3/8 or 1/2...this again?

mfpmax · 09-18-2002, 08:14 PM

So another thread about going back to watercooling.

My old setup was 3/8 tubing, so I've got a bunch of 3/8 inch crap laying around, including some hose.
The case currently isn't that large so the length(s) of tubing won't be very long.

The setup is proably gonna be a 1.3-1.7GHz CPU at first...possibliy overclocked later on.

So, should I go ahead and keep the 3/8 inch design parameters(along with ordering a block with 3/8 inch fittings), or should I go with a 1/2 setup, since that was all the rage when I got out of watercooling a year or two ago.

My old case is in my sig, which may be what I use for the setup...I'm looking into something bigger such as an Antec SX830 to put it in though.

redleader · 09-19-2002, 01:12 AM

You're considering buying 3/8 in because you have $15 worth of (crappy) 3/8 in tube? Buy some 1/2 tygon and be done with it.

mfpmax · 09-19-2002, 02:13 AM

3/8 is also easier to fit into the system than the larger 1/2.

If I don't really need to upgrade to larger flow, than why. Besides, those types of answers never work

And if I were to buy Tygon, where would I get it locally. As I'm not to into buying off the internet and waiting(don't try to figure it out).

Oh yeah, did I mention i'm lazy too?

koslov · 09-19-2002, 02:38 AM

Here's something to think about: if you go with 3/8" ID tubing, you will have no flow restriction from 1/2" OD fittings (no turbulence when using same size ID; with 1/2" ID hose and 1/2" OD fittings, there will be turbulence where the hose meets the barb). Also, you get a much tighter seal, oftentimes you won't need a hose clamp. But then again, all that 3/8" tubing will add some restriction compared to 1/2". I say using 3/8" is worth it, for the tight seal and easier routing.

I'm planning on using 3/8" tubing with my 1060, so even if it does produce a little more restriction than 1/2" tubing, I think it can handle it

. Also, my GPU block has 3/8" OD barbs, so instead of using reducers (which could restrict flow a lot), I'm opting to go for homogenous hose.

I guess we will know definitively soon enough once we see some hard data

.

SCompRacer · 09-19-2002, 02:51 AM

Maybe it depends on what components you got as to the difference it would make.

I had a Danger Den Maze2, Eheim 1250, 6" x 6" heater core with 1/2" lines. Dropping to 3/8" lines cost me a 1C increase in loaded CPU temps, same system, same ambient temp. Don't have my notes here but flow dropped from 95GPH to 64GPH if I recall correctly. With a restrictive 5/16 inlet/outlet trans cooler and 3/8" lines, flow dropped to 55GPH and temps went up one 1C additional.

Brad · 09-19-2002, 03:18 AM

just run 1/2", it's the wave of the future, 3/8" is so year 2000 :P

bigben2k · 09-19-2002, 09:36 AM

Good one Brad!

1/2 is for those that have a bigger pump, like a 1250 or 1060. 3/8 tubing is actually restrictive for those pumps.

Koslov is right though, but it isn't anything that can't be fixed!

mfpmax · 09-19-2002, 01:55 PM

Quote:

Originally posted by Brad
just run 1/2", it's the wave of the future, 3/8" is so year 2000 :P

So is 1/2 actually

Thats when I got into watercooling, and thats when the conversion happend...can't remember the first usage of 1/2 though, but it was the same year or 2001.

And 1 degree won't be much, as the setup won't be an extreme adventure in overclocking, only a quest to get back my watercooling roots and have a quietier system.

Auraka · 09-19-2002, 11:11 PM

Is 3/8" Tygon really reasonable to push onto poly barbs? Does it require heating?

I've got an Eheim 1046 with a 3/8" discharge, and was planning to use 3/8" tubing from the pump to block inlet for higher flow velocity, with 1/2" tubing back to the pump (through a BIX) to minimize any resistance as this pump will need all the help it can get. Don't really want to spring for a new pump until I definitely need it.

This is my rig.

V12|V12 · 09-20-2002, 12:05 AM

Man, just make the switch and get some damn 1/2"! Hell I'm running a mix of 1/2" and 3/4"! I just make adapters for the 3/4" to fit onto the 1/2" barbs, just cut a piece of 1/2" and grease it up, insert in 3/4" and clap. perfect seal. 3/8 provides crappy flow, don't waste you're time

ANd what's with changing the amount of posts rankings?! I've worked hard to get my former "Pelt Chilled" moniker!! BRING THEM BACK!!! I ain't no water cooling "Noob" AT ALL. I've been doing it for years and years.

mkosem · 09-20-2002, 12:31 AM

hmm, I was using 3/4" hose back in the day.

--Matt

#Rotor · 09-20-2002, 06:31 AM

hehe and I can make 3/8" perform as if it was 3/4"

mfpmax · 09-20-2002, 01:39 PM

Quote:

Originally posted by #Rotor
hehe and I can make 3/8" perform as if it was 3/4"

that sounds....kinky

MadDogMe · 09-22-2002, 04:16 AM

Quote:

I've got an Eheim 1046 with a 3/8" discharge, and was planning to use 3/8" tubing from the pump to block inlet for higher flow velocity, with 1/2" tubing back to the pump (through a BIX) to minimize any resistance as this pump will need all the help it can get. Don't really want to spring for a new pump until I definitely need it.

You can get kits to change between 1/2 & 3/8inch sizes...

http://www.overclockedpc.co.uk/default.php?cPath=38_24

http://www.overclockedpc.co.uk/produ...products_id=48

Can O' Beans · 09-22-2002, 06:18 AM

You're all so last year.. I'm using 2"

redleader · 09-27-2002, 07:48 PM

Quote:

Thats when I got into watercooling, and thats when the conversion happend...can't remember the first usage of 1/2 though, but it was the same year or 2001.

First I saw of it was a thread on [H]ard in April (?) of 2001 where someone converted his Maze2 classic to use 1/2. Then DD upgraded to the Maze 2 mark 2 which was made for 1/2 a few months later.

mfpmax · 09-27-2002, 09:10 PM

Quote:

Originally posted by redleader
First I saw of it was a thread on [H]ard in April (?) of 2001 where someone converted his Maze2 classic to use 1/2. Then DD upgraded to the Maze 2 mark 2 which was made for 1/2 a few months later.

Yeah, something like that.

I think it was RockHammer maybe.

Anyone got pictures of a 1/2 barb and a 3/8 barb?

kenrippy · 09-30-2002, 12:02 PM

you can find almost anything you need at McMaster Carr. don't know about overseas shipping but if you're in US they rule. check out their Tygon stuff also

mfpmax · 09-30-2002, 01:50 PM

I run down to Home Depot and Lowes for my fittings.

Side by Side comparison picture.

mfpmax · 10-05-2002, 09:00 PM

I found these on someone's website.

The barb piece itself has a different size...but what about the ID of at the base of the barb.

I guess the overal change in diameter is what matters?

09-18-2002, 08:14 PM	#1
mfpmax Cooling Savant Join Date: Oct 2000 Location: Rockledge,FL,US Posts: 731	3/8 or 1/2...this again? So another thread about going back to watercooling. My old setup was 3/8 tubing, so I've got a bunch of 3/8 inch crap laying around, including some hose. The case currently isn't that large so the length(s) of tubing won't be very long. The setup is proably gonna be a 1.3-1.7GHz CPU at first...possibliy overclocked later on. So, should I go ahead and keep the 3/8 inch design parameters(along with ordering a block with 3/8 inch fittings), or should I go with a 1/2 setup, since that was all the rage when I got out of watercooling a year or two ago. My old case is in my sig, which may be what I use for the setup...I'm looking into something bigger such as an Antec SX830 to put it in though. __________________ My old and retired watercooling setup. Watercooled K6-2 450 at 600 Also Retired - Watercooling an XP1800@1782MHz

09-19-2002, 02:13 AM	#3
mfpmax Cooling Savant Join Date: Oct 2000 Location: Rockledge,FL,US Posts: 731	3/8 is also easier to fit into the system than the larger 1/2. If I don't really need to upgrade to larger flow, than why. Besides, those types of answers never work And if I were to buy Tygon, where would I get it locally. As I'm not to into buying off the internet and waiting(don't try to figure it out). Oh yeah, did I mention i'm lazy too? __________________ My old and retired watercooling setup. Watercooled K6-2 450 at 600 Also Retired - Watercooling an XP1800@1782MHz

09-19-2002, 03:18 AM	#6
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	just run 1/2", it's the wave of the future, 3/8" is so year 2000 :P __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

09-19-2002, 09:36 AM	#7
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Good one Brad! 1/2 is for those that have a bigger pump, like a 1250 or 1060. 3/8 tubing is actually restrictive for those pumps. Koslov is right though, but it isn't anything that can't be fixed! __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

09-20-2002, 12:05 AM	#10
V12\|V12 Cooling Savant Join Date: May 2002 Location: Ohio-State! <--Money Hussle! SUCKS Posts: 292	Man, just make the switch and get some damn 1/2"! Hell I'm running a mix of 1/2" and 3/4"! I just make adapters for the 3/4" to fit onto the 1/2" barbs, just cut a piece of 1/2" and grease it up, insert in 3/4" and clap. perfect seal. 3/8 provides crappy flow, don't waste you're time ANd what's with changing the amount of posts rankings?! I've worked hard to get my former "Pelt Chilled" moniker!! BRING THEM BACK!!! I ain't no water cooling "Noob" AT ALL. I've been doing it for years and years. __________________ XP 1600+ AGOIA-Y (GreenLabel, UNLOCKED!@/ NF7-S 2.0/ PC 2700 DDR 10.5*172FSB(1806/ 1991 high), Vcore 1.792...@84.95Watts --86' Chevette Heater Core --1/2" Vinyl tubes --Via1300-Stealth Mod(QUIET!) ---Home made copper-tube block ---PVC small internal res

09-19-2002, 01:12 AM	#2
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	You're considering buying 3/8 in because you have $15 worth of (crappy) 3/8 in tube? Buy some 1/2 tygon and be done with it.

09-19-2002, 02:38 AM	#4
koslov Cooling Savant Join Date: Jul 2002 Location: Posts: 264	Here's something to think about: if you go with 3/8" ID tubing, you will have no flow restriction from 1/2" OD fittings (no turbulence when using same size ID; with 1/2" ID hose and 1/2" OD fittings, there will be turbulence where the hose meets the barb). Also, you get a much tighter seal, oftentimes you won't need a hose clamp. But then again, all that 3/8" tubing will add some restriction compared to 1/2". I say using 3/8" is worth it, for the tight seal and easier routing. I'm planning on using 3/8" tubing with my 1060, so even if it does produce a little more restriction than 1/2" tubing, I think it can handle it . Also, my GPU block has 3/8" OD barbs, so instead of using reducers (which could restrict flow a lot), I'm opting to go for homogenous hose. I guess we will know definitively soon enough once we see some hard data .

09-19-2002, 02:51 AM	#5
SCompRacer Cooling Neophyte Join Date: Apr 2002 Location: Illinois Posts: 94	Maybe it depends on what components you got as to the difference it would make. I had a Danger Den Maze2, Eheim 1250, 6" x 6" heater core with 1/2" lines. Dropping to 3/8" lines cost me a 1C increase in loaded CPU temps, same system, same ambient temp. Don't have my notes here but flow dropped from 95GPH to 64GPH if I recall correctly. With a restrictive 5/16 inlet/outlet trans cooler and 3/8" lines, flow dropped to 55GPH and temps went up one 1C additional.

09-19-2002, 11:11 PM	#9
Auraka Cooling Neophyte Join Date: Sep 2002 Location: OH, USA Posts: 5	Is 3/8" Tygon really reasonable to push onto poly barbs? Does it require heating? I've got an Eheim 1046 with a 3/8" discharge, and was planning to use 3/8" tubing from the pump to block inlet for higher flow velocity, with 1/2" tubing back to the pump (through a BIX) to minimize any resistance as this pump will need all the help it can get. Don't really want to spring for a new pump until I definitely need it. This is my rig.

09-20-2002, 12:31 AM	#11
mkosem Cooling Savant Join Date: May 2001 Location: here Posts: 494	hmm, I was using 3/4" hose back in the day. --Matt __________________ If you can't cool it, blow it up!! http://www.mattkosem.com

09-20-2002, 06:31 AM	#12
#Rotor Cooling Savant Join Date: Feb 2002 Location: Dione, sector 4s1256 Posts: 852	hehe and I can make 3/8" perform as if it was 3/4" __________________ There is no Spoon....

09-22-2002, 06:18 AM	#15
Can O' Beans Cooling Savant Join Date: Aug 2002 Location: Pa - USA Posts: 264	You're all so last year.. I'm using 2"

09-30-2002, 12:02 PM	#18
kenrippy Cooling Neophyte Join Date: Sep 2002 Location: so. california Posts: 20	you can find almost anything you need at McMaster Carr. don't know about overseas shipping but if you're in US they rule. check out their Tygon stuff also

09-30-2002, 01:50 PM	#19
mfpmax Cooling Savant Join Date: Oct 2000 Location: Rockledge,FL,US Posts: 731	I run down to Home Depot and Lowes for my fittings. Side by Side comparison picture. __________________ My old and retired watercooling setup. Watercooled K6-2 450 at 600 Also Retired - Watercooling an XP1800@1782MHz

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