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09-07-2012, 08:07 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Distributor cap question
OK, this is a bit of a silly question and will probably get some eye rolls, but I'm still curious so will ask anyway.
I just did a tune up on my FE and in replacing the distributor cap, had a choice of two that are generally original looking in appearance:
1) No name brand that seems to be of decent quality and has brass contacts ($15).
https://www.mustangsunlimited.com/it...p?T1=512106+01
2) Motorcraft brand name distributor cap, but has aluminum contacts. ($22)
Motorcraft DH6 - Motorcraft Distributor Caps - Overview - SummitRacing.com
Which is better?
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-08-2012, 06:20 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,947
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Not Ranked
Quote:
Originally Posted by dcdoug
Which is better?
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Trick question....  Aluminum will conduct better than brass, but, it has a nasty habit of developing a white, powdery oxide on the outside which hampers conductivity and erodes the metal, but, dielectric grease will greatly diminish this, but, that won't help if your rotor tip is copper. And since you asked, ever wonder why underground conductors fail catastrophically? Because the conductor is aluminum, some with a steel core for strength, and a protective insulator around it all. When they are placed in the ground they're surrounded by a nice safe, soft protective bed of "rock dust." But then, the evil water and sewer guys come on to the site and backhoe up the ground, lay their pipes, and then back fill crap on to the conductors (instead of carefully replacing the rock dust). The insulation gets nicked, just a bit, and then over time the moisture turns the aluminum conductor in to white, powdery aluminum oxide and then *poof* the conductor fails -- but this takes time, and now the water/sewer guys are long gone. And then everyone stands around looking at the faulty conductor, which faulted directly under the water/sewer line, and say "ahhh, the water/sewer guys strike again." |
09-09-2012, 03:30 AM
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CC Member
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Join Date: Jun 2012
Location: Naracoorte,
SA
Cobra Make, Engine: CR Cobra 3169
Posts: 818
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Not Ranked
I would go for the known tested brand. motorcraft. Thousands of volts will conduct through copper as well as ali.
JD
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09-09-2012, 04:47 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,282
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Not Ranked
Niether, go with a blue streak (standard ignition) brass contact cap/rotor. I've got one on my MSD pro billet and it's 6 years old and never misses a beat!
__________________
Too many toys?? never!
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09-09-2012, 06:57 AM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
Quote:
Originally Posted by undy
Niether, go with a blue streak (standard ignition) brass contact cap/rotor. I've got one on my MSD pro billet and it's 6 years old and never misses a beat!
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ok, stop the presses!!!!!!
Undy, what contacts does it have? male or female for the wires?
i know the MSD cap is a GM type cap but.......
__________________
Fred B
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09-09-2012, 07:43 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,947
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Not Ranked
Quote:
Originally Posted by FWB
ok, stop the presses!!!!!!
Undy, what contacts does it have? male or female for the wires?
i know the MSD cap is a GM type cap but.......
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OK, if you're going in that direction... then go the distance.  Click here: A Better Looking MSD Distributor Cap |
09-09-2012, 04:20 PM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
No no.....i just want some one elses cap thats non-msd....thats why i'm in the thread.
paint or fingernail polish on the MSD cap doesn't help the center electrode at all.
thanks though, i did see that post when you posted it a few months ago.
__________________
Fred B
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09-10-2012, 03:28 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,282
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Not Ranked
Quote:
Originally Posted by FWB
ok, stop the presses!!!!!!
Undy, what contacts does it have? male or female for the wires?
i know the MSD cap is a GM type cap but.......
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Gotta confess... It's running a Chebby style cap (female contacts). With custom wires it's really no biggie (to me). The cap choices are more plentiful that way. Plus, the caps last forever too!
__________________
Too many toys?? never!
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09-10-2012, 07:48 AM
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CC Member
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Join Date: Jan 2008
Location: Williamsport,
PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
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Not Ranked
yes key phrase is "caps last forever"....i need to do wires and a custom wire will be needed
__________________
Fred B
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09-10-2012, 08:45 AM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
A tan colored cap was original on the 427 s/o . You can replicate that with an accel cap. Very close to looking like an Autolite cap.
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09-10-2012, 11:44 AM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
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09-10-2012, 04:28 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Quote:
Originally Posted by Sal Gerace
A tan colored cap was original on the 427 s/o . You can replicate that with an accel cap. Very close to looking like an Autolite cap.
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Really? Ugh, black looks so much better. 
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
www.partskeeper.com
(Less time searching, more time wrenching & driving)
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09-10-2012, 05:40 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,947
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Not Ranked
Quote:
Originally Posted by Sal Gerace
A tan colored cap was original on the 427 s/o .
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Quote:
Originally Posted by dcdoug
Really? Ugh, black looks so much better. |
Perhaps a compromise with a "black and tan" cap? You could say you came up with the idea while relaxing in your favorite Irish pub.... |
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