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Distributor cap with slight movement
#1349344 Mon Mar 09 2020 01:29 PM
Joined: Aug 2019
Posts: 35
K
'Bolter
Hi Folks, Just got my truck back from local restoration shop where I had them perform a tune-up. They purchased the ignition parts from "Standard".
What I noticed when poking around under the hood, that if I grab the distributor cap, I can move it from side to side about 1-2 mm, while its locked down.
Seems like that's a bad thing.

Should there be any play in movement of the cap?


1954 Chevy 3100
Re: Distributor cap with slight movement
Kevin13Shaw #1349346 Mon Mar 09 2020 01:51 PM
Joined: Apr 2005
Posts: 10,043
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Yes, it’s normal, if your referring to being able to turn it slightly.🛠


Martin
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'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



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Re: Distributor cap with slight movement
Kevin13Shaw #1349353 Mon Mar 09 2020 02:18 PM
Joined: Feb 2004
Posts: 23,004
H
'Bolter
A little rotation isn't a bad thing. rocking side to side isn't good, as it can result in the rotor hitting the cap terminals inside. Tighten the spring clips a little by bending them with a pair of needle nose pliers. Make sure the cap is fitting all the way down onto the distributor housing- - - -sometimes the counterbore at the base of the cap needs to be scraped a little so it can slip over the housing correctly.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Distributor cap with slight movement
Kevin13Shaw #1349450 Tue Mar 10 2020 01:37 PM
Joined: Aug 2019
Posts: 35
K
'Bolter
Thanks for your feedback. It's the Rocking side to side motion that has me worried. Clips hold it well enough, just concerned if the engine starts nocking, it could be moving the Distributor cap amplifying the effect of the knock.
I've asked my Garage to make sure it's the right cap.


1954 Chevy 3100
Re: Distributor cap with slight movement
Kevin13Shaw #1349455 Tue Mar 10 2020 01:59 PM
Joined: Feb 2004
Posts: 23,004
H
'Bolter
If an engine is knocking hard enough to make the distributor cap move, don't lean over the fender without a ballistic vest on- - - - -it's about to start throwing pieces in all directions. That being said, any rocking motion between the cap and the housing is too much. Either find a better[fitting cap, ort make that one fit correctly.

What's a stovebolter doing going to a "restoration shop" for a tune-up in the first place?????????
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Distributor cap with slight movement
Kevin13Shaw #1349489 Tue Mar 10 2020 07:48 PM
Joined: May 2005
Posts: 8,331
B
Sir Searchalot
What's a Stovebolter doing talking mm ?????????????? Seriously Kevin.....your truck is in the 47-54 era. The caps from 47 to 52(53) ARE DIFFERENT than the 54 cap. The clip slot is a different shape and at a different level as far as I can tell. The Standard Part number is different. Other vendor part numbers differ at the 1954 level. So, very easy for them to get the wrong cap. ASK THEM FOR THE PART NUMBER ASAP AND WE WILL ADVISE. Part number may be on your receipt.
The rotor is very different also.


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Re: Distributor cap with slight movement
Kevin13Shaw #1349492 Tue Mar 10 2020 09:07 PM
Joined: Aug 2019
Posts: 35
K
'Bolter
That was the first thing i checked. On the invoice, it just stated "Standard Distibutor Cap", I'll dig deeper.
In regards to the "Stovebolter going to a restoration shop", it was there for a problem with the transmission, and thought it would be a good idea to get a tune up done, so I would have a good base to maintain the truck going forward. I had just purchased the truck in June of 2019.
It is my pledge to do 99% of all maintenance on the truck going forward. :-)


1954 Chevy 3100

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