Kohler K series short blocks

[Greg Riutzel]

Where may I find information on K series short blocks? I have a K 341 that is a short block installed in 1995. I am having a difficult time sourcing piston rings. It has a Mahle piston, but the ring specs are much different from what is available from suppliers.

Greg

 

[digger]

Where may I find information on K series short blocks? I have a K 341 that is a short block installed in 1995. I am having a difficult time sourcing piston rings. It has a Mahle piston, but the ring specs are much different from what is available from suppliers.

Greg

Not hard at all if you tell us what tractor it's in. Or the spec# of the engine.

 

[Greg Riutzel]

The tractor is a 1650. The engine is a K341 spec number 4552241 with engine s/n 2430505211. On the tag there is a space for the short block part number through which internal components are referenced as stated on the tag That space is blank, not faded or erased with age, but blank.

 

[jstich]

https://isavetractors.com/kohler-k341-k361-m16-piston-kit-with-rings/
Hard to beat!

 

[digger]

https://isavetractors.com/kohler-k341-k361-m16-piston-kit-with-rings/
Hard to beat!

I guess you missed the part where he said he had a Mahle piston!

 

[digger]

The tractor is a 1650. The engine is a K341 spec number 4552241 with engine s/n 2430505211. On the tag there is a space for the short block part number through which internal components are referenced as stated on the tag That space is blank, not faded or erased with age, but blank.

https://randysengine.repair/products/kohler-std-new-style-mahle-piston-ring-set-45-108-10
http://www.psep.biz/store/kohler_piston_rings.htm

 

[jstich]

I guess you missed the part where he said he had a Mahle piston!

$77 to $99 for Mahle rings only, vs. $59 for piston, pin, rings, retainers

 

[Greg Riutzel]

Thank you digger. I'll try Randy's. So far Jack's, Pat's, and one other also listed them and accepted payment; only to be refunded with NLA as the explanation. No Longer Available

 

[digger]

$77 to $99 for Mahle rings only, vs. $59 for piston, pin, rings, retainers

Norman doesn't sell Mahle pistons or rings.

 

[Greg Riutzel]

So if I can't get rings; can this engine with a Mahle piston, and rod with p/n 45 059 01, go with a stock earlier style that seems to have more options?

 

[tlavalette]

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[kharvey]

If you are doing this right you would measure the bore as stated in the Kohler service manual to insure getting parts that fit.

 

[dschwandt]

Do it right and do it once.

 

[hydroharry]

Greg - it appears to me since you have the new style Mahle piston you must use the rings specific to this piston.
It's interesting only 1 ring set is listed, Kohler part no. 45-108-10 (or 10S which is the same), and it's listed as STD (standard) but the spec for it shows 3.780" (which is .030 oversized). So it appears these rings must be used with the Mahle piston in the STD size as well as all the oversizes.

Kendal and David - I'm not disagreeing with you guys, but it sure appears size of the bore isn't gonna matter if there is only 1 ring set used for all sizes.

 

[jstich]

Throwing a new set of rings on a used "new style" piston is not a successful rebuild.

 

[digger]

Throwing a new set of rings on a used "new style" piston is not a successful rebuild.

Nothing at all wrong with doing that if you prep the cylinder first.

 

[jstich]

Nothing at all wrong with doing that if you prep the cylinder first.

Yea, I'm sure that piston that has been run for 25 years would fit perfectly after the cylinder has been "prepped"

 

[digger]

Yea, I'm sure that piston that has been run for 25 years would fit perfectly after the cylinder has been "prepped"

Actually it would, I've done several with no issues.

 

[jstich]

Actually it would, I've done several with no issues.

Unless it needs bored, then its back to square #1
Sadly we have no information on what if any measurements have been taken on this cylinder bore.
Who knows it might already be .040 over?

 

[digger]

Unless it needs bored, then its back to square #1
Sadly we have no information on what if any measurements have been taken on this cylinder bore.
Who knows it might already be .040 over?

Ever seen an AQS engine bored .040 over! Better yet, have you ever tried to bore one that big!