Mobile Rarus 827 or Nuvair 455
You can buy the Mobile Tarus 827 re-packaged by Air Venturi on eBay.
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Three time Rebuild Yong Heng
- Thread starter RM.510bigbore
- Start date
You can buy the Mobile Tarus 827 re-packaged by Air Venturi on eBay.
When do you change out you’re secolube 500/comparable oil ?
(After initial startup)
I’m just trying to see if it can stay in there for a while.
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I was not able to find any of the Mobil Rarus 827 being sold by Air Venturi on Ebay. There are some other sellers asking $19 for 12 ounces.
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Thanks. I found some Air Venturi compressor oil for $7 / pint. If that is Mobil Rarus 827 the price is a lot better than on ebay.
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I use the Nuvair myself and I don't do a "break in", there is no sump so all particulates drop to the bottom. I just change it at 100 hours and filter it through a .5u filter and reuse it.
There is no combustion and by weight, it's not absorbing water so once the particulates filter out, it should be recyclable.
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I have 3 YH. One has been going strong for 6 years with 2 or 3 piston swaps. 69 hours before kt started losing pressure.
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Great info. I just installed new 2nd stage rings because mine was maxing out at 4000psi. With the new rings it's still maxing out at 4000psi. I'm not hearing any leaks when I stop it a 4000psi and it is holding pressure. Any suggestions of what to check? Thanks!
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Benaiah, is your 4000psi max reading off of the YH's gauge? YH gauges can be rather inaccurate and somewhat prone to breaking.
On my second gauge and it is 5-600 psi off (hard to tell because the needle jumps around so much). Going to replace it with a stainless steel plug if/when the second gauge goes south.
On my second gauge and it is 5-600 psi off (hard to tell because the needle jumps around so much). Going to replace it with a stainless steel plug if/when the second gauge goes south.
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My YH cuts off about 4000+ psi still far away from 300 bars.
I give my 14L tank a good hour to cool down, when I am back and ready to start again the pressure shows about 3800, starting from here I give it a run until cuts off again, and again cool the tank....
So finally after let say 3 finish runs I am getting very close to 300 bars.
You need to cool down the air tank as well, not only the motor or water ....
I give my 14L tank a good hour to cool down, when I am back and ready to start again the pressure shows about 3800, starting from here I give it a run until cuts off again, and again cool the tank....
So finally after let say 3 finish runs I am getting very close to 300 bars.
You need to cool down the air tank as well, not only the motor or water ....
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I figured out my problem. I disassembled the head and discovered the Royal Purple was dieseling in the head. The reed valves were covered with carbon and soot which prevented them from sealing fully. I cleaned off all the carbon and now it goes up to 300 bar.
I ordered some better compressor oil and won’t be using Royal Purple anymore.
I ordered some better compressor oil and won’t be using Royal Purple anymore.
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The the top of the second stage piston unscrews where the second piston ring is. Once unscrewed you can install the lowest ring. The middle ring gets installed when you screw on the top of the head. I install the top ring last. I used an xacto knife to cut off the old rings.
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I had a problem unscrewing that second stage piston two times already replaced the entire rod, but nomore rods for next time. I still have a small bag of those rings. Asking for my next time to know....
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The top part of my second stage piston was loose and unscrewed by hand. Not sure what the best tool would be to loosen it. I put some red loctite on it when installing it and used some leather and vice grips to tighten it.
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