Would a stretched chain have had timing retarded?
#1174986
02/08/12 09:23 PM
02/08/12 09:23 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
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I want to make sure my car fires on the first go when I'm done reassembling it from my timing chain/cam change. My timing chain was ridiculously loose - I could almost pull it off with the gears still bolted in. I got my distributor back in with all of my marks on the inner shaft and body lined up after I got my new cam in the block and the new gears lined up.
Before I started, I had the initial timing set at about 11 degrees BTDC. Assuming my chain had the cam off by something like 8 degrees, should I twist my distributor a little in one direction or the other to rough my initial back to something that will start reliably?
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Would a stretched chain have had timing retarded?
[Re: Dodgem]
#1174988
02/08/12 09:36 PM
02/08/12 09:36 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
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Eugene, Oregon
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Done and done... believe me I'm not doing this job twice any time soon
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Would a stretched chain have had timing retarded?
[Re: Secret Chimp]
#1174989
02/08/12 09:38 PM
02/08/12 09:38 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,040
Lincoln Nebraska
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I'd suggest 10BTDC mild cam/15 wild cam. W a breaker bar come up on 10 or 15 easy keeping tension on the chain then twist the dist to set the magnet dead even w the tooth that places the vac adv in the correct general location and places the rotor on or near on the #1 plug wire cap terminal and note that vac adv will shift the rotor phasing from that point, CW (BB) and CCW on a small block EDIT that's 6 o'clock and 12 o'clock for #1 to be firing. Dot to dot #6 is firing
Last edited by RapidRobert; 02/08/12 09:47 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Would a stretched chain have had timing retarded?
[Re: Secret Chimp]
#1174992
02/08/12 09:49 PM
02/08/12 09:49 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,040
Lincoln Nebraska
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Actually you're doing great, it'll be up & running in no time. Yes you want it to fire off immed
live every 24 hour block of time like it's your last day on earth
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Re: Would a stretched chain have had timing retarded?
[Re: Secret Chimp]
#1174995
02/09/12 04:51 PM
02/09/12 04:51 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
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master
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Memphis
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When the Dots line up, the engine is set to fire on #6, NOT #1.
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Would a stretched chain have had timing retarded?
[Re: Secret Chimp]
#1174996
02/09/12 05:07 PM
02/09/12 05:07 PM
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Joined: Jan 2003
Posts: 75,015
U.S.S.A.
JohnRR
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Quote:
Done and done... believe me I'm not doing this job twice any time soon
I'll ask the really STUPID question since it seems everyone before me is AFRAID to ask it ...
If you aren't doing it again anytime soon WHY are you reusing an obviously spent timing chain ????
If it is the original timing chain it is an Alum gear that WAS plastic coated , if the chain was that loose the plastic has fallen off , it's going to jump a tooth and you will bend valves ...
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Re: Would a stretched chain have had timing retarded?
[Re: JohnRR]
#1174997
02/09/12 07:38 PM
02/09/12 07:38 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
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Eugene, Oregon
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Quote:
Quote:
Done and done... believe me I'm not doing this job twice any time soon
I'll ask the really STUPID question since it seems everyone before me is AFRAID to ask it ...
If you aren't doing it again anytime soon WHY are you reusing an obviously spent timing chain ????
If it is the original timing chain it is an Alum gear that WAS plastic coated , if the chain was that loose the plastic has fallen off , it's going to jump a tooth and you will bend valves ...
No no, you misunderstood my question. I'm not reusing the chain. I marked my distributor position before I pulled it out to change out my camshaft and old timing chain/gears. Since the old timing chain was so stretched and not keeping the cam and distributor in proper phase with the crank, I was wondering if my marks would not be accurate for where the timing will actually be after installing a new tight chain and gear set, i.e. if it would have too little advance due to being marked based off of the old chain's positioning.
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Would a stretched chain have had timing retarded?
[Re: bboogieart]
#1174999
02/09/12 08:14 PM
02/09/12 08:14 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
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Yep I got that. This is my first time doing this sort of thing on a V8, sometimes I ask the dumb questions rather than ASSume if I'm not sure.
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Would a stretched chain have had timing retarded?
[Re: Secret Chimp]
#1175001
02/09/12 09:58 PM
02/09/12 09:58 PM
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Joined: Jan 2003
Posts: 75,015
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
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U.S.S.A.
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Quote:
Quote:
Quote:
Done and done... believe me I'm not doing this job twice any time soon
I'll ask the really STUPID question since it seems everyone before me is AFRAID to ask it ...
If you aren't doing it again anytime soon WHY are you reusing an obviously spent timing chain ????
If it is the original timing chain it is an Alum gear that WAS plastic coated , if the chain was that loose the plastic has fallen off , it's going to jump a tooth and you will bend valves ...
No no, you misunderstood my question. I'm not reusing the chain. I marked my distributor position before I pulled it out to change out my camshaft and old timing chain/gears. Since the old timing chain was so stretched and not keeping the cam and distributor in proper phase with the crank, I was wondering if my marks would not be accurate for where the timing will actually be after installing a new tight chain and gear set, i.e. if it would have too little advance due to being marked based off of the old chain's positioning.
That's why they make timing lights ... you have one correct ?
You should be close enough as long as you don't install it 180 out .
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Re: Would a stretched chain have had timing retarded?
[Re: Moparmaniacc]
#1175002
02/09/12 10:34 PM
02/09/12 10:34 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Balt. Md
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Quote:
My '69 Sport Satellite 318 had a stretched timing chain and messed me up big time until I figured out the problem. To this day I dont trust timing lights!
What is it you dont like about timing lights. They only tell you when the plug fires that you have it on. If you have timing on 10 BTDC and the chain slacks 10 degrees then the dist will be retarded also since the cam drives it and the timing would be at 0 instead of 10 BTDC. I dont get what you are blaming the timing lite for ? Ron
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