YM336D - Started knocking loud while tilling

[Domush]

The honeing and reringing is pretty common though for back yard guys

I'm no back yard mechanic! I'm doing this all in my front yard :laughing:

your doing a fine job, and you sure your a web designer?

I am now. I'm one of those people who gets bored easily. I have certs in just about every small engine maker out there from a past life, so I'm not completely new to engines, just the ones you bother rebuilding.

This forum is better in that i can put many large pics on here at one time

Some advice from a web developer.. never bother uploading images to the forum. Host them elsewhere and link them in. That way you can re-size on the fly without ruining the original detail. I use Picasa (google) for mine. They have a handy desktop app which allows you to sync online as well as the usual crop/rotate stuff. I'd definitely recommend giving it a try. Then you simply include the images by viewing them online, right-clicking, selecting "Copy image link", coming back to your post, clicking the "Insert image" icon and pasting the link in. Picasa is great because you can resize images via the link itself. For example, I can do any of the below simply by editing the links:

Example picasa image link: lh6.googleusercontent.com/-rNNxfZsOI1s/T1Kjb8eky4I/AAAAAAAAHIg/DcNOKpVLabQ/s640/2012-03-03%252014.57.14.jpg

Note the "640" part. That is the resolution (size). If you want it smaller, change it to 512/480/320/240 or anything you wish. A reason to do this would be this before and after:

or even

All of that and i didn't have to re-upload a single image, just edit the URL I pasted for each photo. No manual uploading or resizing.

 

[284 International]

The above is one of the more useful posts I've ever read here. I didn't know the simplicity in resizing about Picasa. Thanks! I may have to switch my photo hosting now.

 

[clemsonfor]

As always, any advice is appreciated. I'll see if I can't find a ball hone to borrow on Monday. Maybe a local diesel place or even the auto guy down the road will have one I can borrow. I hate paying $50 for one for one use. I'd rather that $50 go towards the break-in oil change.

Cheers!

AUTOzone or advance auto parts will Loan tools. They basically make you buy the tool, but once returned they give you ALL your money back so its not even a rental really. Orielys also does this but i have had words with them as they only allow you to keep it a week if the cashier goes by the book.

 

[JimRB]

Here is a theory. A hone that has three stones will knock off the highest parts and leave the low spots until you knock off more of the high spots. It does an averaging function. With the high spots knocked off the rings have a better chance of seating as the high spots are not in the way. A ball hone will knock everything high and low giving you the illusion that your cylinders look great but the rings are never going to seat on the honed low spots. When they bore a cylinder they use rigid cutters don't they? A three stone hone sort of mimicks that?

I had a VW engine that had some corrosion in the cylinders that did not hone out. Engine always used a bit more oil than I liked and did not have quite as much power as I thought it should have. Basic compression was at the high end of spec. I tried to build a leakdown tester but never got it to work properly. Now I have a diesel car, tractor and truck. None of which seem to use oil or have power problems. The VW only has 310,000 miles on it so I guess in another 2 or 300,000 miles I may have oil or compression issues.

 

[Domush]

AUTOzone or advance auto parts will Loan tools. They basically make you buy the tool, but once returned they give you ALL your money back so its not even a rental really. Orielys also does this but i have had words with them as they only allow you to keep it a week if the cashier goes by the book.

Thanks for the tip. Others have already mentioned it. I got the hone from auto zone. They don't have the ball hone, though. None of the tool loaners do

Ps, try not to quote long posts, as it just makes people scroll needlessly. Just quote what you are referencing and remove the rest. I'd recommend editing your post to remove most of that quote.

 

[Domush]

Here is a theory. A hone that has three stones will knock off the highest parts and leave the low spots until you knock off more of the high spots. It does an averaging function. With the high spots knocked off the rings have a better chance of seating as the high spots are not in the way. A ball hone will knock everything high and low giving you the illusion that your cylinders look great but the rings are never going to seat on the honed low spots. When they bore a cylinder they use rigid cutters don't they? A three stone hone sort of mimicks that?

I had the same thought as well, but there is a hitch in the 3 stone theory.. The stones pivot. So when you run over the high area the blade pivots and forces the edge of the lower end of the blade into the non raised area, causing it to dig in and essentially ignore the high area. In effect, it exacerbates the problem.

I agree completely on the ball hone theory. The only way I see a ball home helping is if the high areas don't encompass the entire circumference of the cylinder. Then the balls will be suddenly forced onto the high spots, causing them to bite in from sheer inertia.

Using that theory, I think car doc is right, the ball hone has the best chance of evening out the cylinder. I'm open to corrections, obviously. I'm no physics expert.

 

[tcartwri]

Domush, not to be a pessimist, but I would be exploring a replacement for at least two if not all of those sleeves. #2 is just not going to fly.

 

[JimRB]

I had the same thought as well, but there is a hitch in the 3 stone theory.. The stones pivot. So when you run over the high area the blade pivots and forces the edge of the lower end of the blade into the non raised area, causing it to dig in and essentially ignore the high area. In effect, it exacerbates the problem.

I agree completely on the ball hone theory. The only way I see a ball home helping is if the high areas don't encompass the entire circumference of the cylinder. Then the balls will be suddenly forced onto the high spots, causing them to bite in from sheer inertia.

Using that theory, I think car doc is right, the ball hone has the best chance of evening out the cylinder. I'm open to corrections, obviously. I'm no physics expert.

Now I have to rethink about my flat stone theory. I still supect it works better than ball but that is pure speculation. Technical Ball hone Vs. Stone Hone??? - THE H.A.M.B.

 

[Car Doc]

Ball hone is the preferred method of breaking glaze. It will follow the contours the rings made.

 

[clemsonfor]

Ps, try not to quote long posts, as it just makes people scroll needlessly. Just quote what you are referencing and remove the rest. I'd recommend editing your post to remove most of that quote.

Done, never thought of it thatway. Sometimes i cut down to a sentence most of the time i dont. I will try and make a habit of it now though.