Is this a 13 fin block?

[ebinmaine 73,351]

Here's a couple pics of the K341 engine that's in Cinnamon Horse.

 

I believe I see 13 fins...

 

So... Heavy duty block?

 

 

 

 

[The Tuul Crib 7,339]

Yep thats 13! What a beast!

Edited January 1, 2020 by The Tool Crib

[Pullstart 67,242]

Know what that tells me?  That’s one more than 12 fins.

[CCW 1,385]

Yup. I see 13.

[Herder 2,355]

You might be on to something.  looks like 13 to me.

[ebinmaine 73,351]

So that gets me to wondering because of something that @richmondred01 posted.

This particular tractor was originally purchased by a telephone company for use in maintaining their own grounds. Was there something such as a special order commercial duty? Or something along those lines?

 

 

[The Tuul Crib 7,339]

so was the eggnog spiked?

[ebinmaine 73,351]

1 hour ago, The Tool Crib said:

so was the eggnog spiked?

No. Not at all.

 

Just wondering if this is really one of those rare heavy-duty blocks...

 

And if so, why do I have one?

 

[Pullstart 67,242]

So you can skid logs, push snow and do mountain man stuff.  That was easier than we thought, right?

[ebinmaine 73,351]

5 minutes ago, pullstart said:

So you can skid logs, push snow and do mountain man stuff.  That was easier than we thought, right?

I like doing mountain man stuff

[Pullstart 67,242]

I just hope I have a 13 fin block too, so I can pretend I have mountains.  But they’re actually just mole hills.

[Crickets 4]

How do you count your fins? From where to where, full or partial and split or whole?  How do you come up with 13 here?

[ebinmaine 73,351]

5 minutes ago, Crickets said:

How do you count your fins? From where to where, full or partial and split or whole?  How do you come up with 13 here?

Look at the second picture where the engine is painted off-white. Easier to see that one. Count the white horizontal fins that you can see straight up from the crankshaft.

 

 

[Crickets 4]

Thanks  Got it.

[wildman 205]

check this out 

 

[Stepney 2,354]

I know the E16 has a 13 fin too. I've heard the term but have no idea what the difference is. 

[ebinmaine 73,351]

1 minute ago, Stepney said:

I know the E16 has a 13 fin too. I've heard the term but have no idea what the difference is. 

From what I've gathered the 13 fin 16 horse block can be bored to a larger size so it is more desirable for pulling. If you are not pulling it would be more desirable because it is heavier duty with a thicker cylinder wall.

 

[WildmanC120 613]

Well this thread inspired me to go out and check my C-160. I think I got the jackpot as I have a 13 fin also. 

 

 

[oldredrider 2,553]

Most, if not all, C-160's came with the 13 fin block. Not really a rare find but because of the pullers desiring them, they're getting hard to find, unless it's in a tractor.

[pfrederi 18,771]

Unless you are planning on a big over bore i do not see any advantage over a 12 fin block.

[WildmanC120 613]

55 minutes ago, pfrederi said:

Unless you are planning on a big over bore i do not see any advantage over a 12 fin block.

Gloating doesn't count??? 

[ebinmaine 73,351]

1 hour ago, pfrederi said:

Unless you are planning on a big over bore i do not see any advantage over a 12 fin block.

That would be it....

 

 

But at least I know that if I wanted to create 1/8 of a DZ302 or LT/1 I have the bore capacity to do so.

[formariz 12,051]

Differences Between the 12 fin and 13 fin 16hp OEM Kohler blocks, and the (Kohler-Replicated 16hp) Aftermarket Blocks -

• The 12 fin 16hp Kohler K341 K-series and M16 Magnum engine blocks have a curved indentation in the cooling fins (clearance for a straight oil fill/dipstick tube) and a threaded hole at the bottom of the cylinder. Count the number of fins from the PTO end of the block. These blocks have a thinner cylinder wall than the 13 fin block. These blocks are most commonly used for light duty lawn and garden equipment applications, and when used for a competition pulling application, can be safely bored up to a 3.937" piston without danger of seriously weakening the support of the cylinder wall. A cylinder restraint strap is highly recommended, especially when burning methanol fuel.
• But the 13 fin 16hp Kohler K341 K-series engine block have a thicker cylinder wall. Count the number of fins from the PTO end of the block. This block is somewhat rare, and used mainly for heavy duty industrial applications, and when used for a competition pulling application, can be safely bored up to a 4.000" piston without danger of seriously weakening the support of the cylinder wall. A cylinder restraint strap is highly recommended too, especially when burning methanol fuel. Both the 12 fin and 13 fin blocks originally have a STD cylinder bore of 3.750".
• If a bigger piston is needed to be used than mentioned above, it's advised to use an aftermarket block, such as Eburg, J2 or Jones. All of these blocks are made of high quality material, and one is not better than the other (quoted by Donnie Sample, of Lakota Racing). These blocks have a much thicker cylinder wall than a 13 fin block and can be safely bored for up to a 4.500" piston. And JE high quality aftermarket high performance pistons, billet connecting rods, etc., can be purchased from Lakota Racing (http://www.lakotaracing.com).

[pfrederi 18,771]

That after market block has NO cooling fins.  Guess you do not run it for long periods of time

[formariz 12,051]

1 hour ago, pfrederi said:

That after market block has NO cooling fins.  Guess you do not run it for long periods of time

Strictly for racing use. One can get also head blanks for it with no fins.