Re: RC 26 Radiator Cap
Oop,s, you're right. I wasn't paying attention. Again.
Oop,s, you're right. I wasn't paying attention. Again.
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Re: RC 26 Radiator Cap
Message back to Ralph: Not sure how much money your RC-26 cap is worth, but obviously, it's worth a lot of good discussion and learning here. More's going to be known as a result of your question. Thanks so much for posting! Keep 'em coming!!Don Lowe
NCRS #44382
Carolinas ChapterComment
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Re: RC 26 Radiator Cap
How do you clean a rusty cap, can you soak it in something?Comment
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Re: RC 26 Radiator Cap
Ralph
I have had great success with OOOO steel wool. Can get it at Home Depot. They vary in grades, O, OO, OOO, OOOO. I actually use it on my restored radiator caps after they acquire some white oxidation. It does not harm the finish on the cap and cleans it extremely well....Good luck...Regards. ARAComment
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Re: RC 26 Radiator Cap
I have a 15# RC-26 cap that looks exactly like the one Don Lowe has posted, except mine has two thin closely spaced lines around the left side AC logo. There is also a very slight double stamp at the bottom of the C & the 2 in the RC-26. What may be of more interest is the back side of the cap. On top of (with cap upside down) the aluminum disc that goes under the spring is a 3/8" wide circular floating seal or gasket. The seal is black rubber or some composite material that has small white/grey flecks in the material. I have probably a hundred or so old radiator shop discarded caps, but have never seen a cap with this gasket. It does not appear to be something homemade or added after production. Maybe I missed the thread where this was discussed. If not, was this part of a production RC-26 cap? Has anyone else seen these gaskets on their RC-26 caps?Your Message
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Re: RC 26 Radiator Cap
Glen - The AC RC-26 radiator pressure caps came with a composite material gasket as you describe. In fact from what I have seen all of the AC radiator pressure caps like the 307 and RC-26 caps that were used on Corvettes with the aluminum overflow tanks had that gasket. PeteComment
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Re: RC 26 Radiator Cap
Peter, I probably should have known that, but did not. Thanks.Comment
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Re: RC 26 Radiator Cap
I hate to dredge this back up again but I'm trying to figure out which cap I should be looking for. I have an early production (#3407) '69 L-36 4spd w/o A/C. My guess is that I need one of the caps posted by Alan or Don - the only difference being the orientation of the "15 #, RC-26" Script. Though the rivet on Don's appears to have a larger/flatter rim encircling the outside of the rivet.
For what it's worth, I have posted a picture of the typical repop being sold for $30 by the usual suspects. Notice the placement, size and spacing of the "15 #, RC-26" and open arrow heads. I also see several other subtle differences but I won't belabor the point.
RC26_Repop.jpg'69 Blue/Blue L36 Vert w/ 4-Spd
'73 Blue/Blue L48 Coupe w/ 4-Spd
'96 Red/Black LT-4 Convertible
"Drive it like you stole it"Comment
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Re: RC 26 Radiator Cap
Aluminum expansion tank.'69 Blue/Blue L36 Vert w/ 4-Spd
'73 Blue/Blue L48 Coupe w/ 4-Spd
'96 Red/Black LT-4 Convertible
"Drive it like you stole it"Comment
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Re: RC 26 Radiator Cap
Floyd
The normally expected radiator cap for a 1969 L-36 non A/C with aluminum expansion tank is a RC-26. Here is a photo of said cap this one has been restored. Also the rivet is not flat across it has a raised rounded ring above the surface of the cap body and in the center it has a valley maybe about an 1/8" to about 1/4" in depth. Also no auction on this item sorry
Radiator_Cap 001 RC-26.jpgComment
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