distributor & timing issues - Chevy Nova Forum
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Old 30th-December-2013, 02:16 PM   #1
smithd7

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distributor & timing issues

Replaced intake on my '63 nova with a 350 sbc
engine on TDC with #1 cyl. ready to fire,rotor is a little
before #1 cyl tower on dist. starts up just fine,but when
using a timing light to set timing the mark on the damper,
the engine runs great and at highest vacuum with the mark
well advanced and off the timing pointer.When I rotate dist.
clockwise the mark moves toward timing marks on pointer
and right around 12 to 10 degrees BTDC the engine will stall. I
can't get it any closer to TDC.
Wires are correct and in right firing order on dist. And #1 cyl is
on compression stroke.
Can anyone help me with this problem?


Last edited by smithd7; 31st-December-2013 at 04:18 PM. Reason: senior moment
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Old 30th-December-2013, 03:38 PM   #2
wskaiser
 
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Did you ever time this engine before the intake change using a light? It sounds like the timing indicator pointer -balancer may be mismatched.
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Old 30th-December-2013, 03:50 PM   #3
smithd7

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Originally Posted by wskaiser View Post
Did you ever time this engine before the intake change using a light? It sounds like the timing indicator pointer -balancer may be mismatched.
No, I never did. It just ran so good I never thought of it.
If they were mismatched would TDC and mark on damper with
#1 cyl on compression stroke still all line up ?
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Old 30th-December-2013, 03:55 PM   #4
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Is it possiable the outer ring of the balancer is has slipped? If it had been a while since you checked the timing the ring may have slipped.
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Old 30th-December-2013, 04:02 PM   #5
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Are you checking it with the vacuum advance disconnected, if not your timing will be advanced.
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Old 30th-December-2013, 04:09 PM   #6
smithd7

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Is it possiable the outer ring of the balancer is has slipped? If it had been a while since you checked the timing the ring may have slipped.
If the outer ring of the balancer has slipped wouldn't that show up when
I bring it up to TDC on timing pointer ?
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Old 30th-December-2013, 04:24 PM   #7
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Are you checking it with the vacuum advance disconnected, if not your timing will be advanced.
Yes it is disconnected
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Old 30th-December-2013, 04:53 PM   #8
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Get a piston stop. Read directions. Verify true top dead center.
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Old 30th-December-2013, 05:02 PM   #9
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the dist is out 1 tooth on the gear
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Old 30th-December-2013, 05:32 PM   #10
smithd7

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the dist is out 1 tooth on the gear
That's kinda what I was thinking. So am I right in thinking that I am
one tooth too far ahead ?
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Old 30th-December-2013, 07:39 PM   #11
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Yes it is disconnected
Did you plug the vacuum hose so it doesn't suck air?
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Old 30th-December-2013, 07:54 PM   #12
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Quote:
Originally Posted by smithd7 View Post
That's kinda what I was thinking. So am I right in thinking that I am
one tooth too far ahead ?
That is not going to make a difference as long as you are able to rotate the dist. body far enough to get the timing marks lined up. You can drop the dist. in any position and wire accordingly.
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Old 30th-December-2013, 08:13 PM   #13
smithd7

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Did you plug the vacuum hose so it doesn't suck air?
I have a vacuum gauge hooked up to it.
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Old 30th-December-2013, 08:25 PM   #14
smithd7

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That is not going to make a difference as long as you are able to rotate the dist. body far enough to get the timing marks lined up. You can drop the dist. in any position and wire accordingly.
O.K. now bear with me. If I drop it in any position #1 still has to be
TDC on compression stroke right ?

So what would happen if I left the dist. where it is now and rewire ?

This is definitely a learning experience,thanks for your help
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Old 30th-December-2013, 08:55 PM   #15
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You can drop the distributor in in any position (Make sure it drops into the oil pump shaft and sets flush) and have the #1 piston on top dead center of compression stroke and put the #1 plug wire in the distributor cap where ever the rotor is pointing and then wire each of the remaining plug wires clockwise from that position following the firing order.

If you have room to rotate the distributor with out the vacuum advance can hitting anything there is no need to move the distributor from where you have it dropped in now. There is something wrong with the timing pointer or balancer if you can get it to run good but just not have the timing marks lining up.
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Last edited by wskaiser; 30th-December-2013 at 09:03 PM.
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