Build log - my first B2K

[lhamilton1807]

I’m part of the group there already and will see if anyone has a gasket if that’s where the leak is. I just prefer to spend as little time on FB as possible.
I also read that there was someone who used old gift cards and small 1x3mm o-rings to make his own rebuildable gaskets. It’s worth asking about, I suppose.

If my lpr is overpressurizing the solenoid, where would the air vent from?

[martix_agent]

I’m part of the group there already and will see if anyone has a gasket if that’s where the leak is. I just prefer to spend as little time on FB as possible.
I also read that there was someone who used old gift cards and small 1x3mm o-rings to make his own rebuildable gaskets. It’s worth asking about, I suppose.

If my lpr is overpressurizing the solenoid, where would the air vent from?

It's going to seem like a solienoid/manifold leak if that's what is happening. I don't think it's very likely this is the case, however. Does the leak get worse as you increase the LPR? If so, I tend to believe the LPR is working correctly. The only true way to know is to get your hand on an LPR tester for it, but I wouldn't worry about that right now.

The credit card and oring idea seems likely to work, if not frustrating to do correctly.

[Myrkul]

Since you fixed the manifold "o" rings, the next thing I'd check would actually be the ram. If the ram has a leak sometimes it sounds like it's coming from the solenoid. I guess in theory it could be the noid gasket, but I've personally never encountered one that was actually bad.

[lhamilton1807]

I’ll admit, this is the first time I’ve tongued a marker.

Moving on… here’s where the leak is. Pointing to the hole with the end of my hex wrench. Seems like the manifold is fine - nothing leaking from between the manifold and body.

[Myrkul]

That's where it blows off if your LPR is too high (most likely), or if you have the wrong durometer rings on the manifold (ruled out) or if your ram has a leak, or if your noid has a bad internal seal (least likely).

What does the seat look like in your LPR? How about the cup? Did you remember your cup spring?

[lhamilton1807]

I’ll take apart the ram and check for failed o-rings. Here’s the cup seal, cup, and spring.

I put a new spring in the plunger from the minor rebuild kit when I serviced it a few weeks ago. The leak starts just a few turns in from where the adjuster is flush with the outer rim of the lpr - I assume this is around when it begins supplying air to the manifold/noid so I doubt it’s over pressurizing the solenoid unless I’ve put something together wrong.

Edit: yeah apparently I’m an idiot and was so excited at how shiny the ram was that I completely missed putting an o-ring on it 🤣

[Myrkul]

Yep! That'll do it! Glad you got it sorted out!

The solenoids on these are rock solid, I think a lot of people assume they are bad because so many different parts can all cause a leak from the same spot, but it's almost never the solenoid.

Glad you got it sorted!!!

[lhamilton1807]

And it’s cycling! Can’t wait for the last piece. Modded bolt should be back in my hands soon…

[BrickHaus]

Looking forward to another b2k gracing the fields in 2025.

[martix_agent]

I was right about the LPR sending too much pressure? Feels good to still have it, I guess.
Congrats on the working marker!

[lhamilton1807]

No, there was no o-ring on the ram shaft so the first hint of pressure to the ram caused a leak. I had to burn out the loctite again to find this.