Archive through September 01, 2014

[dtanner]

I have a non running 147 that ran when stored three years ago

. I have checked the coil and points and have power no spark. Could the condenser keep it from running?? Thanks my memory has left me lol.

 

[joligschlaeger]

Donald;
I would clean the points with a point file or burnishing blade. They do get a "crust" when not used. The point file is a short thin file, can be purchased at an auto parts store, burnishing blade is a narrow, thin flexible blade, very similar to a nail file tool the ladies use on their nails, only a lot thinner and narrower. HTH. Joe

 

[mgwin]

Donald,
I would say "yes" on the condenser question. BTDT
Neither the points or condenser are all that expensive.

 

[jlspicer]

Don,
You could also run a dollar bill between the points in a pinch. It works to do a quick clean. BTDT. Or you could use a Bennie if ya want. That's what Lew uses.

 

[jchamberlin]

Dan C. May: Fix the #30 for the customer for at least a couple of reasons.

1. IH fitted #26 to 10 HP and 12 HP motors, but used #30 for the 14 HP motors (I'm not sure about the 16 HP Kohlers).

2. Because . . .
I believe the "26" and "30" refer to the carb throat diameter in millimeters. A carburetor with a throat size of 30mm can flow a lot more than a carburetor with a throat size of 26mm.

Nic compares the difference to carburetors flowing 650 and 750 cubic feet per minute and states that the carb's suitability for each application depends on the state of the engine's tune. That is, you can "hop up" an engine designed for 650 cfm to handle, or even require, a 750 cfm carb; or, more to the point, de-tune a 14 HP motor to use a carburetor designed for a 12 HP motor.

Just focussing on the carb comparisons, I must note that the difference between 26mm and 30mm for the throat size is not the same as comparing flow rates of 650 and 750 CFM. At first glance, it might appear a valid comparison: 650 is 86% of 750 and 26 is 86% of 30, but remember the units. 650 & 750 are units of flow; 26 & 30 are throat diameters. If we compare the AREA of a 26mm carb throat to the area of a 30mm carb throat we see that the difference is more like 75% (pi*r*r). The fuel/air mix doesn't see 26mm as only 4mm less than 30mm, it sees it as a hole 175 square millimeters smaller than what it needs (531 mm2 for 26mm throat versus 706 mm2 for 30mm throat).

Bottom line, a #26 carb will <u>not</u> work on a 14 HP Kohler where a #30 will; and a #30 carb will work on a 14 HP Kohler where a #26 will not.
On the other hand, I think Nic could probably get a 12 HP up to where it needs a #30; but I bet he would have a hard time getting 14 HP down to where it was satisfied with a #26.

Note: A qualified engineer would look at more than just displacement, but also the crank's "throw" which affects the speed of the piston in the barrel. A bigger crank will have more torque, but will also suck more gas. I don't have the specs of the K301 and K321 in front of me, but any hot rodder (read "puller") worth his salt would be looking at the mechanicals before fitting the carb, recognizing each change's implications for carburetion.

 

[nbextermueller]

Lol! Are you kidding me! Most NQS pullers can get a 12hp to need a 56mm 2-stroke motorcycle carb... That 12 HP could put 40-50 horses out on alcohol.

And yes, I could probably detune a 14hp to run great on a #26 with a really lame cam. But no one would want to use it.

Jeremiah is right in his number comparison. While they don't describe auto carbs in MMs and they don't describe tractor Walbro/Carter's in CFM. He was right on in his point.

 

[sblunier]

Please remember that early 14hp Kohlers came from the factory with 26 carbs, so the 26 vs. 30 is marginal on a 14.....huge on something bigger.

Tune and cleanliness has as much to do with the performance discussed in the OP as anything else.

 

[jstertz]

Quick Question guys--I'm interested in buying a GD tractor that has the rear PTO. It seems to be a novelty on the Cub Cadets. Did IH have any attachments that could be used on them? Did the aftermarket develop any attachments to work on them like a tiller or a brush hog? Just Curious...

 

[dfrisk]

JOSHUA - NO... IH did not make any attachments for the rear PTO, And the only attachment I've ever seen for them is the Hub City gearbox to convert them to ASAE specifications turning 540 RPM to correct way, not 515 RPM the wrong way.

The 2000 RPM used on the SGT's there were several attachments for... rough cut rotary mowers, rototillers.

 

[rmcshane]

JOSH- I have heard through many people (but not been in person to view) that farmers that had IH Cub Cadets with rear PTO's would run their hay elevators with them. But, many would have to attach the PTO shaft to the opposite side of the hay elevator (or in my case I would have to on a New Idea elevator in my yard right now).