Upgrading the water pump on a Yong Heng compressor

[Corvid_hunter]

I'm just getting into PCPs, and have had a Yeng Hong for about 2 weeks now. I've already upgraded the water pump with this one....

https://www.amazon.com/gp/product/B01FXDUQR0/ref=ppx_yo_dt_b_asin_title_o06_s01?ie=UTF8&psc=1

It made a SIGNIFICANT difference in not only how fast the heat/temp rises, but it allowed me to fill a 30 cu ft bottle/tank from empty to 4000psi without the compressor temp every getting higher then 56c. That was with a full 5 gal bucket of plain water (nothing else) as the coolant reservoir.

Something else I did, just as an experiment, was to take strips of aluminum foil, and put makeshift heat "fins" on the stage tubing of the compressor... it looks stupid, but it actually works to dissipate more heat! At first I tried the "wet rag" wrapped on those tubes, but it was a mess on the bench, and once the rags started steaming, it was actually counterproductive. 

I have also browsed around the web, looking for "clamp on fins" such as those that are used in hydronic heating application (hot water heating) but never found anything small enough to be usable. I even went so far as to cut up an old "A" coil from a central air unit....to see if I could cut out and split the finned copper tubes.....then put them on the compressor stage tubing with heat conductive "glue".... but the "fins" just fall apart when splitting the copper tubes.

Interesting modifications. Can you post some pics of your fins.

 

[Gerry52]

These heat sink "fins" were on a Tuxing given to me. Moved them to my YH. Looking EVERYWHERE but can't find more. They really help dissipate heat.

 

[Centercut]

Those are for a transistor TO-5 can. I had them on Nick's twin cylinder Tuxing between the first and second stage, and he had some extras he put on the single cylinder version he gave you. They come without the slit to slide over the tubing but I just nipped them with a wire cutter. I think they came by the 100 on e-Bay. 

 

[Gerry52]

Oh, YOU slit them! Brilliant! Thought they came that way you did such a good job. Still got the Ebay link?

 

[Bigragu]

I told myself if I ever ran a Yong heng id put a billet aluminum power steering cooler in line, to soak in and pull the heat. They are typically round, about 12” long, 3” in diameter, with exterior fins. 3/8” ports in and out, and Summit or Jegs has these for pretty cheap.

 

[rc4fun]

Those are for a transistor TO-5 can. I had them on Nick's twin cylinder Tuxing between the first and second stage, and he had some extras he put on the single cylinder version he gave you. They come without the slit to slide over the tubing but I just nipped them with a wire cutter. I think they came by the 100 on e-Bay.

Great idea. 

I ordered some silicone plugs with holes 4mm & 6mm id's and I think 16mm od along with 16mm silicone tube and plan to make water jackets for the tubes. I ordered small bulkhead nipples to run water through the tubing. Should be easy to seal with wire-ties and worst case hose clamps. I plan to cut a slit in the plugs to get them on the tubes and slip the tube over the nuts after removing the tubes from the compressor. I do not want to chance damaging the HP seals! If you know where to get new HP metric seals then the plugs wouldn't need to be cut. You could remove the compression nuts and seals then slip the plugs on.

Note I used the wet rag trick once or twice until i found that the compression nuts will rust!

 

[rfuss928]

I was considering a similar water jacket modification. Please post photos of the results.

 

[rc4fun]

Waiting for my order from you know where. Couldn't find what I wanted in US.

 

[H3rd]

I just received one of these pumps. The stock water pump does not seem to be working right, well not the pump. I plug everything in and the water goes in the inlet but only dribbles out the outlet. I do not think this is normal. Is there anything I can check?

 

[daddyrabbit]

I just received one of these pumps. The stock water pump does not seem to be working right, well not the pump. I plug everything in and the water goes in the inlet but only dribbles out the outlet. I do not think this is normal. Is there anything I can check?

If it's the stock yong heng water pump you can look on the back of the pump and there is a rotating door that controls the water inlet flow. Make sure this inlet door is fully opened.

 

[H3rd]

I looked at that and it was fine, the pressure from the pump is good. I ended up taking the top part of the pump apart and found that the top (outlet) elbow was threaded in too far and "plugging up" the port. 

Sorry for the false alarm.