Radiator tag

[D S.]

I read from time to time that C-3 Harrison radiators had tags on them. What do these look like and where were they hung or attached? Does anyone make decent reproductions in lieu of finding originals? Were these tags on both small block and big block radiators?

Thanks,
Scott

[Robert C.]

Re: Radiator tag

The tag should be on the right, passenger side tank down about 8" from the top on the back (engine side). They are black painted embossed with numbers. The word "Harrison" is embossed on the right side outside edge of the radiator. I think all big and small blocks copper tanks have this.

[D S.]

Re: Radiator tag

I guess I need photos to see what they look like and where.

Thanks!

[Chuck G.]

Re: Radiator tag

There are 2 "broadcast" letters on them too. I think mine is MW. Has to do with the configuration/usage of the copper/brass radiator.

The tag clips on.

Chuck

[Jack H.]

Re: Radiator tag

Plus, being located where they were (that far down the RH side of the radiator), they were generally covered by the radiator's core support and therefore NOT visible once the radiator was installed in the car. That's why many of the JG books simply discuss them and some even instruct judge NOT to attempt to see/read the tags.

So, with that in mind, you'll probably understand why there isn't a 'mass rush' to reproduce these parts for sale + why others aren't generally concerned about the presense/absense of the tags. Heck, if the radiator had ever been removed, it had a good chance of 'losing' its original tag in the R&R process....

[Roberto L.]

Re: Radiator tag

Plus, being located where they were (that far down the RH side of the radiator), they were generally covered by the radiator's core support and therefore NOT visible once the radiator was installed in the car. That's why many of the JG books simply discuss them and some even instruct judge NOT to attempt to see/read the tags.

Hello Master, is that true for Al radiators or just CU/BR variety?

It is difficult to imagine the tag in the side of the Al Harrison. I thought the only piece was the top label, the chrome like label with a note.

I still have that label in my out of service 3155316.

Saludos

[Jack H.]

Re: Radiator tag

The Harrison Aluminum radiators (small and large capacity) had their date of manufacture embossed in the top cover on the LH side and their ID code rubber stamped.

[Tom R.]

Re: Radiator tag

I read from time to time that C-3 Harrison radiators had tags on them. What do these look like and where were they hung or attached? Does anyone make decent reproductions in lieu of finding originals? Were these tags on both small block and big block radiators?

Scott

Can't speak to the 70-72 years but in later years the embossed broadcast code shows up as white letters on a black tag with a date code. By 74, the broadcast code could be reconciled with the build sheet.

So we would see an MK7 where 7 is the year manufactured.

[Brad M.]

Re: Radiator tag

Here are some pics of mine on my 71 lt-1. I do not think mine says anything other than the MK9 code.

[Tom R.]

Re: Radiator tag

Here are some pics of mine on my 71 lt-1. I do not think mine says anything other than the MK9 code.

Nice pic Brad...And how do you interpret the MK9 code?

[D S.]

Re: Radiator tag

Thanks for the great photos, Brad, and to all others who contributed. I'm going to assume that the tag isn't an item that would be judged because of its difficult location.

[Terry M.]

Re: Radiator tag

Depends on the judge, the location of the tag, and the number of cars one has to judge. Don't assume -- you know that expression.

[Brad M.]

Re: Radiator tag

I really do not know what the code means or know which codes were used on which vehicles, maybe someone else does. I think these would have provided production workers some guidance on which version was appropriate for cars with various options. (similar to things like the white stickers on shocks and the ink stamp on alternators, etc.)

[Tom R.]

Re: Radiator tag

The tag broadcast code MK is consistent with what we see in 78 and early 79 radiaors and the 9 consistent with an early 79 produced radiator. I don't believe early 70 radiators called out an MK code

[Brad M.]

Re: Radiator tag

Thanks Tom, I am not original owner, so it is certainly possible that the radiator is not original to my car. That is good info to know.