Q to the Yong Heng mechanics

[bigHUN]

Long story short,

Time for a new compressor

Last year after some 30 or so hours I seized the crank arm, replaced the whole piston + cylinder. But noticed a small crack on the aluminum housing (just above that upper rib) probably because of the stress when seized. It was just a matter of time something to happen. Here me go now shopping...

www.airgunnation.com

I picked up a new "basic/basic" YH for parts to rebuild my broken "set pressure" model.
Basically I need the aluminum crank housing replaced, and need a mental support shall I go deep dive and full elbow greasing or do it with fingertips only.

When I am looking into these two compressors, what makes the "basic" 200 bar only and the "set pressure" 300 bars?
Can I assume the electromotor is the same, pistons+cylinder the same and the difference is actually in two aluminum blocks for purging the oil (left block) and purgin the moisture (right block)?
What if I transfer the two aluminum purging blocks and the complete cylinder head onto the basic model - would that make it to 300 bars? This sounds simpler then remove the new crack housing and move it to old 300 bar compressor.

 

[Camaro454]

I don't own a YH, but I do have a Tuxing. I can tell you categorically that IF the drive motors are the same HP (KW) then in order to achieve higher pressure you need to reduce compressor displacement. If there are no tags on the motor at all you would be guessing but look at windings if possible.

 

[bigHUN]

I've bought last year a spare YH kit (cylinder+piston) from YH=aliexpress and cannot recall seeing different kits for different 200 vs 300 bar pressure.

Edit:
I just checked the YH website and they say 1.8 KW motor also same RPM for all five models they selling, and the $ difference from basic to fully loaded is $100 CAD=$80 USD ...that makes me think only the external parts (valve blocks+tubing+gauge switch) makes the difference?
Anybody re-built these from mixed parts?

 

[bckyrdsnpr52]

Long story short,

Time for a new compressor

Last year after some 30 or so hours I seized the crank arm, replaced the whole piston + cylinder. But noticed a small crack on the aluminum housing (just above that upper rib) probably because of the stress when seized. It was just a matter of time something to happen. Here me go now shopping...

www.airgunnation.com

I picked up a new "basic/basic" YH for parts to rebuild my broken "set pressure" model.
Basically I need the aluminum crank housing replaced, and need a mental support shall I go deep dive and full elbow greasing or do it with fingertips only.

When I am looking into these two compressors, what makes the "basic" 200 bar only and the "set pressure" 300 bars?
Can I assume the electromotor is the same, pistons+cylinder the same and the difference is actually in two aluminum blocks for purging the oil (left block) and purgin the moisture (right block)?
What if I transfer the two aluminum purging blocks and the complete cylinder head onto the basic model - would that make it to 300 bars? This sounds simpler then remove the new crack housing and move it to old 300 bar compressor.

Mine had the same hairline crack, it leaked a little oil so I ignored it until it blew out a big chunk. Fortunately I have 2 spares and with all the parts, keep at least one running.

 

[bigHUN]

Mine had the same hairline crack, it leaked a little oil so I ignored it until it blew out a big chunk. Fortunately I have 2 spares and with all the parts, keep at least one running.

The YH which has the broken auminum crank housing - that upper (both cylinders and the piston) has less then ten hours on it. I was speculating to remove the complete upper half and replace on a new YH and put it in a bin with the rest of the spareparts. I have actually now 3 upper kits...