C1 Reproduction Temperature Senders

[Joe L.]

Re: C1 Reproduction Temperature Senders

Rich------


The GM #1513321 was an original temp sender. In addition to its PRODUCTION use, it was once SERVICE for all 56-78 Corvettes. However, the 1513321 was not used for all of 1956-78 PRODUCTION. The 1513321 is a BUTTON terminal sender. 1968-71 Corvettes used a PIN terminal sender. I believe that some early C1 did too. In any event, I believe the 1513321 is calibrated the same as the pin terminal sender.

I don't know why the 1513321 you have did not test out properly. Was the bag SEALED when you got it?

[Dan B.]

Re: C1 Reproduction Temperature Senders

Rich is there any varyation in the profile height of the switches you are looking at? Reason I ask is the original thermostat housing is shorter than the later service replacement part I determined and I had interference between the connector and the hose when I swapped an original housing in to replace the GM service part. I asked this question here and Joe did his best to answer but it really becomes obvious when you have both side by side : https://www.forums.ncrs.org/showthre...mostat+housing. The original housing is 1/4 inch shorter height wise which created a clearance problem with the installed premium TS switch. I have a so called calibrated AC stamped part I got form one of the vendors which is still 20* off and I had to install an in line resistor to get it to read correctly at operating temp. Dan

[Richard M.]

Re: C1 Reproduction Temperature Senders

Rich------


The GM #1513321 was an original temp sender. In addition to its PRODUCTION use, it was once SERVICE for all 56-78 Corvettes. However, the 1513321 was not used for all of 1956-78 PRODUCTION. The 1513321 is a BUTTON terminal sender. 1968-71 Corvettes used a PIN terminal sender. I believe that some early C1 did too. In any event, I believe the 1513321 is calibrated the same as the pin terminal sender.

I don't know why the 1513321 you have did not test out properly. Was the bag SEALED when you got it?

Joe, Yes some early Corvettes used the Pin type connector. These 58-62's, and the midyears, use the Button terminal.

I was very surprised it failed my water test also. Like I said, I am being tested by the diagnosis Lords and my patience is being tested as well. I have lost count as to how many times I have drained a gallon of coolant and refilled while changing senders.

Yes the bag was sealed, and I just opened it up yesterday to test it. I wanted to save the part in the bag but gritted my teeth when I opened it. I didn't really want to use it as it was being saved for my own '59 as a spare. I bought it about 10 years ago from John Meissinger. I did NOT install it, I just de-bagged it to test it in water with the anticipation it would be the right part. Wrong.

I am going to do some more testing of these senders immersed in water. I'm also going to build a resistor bridge and test the gauge to be certain I'm not chasing a ghost.

Rich is there any varyation in the profile height of the switches you are looking at? Reason I ask is the original thermostat housing is shorter than the later service replacement part I determined and I had interference between the connector and the hose when I swapped an original housing in to replace the GM service part. I asked this question here and Joe did his best to answer but it really becomes obvious when you have both side by side : https://www.forums.ncrs.org/showthre...mostat+housing. The original housing is 1/4 inch shorter height wise which created a clearance problem with the installed premium TS switch. I have a so called calibrated AC stamped part I got form one of the vendors which is still 20* off and I had to install an in line resistor to get it to read correctly at operating temp. Dan

Dan, In my first post you can see them all side by side. I'll take a closer look and take some physical measurements. The #3 is a old original GM part. It has 3 dots, then AC Made in U.S.A. It wasn't pictured because it was in the engine as the 2nd or 3rd attempt to find a good one. It was 20* high.

http://www.parts123.com/corvettecent...&partno=301290

Darryl, Thank you for taking the time to research and post the above. It appears that Brian's discussion is exactly my scenario.

[Richard M.]

Re: C1 Reproduction Temperature Senders

I went in and dissected the original 3 dot (actual 6 dots as there are 3 more after U.S.A.) GM dimpled-bottom sender. A usual bunch of iconized photos for now as I have to leave shortly. Believe it or not, I think I may have a chance at resurrecting it as when I hit it with the heat gun the resistance came down abruptly and was getting somewhat in range. It appears to be a carbon resistor with plated copper ends. It had obviously leaked in the past. I will reassemble using RTV sealer at the barrel joint and carefully silver solder the top ring which I cut with a Dremel.

I'll do some tests before I go through that though.......I know this is crazy but I just had to try this.

Results later. It will probably be fruitless, but you know me.

Also a few shots of the original GM before surgery and the NOS 1513321 to show height differences and configuration.

Rich

[Leif A.]

Re: C1 Reproduction Temperature Senders

Such a simplistic part. You wouldn't think it would be that difficult to reproduce correctly. Great detail, as always, Rich. Will be interesting to see your end result.

[Ken A.]

Re: C1 Reproduction Temperature Senders

Such a simplistic part. You wouldn't think it would be that difficult to reproduce correctly. Great detail, as always, Rich. Will be interesting to see your end result.

It's not, we sell 1000's.

[Jim D.]

Re: C1 Reproduction Temperature Senders

It's not, we sell 1000's.

Who is the "we" that sells 1000's?

[Leif A.]

Re: C1 Reproduction Temperature Senders

It's not, we sell 1000's.

Ken,
I, personally, like and buy your products...they have always been a quality piece. Who is selling your temp sending unit?

[John D.]

Re: C1 Reproduction Temperature Senders

Not all NOS AC 1513321 temp sending units are created equal. You may have said this already. The last ones made with the smaller font are no better than an auto store one. John D

[Richard M.]

Re: C1 Reproduction Temperature Senders

K & B Corvette Products in Georgia. Ken's not supposed to advertise here on the TDB so he's adhering to the rules. But I can mention it. See his ads in the Driveline.

So, Ken.... I was not ever aware you made these. You must be laughing hysterically at my thread.

I'll give you a call in the morning. I'll need one asap. I will not change another sender until I get yours.

Rich

[Joe L.]

Re: C1 Reproduction Temperature Senders

Not all NOS AC 1513321 temp sending units are created equal. You may have said this already. The last ones made with the smaller font are no better than an auto store one. John D

John-------


Yes!

[Joe R.]

Re: C1 Reproduction Temperature Senders

Ken,
I, personally, like and buy your products...they have always been a quality piece. Who is selling your temp sending unit?

Leif,

The unit that Ken distributes is what I recommend with all gauges, both original and reproduction. Have sold many and not one complaint from customers yet! There is always just one!
The unit is dead on accurate and has the correct markings to pass NCRS judging.

JR

[Bob W.]

Re: C1 Reproduction Temperature Senders

Rich Keep us posted on how it works out.

Bob

[Joe R.]

Re: C1 Reproduction Temperature Senders

K & B Special Products in Georgia. Ken's not supposed to advertise here on the TDB so he's adhering to the rules. But I can. See his ads in the Driveline.

So, Ken.... I was not ever aware you made these. You must be laughing hysterically at my thread.

I'll give you a call in the morning. I'll need one asap. I will not change another sender until I get yours.

Rich

Rich,

You are so correct that some are on the technical board in an attempt to help other members but instead are just advertising their services. Shame on them! You know any of those people personally? Could one of those live in Florida?

JR

[Richard M.]

Re: C1 Reproduction Temperature Senders

Rich,

You are so correct that some are on the technical board in an attempt to help other members but instead are just advertising their services. Shame on them! You know any of those people personally? Could one of those live in Florida?

JR

JR, I'm a bit confused. There are many in Florida. Is there one in particular? You didn't add any kind of a smiley icon or other indicator that you were kidding around, so I'm not sure if you're kidding around or insinuating some undermining issue.

I guess there are many people, like you, and like me, that get on here to help people, have fun and share knowledge. We do it because we want to, not because we have to. You have a nice business and many folks here recommend you for your your excellent work, instrumentation restoration expertise and products. I myself have learned much from you over many years and appreciate what you've done to help me.

I have written a fair amount of DIY documents to help people do things themselves. I only have one issue with doing that for people. That is it may disturb people that are in the business to provide that service. I justify in my mind that there are people that will always go to a service business as they do not have the abilities or aptitude to do that task. There are some that have the desire and skills, but need a little more info to help them. This is why I like to do it.

I recommend yourself to others in emails and phone conversations as well. Many on this Board have also recommended you for your services. Our policy says we can do that, like I did for Ken's business, as I will always be a customer as he has good products and stands by his products with likely the best warranty in the industry. I also recommend some major suppliers due to their great customer service, especially these days with all of the reproduction parts issues we've all been dealing with.

I am a hobbyist and a passionate Corvette owner and restorer. I spent 30 years in the Electronics Industry and for longer than that have been playing with Corvettes. That was my therapy. Only 12 years ago after moving here to Florida after retirement did I get into restoring my own cars. Then my friends asked for help with their cars. Since I love to do this it's hard for me to say no.

Unfortunately, my physical abilities have digressed to a point that I cannot do major restorations any longer, even on my own cars. Time for my "Graying Period" I guess. There are many of us with this aging thing, both physical and mental. It stinks, but that's life. This '61 is my last restoration. My arthritis and cervical stenosis, pinched nerves in my neck and back issues has me in pain most of the time. Thank God my move to Florida had delayed my Northern painful life. Also very recently I've had some serious eye issues which really scared me. One eye stopped working one day back in December and I've been diagnosed with something that will keep me on optic medication forever. My body is simply telling me I won't be able to do this anymore. It's almost here. If my eyes go really bad, then no more pictures to post or things to write. I'd really hate not to be able to do that.

Rich