K321 rod oil hole position
 

I started a new thread on this as my rebuild thread was getting pretty long. I received my new Ign. switch and it took care of the no voltage to coil at start up position. Had the engine all set to put in frame for 2 weeks. Installed engine and hooked up drive shaft and installed starter. Awoke this morning and was worrying about the rod oil hole position. I know it states that the hole must face the cam shaft. Just can't get it straight in my head. Any one have a picture of an after market 10 under rod installed showing the correct position of the oil hole in rod? I have searched and could not come up with any picture. I just know I am going to have to pull the engine and take a look. Thanks for all the help . Have a great day. :Cry1:
Bob

What's confusing?

Oil hole goes on the camshaft side of the motor..... Nothing confusing about it.

Don't start a new thread.... Unless you just want this one question answered. You should have put it in the engine section under Kohler motors. It's an engine question. I'd move it for you.... but.:RollEyes2:

Edit: I moved it. Sam Mac.:beerchug:

When you put the piston in just make sure the oil hole is pointing to the same said as the cam and you will be fine.

rod oil hole
 

Thanks J-Mech & Tim. Engine is all together and installed in tractor. I just can't remember if the oil hole was pointing to the cam shaft. I surely would have installed it that way. Just can't remember. If installed incorrectly, Will destroy the engine? Have a great day.
Bob

Yes it will.

On the side of the block there is a cover with two bolts in it, you might be able to look through the hole and see the connecting rod and hopefully see the oil hole.

you can pop the cam cover off or if it has a fuel pump plate. should be able to see it. otherwise the first time you rev it up it will start to slow down after initial speed up, its seizing then . saw it happen twice now when guys bought them over cause they couldn't figure out what was wrong. if you are lucky and catch it no harm no foul but they can get pretty expensive

I'm gonna throw some confusion your way. Those who have worked with these engines will know what I mean.

that rod has 2 holes. One has no consequence of pointing it a certain way, this is a hole in the rod beam that is only there to indicate that it is a 10 under rod. The important one will be on any Kohler k series rod , no matter whether standard or undersize
This is the important one, if you want the engine to last. It is in the rod bearing cap. That one HAS to be towards the cam. And yeah, being it (is supposed to) point that direction, you should be able to see it with the cam cover off, you might have to spin the crank it by hand to get it into such a position where it can be seen.
I know what it's like to have those 3 AM "oh, $#1t" moments where I snap up from a dead sleep because of having thoughts of " Oh man, did I do.....…......." and then not be able to fall asleep again because it eats at me...

Mr. Bob, BTDT!!

If you need it, there are very inexpensive borescopes now that plug into your smartphone and fit in a small (1/4 inch) hole. they have lights at the end and you can stick it in a small opening and see what's there on the phone's screen. This one is under $10.

https://www.ebay.com/itm/Endoscope-5...ss!22576!US!-1

As a note, you know the cap is machined to only correctly fit one way right? If it is backwards, you have to spin the whole rod around, not just unbolt and turn the cap.

To all the readers:
The rod cap must go back on the rod in the same position it was when it came out of the box. Mark it if you need to, so you put it together right.

That's pretty neat. Now there's no need to go to the doctor for a colonoscopy. You can do it yourself.

Gives a whole new meaning to the word "innuendo"

That’s the best post in quite awhile!!:biggrin2::biggrin2:

Oil rod hole
 

Went down to the garage yesterday and took off the cam shaft cover. Used a small led light and while turning the crank, I was able to see the hole in the side of the rod. What a relief.

dodge trucker. I installed a aftermarket rod and as well as I remember, it only had one hole and it was in the rod side slanted and went clear through to the bottom of rod at the crank. The Kohler rod that came out of the engine had only one hole and it was in the cap.

SawdustDad. That scope could be a handy item. However, I do not own a smart phone or a lap top. I do not want to become addicted to a phone as many extended Family members have.

J-Mech. I did see that the cap could only be installed one way. That is why I dreaded having the oil hole in the wrong position. I knew I would have to remove the piston and turn it correctly so the oil hole would be correct.

Thanks for all the help. I will be posting my progress to my other thread. Have a great day.
Bob

Mr Bob... you say there was no hole in the "body" of the rod? and you said that it is supposed to be a "10-under"? and that it is an aftermarket rod.
Maybe all are not so marked but as I remember the aftermarket ones that I have seen also have that hole in the body of the rod as an indicator that they are the undersize variant. I hope you aren't (maybe unknowingly?) trying to put a std rod on a 10-under journal....

Oil Hole
 

dodge trucker. The aftermarket rod that I installed had a hole on side of rod that shows it is a 10 under rod. I do not recall seeing any other hole in the rod or cap. I have a poor memory, and another hole could have been in the cap and I not recalled it. Thanks for your help and have a great day.
Bob

Stop confusing Bob with the hole in the center of the rod.

Bob, only hole you need to be concerned with is the one in the cap. You said it is facing the cam, so your fine. Quit worrying.

First pic shows the oil hole in the cap, note that it's on the camshaft side of the engine. Second pic shows the hole in the side of the rod indicating it's .010 under, note that not all .010 rods have the hole in them.

149 Rebuild
 

The rod I installed had the Hole in side of rod. I just didn't recall a hole being in the cap. I am sure it had one as the engine is now running and seems to be doing ok. Has run about 40 minutes now. Thanks for all the help. Have a great day.
Bob