|
PLEASE PATRONIZE OUR SPONSORS!
|
|||||||
 |
|
|
Thread Tools | Display Modes |
|
#12
02-18-2025, 08:37 PM
|
|||
|
|||
Thought I would just update this thread.
Today I started on a home brew "Kirk Engines" crank balancing project on a K321 AS engine. I machined the crank lobe and made the weight plate. I'll get a few pics in a bit, just to save myself a thousand words. 
|
|
#13
02-23-2025, 12:01 AM
|
|||
|
|||
|
So I got this project done and it wasn’t too bad. The worst part was tapping the 1/4” holes in that very hard cast lobe. It was slow, tedious and nerve wracking, expecting the tap to snap off in the crank at any instant. Next time I’ll definitely buy a solid carbide tap.
I had to add counter weights to balance the bare crank so I could spin it at a decent rpm in the lathe. That was done on the same homemade stand. Pretty easy and accurate too. I used a 3/16” plate for the weight, which I knew would be too heavy, but the plan was to mill it down slowly to fine tunes the balance. I ended up taking .33” off the plate which took it from 100 grams to 80 grams. So in the end I’ll be adding three ounces to the crank to get to the recommended 50% balance factor. It’ll be a few weeks before the engine is up and running, but I’m pretty curious to see if it makes a worthwhile difference.
|
|
#15
02-23-2025, 07:13 AM
|
||||
|
||||
|
On the tap:
Its been my experience a tap made of high speed steel is more forgiving to twisting forces before breaking than a carbide tap. Carbide stays sharp much longer than H. speed steel, but is more brittle. 
|
|
#17
02-23-2025, 05:03 PM
|
|||
|
|||
|
Haha, yes, I've snapped a few taps off in my shop years and it's almost always more time consuming removing them then taking more time to start with!
If this engine responds well to the mod then I will pull the engine out of the 149 and do it too. I want to change the valve guides and re-ring it anyway, so not much more work to pull the crank. I'm of the impression that it shook or vibrated more after the rebuild a few years ago.
|
|
|
|
Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.
This website and forum are not affiliated with or sponsored by MTD Products Inc, which owns the CUB CADET trademarks. It is not an official MTD Products Inc, website, and MTD Products Inc, is not responsible for any of its content. The official MTD Products Inc, website can be found at: http://www.mtdproducts.com. The information and opinions expressed on this website are the responsibility of the website's owner and/or it's members, and do not represent the opinions of MTD Products Inc. IH, INTERNATIONAL HARVESTER are registered trademark of CNH America LLC
All material, images, and graphics from this site are the property of www.onlycubcadets.net. Any unauthorized use, reproductions, or duplications are prohibited unless solely expressed in writing.
Cub Cadet, Cub, Cadet, IH, MTD, Parts, Tractors, Tractor, International Harvester, Lawn, Garden, Lawn Mower, Kohler, garden tractor equipment, lawn garden tractors, antique garden tractors, garden tractor, PTO, parts, online, Original, 70, 71, 72, 73, 76, SO76, 80, 81, 86, 100, 102, 104, 105, 106, 107, 108,109, 122, 123, 124, 125, 126, 127, 128, 129, 147, 149, 169, 182, 282, 382, 482, 580, 582, 582 Special, 680, 682, 782, 782D, 784, 800, 805, 882, 982, 984, 986, 1000, 1015, 1100, 1105, 1110, 1200, 1250, 1282, 1450, 1512, 1604, 1605, 1606, 1610, 1615, 1620, 1650, 1710, 1711, 1712, 1806, 1810, 1811, 1812, 1912, 1914.
Linear Mode
