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MCP655 (D5) Port and Polish Mod - Page 3

post #21 of 25
Quote:
Originally Posted by NoGuru View Post
So you don't care if the pumps are made the same way?
Considering all the aftermarket tops that are made for these now...no.
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post #22 of 25
Quote:
Originally Posted by Sider View Post
Considering all the aftermarket tops that are made for these now...no.
Then your post means nothing.
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post #23 of 25
Quote:
Originally Posted by Martinm210 View Post


Quote:



Originally Posted by Apollo4g View Post

Did you bore both barbs on the pump?

also did you do it all the way in or just the top part?



I bored them out all the way, not very much though, maybe 1/64" if that. I could probably bore it out more, but I didn't want to take too much away from the material strength. You could probably bore the entire end out and tap a 5/8" barb in there though



I've been checking out Langs site and they have all sorts of tops for these things.


I want the D5-38/720B top. Oh and their site says these things are good for 24V.
http://www.lainginc.com/pdf/D5_Vario.pdf


Where can I find a cheap 24V - 2 Amp power supply...looks like at 12V at setting 5...they're only turned half way up..lol!

Check this shops, there is a lot of nice things for watercooling including 24V pump controller

http://www.aquatuning.de/product_info.php/language/en/info/p10714_Koolance-CTR-SPD24-24V-Pump-Controller.html

http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=59_439_772&products_id=28110
Edited by D3nsityD3nt - 9/15/12 at 6:10pm
post #24 of 25
Quote:
Originally Posted by Martinm210 View Post

Since I was switching out my T line fitting and barb fittings out from 1/2" to 5/8" I decided I'd take a look inside my MCP655 pump to make sure it was all good and clean.


It was...but...


I checked out the impeller design and upon inspection I noticed the outlet was poorly casted. A sharp open bay to pipe is a significant exit loss, and not only that, there is also a portion that slightly extends into the pump.



**Off I go to the garage for my trusty dremel and drill motor***

A while later slightly boring out the outlet, and using my various dremel bits, I had a much smoother flowing outlet that looked like this:




And while I was at it, those barbs are awefully sharp too:




Better fix those...




Ahhh much better.


I did some flow tests using my trusty 5 gallon bucket and came up with the following:

Pump and 10' of 1/2ID tubing only

Before 3 gallons in 1 minute and 25 seconds = 2.12 gal/min

After 3 gallons in 1 minute and 6 seconds = 2.73 gal/min
A 28% improvement on pump + 10' tubing only.

Then for the real test, how my loop performs include D-Tek Fusion + MCW60 + MCR320 + MCR320 + T-line + about 8' of 7/16ID Tygon + 10' drainage tube for the test

Before 3 gallons in 2 minutes and 1 second = 1.49 gal/min

After 3 gallons in 1 minute and 50 seconds = 1.64 gal/min
A 10% improvement in a CPU + GPU + 2 rad loop, not bad!



Some of that might have been from upsizing the barb and t-fitting to 5/8", but I suspect most of it was the pump mod.


I knew all my wrenching and modding days with the dirtbike had some use in the computer somewhere

Devil is hidden in details - used to say my grandpa devil.gif

You made me checking my pumps. Exellent work, exellent idea.

Thanks for shearing it thumb.gif
post #25 of 25
Quote:
Originally Posted by Martinm210 View Post


Quote:



Originally Posted by DuckieHo View Post

Write a letter to Laing who produces the pumps! I ay have to do this myself then.
http://www.lainginc.com/



I should, maybe I can talk them into giving me a free pump for my idea..

Or entered a DDC-1T pump OCN FREEBIE give-away. smile.gif http://www.overclock.net/t/1301539/freebies-2x-laing-ddc-1t-mcp350-wc-pumps/0_30
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