What Ballast Resistor is this?

[Richard M.]

Yes I see it's 1.8 ohms..... I measured it. What is it's application, early C1, like 57? But they didn't use 1.8, they used 0.3. I just got a headache reading 11 archive threads and I'm still confused.

Thanks,
Rich

[Philip C.]

Re: What Ballast Resistor is this?

Hi Rich Its not for a C1 or C2 I can tell you that, no idea whats its for. Phil 8063

[Richard M.]

Re: What Ballast Resistor is this?

Thanks Phil,

In the archives I saw some pics Roy Braatz put up that looked quite similar. I'll have to find those posts again.......argh! I see another headache coming.

[Keith G.]

Re: What Ballast Resistor is this?

1967 gets my vote.

[Richard M.]

Re: What Ballast Resistor is this?

In this thread Roy shows a picture of a 1955 ballast. Mine is very close but not exact. The upper ceramic portions on his are more square at the tops, and inside corners more square and the keepers under the screws are different. Mine has the Delco Remy with Made in USA in the circle and the spot weld so I know it's a GM application. Too bad these little critters weren't dated!

https://www.forums.ncrs.org/showthread.php?p=501748&uid=2912#poststop

Mine Again...

[William L.]

Re: What Ballast Resistor is this?

What is the correct ohms reading for the different applications of C1-C2's?

[Erich C.]

Re: What Ballast Resistor is this?

Here's two sites that I found that discuss the ballast resistors. The second site gives a part # of 1957154 for the 1.8 ohm resistor. Maybe Joe L. can look that up and see if there is a listing.

http://forums.corvetteforum.com/c1-and-c2-corvettes/1496533-ohmage-for-ballast-resistors.html

http://www.stl-vettes.com/65Vette/misc_items.htm

Erich

[John S.]

Re: What Ballast Resistor is this?

[quote=Richard Mozzetta (13499);542308]Yes I see it's 1.8 ohms..... I measured it. What is it's application, early C1, like 57? But they didn't use 1.8, they used 0.3. I just got a headache reading 11 archive threads and I'm still confused.

Thanks,
Rich





this resistor has a band without a cutout and also has slots under the bolts that do not extend all the way to the end exactly like a 55 chevy or corvette. being 1.8 ohms it would not be a c1 corvette or a dual quad resistor. if it was a chevy resistor it would go on a low performance car 55 or maybe 56. the circular design in the ceramic appears to happen through extended use. i found a similar resistor beginning to get the same circular pattern. the part that will determine where this resistor came from is the raised circular boss on the underside of the band's bolt hole. i have not seen this on a passenger car and wonder if it might have tractor or boat applications. in the past i have ground down the boss and used the same resistor on a 55. it works perfectly and in corvette application, extends the life of the points.

[Richard M.]

Re: What Ballast Resistor is this?

Here are a few more photos of it's details. The rounded edges appear manufactured, not worn to me though.

It appears I do not have what I thought I had.

Thanks for all of the knowledge.

[John H.]

Re: What Ballast Resistor is this?

Yes I see it's 1.8 ohms..... I measured it. What is it's application, early C1, like 57? But they didn't use 1.8, they used 0.3. I just got a headache reading 11 archive threads and I'm still confused.

Thanks,
Rich

Rich -

I've never seen one configured like that one is (wide, rounded recesses and glossy ceramic surface).

[Richard M.]

Re: What Ballast Resistor is this?

John, Now that I've had all of the input, I think it now was likely for a boat or tractor application that Delco Remy made way back when. The glossiness is likely from someone giving it a clear coat to keep fresh and so it won't rust. Of course when it gets hot it would burn off, or bake on.

Rich

[Duke W.]

Re: What Ballast Resistor is this?

What is the correct ohms reading for the different applications of C1-C2's?

My understanding is that all 12 volt C1s used the 0.3 ohm ballast. All early '63 production engines used the 0.3 ohm, but the 1.8 ohm replaced it as a running change on 250 and 300 HP engines.

Mechanical lifter engines continued with the 0.3 ohm ballast through 1964, and all 1965-1967 engines with single point distributors used the 1.8 ohm ballast.

Since the 0.3 ohm ballast has a reputation for burning points, it might be a good idea to use the 1.8 ohm unit in its place.

Duke

[Richard M.]

Re: What Ballast Resistor is this?

Well ok......I looked up my old records from when I bought this in September of 2007. I paid $39.95 plus shipping from a well known Ebay seller in California. Here was my email from them after the sale......

Hello richmz,
Thank you for your purchase of our item, 1955-1962 Ballast Resistor correct for Judging! Vette!
We appreciate your business and strive to make sure all transactions are completed smoothly, professionally and efficiently. If you have any questions about how to complete your purchase of this item, or about any other items that we currently have available, please don't hesitate to ask!
Thank you,
(Name withheld to protect the Seller)

Since then I am now more educated about stuff like this and more skeptical when I see ads like this. Mostly due to learning right here.

So with that.......anybody wanna' '55-'62 John Deere "Corvette" Ballast Resistor correct for judging?

Thanks guys....Rich