb question, but I need some assistance. Tearing down a Kohler K301 12 HP for a rebuild, the piston is stamped:
03-3360-09-A
.003

Can anyone help break this down? I believe the .003 is overbore from the factory due to being out of specs.
If this is the case what new piston do I order?

I wish I could offer a definitive answer on the .003 stamping on the piston but when fitting a new piston having careful measurements taken of the cylinder bore with a micrometer and telescoping gage and measuring the piston with a micrometer is the only way to be sure of bore size and how much clearance you have. You'll need to compare the piston you have to Kohler specs to see if it is actually .003 oversize or not and if a std piston can still be fitted with proper specs. Kohler has their engine manuals and engine specs free online and Brian Miller has a great specs section on his gardentractorpullingtips.com website. If you don't have access to a micrometer hopefully you can get a shop or friend help with measurements.There are several good videos on YouTube on taking accurate measurements. Taking measurements with a micrometer is a must over using dial or digital calipers however which won't reliably give accurate measurements when measuring bores or pistons. You might also email Kohler and ask about the piston stampings. Again I wish I could give you a more definitve answer on that but I hope the other info helps.

 

[HD-JD110Fan]

Another question, what does anyone use for JD green engine paint?

Glad you asked this question, I need to know about green paint for my engine block too. I don't know if a high temp green was ever used. I've never seen it offered by JD so I'm thinking they just applied regular JD green. Can anyone offer us their thoughts and advice?

Also another question, was the cylinder head on 1960's JD 110 round fender Kohler 8 h.p. engines painted green originally? From photos I've seen in the JD factory service manual it appears that cylinder heads were painted green. It's a little hard to be sure since those photos are black and white but going by the shading in the photos the head looks like the same shading as the engine shrouds which were of course painted green. Any thoughts or comments are appreciated, thanks.

 

[Chaser]

I have always seen the head painted the same as the rest of the engine.

 

[HD-JD110Fan]

I have always seen the head painted the same as the rest of the engine.

I agree, although I've seen photos of some 110 R Fs that guys have with the head sand blasted or bead blasted bare aluminum, I too believe that they originally came from JD painted green. Thanks.

 

[Kster526]

I Mother Deere's paint but do to cost I have switched to Tallmans .This was recommended by the Elfman himself and for the cost it has worked well and is a very very close match.
I like the head of mine to be natural unpainted when doing green engines. When redoing a black engine I paint the whole thing black.Iwill run a wire wheel over the head lightly to clean it up.
Chaser call Pikeville. They are closed today do to a death in the family but Mike in parts is very good with parts numbers and may be able to help you out 610-987-6277 with that.

 

[Chaser]

Thanks brother.

 

[ckjakline]

I also painted my 140 block with tallmans jd green.i polished the head and cleared it so it won’t oxidize. (Hopefully)

 

[ckjakline]

I would think they would have o/s after the .003 if it was out of spec. I’m not exactly sure on the stamping on the piston. Haven’t had to rebuild one yet.

 

[Kster526]

HAVE YOU HAD A CHANCE TO CALL YET CHASER ?

 

[Chaser]

No, not yet. But I did get w new piston in the rebuild kit it got. The new and old pistons mic almost the same.