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Old 08-27-2010, 12:39 PM   #1
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Default Whats the current position on Water cooling turbos.

Hey Guys.

I remember we had a discussion about this back in the day regarding water cooling turbos.

Has the stance changed? I remember their being several who said it was a waste of time and effort as well as an additional point of failure while some ran water cooling.

Has the consensus leaned heavily in any direction or still down the middle?

Last edited by Saml01; 08-27-2010 at 01:16 PM.
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Old 08-27-2010, 12:41 PM   #2
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BB turbo = Yes.
Journal turbo = doesn't matter either way.

Thats my personal opinion.
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Old 08-27-2010, 12:49 PM   #3
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Best is probably water cooled with a way of continuing cooling water circulation for a few minutes after shutdown.
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Old 08-27-2010, 01:57 PM   #4
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I think the last time we did this, it was concluded that the water lines were there as a heat-soak strictly for post-shutdown to keep oil from burning inside the CHRA, and that if you simply let the car idle for 30seconds or didn't hit 30psi of boost pulling into your driveway, you were probably all right.

Can you run a water-cooled turbo without the water?
Sure, but it probably won't have the longevity if you ran with water. What kind of oil you use, driving habits, environment, shutdown temps, track or non, etc... probably have as much to do with the lifespan of your turbo as running with or without water on an equipped turbo.

I don't remember reading anything about bb vs jb turbos being different in this regard, but I'd assume bb turbos with tighter tolerances are a bit less tolerant.

I ran off-the-shelf Kragen coolant hose for 4 years under the hood of my 100% DIY getto-rigged '93 and never had a problem. The feed/return off the engine are there, all you need are a couple of hose-barbs for the CHRA or one of the eBay adapter kits for like $20 and some hose clamps.

Bottom line... there isn't a single reason not to do it that outweighs the benefits and piece of mind of doing it.
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Old 08-27-2010, 03:34 PM   #5
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^ I am doing it, I just recently developed a small leak in one of my lines and lack of garage and will power to tinker with the car is making me want to bitch out and forget water cooling.

Where can I buy some silicone hose? Vatozone doesnt have it, and its not regularly stocked at any of the smaller stores.
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Old 08-27-2010, 03:42 PM   #6
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Quote:
Originally Posted by olderguy View Post
Best is probably water cooled with a way of continuing cooling water circulation for a few minutes after shutdown.
Water cooling is primarily for post-shutdown:

Quote:
Originally Posted by TurboByGarrett.com
Water cooling is a key design feature for improved durability and we recommend that if your turbo has an allowance for watercooling, hook up the water lines. Water cooling eliminates the destructive occurrence of oil coking by utilizing the Thermal Siphon Effect to reduce the Peak Heat Soak Back Temperature on the turbine side piston after shut-down. In order to get the greatest benefit from your watercooling system, avoid undulations in the water lines to maximize the Thermal Siphon Effect.





Negative degrees: water outlet of center housing is lower than water inlet
Positive degrees: water outlet of center housing is higher than water inlet

For best results, set the orientation of the center housing to 20.

Significant damage to the turbo can occur from improper water line setups

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Old 08-27-2010, 03:44 PM   #7
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Quote:
Originally Posted by Saml01 View Post
^ I am doing it, I just recently developed a small leak in one of my lines and lack of garage and will power to tinker with the car is making me want to bitch out and forget water cooling.

Where can I buy some silicone hose? Vatozone doesnt have it, and its not regularly stocked at any of the smaller stores.
The Noble with twin turbo engine runs 2554 turbo's with no water. Just let it cool down at the end of a hard run.
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Old 08-27-2010, 04:55 PM   #8
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It doesn't take long to set up water cooling and imo the points of failure that are added are negligible. I mean we are using/building/tuning a box with 4 cylinders that house explosions and then we are pressurizing it. I think if one can manage the task of keeping it together hooking up 4 small coolant lines should be cake.
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Old 08-28-2010, 03:46 AM   #9
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Quote:
Originally Posted by astroboy View Post
It doesn't take long to set up water cooling and imo the points of failure that are added are negligible. I mean we are using/building/tuning a box with 4 cylinders that house explosions and then we are pressurizing it. I think if one can manage the task of keeping it together hooking up 4 small coolant lines should be cake.
4 coolant lines for the turbo? could have swore it was 2...
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Old 08-28-2010, 01:07 PM   #10
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Quote:
Originally Posted by turboT View Post
4 coolant lines for the turbo? could have swore it was 2...
I think he just convinced me to not do it at all
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Old 08-28-2010, 01:57 PM   #11
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If I had a BB turbo I'd plumb the water lines, otherwise, when I had a CHRA that had water ports, I still never bothered.
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Old 08-28-2010, 05:45 PM   #12
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4 fittings, 2 lines, I don't know?
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Old 08-28-2010, 11:06 PM   #13
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Where do you guys get your silicone water hose? I dont want to go back to rubber again.
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Old 08-28-2010, 11:19 PM   #14
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I like to bore out some long *****'s and if I need extra reach I will fuse a couple together. Haven't had any problems yet (fingers now crossed).
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Old 08-29-2010, 12:04 AM   #15
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I'm seeing cooler water temps from switching over from a t25 to a t3 non water cooled??
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Old 08-29-2010, 01:02 AM   #16
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Quote:
Originally Posted by Saml01 View Post
Where do you guys get your silicone water hose? I dont want to go back to rubber again.
http://www.mcmaster.com/#silicone-coolant-hose/=8lx32q

--Ian
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Old 08-29-2010, 02:48 AM   #17
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I use the FM solid lines, never replacing those sombitches again. God I hated that mess, damn coolant. _
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Old 08-30-2010, 10:14 AM   #18
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Quote:
Originally Posted by Der_Idiot View Post
I use the FM solid lines, never replacing those sombitches again. God I hated that mess, damn coolant. _
Nice suggestion. Ill have to check this out. My be a worthwhile upgrade.

How much did they run you?
Im guessing you called to order, they arent on their site.

Quote:
Originally Posted by codrus View Post
Youre the best. I couldnt find a site anywhere.
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Old 08-30-2010, 10:57 AM   #19
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Quote:
Originally Posted by Saml01 View Post
Nice suggestion. Ill have to check this out. My be a worthwhile upgrade.

How much did they run you?
Im guessing you called to order, they arent on their site.
They're on the Turbochargers -> Parts and Upgrades. Page 2.

http://www.flyinmiata.com/index.php?...temsperpage=16
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Old 08-30-2010, 02:47 PM   #20
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^ Cool. Thanks.

Expensive though.

-------------

How about this?

http://cgi.ebay.com/ebaymotors/Turbo...item230970c58c
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