It isn't leaking around the gasket at all, but I am getting oil "spit" out of the breather on a constant basis. It spits it out all over the place in little droplets. The oil level went down about 15% in the window within like 15 minutes of run time. I was checking for leaks, but don't see any except the spitting from the breather.I put a brand new head on it, with new piston and crank. Everything on the top side is new, with about an hour run time. I ran it with no load for two cycles of about 10 minutes to break things in. It is building pressure fine, but without the gasket in, it seems to make more noise as well as the spitting. It makes me nervous listening to it this way versus how it originally sounded. I am trying to order a new gasket, but I can only find the new front cover that includes the gasket. I emailed the guy I bought it from to see if I can just buy a new gasket. I tried like 20 times to get the gasket to fit in the grooves. My uncle came over and tried it. It basically shrunk and will not fit. There is at least a 1/16" gap from top to bottom if it is in the grooves on one or the other.For anyone that is interested in why, I rebuilt it because it was struggling to compress anything above 3000 psi any longer. I believe that I messed it up, trying to compress helium. I plumbed helium into the intake and tried to compress it. I had to turn the pressure up to about 20 psi on the helium regulator to get the compressor to work with helium. It did work and I compressed 2000 psi into an SCBA bottle. The problem is that it wastes a lot of helium doing it this way. I also believe that I put too much stress on it and although my temp. never got above 60 C, my cylinder showed signs of overheating towards the top. There was also a lot of evidence of things starting to come apart. Lots of grey matter was in the oil and case. I really think that this piston could benefit from a bushing. The pin was super sloppy and there was lots of movement going on where it shouldn't as well. I had 26 hours of run time on it when I took it apart.
Could grab a new cover. https://www.aliexpress.com/item/PCP-air-compressor-front-cover/32851043086.html?spm=2114.10010108.1000014.7.3d447c8cW2Ktj6&traffic_analysisId=recommend_3035_null_null_null&scm=1007.13338.98466.000000000000000&pvid=6873dc2d-c4c0-49fa-9d6f-def6ad2855af&tpp=1
What kind of oil are you using. If it isn't a non-detergent oil it may be foaming so much that it reaches the breather? Odd that just taking off the front cover could cause it...
Quote from: Tweeter on March 19, 2018, 12:24:13 PMCould grab a new cover. https://www.aliexpress.com/item/PCP-air-compressor-front-cover/32851043086.html?spm=2114.10010108.1000014.7.3d447c8cW2Ktj6&traffic_analysisId=recommend_3035_null_null_null&scm=1007.13338.98466.000000000000000&pvid=6873dc2d-c4c0-49fa-9d6f-def6ad2855af&tpp=1I just received one of these covers to replace mine that has a leaky gauge. Came with a new gasket and screws. I haven't installed it yet...
I have a Vevor(I believe) "yong Heng knockoff" & am looking for 2nd stage seals. Instead of rings, it has a delron cup that screws into piston rod. Any help, as the companies that sell these(out of Cali.) do not seem to know where to obtain.