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Discussion Starter #1
BREATHER ELEMENT on a '75 HONDA CB500T
The description: A spongue beneath the battery and between the carbs, under the seat - It sits in a window pane piece of plastic.

Honda doesn't make it -
Nobody has one in NYC (that I spoke to anyway)-

1. ANYONE HAVE ONE OR KNOW WHERE I CAN GET THIS PART?
2. and, IF IT HAS A LARGE HOLE IN IT, IS IT NECESSARY TO REPLACE IMMEDIATELY?

Would love to buy immediately. Thanks guys.
 

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Discussion Starter #2
Is there a a simple solution to replacing that sponge with something else?

Basically, all bikes this age having this exact set up have deteriorated Breather sponges...

Any info would be super -
 

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I don't even know what the hell a breather sponge is...

If its a filter on the end of the crankcase breathers, K&N sells a little filter that fits on the end of breather hoses. Or you could route the breathers back into the airbox.
 

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Yeah... I have a CB450T and did have a 500T, and I still have no idea what that is. Don't sweat it.

Its one of two things:
1) catch can for breather blowby (oil)
2) simple filter for the breather hoses.

I'm guessing #1.
 

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Discussion Starter #7
Yeah, I basically shoved a house sponge in there this morning - the hell with it, after further review I saw no real purpose other than catching acid from hitting the frame. Either way, with the new sponge, it won't.
 

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Discussion Starter #9
Yes, the battery breather tube is routed to the ground, but if you look at the link I posted, the battery basket is all part of this window pane the sponge sits in, and inevitably, this sponge (the original one I removed from the bike) had battery acid spill on it.
Safe to assume it will continue to act as a catch.
 
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