What's this bbk piece

[ben]

Gettin ready to install muy first bbk On a139qmb. Wondering what the two brown cylinders with an o ring on one side and a spring on the other are for? Can't find any references in install guides, including 90gt vert's here... Any clue? I'll try to figure out how to add a picture here...

[tortoise2]

Valve stem oil seals?

[ben]

Thanks! But that's not it, it's much smaller. The spring is wrapped around the end just like a metal o ring, and that end is beveled and small enough to fit inside the wrist pin interior... I'm sure it doesn't belong there, but for reference on size. Whole piece is maybe .5 in diameter and .5 in long.

[ben]

This is the kit I bought, the pieces are pretty much dead center, right above the circlips in the first item picture.

www.amazon.com/gp/aw/d/B01EBP569O/ref=yo_ii_img?ie=UTF8&psc=1

[ben]

And I guess while I'm asking questions, what's the brass ring pictured in the middle of the gaskets for as well?

[greggkinney]

those are the valve seals and an exhaust gasket

[greggkinney]

the discription list them as valve oil seal and on down it says exhaust gasket. if your valve srals are good i wouldnt bother changing them. theyare included to make it more of an overhaul kit.

[dan50]

Ditto on what greggkinney said. When I started installing my 47mm BBK, I had to find out what the valve seals were.

Click on 'Manuals' on the left of the screen, and download the 139QMB engine manual. It has exploded diagrams of where everything goes as well as torque specs. Very handy Reference Manual. You need Adobe Reader to read it offline, but Adobe Reader is free from www.adobe.com .

[jeff84]

little rubber boots. that's my official answer

[90GTVert]

They're shown here being removed and installed.