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B valves |
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2011dandd
Silver Level Joined: 25 Jul 2018 Location: Northants uk Points: 106 |
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Posted: 03 Jul 2019 at 4:05pm |
From the front, the radiator end! what comes first? The exhaust or the intake valve?
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Dick L
Orange Level Joined: 12 Sep 2009 Location: Edon Ohio Points: 5087 |
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Exhaust! Look at your manifold and follow the cast tubes.
You have an exhaust valve and then the intake for number one. The next valve is the intake for number two then the exhaust. The intake valves share one port and each cylinder has its own exhaust port. The intake valves are larger. Edited by Dick L - 03 Jul 2019 at 6:26pm |
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TramwayGuy
Orange Level Access Joined: 19 Jan 2010 Location: Northern NY Points: 11445 |
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Intakes are larger, not exhaust.
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Dick L
Orange Level Joined: 12 Sep 2009 Location: Edon Ohio Points: 5087 |
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Sorry about that. |
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2011dandd
Silver Level Joined: 25 Jul 2018 Location: Northants uk Points: 106 |
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Thanks. As I thought.
Just double checking. Had my mag rebuilt and I’m struggling to ge it to fire. Carb not long rebuilt either. Fuel is getting through and there is a spark! |
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Gerald J.
Orange Level Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636 |
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Shop manual should help with details:
http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf Gerald J. |
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2011dandd
Silver Level Joined: 25 Jul 2018 Location: Northants uk Points: 106 |
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Gumming up fuel I think. Very quickly these days
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5754 |
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Could be. Do a simple test... Turn off the fuel, pull all the spark plugs, connect them to their respective wires, and place them away from the plug holes. Turn the hand crank, and observe all plugs, verify that they're all firing. Install ONE spark plug, thread it in about three-four turns by hand, install plug wire, and turn the crank. Observe spark at all OTHER plugs... when you cross top center of compression stroke, make sure you don't see SOME OTHER plug fire. if so, disconnect that plug's wire from distributor cap, move it to the plug that's installed. Remove this plug, insert next one, and repeat 'till you're out of plugs... and note that your mag should CLACK just AFTER you've passed peak compression... not before, and not way after. (if it's off by much, then there's something afoot in the mag's timing) then turn on the fuel, spray a bit of starting fluid or spray oil into the carb throat... it should pop right on, at least for a couple cylinders, to let you know that it IS timed and wired right.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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