master cylinder caps

[nuclearlemon]

when and what application were the caps with the rattle style breathers used vs a flat plug with a breather hole? there, oddly, is a difference and the caps are not interchangeable either.

 

[Old Red]

I checked one of each of mine and they interchange fine. Maybe the cap you have pictured on top is just a generic plug, not a Toyota cap? Hex-head as opposed to square; missing the circular thing? Not an oem part?

 

[ClemsonCruiser]

Yes as Old Red said they should interchange. And Ibelieve the one with the breather was always on the brake master, I guess since it tends to have more expansion and contraction than the the clutch :shrug:

 

[nuclearlemon]

except i tried the plug with breather in multiple tin cups and it was too small.

 

[nuclearlemon]

i'll have to look at annie, but i believe the hexagonal caps were also oem, but maybe later. i had a nos master cylinder that i put on in the clutch. i'll check the cap to see if it's hexagonal or square. tried to find the parts available thread, but to no avail. i know i posted a pic of it on the bag there.

 

[67azcruizr]

there are caps and reservoirs without the breathers that are not compatible with the more common style

The first cap is used with the cast type 25 series and has a 32mm thread size.

The second and third are the common tin cup type 40 series and also has a 32mm thread size.

The fourth one is the odd ball tin cup type, presumably 40 series and has a 34mm thread size.

 

[Old Red]

Shazam!