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46 CJ2A hard crank |
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BallinisShop 
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Joined: 03 Aug. 2017 Location: IL Status: Offline Points: 9 |
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 Topic: 46 CJ2A hard crankPosted: 30 Aug. 2017 at 6:05pm |
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I have this 1946 willys in the shop and just put a new head gasket in it. without plugs its a hard crank without plugs it turns right over. i have a brand new battery and starter.
ANY IDEAS???
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BallinisCustome
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smfulle
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Posted: 30 Aug. 2017 at 6:28pm |
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6 volt? All battery and body/frame electrical, including ground, connections MUST be clean and bright for the 6 volt system to work.
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Oilleaker1
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Joined: 06 Sep. 2011 Location: Black Hills, SD Status: Offline Points: 4412 |
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Posted: 30 Aug. 2017 at 10:48pm |
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If it's 6 volt, you need battery cables twice the gauge of 12 volt cables. The smaller the cable, the more resistance. Make sure the floor or foot push starter button isn't shorting inside it. That too will rob you of current. The starter itself needs a clean commutator and good brush contact with strong brush springs. If the fields are leaking into the case some it will also slow it. re-wraping/insulating the fields can help.
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Green Disease, Jeeps, Old Iron!
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Lee MN
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Joined: 13 Aug. 2008 Location: Harris, MN Status: Offline Points: 4953 |
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Posted: 30 Aug. 2017 at 10:57pm |
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Bushing in the bellhousing supporting the end of the starter shaft good!, a critical item!
Lee |
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LEE
44 GPW-The Perfected Willys 49 2A “If you wait, you only get older” 67 M715 American Made Rolling History |
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Stev
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Posted: 31 Aug. 2017 at 2:31am |
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You state "without plugs its a hard crank without plugs it turns right over" - not a typo?? Can you tell us a little more about this jeep. Was it a running Jeep before the head gasket work? Is this a chain drive engine or a timing gear engine. If you put a ratchet on the crank pulley and turn the engine over by hand with the plugs out does it bind? Does is sound odd? - like a broken timing chain or delamented timing gear or something dragging? Can you feel compression air coming out of each cylinder - are the valves opening and closing? |
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Stev
1946 CJ2A Trail Jeep (The Saint), 1948 CJ2A Lefty Restored |
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Ol' Unreliable
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Joined: 25 Sep. 2016 Location: CO Springs CO Status: Offline Points: 4226 |
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Posted: 31 Aug. 2017 at 3:54am |
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If your distributor's centrifugal advance springs are weak, the distributor could be too far advanced to start easily; it will barely turn over from one cylinder to the next. This is (one of) my problem(s) right now.
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There's a reason it's called Ol' Unreliable
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BallinisShop
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Joined: 03 Aug. 2017 Location: IL Status: Offline Points: 9 |
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Posted: 31 Aug. 2017 at 5:26pm |
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Im sorry it is a 6V system with a brand new battery and starter it cam in for a used motor swap. swaped the motor and had to replace the head gasket. after replaceing head gasket we are getting around to starting it.
WITH the spark plugs in it cranks hard and WITHOUT plugs it turns right over.
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BallinisCustome
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ggordon49
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Posted: 31 Aug. 2017 at 5:59pm |
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For 6V systems, I like to run my battery's ground cable to the starter's mounting bolt.... In my experience, this has provided a noticeable improvement in cranking.
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Willy M
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Joined: 18 July 2017 Location: Dyer, TN Status: Offline Points: 233 |
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Posted: 31 Aug. 2017 at 6:38pm |
Sounds like it has compression then. I've never had a 6v starter that cranked an engine as fast as a 12v.
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cpt logger
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Joined: 23 Sep. 2012 Location: Western Colorad Status: Offline Points: 3043 |
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Posted: 31 Aug. 2017 at 7:30pm |
Bolding mine. Try this, with the plugs in, disconnect the coil wire from the distributor, now try cranking it. If it still cranks hard, there may be something wrong with the crankshaft, or the connecting rods. If it cranks easy, look at your timing. This would include weak springs in the distributor. IHTH, Cpt Logger. |
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Red Willy
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Posted: 31 Aug. 2017 at 7:45pm |
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Distributor rotation is CCW. you do have the plug wires in the correct order?
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Glen
49 CJ3A |
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Unkamonkey
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Joined: 23 Mar. 2016 Location: Greeley CO Status: Offline Points: 2093 |
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Posted: 31 Aug. 2017 at 8:54pm |
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[QUOTE=Ol' Unreliable] If your distributor's centrifugal advance springs are weak, the distributor could be too far advanced to start easily; it will barely turn over from one cylinder to the next. This is (one of) my problem(s) right now.
[/QUOTEit I tried to send you a PM but the system said it couldn't find you. On another thread you mentioned Mile Nigh Jeep Rebuilders. I used to work there so I knew the Big Cat fairly well. |
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uncamonkey
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BallinisShop
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Posted: 01 Sep. 2017 at 1:40pm |
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I Believe i have the timing right. i have removed the starter button and am just jumping the wires and it seems to be cranking over alot better now. but not it just want to pop here and there. doesnt want to start. i have fuel spark and compression. not sure the spark is the strongest tho. what would it take to move it over to a 12v system
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BallinisCustome
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Oilleaker1
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Joined: 06 Sep. 2011 Location: Black Hills, SD Status: Offline Points: 4412 |
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Posted: 01 Sep. 2017 at 2:00pm |
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I would static time it and put in a new condenser and points made by Echlin. set the timing to 5 BTDC. then gap the points to .020, retard and then advance the distributor until you just see the beginning of a gap in the point set. lock it down. It should fire and be very close.
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Green Disease, Jeeps, Old Iron!
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athawk11
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Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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Posted: 01 Sep. 2017 at 4:15pm |
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Is your "pop" // backfire out of the carburetor or the tailpipe?
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1- 1946 CJ2A
2- 1949 CJ3A |
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BallinisShop
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Joined: 03 Aug. 2017 Location: IL Status: Offline Points: 9 |
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Posted: 01 Sep. 2017 at 6:50pm |
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I dont know what it is but everytime i post on a forum of anytime as soon as i go back out to the shop. nothing in wrong. went back out there jumped in it pushed the button and she fired right up... smh. someones messing with me.
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BallinisCustome
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Fred Coldwell
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Joined: 18 Nov. 2005 Location: Denver, CO. Status: Offline Points: 437 |
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Posted: 02 Sep. 2017 at 5:36pm |
You just had to pay a small acknowledgement tribute to TheCJ2APage.com gods before they would allow your jeep to start up. Be sure to post here weekly, perhaps every Sunday.  |
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Happy Jeep Trails,
Fred Coldwell Denver, CO 1944 CJ2-09 - X-33 1945 CJ2-26 - X-50 |
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BallinisShop wrote: