Water Cooled Turbo Setups
Thread Starter
Honda-Tech Member
Joined: May 2003
Posts: 631
Likes: 0
From: Brisbane, QLD, Australia
I have a water cooled GT30R and a Tial MVS watercooled wastegate. I'm looking for pictures of how other people set up their turbos.
Is it ok to T off the water from the turbo and run it to the wastegate?
Post pics of your water cooled turbo and wastegate setups on hondas and other cars..
Is it ok to T off the water from the turbo and run it to the wastegate?
Post pics of your water cooled turbo and wastegate setups on hondas and other cars..
Pm the Tial rep on here https://honda-tech.com/forums/members/tial-999524198/
Who is Mr Robot?
iTrader: (2)
Joined: Jul 2004
Posts: 21,474
Likes: 10
From: ATL - Where the Pimps and Players dwell
Ideally you want to tee the coolant supply before the Turbo and wastegate to.give them both.the coolest coolant possible.
Won't really matter. The cartridge won't alleviate the endogenric effects of the heat transferrence from the turbine housing into the cartridge until the car shuts down anyway. Whether or not it is a "lower" temperature won't matter when using Ethyl Glycol or any mix thereof.
Trending Topics
Who is Mr Robot?
iTrader: (2)
Joined: Jul 2004
Posts: 21,474
Likes: 10
From: ATL - Where the Pimps and Players dwell
true, but having the coolest possible coolant entering the chra allows for maximum convection due to the higher temperature differential.
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
true, but having the coolest possible coolant entering the chra allows for maximum convection due to the higher temperature differential.
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
Here's one of my setups with the water cooling setup on the turbo and wastegate.

I'm using:
B&R Fittings water line kit that connects to a Koyo Dual core Half-sized radiator
JDL Auto Design bottom mount manifold (Doesn't set the turbo horribly low)
Water lines to wastegate are run from a tap in the thermostat housing and throttle body.
true, but having the coolest possible coolant entering the chra allows for maximum convection due to the higher temperature differential.
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
the cooler the coolant at one side of the turbo after shut off means that the coolant will flow better through the system since heat tries to equalize... it will be more efficient than trying to transfer heat to fluid thats near its temperature threshold.... kinda like how hot water freezes faster than cold water due to the greater temperature differential
Oh no no. Don't get me wrong, getting a good efficient mixture is definitely needed, one just shouldn't try and re-invent the wheel in an effort to slow down a small drop in the bucket
Thread Starter
Honda-Tech Member
Joined: May 2003
Posts: 631
Likes: 0
From: Brisbane, QLD, Australia
I am planning to run all of my water supply for the turbo / wastegate from the thermostat housing (H22) where the stock lines for the throttle body are.
Will probably drill/tap a thread for some -6AN fittings.
The real question remains, do I run a loop through the turbo to the wastegate and back to the engine or do I run 2 seperate sets of lines?
Thanks for the picture BTW. Any other pictures of setups are welcome.
Will probably drill/tap a thread for some -6AN fittings.
The real question remains, do I run a loop through the turbo to the wastegate and back to the engine or do I run 2 seperate sets of lines?
Thanks for the picture BTW. Any other pictures of setups are welcome.
Have to bump this old thread to ask a question. I'm looking for anyone's closer pictures or explanations of how their system is ran for just the turbo.
http://www.turbobygarrett.com/turbob...er_Cooling.pdf
This is a good read ^ and it says the center cartridge should be at a 20 degree angle from horizontal with the feed coming in on the lower of the two water ports and the return ending higher than the turbo coming from the higher port, with the flow going "uphill" the whole return.
Is everyone with a water cooled turbo following these guidelines?
http://www.turbobygarrett.com/turbob...er_Cooling.pdf
This is a good read ^ and it says the center cartridge should be at a 20 degree angle from horizontal with the feed coming in on the lower of the two water ports and the return ending higher than the turbo coming from the higher port, with the flow going "uphill" the whole return.
Is everyone with a water cooled turbo following these guidelines?
Yeah I knew it's the most efficient way I just have seen other info, b&r fittings kit says return can be welded on top or bottom end tank of radiator and go-autoworks sells a radiator with the -6 on the bottom end tank as a return as well, I'd think the bottom tank would be too low for a return fitting. I did not check the FAQs though just searched, my bad. Looks like mine will be welded to the top end tank of the radiator. Thanks guys.
Who is Mr Robot?
iTrader: (2)
Joined: Jul 2004
Posts: 21,474
Likes: 10
From: ATL - Where the Pimps and Players dwell
My only concern with using the bottom of the radiator is you're putting hot coolant from the chra back into the cooling system without it being cooled
Using the top means that the coolant from the turbo will pass through the core and be cooled.
Using the top means that the coolant from the turbo will pass through the core and be cooled.
You've known me for years.. Probably one of the longest. Now WHY would I try and say anything else that doesn't make sense like that, my friend?
My thoughts were the bottom of the radiator would be too low (lower than the turbo) so you wouldn't get the "uphill" travel through the whole return line like the article describes (above the picture of the center housing on page 6) , leading to the thermal siphoning not taking place like it should after the car is shut off.
I'm not arguing I'm just trying to gain some knowledge ha. Unless that is what you are saying doesn't matter
I'm not arguing I'm just trying to gain some knowledge ha. Unless that is what you are saying doesn't matter
Again, when the entire coolant system is pressurized the way they are with our sized engines and radiators, it doesn't make a difference. the Article looks at optimal conditions. I'd never tilt the cartridge over 10-20 degrees just for water cooling, it could possibly affect oil drainage. there's a balance to everything.
Having water lines hooked up to both the turbo and the wastegate is great insurance in running on the circuit, and I didn't need a MILLER welder to do it.
Having water lines hooked up to both the turbo and the wastegate is great insurance in running on the circuit, and I didn't need a MILLER welder to do it.
I have a water cooled GT30R and a Tial MVS watercooled wastegate. I'm looking for pictures of how other people set up their turbos.
Is it ok to T off the water from the turbo and run it to the wastegate?
Post pics of your water cooled turbo and wastegate setups on hondas and other cars..
Is it ok to T off the water from the turbo and run it to the wastegate?
Post pics of your water cooled turbo and wastegate setups on hondas and other cars..
Last edited by Jim Hiscott; Oct 13, 2022 at 09:20 PM.



