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K341S And K321Aqs Repower Compatability


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#1 victor3ranger OFFLINE  

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Posted May 12, 2014 - 03:59 PM

I had a bad weekend and threw a rod in my K341S that was in my Allis Chalmers 916H. It cracked the block just behind the starter so I am pretty sure it is toast.

 

I have a K321AQS that was in a John Deere 214, the motor is good and I was wondering if this motor would be a direct swap in place of my K341S.

 

Any information would be greatly appreciated.


Edited by victor3ranger, May 12, 2014 - 04:00 PM.


#2 Texas Deere and Horse OFFLINE  

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Posted May 12, 2014 - 04:16 PM

It all depends on what oil pan the A/C has compared to the JD.

#3 olcowhand ONLINE  

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Posted May 12, 2014 - 04:35 PM

Not a direct swap, but your oil pan off the "S" engine should bolt up to your AQS" block.  Once you swap oil pans the engine, for all practical purposes becomes a K321S.  The A denotes special oil pan, the Q is for quietline series which all use the A pan.  Most AQS engines can swap to the standard S pan, but usually you can't swap an S panned engine with an A oil pan due to notches under the flange ears off the block.  Your oil dipstick on your K321 will work fine with the pan off the blown engine.


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#4 LilysDad ONLINE  

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Posted May 12, 2014 - 04:50 PM

Does the 's' pan have the ears on the block? I wasn't aware that the two oil pans could be swapped.



#5 propane1 ONLINE  

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Posted May 12, 2014 - 05:16 PM

The oil splash dip on the rod different, because of different oil pan ??   Noel


Edited by propane1, May 12, 2014 - 05:16 PM.


#6 olcowhand ONLINE  

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Posted May 12, 2014 - 06:00 PM

Does the 's' pan have the ears on the block? I wasn't aware that the two oil pans could be swapped.

 
I only know that the "S" block engines I've dealt with did have ears that their oil pan bolted up to.  But it's a one way street to swapping.  An "A" pan won't bolt to an "S" block.
 

The oil splash dip on the rod different, because of different oil pan ??   Noel

 

The "S" uses the long dipper rod, and "IF" the "AQS" engine used the "A" pan with the deep sump extension, like I believe the JD200 series used, then the rod will work.  Those "A" pans that are flat all across the bottom DO require a shorter rod dipper.


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#7 olcowhand ONLINE  

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Posted May 12, 2014 - 06:10 PM

OK, here is a K241S.  You can see the ears off the block bolt to the oil pan.  

 

DSC00143.JPG

 

Now all the "AQS" blocks I've ever seen had the ears.  I just looked an an old K241AS that came off a John Deere 110, and it has the flat oil pan, with NO ears on the block.  All the engines I've owned that had a "Q" in the model number did have the ears, and had the deep sump off the "A" pan.  May be they aren't all that way though.  

 

Some pics from the original poster could verify things in his situation.



#8 olcowhand ONLINE  

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Posted May 12, 2014 - 06:18 PM

Here is why you can't (at least in all my situations with engines I've owned) put an "A" pan onto an "S" block.  The ramped area on the block between the ear bolt holes has a notch cut into it that runs out to the edge of the gasket seal area.  This is the line in red.  The sealing edge of an "A" pan runs along the blue line.  Putting an "A" pan on a "S" engine would leave an open area where oil would gush out of.  Now if you welded up this notch, then an A pan could be used, but it wouldn't be something I would attempt due to being very hard to weld cast iron without cold cracking.

 

notch.JPG


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#9 LilysDad ONLINE  

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Posted May 12, 2014 - 06:44 PM

I think he would be better off using the correct block/ pan combo and making a mounting adapter. I have a Wheel Horse B80 that has a stamped steel mount that bolts to the frame and the engine mounts on it. All it would need is new bolt holes to mount a big block on it.

If interested, I can photograph it tomorrow.



#10 olcowhand ONLINE  

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Posted May 12, 2014 - 06:55 PM

If he has a block with the ears, then it would be correct with the "S" pan.  He needs a wide footed oil pan that bolts directly to the tractor frame.  Using his original pan keeps his crank height exactly where it MUST be to drive the shaft to the bevel gearbox.


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#11 Texas Deere and Horse OFFLINE  

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Posted May 12, 2014 - 07:01 PM

See if this helps any.
http://gardentractor...nes#entry182187
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#12 LilysDad ONLINE  

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Posted May 12, 2014 - 08:23 PM

Very interesting! I think we have been talking about two different wide bases. I only knew the one with the notch in it.



#13 victor3ranger OFFLINE  

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Posted May 13, 2014 - 08:30 AM

Well, this gives me hope that it can be done and I can get my 916H back running again until I can find another 341S.

 

So, if I do find that the S pan does mount up on the AQS engine then I also use the dip stick from the AQS??  Or do I use the 341S dip stick in the 321AQS since it now would have the S pan on it?



#14 olcowhand ONLINE  

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Posted May 13, 2014 - 11:28 AM

Your "S" oil pan should look like this one below:

 

S oil pan.JPG

 

If your "AQS" pan looks like the one below, then you can use your aqs dipstick as the 2 pans are the same depth at bottom of the sump of the aqs pan.

 

aqs pan.JPG

 

 



#15 victor3ranger OFFLINE  

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Posted May 13, 2014 - 01:32 PM

Awsome, thank you sir :thumbs:






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