Radio Suppression Condensor

Jack65K_old · November 29, 2010 at 12:48 PM

I am in need of a radio suppression condensor that mounts externally on my alternator (the wire broke where it connects to the condensor), does anyone know where to buy one?

Jack

xirtam67 · November 29, 2010 at 2:02 PM

John's Mustang:

http://johnsmustang.com/Catalog/2311/

Part ID Part Description Price

51634 NOISE SUPRESSOR

65-73 Capacitor, Repro ea. $19.95

Manufacturer's Part Number: D5AZ-18832-AR

Jack65K_old · November 29, 2010 at 2:36 PM

Thanks,

The mounting looks different than the original but I may give it a try as I can't seem to find any others.

Jack

cobraboy · November 29, 2010 at 3:19 PM

Ask Jack at Dead Nuts On.

He was kind enough to send me one he had.

Jack65K_old · December 1, 2010 at 9:59 AM

Mark,

Thanks for the suggestion. I emailed Jack at Dead Nuts On an he does not have any at the present time but suggested I contact him later next week as he was expecting some cores and many times they are still attached to the cores.

Jack

rds289k · December 5, 2010 at 8:54 AM

When was the unit an external part? I may need one for my March 65 - yes?

bobmannel · December 5, 2010 at 7:01 PM

Ford said the external condensor was used until 7/9/65. If you alternator has been replaced, the replacement likely has the internal condensor.

zray · December 5, 2010 at 7:37 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Ford said the external condenser was used until 7/9/65. If you alternator has been replaced, the replacement likely has the internal condenser.

so after that date the condenser was mounted above the voltage regulator ? Was it the same condenser, only with a different connector?

Z.

jwc66k · December 5, 2010 at 9:51 PM

I'm working from some notes I made just after Moses parted the Red Sea so bear with me.

The 65 condenser that attaches to the alternator has a center mounting bracket/tab and is hard to find.

The 66 and on that attaches to the regulator has an end mounting bracket/tab. That's the physical difference, maybe. P/n and markings are all on the end: 65 type - C5TA-18832-A, 648 in an oval , not sure about other markings; 66 type - C3SA-18832-A, 648 in an oval, no other marking; C6OA-18832-A, 648 in an oval and "FOMOCO" in an oval, or "AUTOLITE" in several different fonts and type sizes preceeded by an Autolite logo (a circle with spikes at 9, 12 and 3 o'clock). The 648 is the supplier's model number. Simple, no?

Jim

I found another p/n for the 65 application, C5AZ-18827-A, 913 on the end and FOMOCO in an oval. This is for the center mount type.

The service replacements for 66 on are C6OZ-18832-A and D5AZ-18832-A as of 5-75. Those last two p/n's will be the box marking, there's no telling what will be marked on the part.

Edited by - jwc66k on 12/05/2010 23:57:46

club 33_old · December 6, 2010 at 8:28 AM

Here is a really quick picture of the one on the alternator for a '65.

[Blocked Image: http://lh6.ggpht.com/_FhFCoO_tIME/TPmBq99lNKI/AAAAAAAARls/5Aee_gM0nus/s640/IMG_3337.JPG]

I'll try and get a better picture later.

stevea_old · December 6, 2010 at 9:08 AM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Here is a really quick picture of the one on the alternator for a '65.

[Blocked Image: http://lh6.ggpht.com/_FhFCoO_tIME/TPmBq99lNKI/AAAAAAAARls/5Aee_gM0nus/s640/IMG_3337.JPG]

I'll try and get a better picture later.

If you could get a picture of the back of your alternator that would be great. Thanks Steve

bobmannel · December 6, 2010 at 12:55 PM

For radio interference suppression, there was a condensor on the alternator (due to brush arcing) AND one for the voltage regulator (due to points arcing). On my original alternator condensor was the end markings of C5TA-18827-A along the perimeter, 913 at the top and FoMoCo oval logo in the center. This number crosses to part number C5AZ-18827-A. Ford listed a C5AZ-18827-A kit for when 1966 radio kits were installed in 1965 vehicles. After 7-9-65, which was essentially the end of 1965 production, the capacitor (condensor) went inside the alternator, whether a radio was installed or not. Changes had to be made to the alternator casing to accommodate the capacitor. Ford indicated all alternators would receive this capacitor since it also acted as a "buffer" to protect the rectifier against voltage spikes which could cause permanent damage to the diodes.

Ford continued using a condensor at the voltage regulator for radio-equipped vehicles because the points were still an arcing problem. My ’65 original was marked on the end with C3SA-18832-A along the perimeter and 648 above that (no logo). There is no cross-reference for this condensor, so it was likely only available as part of radio kits, and it might be part of the C5AZ-18827-A kit. The following year, Ford used the condensor C6OZ-18832-A. It's engineering number and quite probably its stamped number was C6OA-18832-A.

dunc289_old · December 6, 2010 at 2:54 PM

My 66' has a really noisy am radio/8 track and if I were to get a noise suppressor that worked, where would I find one? Its not internal to the alternator, is it?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>. Anyone know someone who can restore this unit?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>

zray · December 6, 2010 at 7:25 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

My 66' has a really noisy am radio/8 track and if I were to get a noise suppressor that worked, where would I find one? Its not internal to the alternator, is it?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>. Anyone know someone who can restore this unit?<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>

I've bought 3 different used condensers over the years. None of them ever made any difference in the amount of rpm related static. I'd like to try a new (NOS) one to see if there is anything to be done about the click-click-click static that goes up & down with the rpm

Z.

bobmannel · December 7, 2010 at 12:43 AM

The clicking is probably coming from your ignition wires and not the alternator or regulator. Only way to get rid of it is to use radio interference suppression ignition wires, or add a special kit that put suppressors in line with the wires. Either way, you are adding resistance to the ignition wires.

zray · December 7, 2010 at 9:27 AM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

The clicking is probably coming from your ignition wires and not the alternator or regulator. Only way to get rid of it is to use radio interference suppression ignition wires, or add a special kit that put suppressors in line with the wires. Either way, you are adding resistance to the ignition wires.

thanks for the diagnosis. I didn't provide the full picture of my ignition system, Its an msd system which may be cause of the radio noise. I'm using msd 8.5mm wires, msd dist. & digital 6 msd box. I do know msd makes a noise filter that may be the cure. I haven't tried one yet as the radio noise is pretty far down on my list of items to be addressed.

http://www.summitracing.com/parts/MSD-8830/

"..........If you experience radio noise after installing your MSD unit, then you may need to install one of these MSD noise filters. With a noise filter in place, the MSD unit will draw current through the noise filter instead of from the battery, so the unit will not affect any of your 12 V accessories. These filters come complete with a cover and a mounting bracket........."

Z.

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