[Dougal]

Originally Posted by MOTERRA

i have oil and water lines ...should i use the water cooling? or just block it off? one of the holes the thread is stripped....i guess i could tap it bigger...

You've got two choices.
If you plumb in water lines, it has to be done in a way that the water can thermosiphon through it when the engine is off. Otherwise it'll boil and create steam pockets. If the water flow is restored, then the thermal shock can crack the housing.

Or don't plumb it in. I don't block mine off completely, I leave one plug unsealed so it doesn't pressurise with the heating/cooling.

[MOTERRA]

I think i will leave the water jacket unhooked...then i won't fug anything up

[bull]

Originally Posted by Dougal

You've got two choices.
If you plumb in water lines, it has to be done in a way that the water can thermosiphon through it when the engine is off. Otherwise it'll boil and create steam pockets. If the water flow is restored, then the thermal shock can crack the housing.

Or don't plumb it in. I don't block mine off completely, I leave one plug unsealed so it doesn't pressurise with the heating/cooling.

How does one do thermosiphon?

[lowenbrau]

A bag of weld 90s, a t-3 from Lebaron and a bunch of porting will double your power.

[lowenbrau]

This is what you do if you have less weld 90s and a couple ts

[lowenbrau]

Add a Saab aftercooler and some ebay silicon and you're ready to burn rubber.

[MOTERRA]

that's bad azz lowenbrau nice work...

[ozwallaby]

Hey Lowenbrau, are both those manifolds on a 3b, and does the equal length actually give you any extra? In the first foto (equal length) does the plumbing get in the way of the side plate I can see partially hidden behind it. Can you get at the lifters n pushrods behind the manifold. Not being critical, I recon it's great, just enquiring...

ps Do 3b and 13bt heads have the same exhaust manifold stud pattern. thnks

[lowenbrau]

The equal length one is on a 3B that has a lot of porting/polishing done to the head including opening up the pre cups. The other one was briefly on a stock 13bt engine with the aftercooler before the rig was parted out. Its hard to say with any authority which engine made more power.

3b and 13bt manifold pattern is the same until mid 88 when the 3BII came out, then its the same as a 14B

[Dougal]

Originally Posted by bull

How does one do thermosiphon?

Just arrange the hoses so the hot water can rise up and out the turbo, while the cold water gets drawn in.
Tilting the bearing housing slightly towards the uphill hose can help too.

[cruiser_guy]

Originally Posted by lowenbrau

Add a Saab aftercooler.

Can you share with us what year and model Saab the intercooler is from? I'm considering intercooling the BJ60.

Originally Posted by MOTERRA

i have oil and water lines ...should i use the water cooling? or just block it off? one of the holes the thread is stripped....i guess i could tap it bigger...

I am in favor of connecting the water lines. I have the water lines connected on all the turbos. It's not a lot more work and I have to believe that the additional cooling cannot hurt anything. The book "Maximum Boost" figures that the water cooling can extend the turbo life by a factor of 2. Granted it is based on gassers but I don't suppose that diesels are that much different.

[Dougal]

Originally Posted by cruiser_guy

The book "Maximum Boost" figures that the water cooling can extend the turbo life by a factor of 2. Granted it is based on gassers but I don't suppose that diesels are that much different.

The exhaust gas on a petrol is far hotter than your diesel can sustain. The stoichiometric air/fuel ratios they run at also keeps the exhaust gas at a far hotter temp, not allowing the exhaust to cool the turbo in low load situations like a diesel does.

Most of the water jacketed turbos are a legacy of that model turbo also being fitted to petrol engines.
If you find a turbo that is exclusively fitted to a diesel it is very rare to be water jacketed.

[brownbear]

Originally Posted by MOTERRA

i have oil and water lines ...should i use the water cooling? or just block it off? one of the holes the thread is stripped....i guess i could tap it bigger...

I don't bother with the water line, Capped off on my truck.

[Tapage]

Originally Posted by Dougal

Most of the water jacketed turbos are a legacy of that model turbo also being fitted to petrol engines.
If you find a turbo that is exclusively fitted to a diesel it is very rare to be water jacketed.

It means maybe that the CT-26 come from the gasser world throught the MR2 or the Supra ..

[MOTERRA]

will post some pics when I get my manifold sorted out....

[hedgehog23]

well here is a turbo idea.

eBay Motors: T3 T4 TURBO INTERNAL WASTEGATE +OIL LINE + V-Band Clamp (item 320233423158 end time Apr-27-08 17:56:58 PDT)

[Dougal]

Originally Posted by hedgehog23

well here is a turbo idea.

eBay Motors: T3 T4 TURBO INTERNAL WASTEGATE +OIL LINE + V-Band Clamp (item 320233423158 end time Apr-27-08 17:56:58 PDT)

A lot of the aftermarket ricer stuff is sold as an "upgrade" which for them means bigger than stock. Usually it's better to get the original turbo from the car that's being upgraded.

Too big on a diesel and you lose all your low end boost and torque.

[cruiser_guy]

Originally Posted by Dougal

Usually it's better to get the original turbo from the car that's being upgraded.

Too big on a diesel and you lose all your low end boost and torque.

That's where my CT26 is from. Someone wanted a bigger on on their Supra so I picked up the old one.

[MOTERRA]

I got a stock turbo from a dodge free... no shipping needed.... local junkyards are a good place to look...

[dieselcruiserhead]

If anyone is in the market, we pieced together literally every part other than the high pressure oil fill line to the turbo for a 3B using the Mitsubishi diesel homebrew setup. Flip the stock manifold and it bolts up. Right as we got it all together, he got a big check/payday from work and ordered a Turbo Glide kit so we still have this. Would probably sell for something like $450 or even $400 complete US -- you are interested let me know and I can dig it up and take pics... In the end, the TurboGlide kit was almost identical turbo to this regardless...

I am wondering if I can find a link to that thread from about two years ago..

[Rig of Mortis]

Originally Posted by dieselcruiserhead

If anyone is in the market, we pieced together literally every part other than the high pressure oil fill line to the turbo for a 3B using the Mitsubishi diesel homebrew setup. Flip the stock manifold and it bolts up. Right as we got it all together, he got a big check/payday from work and ordered a Turbo Glide kit so we still have this. Would probably sell for something like $450 or even $400 complete US -- you are interested let me know and I can dig it up and take pics... In the end, the TurboGlide kit was almost identical turbo to this regardless...

I am wondering if I can find a link to that thread from about two years ago..

Great offer.
You should mention that the power steering reservoir would be in the way of a straight flipped stock manifold from models from 1983 onwards, at least on a bj60.

[MOTERRA]

let's see these pics of what you got for sale...and yes the power steering res. must be moved if you do a manifold flip...

[MOTERRA]

my friend is going to build me a manifold/header for mine he's got the big miller welder. he thinks it will be an easy fun manifold for him to build....

a straight up flip of the early 3b manifold is not practical for mounting and that setup is too high to fit under the hood(bj60).... and a hole in the hood is only cool if it's an off road beater and you have a tractor flap exhaust stack out the hood

[lowenbrau]

Originally Posted by MOTERRA

my friend is going to build me a manifold/header for mine he's got the big miller welder. he thinks it will be an easy fun manifold for him to build....

a straight up flip of the early 3b manifold is not practical for mounting and that setup is too high to fit under the hood.... and only cool if it's a off road beater and you have a tractor flap exhaust stack out the hood

It fits just fine under the hood of a 40 series but I agree that that running the exhaust straight up would be cool.

[guistou]

Here's my setup stock flipped manifold and kkk14 turbo



Final result:





I'm planning to change my turbo by a bigger one, garrett T3 from volvo 740td




Cheers from France

[MOTERRA]

I guess on a bj40 it fits pretty good

[cruiser_guy]

And I thought that the AXT kit made putting oil in the engine a bit of a pain! It looks like you need to pull the cross over pipe just to add oil.

[ohrly?]

oh dude, i know a guy in cr who can make up a custom turbo set-up for u, much... much much, much much, much, cheaper than a kit,

and rock solid.

[cruiser_guy]

Does anyone have close up photos of the exhaust coming off the turbo? The CT26 form the Supra is a goofy rectagularish shape.

[lowenbrau]

Originally Posted by cruiser_guy

Does anyone have close up photos of the exhaust coming off the turbo? The CT26 form the Supra is a goofy rectagularish shape.

Sounds more like the ct26 from MR2. The Supra one I stole the exhaust elbow for Ratpuke BJ42 was 2.5" round.