CT 26 water cooling flow

[crushers]

yes, Alamo is very good.
i called Shawn who i have dealt with for a decade or more.

i will not turn this into a he said she said.

lets talk reason:
the water jacket is a very small orfice that is located NO WHERE near the waste gate housing. there is no way in hell that running the coolant through the water jackets will prevent waste gate housing. duh.

running the coolant makes the system "a bit more forgiving" but proper warm up and cool down is essential no matter whether you do to do not run the cooling. it is not a cure all.

i will adhere to his words "i do not concur"...

in the end, you do it your way, i will do it mine. there is no harm in running the cooling and there is no harm in NOT running the cooling in our applications.

 

[Dougal]

Guess you didn't read this one.
Didn't get in a debate and lose.
Gave my answer as an opinion.
You can use any and trust any info you want ok by me.
My .02 cents and said so.
I tried to answer a question posed by a fellow Mudder who was asking for help, same questions I had when I started with Diesel's.
No attitude meant and apoligize for offending you.

Jim

I'm not sure what the point of the above post was.

Water jackets on automotive diesel turbos are almost always a legacy of the same turbo being used on petrol engines which still spit out very hot exhaust even at idle.
I haven't found a turbo designed solely for diesel engines which has a water jacket.

The wastegate housing cracks have nothing to do with a water jacket being used. As crushers said it's in a completely different part of the turbo.

 

[Zekester]

all the bickering aside....

my questions was intended to find out what lines to use, not to start a debate on using them or not....

I'm thinking it can't hurt to use it, now am asking what the best way to run the lines is...

 

[cruiser_guy]

I'm thinking it can't hurt to use it, now am asking what the best way to run the lines is...

I take mine off the heater lines. One off where the water enters the heater and one to where the water returns from the heater. I figure if Toyota wanted flow through the heater they'd be sure to have a pressure differential there which is basically all you need to get a little flow.

Have a look here at my FJ45LV build thread https://forum.ih8mud.com/fj45-owner...resto-thread-67-central-american-model-3.html there are a few pics there that might help.

 

[Zekester]

That's basically what i was looking at in the beginning of the post, putting in 2 tees in the heater inlet and outlet...the only problem this basically puts the heater and turbo in paralell, and will short circuit...I can't run it in series, the heater cut off valve stops flow,

 

[jake2far]

This page shows the water fittings and hoses for a CT26 from a 13BT, they route to the upper thermostat housing.
Part # 16331-58030 the price is 64.95, I don't know how accurate the price is. See if you can order it from Toyota, this part will allow you to hook up the water tubes. #16264 and 16281 are the hoses that route from the upper housing to the turbo. # 16278 and 16279 are metal tubes that the hoses go to which are hooked up to the turbo housing.
Good luck.

Jim

 

[cruiser_guy]

the only problem this basically puts the heater and turbo in parallel, and will short circuit...I can't run it in series, the heater cut off valve stops flow,

True, you cannot put the turbo and heater in series.

As for short circuiting there should be a pressure difference so the only thing that will happen is a slightly reduced flow when the heater is in operation and a slightly reduced heat output once you have the turbo. Neither of those is a big deal in my opinion.

 

[sandcruiser]

,snip>Chevron Delo 400 but not everyone has it nor is everyone willing to pay the $12-14 a gallon for it.

I sure wish I could find oil that cheap. I usually get stuck for more like $4/qt. Ouch.

 

[sandcruiser]

back on-topic: I don't know if the hd-t's turbo was specifically designed for a diesel or not, but it does have a water jacket. Toyota connected it. Those guys aren't usually accused of wasting money for the fun of it, and adding extra lines/ports and installing them, costs some money.

Based only on that, I think that Mr.T's engineers are under the impression that the water jacket has some positive effect on the longevity of the turbo/motor/oil, something. Or it adds reliability.

Either way, I don't see a downside to running the water through. If were retrofitting a turbo to another diesel, I'd look for a way to connect the water lines. Using the heater hoses seems like a fair solution.

 

[cruiser_guy]

I sure wish I could find oil that cheap. I usually get stuck for more like $4/qt. Ouch.

You can find cheaper oil but that's just it, it's CHEAP oil (lower on the SAE grading scale if it even has an SAE rating at all).

 

[sandcruiser]

I should clarify: I wish I could find decent oil at such a good price.

 

[Ron R]

back on-topic: .......

Either way, I don't see a downside to running the water through. If were retrofitting a turbo to another diesel, I'd look for a way to connect the water lines. Using the heater hoses seems like a fair solution.

I'm still in the proces of collecting parts (ducts, adapters, lines)
but I decided to go for a water connection.
Will pick up the water from the cold side of the radiator, more specific from the thermostat-housing, and connect the outlet to the heater line, downstream of the heater, connecting to a point just behind the thermostat.
These are more or less the same connections mr T uses on the HD-T engine.
For the oil provision I've been thinking about drilling into the oil channel at the original location but my big fear here is that chips will get into the oil-gallery, so maybe I'll choose the 'easy' way-out and have a feed from the oil-sender.
For the oil dump I'll drill the engine block analog to the install that AI does.

 

[Dougal]

back on-topic: I don't know if the hd-t's turbo was specifically designed for a diesel or not, but it does have a water jacket. Toyota connected it. Those guys aren't usually accused of wasting money for the fun of it, and adding extra lines/ports and installing them, costs some money.

Based only on that, I think that Mr.T's engineers are under the impression that the water jacket has some positive effect on the longevity of the turbo/motor/oil, something. Or it adds reliability.

Either way, I don't see a downside to running the water through. If were retrofitting a turbo to another diesel, I'd look for a way to connect the water lines. Using the heater hoses seems like a fair solution.

The HD-T turbo is a CT26 core, the CT26 cores are used on several toyota petrol engines.

The new toyota diesels all run garrett variable vane turbos. These are designed specifically for diesels and do not have water jackets.

 

[Tapage]

The HD-T turbo is a CT26 core, the CT26 cores are used on several toyota petrol engines.

The new toyota diesels all run garrett variable vane turbos. These are designed specifically for diesels and do not have water jackets.

AXT in australia sells turbo kits designed specifically for diesel engines .. and they are garretts with water suply ..

 

[Dougal]

AXT in australia sells turbo kits designed specifically for diesel engines .. and they are garretts with water suply ..

They are garretts cores which are also used on petrol engines. A mix of standard garrett parts which can be used on either petrol or diesel, packaged together to suit a diesel application.

 

[Tapage]

They are garretts cores which are also used on petrol engines. A mix of standard garrett parts which can be used on either petrol or diesel, packaged together to suit a diesel application.

it should .. no doubt, but they strongly recommends fit the water lines in their diesel application ( kits ) why take this additional risk in the customer installation if they are not huge benefit ?

 

[Dougal]

it should .. no doubt, but they strongly recommends fit the water lines in their diesel application ( kits ) why take this additional risk in the customer installation if they are not huge benefit ?

They're probably copying toyota. The only reference I could find on their website was "keeping underbonnet temps down". Given the water jacket is only on the bearing housing I can't see it making much difference, the exhaust is still out there radiating whole kilowatts.

Check out Holsets and other diesel-only turbos. Tell me when you find a water jacket.

 

[jake2far]

you do not need the water jackets hooked up. the cooling effect is minimal if ANY...

Just a bit more info from supposed experts.

Oil & Water Plumbing

The intake and exhaust plumbing often receives the focus leaving the oil and water plumbing neglected.
Garrett ball bearing turbochargers require less oil than journal bearing turbos. Therefore an oil inlet restrictor is recommended if you have oil pressure over about 60 psig. The oil outlet should be plumbed to the oil pan above the oil level (for wet sump systems). Since the oil drain is gravity fed, it is important that the oil outlet points downward, and that the drain tube does not become horizontal or go “uphill” at any point.
Following a hot shutdown of a turbocharger, heat soak begins. This means that the heat in the head, exhaust manifold, and turbine housing finds it way to the turbo’s center housing, raising its temperature. These extreme temperatures in the center housing can result in oil coking.
To minimize the effects of heat soak-back, water-cooled center housings were introduced. These use coolant from the engine to act as a heat sink after engine shutdown, preventing the oil from coking. The water lines utilize a thermal siphon effect to reduce the peak heat soak-back temperature after key-off. The layout of the pipes should minimize peaks and troughs with the (cool) water inlet on the low side. To help this along, it is advantageous to tilt the turbocharger about 25° about the axis of shaft rotation.
Many Garrett turbos are water-cooled for enhanced durability.

TurboByGarrett.com - Turbo Tech101

If anyone cares this is Garrett who makes turbo's, read it and find the parts about coking, heat soak, themal siphon, and water flow.
The placement of the lines by Toyota are for the thermal siphon not flow from the engine coolant system while running.

Jim

 

[jake2far]

why don't you remove the water jacket line on a 13BT, 2LTE and see how much coolant is actually being circulated.

also interesting, CHANGE YOUR OIL MORE OFTEN is rated above getting a water system.
curious, where did it say gas is the same as diesel?

my, my, a bit of serious attitude is showing. what happened? you get in a debate with a buddy and lost?

in the end, this is your opinion and that is all it is.

when you have a company that designs turbos for big rigs, off road monsters (industrial work trucks not the play toys) circle track, drag, street rods etc etc... they know their ****. i will trust the company that designs turbos for different applications to give me the information i need.

Yes crushers "in the end, it is your opinion and that is all it is." The last post I made was Garretts opinion maybe they know something. When you have a company that designs turbos ect ect.... I like the part about "...they know their s***."
Maybe you would like to go to Garretts web site to brush up
soooooooo.
TurboByGarrett.com - Turbo Tech101

Giving an answer to a question from a Mudder who wanted to know about hooking up the water lines was supposed to be helpful not a forum for you to humiliate, Zekester wasn't looking for a debate just an honest answer that would solve his problem.

Jim

 

[cruiser_guy]

Giving an answer to a question from a Mudder who wanted to know about hooking up the water lines was supposed to be helpful not a forum for you to humiliate.

Hey, at least we found something that "crushers" and "Dougal" can agree on!

That's got to be worth something.