(800) 853-2651
SHOP NOW

Wico X 25 degree long lug drive cup

No sources, but a 6274 is a 25 degree cup (not sure if long or short) and in the case you end up with a 6274 dont forget it times a bit different then a non 6274 but still 25 degree cup. On all other cups the straight up center hash mark represents 12 1/2 degrees for setting lag angle while on the 6274 straight up corresponds to only 2 1/2 degrees (other hash marks are still 5 degrees each).

John T
 
Believe thats going to b a short lug. Tractor runs about 195 degrees summertime parading. Figured if I wanted to work it i better reduce timing from 35 to 25 to cool things off a bit
 
Actually running at 195 during a parade is good. Helps reduce plug fouling. If the tractor doesn't overheat doing the other things you use it for, I wouldn't change it. I'm not sure if Wico made a 25 degree drive cup in the long leg style as they were used on gas only tractors, which used the short lug style.
 
I agree with Paul, parading can foul plugs pretty easy and it helps to run at a higher temp plus I lean the carb as much as possible.

As far as run timing, 25 is plenty fast for gasoline. The 35 was used a lot on all fuel tractors when running on low octane Drip Fuel or Tractor Fuel similar to Kerosene.

Of course (for those who may not know), the Lag Angle and adjusting the Lag angle on the rear of the Mag ONLY affects Start/Impulse Timing while the Drive Cup itself (plus rotational timing in governor case plus points gap) affects Run Timing.

John T
 
You might try John Brillman, 2328 Pepper Road ,Mt. Jackson, Va 22842. Phone(toll free) 1 888 274 5562.www.brillman.com He is one of the best mag men I have visited with. He also has a catalog
 
You must log in or register to reply here.

Similar threads

T
Model A wico c mag
Replies
6
Views
273
John T
J
R
Magneto question
2
Replies
22
Views
1K
WeirdDeere
W
I
42 H Magneto question
Replies
5
Views
383
buckeye al
B
T
Model A magneto short or long lug question
Replies
6
Views
624
NoDakInMN
N
D
Case 580E Backhoe Rear Lug Bolts
Replies
2
Views
152
Doug Weigle
D
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top