is there supposed to be somekind of a gasket between these besides the weak sauce rubber o-ring? I have a vacuum leak, just wondering if i'm missing a gasket.

 

There is supposed to be an o-ring there. I haven't found anyone that offers a replacment one yet.

 

yeah i have that, it's still leaking past that. Maybe RTV? Or cut out a paper gasket?

 

anybody else have this problem?

 

I usually put a small amount of the RTV. You might be able to find orings that size. Most people think it's a special oring because of it's shape, but it's just a regular oring molded after fitment.

 

the o-ring doesn't have any cracks or anything, maybe it's just flat? either way i through some rtv on it, i'll test it tomorrow with the compressor, see if it holds.

 

It is just the oring. Yes I have had issues with them leaking. I switched to RTV and solved it.

 

The obvious solution is ignored as usual. Go to Mazda and buy a new o-ring. They're only a few dollars and they work fine. No goo is needed.

 

well i assumed that mazda didn't sell one, after what bigdv519 said. no matter, they're weren't open yesterday either way.

 

I bought one from Mazda no problems.

 

Unless it involves servicing, Mazda is still useful.

 

Solution is never ignored. Been there done that doesn’t always work. Especially on TB's ported to far lol.

 

I used a little rtv.

 

i'm using rtv till my o-ring comes in

 

There's only an o-ring. You can get a new one from Mazda, or bring the old one to a hydraulic (or most fastener stores) store and get one that way. I generally coat them with Hylomar as well.

Regarding the "weak sauce rubber o-ring": O-rings are far superior to gaskets in almost every circumstance. The reason is that because an o-ring sits in a groove, the higher the pressure on the ring, the more it is forced against the surfaces it is sealing and the better it seals. Gaskets on the other hand just blow out...It's probably a safe bet to assume that manufacturers use gaskets because they are cheaper then machining an o-ring groove.

 

I haven't found anyone BESIDES the stealership. ;-)

 

Unless you've hacked up your TB, a new o-ring is always going to work. If you're going to say "I have had issues with them leaking" then you should at least mention that it was entirely your own fault.

 

never my fault I dont hack. Customers. I have had ones that new orings just didnt seal to well under boost.