Gearbox breather?

Post by **NafemanNathan** » Fri May 08, 2015 11:13 am

wurlycorner wrote:The breather is meant to be covered with a plastic vent cap, rather than a rubber cover

Who said anything about a cover? And I think you'll find the vent cap I have is rubber

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Fri May 08, 2015 12:57 pm

NafemanNathan wrote: Who said anything about a cover? And I think you'll find the vent cap I have is rubber

I've seen rubber covers on the breather but they don't allow it to vent - I assumed that was what you meant.

are you sure yours is both rubber and a vent cap (rather than a cover)? That's intriguing if so...

Post by **NafemanNathan** » Fri May 08, 2015 1:25 pm

No, what I meant when...

I wrote:There is supposed to be a rubber vent cap on the top of it as well

... was just push a small piece of swiss cheese in there

It was certainly rubber and given to me by Merlin who I assume already had an identical one on both his 5th and 4th gen.

I can't recall exactly how it was constructed, but inside was definitely more involved than a basic cap.

Out of interest, what would happen if the gearbox couldn't breathe? I imagine it's purely to do with expansion of gases due to heat?

Post by **Merlin** » Fri May 08, 2015 1:39 pm

NafemanNathan wrote:It was certainly rubber and given to me by Merlin who I assume already had an identical one on both his 5th and 4th gen.

Yup I lost my 4G one during my engine swap so bought a replacement, then found the original

NafemanNathan wrote: I imagine it's purely to do with expansion of gases due to heat?

I would think that would be it. The gearbox internals will get mighty hot.

Post by **ek9sid** » Fri May 08, 2015 5:46 pm

Merlin wrote:Yup I lost my 4G one during my engine swap so bought a replacement, then found the original

Where abouts did you purchase yours from? Honda?

Post by **Merlin** » Fri May 08, 2015 7:38 pm

Yup, it wasn't expensive.

Post by **ek9sid** » Fri May 08, 2015 8:18 pm

Awesome. Thanks for you helps and inputs guys. Going to pop into my local honda tomorrow and order one. Need to order some other bits too