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68 bird 400 timing marks at 12 and 12 engine not starting help!
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Posted: 11/06/09 04:01 AM
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Hello I got a ragtop 68 bird with a 400 that sat for 15 years i had it running once or twice but now I cant get it to start. I replaced almost everything, plugs wires dist, coil, qjet,..., I was going to replace the points with an electronic unit but somehow it got fried and I went back to points. Putting the dist back in I brought up the number one to TDC on compression got spark and fuel but its not starting. I finally pulled the timing cover and found the timing marks at 12 on the cam and 12 on the crank! Doing a bit of searching here I found someone saying the timing should be at the number 6 plug not the number one. any ideas or comments would be really helpful! thanks Steve
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dtierney
New User
| Posts: 18
| Joined: 09/08
Posted: 11/07/09 05:16 PM
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With the timing marks both at 12 o'clock you are at #1 TDC. If you now rotate the crankshaft 360 degrees the crank timing mark will be at 12 and the cam timing mark will be at 6 because the cam rotates at half the crank speed. This is #6 TDC. You could install the cam in either position and still be correct, (the same). Just make sure the distributor rotor is pointing at #1 plug wire when both timing marks are at 12 o'clock.
Dave
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Posted: 11/09/09 12:19 PM
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For all your timing questions check out the following website set up by the folks at MSD. Copy and paste the following into your web browser:
http://www.setyourtiming.com/
Hope this helps you out.
* * Frank the Crank www.amberlightgarage.com
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Posted: 11/09/09 02:53 PM
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Dave thanks for the reply. Just to make this perfectly clear, once everything is back together all I have to do is bring the number six cylinder to TDC on the compression stroke and set my dist to 6 rather than one? If this works I owe you a cold one! Thanks Steve
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dtierney
New User
| Posts: 18
| Joined: 09/08
Posted: 11/09/09 04:47 PM
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That would be correct. Its not uncommon two get distributors 180 degrees out of phase.
Dave
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