Re: Tooth off on timing chain?........
[Re: dustergirl340]
#440247
08/16/09 09:26 PM
08/16/09 09:26 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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put your marks on TDC & see where the rotor is (whether #1 or #6) it'll be way off from the underside of the dist cap terminal. More details, what happened.
live every 24 hour block of time like it's your last day on earth
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Re: Tooth off on timing chain?........
[Re: RapidRobert]
#440248
08/16/09 09:53 PM
08/16/09 09:53 PM
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Joined: Sep 2004
Posts: 22,873 Chicken coop
dustergirl340
OP
Chicken Little
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OP
Chicken Little
Joined: Sep 2004
Posts: 22,873
Chicken coop
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Quote:
put your marks on TDC & see where the rotor is (whether #1 or #6) it'll be way off from the underside of the dist cap terminal. More details, what happened.
Already done.
We set the timing at 35* at 3,000 rpm. It has very low vacuum (9"). But if you advance the timing to 42* we can get the vacuum up to 17".
Engine has a miss between 1,800 to 2,300 rpm. The engine runs better with a lot of advance but still has that stutter.
We've ruled out vacuum leaks.
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Re: Tooth off on timing chain?........
[Re: RapidRobert]
#440249
08/16/09 09:53 PM
08/16/09 09:53 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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I think if you pull the fuel pump you can feel for the slop in the chain. Does this maybe have the phenolic top sprocket? If steel, there's very little chance that it's slipped.
Quickest way, is that IF you know where the timing is supposed to be, and it's way off, it's slipped.
Take a wrench and rotate the engine cw/ ccw against the chain "slop." If it's 10* movement or more, I'd be suspecting slippage.
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Re: Tooth off on timing chain?........
[Re: marvo451]
#440259
08/17/09 01:11 PM
08/17/09 01:11 PM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Are you sure the harmonic balancer hasn't slipped on its rubber ring, giving you incorrect timing with the timing light?
He already stated above that the TDC mark is right on with piston position.
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Re: Tooth off on timing chain?........
[Re: dustergirl340]
#440261
08/17/09 02:55 PM
08/17/09 02:55 PM
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Joined: Dec 2007
Posts: 7,759 So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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Did this happen after the chain set was replaced? I believe there was a run of spockets (sorry don't know which manufacter) that were mis-marked out of the box. It maybe worth it to degree your cam.
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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Re: Tooth off on timing chain?........
[Re: dustergirl340]
#440262
08/17/09 04:26 PM
08/17/09 04:26 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
just checked, the timing chain (new chain) is dead on. Harmonic balancer is good
I could've sworn I posted this. Just exactly how did you check this?
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Re: Tooth off on timing chain?........
[Re: Posest]
#440266
08/17/09 11:03 PM
08/17/09 11:03 PM
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Joined: Nov 2005
Posts: 15,118 85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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I say slop in the distributor. Run a compression check to see if you didn't bend a valve.
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: Tooth off on timing chain?........
#440267
08/18/09 07:11 AM
08/18/09 07:11 AM
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Joined: Jan 2003
Posts: 8,180 Detroit, MI
CokeBottleKid
master
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master
Joined: Jan 2003
Posts: 8,180
Detroit, MI
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Quote:
Quote:
just checked, the timing chain (new chain) is dead on. Harmonic balancer is good
I could've sworn I posted this. Just exactly how did you check this?
Yeees, how did you check this? Need more backround, is there something new or is this the old motor you've been running 13s with for years?
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Re: Tooth off on timing chain?........
[Re: dustergirl340]
#440269
08/18/09 12:18 PM
08/18/09 12:18 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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I've seen results like this if the distributor drive gear is off a tooth, it gives all kinds of wonky timing values.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Tooth off on timing chain?........
[Re: CokeBottleKid]
#440272
08/19/09 08:25 AM
08/19/09 08:25 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
distributor drive gear location doesn't matter so long as the distributor vacuum advance has room to allow movement for proper timing setting...
Hers must have been severely worn, or maybe she fixed another problem inadvertently when she replaced it...
it does and it doesn't, depending on where you put the plug wires. if the DD gear is off (not pointing to #1 at TDC of #1), but you put the plug wires in the same orientation as usually shown, it will show odd advance numbers, because the rotor isn't synced up with the mark on the balancer. if you orient the plug wires so that at TDC of #1, the #1 plug wire is over the dizzy rotor, things will look OK relative to the timing mark on the balancer.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Tooth off on timing chain?........
[Re: patrick]
#440273
08/19/09 11:41 AM
08/19/09 11:41 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Quote:
distributor drive gear location doesn't matter so long as the distributor vacuum advance has room to allow movement for proper timing setting...
Hers must have been severely worn, or maybe she fixed another problem inadvertently when she replaced it...
it does and it doesn't, depending on where you put the plug wires. if the DD gear is off (not pointing to #1 at TDC of #1), but you put the plug wires in the same orientation as usually shown, it will show odd advance numbers, because the rotor isn't synced up with the mark on the balancer. if you orient the plug wires so that at TDC of #1, the #1 plug wire is over the dizzy rotor, things will look OK relative to the timing mark on the balancer.
You should be a politician. The "simple" way to say this is, that it "will be out of time" if the wires are in the wrong hole.
The ONLY REASONS that any factory manual specifies a certain way to install a dist. are:
So the assembly line folks can wrench, repeat
So the vac. advance sits OK
So the plug wires "lay" right
So a tuneup mech. sees what he expects to see.
There ARE a few engines that matter. One series are the GM V6's. On some of these engines, the dist. towers are "paired" two towers closer together, then a wide space, so if you get the wires off just one hole, it just won't run right.
When I got my first car, a 57 Chev 265, I didn't know there was a "right" way. I used to just drop the dist in and go.
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