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08-29-2019, 02:45 PM | #1 |
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Join Date: Sep 2017
Location: Edgewood, New Mexico
Posts: 39
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Spark rod rubbing
I was messing with taking some pics of the engine for a fiend and noticed the spark lever rod is rubbing on top of one of the engine Nuts.
I would assume that Henry did NOT intend for this to be so. I was looking for how the rod should make the journey form the steering assemble to the distributor but could not find a detailed enough diagram or one I could actually see! I searched the forum and couldn't even get a hot on "rod" Thanks, Tim
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Tim 1928 Sport Coupe |
08-29-2019, 03:34 PM | #2 |
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Join Date: May 2010
Location: Waynesville, NC
Posts: 786
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Re: Spark rod rubbing
I have the same issue, and I think it is caused by my car's sagging frame. That pulls the steering column down a tad....
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08-29-2019, 03:45 PM | #3 |
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Join Date: Sep 2017
Location: Edgewood, New Mexico
Posts: 39
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Re: Spark rod rubbing
Interesting hypothesis Chuck, but how can you tell if the frame is sagging?
on mine, the previous owner seems to have bent the rod slightly to compensate but to no avail.
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Tim 1928 Sport Coupe |
08-29-2019, 06:16 PM | #4 |
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Join Date: May 2010
Location: Waynesville, NC
Posts: 786
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Re: Spark rod rubbing
I too have bent the rod to compensate.... Better brains than I have covered the sagging frame issue. Just do a 'find' in this forum about it. It's the 'Search this Forum' button in the red horizontal line located about the middle of the opening page.
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08-29-2019, 06:19 PM | #5 |
Member
Join Date: Sep 2017
Location: Edgewood, New Mexico
Posts: 39
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Re: Spark rod rubbing
Thanks chuck I know where the search button is.
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Tim 1928 Sport Coupe |
08-29-2019, 06:46 PM | #6 |
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Join Date: Jun 2015
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Re: Spark rod rubbing
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The 7 tooth housing is not adjustable. Some repro rods are too short. Some folks bend the spark control arm up slightly which can change the spark rod height but may change the travel length also. If the body is not shimmed properly on the frame or the cowl too low, then that coupled with frame sag as mentioned can affect the steering column position. Also, check if the steering column bolts to the frame have wallowed out the holes with the upper bracket and pitman arm disconnected. |
08-29-2019, 09:56 PM | #7 |
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Join Date: Jul 2018
Location: Spring Grove, Illinois
Posts: 1,371
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Re: Spark rod rubbing
Funny that this was brought up as I just had a problem like this. My car had a repro spark rod on it (the one from the column to distributor) and rather than adjusting the column or compensating, they chose to bend the rod a little more than slightly. I could deal with it not looking right but I started to have loss of power issues. I discovered this week that my engine had turned into a 3 cylinder with that rod rubbing against the spark plug shorting out a cylinder. Took a nice straight original and it fit perfectly.
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