CJ2A Timing |
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Britboyo
Member Joined: 30 Jan. 2013 Location: New York Status: Offline Points: 3 |
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Posted: 30 Jan. 2013 at 5:33pm |
hi, i'm new to the forum and have some timing questions.
i have a CJ2a which i dont know when it last ran. i set number one piston at TDC when the head was off. but forgot to check the valves were closed. when i look at the flywheel i can see the ign mark. when i look at the crankshaft pulley i can see a notch on the inboard pulley at about 5 deg BTDC. but when i look at my rotor arm its point to 12 o'clock not 5 o'clock. Points are just opening. so i wired the distributer from there anti clockwise. question: can i be sure i'm on the compression stroke or do i need confirm that? or do i pull the distributor and rotate 180 deg? and then re-wire the spark plugs?
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Schimms15
Member Joined: 17 Jan. 2011 Location: milwaukee, Wisc Status: Offline Points: 2953 |
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You can just move the plugs to the correct hole for when that one is on compression. I had to for my f head.
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46 2a
51 truck project named Karen |
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F Bill
Member Sponsor Member x 2 Joined: 05 Dec. 2005 Location: central Texas Status: Offline Points: 7752 |
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Go to the tech Faq section and read Sean's Geico timing guide. Simplest way to do it.
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If you haven't checked out the tech FAQ section, go to:
http://www.thecj2apage.com/forums/tech-faq_forum57.html for a lot of great stuff you need to know!! |
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Britboyo
Member Joined: 30 Jan. 2013 Location: New York Status: Offline Points: 3 |
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thanks.
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9651 |
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With #'s 1&4 at TDC, you can tell which one has both valves closed by putting a piece of hose that fits snug into the spark plug hole and blowing in it. If the valves are open, the air will leave thru both valves. You might even hear it. If they're closed pressure will build in the chamber. BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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JeepRoger
Member Joined: 26 Oct. 2009 Location: Atascadero, CA Status: Offline Points: 1165 |
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Just as a safety measure, I wanted to point out that you can't just pull the distributor and rotate the shaft 180° - it only goes in one way unless you re-orient the oil pump gear. So best to check out other recommendations first. R
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Roger in California
'46 CJ2A 38503 '47 CJ2A 142084 '46 T3C Bantam trailer |
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