57 breather cap

[Chris S.]

can someone give me an opinion of this cap, it appears old but i am concerned with the spring rivet.

[Mike M.]

Re: 57 breather cap

i'm used to seeing a pseudo pop rivet( as if the gun was on the opposite side of the spring) but which doesn't have a nail head. there is no central hole in the rivet you show. mike

[Doug F.]

Re: 57 breather cap

here is a pic of a 57 cap i've had for decades, i think this is the rivet mike speaks of

[Chris S.]

Re: 57 breather cap

i can see what you mean and thats what i thought. are the repo's from any suppliers showing them correctly?

[Mike M.]

Re: 57 breather cap

i can see what you mean and thats what i thought. are the repo's from any suppliers showing them correctly?

not that i'm aware of. recently got one from CC and its like the one you pictured.i suppose a fella could get creative with a drill motor and couple different sized drill bits and make the repo look like the real mccoy. mike

[Doug F.]

Re: 57 breather cap

the last repo cap i got was pop riveted, if you squint just right it looks ok, but it still isn't exactly right, i'm with mike, i'd rather have the solid rivet and work it a bit

[Tom P.]

Re: 57 breather cap

And do judges pull the caps off and look at the rivet??????????????

[John D.]

Re: 57 breather cap

Tom, YES.
None of the repros are correct although some are configured better than others. By that I mean the oil oil area is much better on some than others.
No I don't have any original oil caps. Half of NCRS has called me for them.

Now I don't have the latest 56-57 manual but the older JM shows nice pic or sketch of original oil caps.

[Tom P.]

Re: 57 breather cap

Tom, YES.

Well with that in mind, can you tell me when/which caps had OIL-OIL and which caps had OIL-AC?

[Jack H.]

Re: 57 breather cap

Well with that in mind, can you tell me when/which caps had OIL-OIL and which caps had OIL-AC?

This is covered in the various Judging Guide books. Actually there are three versions of oil cap emboss to understand:

(1) 56-59E, Oil-Oil with 'slit' shaped reinforcements
(2) 59L-61E, Oil-Oil with 'D' shaped reinforcements
(3) 61L-62, Oil-AC with 'D' shaped reinforcements

[Joseph T.]

Re: 57 breather cap

Well with that in mind, can you tell me when/which caps had OIL-OIL and which caps had OIL-AC?

This is covered in the various Judging Guide books. Actually there are three versions of oil cap emboss to understand:

(1) 56-59E, Oil-Oil with 'slit' shaped reinforcements
(2) 59L-61E, Oil-Oil with 'D' shaped reinforcements
(3) 61L-62, Oil-AC with 'D' shaped reinforcements

Aren't there two types of 1957 oil caps..open and closed.

Joe

[Clem Z.]

Re: 57 breather cap

Aren't there two types of 1957 oil caps..open and closed.

Joe

yes GM changed them on SHP engine because the vented cap allowed oil mist to come out on the engine

[Richard T.]

Re: 57 breather cap

It's a repo

[Chris S.]

Re: 57 breather cap

yes vented and not vented

[John D.]

Re: 57 breather cap

I guess I have to study the judging manuals as I didn't realize the 56-to 58 style cap was also used on early 59.