Turbo Position (1 Viewer)

[cruiser_guy]

Just use the alternator oil feed line to feed the turbo and the alternator oil return line as the return for the turbo , just tee into both. Keep it simple , you do not need a dedicated oil resevoir,pump and cooler for your turbo system. You are making a super simple thing complicate by doing that.
If you plan on running 7 psi then an intercooler is not required , the intake charge temp will not be high enough to warrant the pumping loss associated with intercoolers plus the added expense and extra plumbing .
Daryl

I agree with all this but if I were to run an intercooler I'd get my wastegate signal from the intake manifold so that the intercooler loss would not show up as it would if the wastegate signal was left "as is". This way the turbo might actually produce 10 - 12 psi pre-intercooler but still deliver 7-8 psi (or whatever the wastegate is set to) to the intake manifold. This way you'd get the denser charge from the intercooler and still maintain boost pressure.

A separate oiling system would be a complete waste of time in my opinion as well as making a very simple setup complicated. My oil supply comes from the altenator/vacuum pump and returns to the oil pressure port. I've had NO problems in 100,000kM. I allow the turbo to cool (engine running) until my pyrometer reads less than 400F.

 

[wesintl]

Craig.. What is the bolt pattern on that manifold?

 

[tlcruiserman]

I new a guy in Tahoe area that had a Garrett T3 on his BJ42 and it seemed to have less power than the AXT, but possible if he was running 7lbs instead of tuned for 9psi that might be the case.

I agree the seperate oil system is over kill and more parts to break, I like the AXT setup running off of the sending unit and return back to the oil filter inlet. I also run an oil cooler on my BJ42 and it helps keep things cool

G'day,

Michael

 

[jzilla]

Lumpy I have the ct26 from an mr2 with the dual entry ports.
And it spools up great on my truck. Guess if i got the 13bt manifold i would have to make a different flange, no big deal i guess.
When i put the intercooler in it I did not notice difference in power loss, i noticed decreased temps which is why i wanted it, only cost me 100 bucks or so to buy and install.
And Wayne it could definitely use supports! Maybe he has some on there now.

 

[Island Moose]

My suggestion on the separate oiling system is just born out of a concern over 15w40 diesel oil not being the best oil for the turbo, especially once it's saturated with soot. But I'm willing to be convinced otherwise, and keeping it simple makes sense financially.

 

[cruiser_guy]

My suggestion on the separate oiling system is just born out of a concern over 15w40 diesel oil not being the best oil for the turbo, especially once it's saturated with soot. But I'm willing to be convinced otherwise, and keeping it simple makes sense financially.

Ideally you should use full synthetic but that gets expensive with oil changes are recommended intervals (and I'm not convinced that extended change intervals are a good idea). Full synthetic has a higher coking temperature than regular dyno oil. There is 15W-40 dyno oil that is approved by the manufacturers for turbo applications.

 

[BJ40 3B]

I Have both settings, flipped manifold on a B engine and original manifold with the flange welded to the center of the manifold on a 3B engine.
Both settings work great, but the welded flange makes a cleaner install.
Here are some pics.

 

[Diescipel]

BJ40 3B--

What turbos are you using in each build?

B

 

[BJ40 3B]

On the B engine i have a K16 and on the 3B it's a K24, both from KKK and both are intercooled.

 

[Diesel Dude]

Knew to this forum... THE FORUM ROCKS>> >>> The turbo information is good. I recently installed a Turbo on my BJ-42. It bolted right on to the manifold. No modification. The turbo came from an mid 80's Dodge D-50 diesel. I am boosting a safe 10 pounds and everything seems to run smoothly. This is a mitsubishi turbo however unlike the 2.2L mitsubishi gas turbos no coolant is required to be run through this turbo. A major bonus. With a diesel there is no need to run the coolant through the turbo so that is one less step to do the whole thing took about a day.

 

[tlcruiserman]

I would think if you are not running coolent than you really would want to run a tubo timer. All of these combinations work, however I have to wonder what the real efficiency is on these. Seems like the answer is efficient enough huh?

Michael

Knew to this forum... THE FORUM ROCKS>> >>> The turbo information is good. I recently installed a Turbo on my BJ-42. It bolted right on to the manifold. No modification. The turbo came from an mid 80's Dodge D-50 diesel. I am boosting a safe 10 pounds and everything seems to run smoothly. This is a mitsubishi turbo however unlike the 2.2L mitsubishi gas turbos no coolant is required to be run through this turbo. A major bonus. With a diesel there is no need to run the coolant through the turbo so that is one less step to do the whole thing took about a day.

 

[lumpy70]

I've been pondering this non-cooled turbo thing lately. Yes a turbo timer would be the best, but since trhe 3B has an oil cooler, won't the oil be the same temp as the coolant anyway?

Just a thought,
Craig.

 

[Diesel Dude]

It is very important to let your oil cool down the bearings in the turbo no matter what. I dont have a problem letting my vehicle idle for a few seconds after I have been working it hard. No cummins has a watercooled turbo and many people are running these turbos at 35 psi. I have seen coolant in a turbo'd engine which has obviously been boiled by the turbo and it is then less efficent in your engine. Water cooled turbos are only really used on gas engines where extreme temperatures are present at the turbo. The turbo timers sound like a good idea. You need to keep in mind that with or with out a water cooled turbo you must leave the vehicle idle for a few seconds before shut down.

 

[dieseldog]

Diesel Dude, have you got a picture of the turbo from the Dodge D-50? Would love to see it.

 

[Diesel Dude]

I have a picture but i dont have a clue how to post it, I would be glad to email it or if some one can tell me how to post it I will.

 

[Diescipel]

Hit "Post Reply", then type message, then scroll down to "manage attachments", proceed.

B

 

[Diesel Dude]

I tried that butit wont let me upload the image for some reason it is for sure the right formatt so I am cluless.

 

[crushers]

make sure the pics are small enough...

 

[wesintl]

pics need to be 800x800 or smaller and I think less than 90KB. If you want to send them to me I'll post em for you. wesw71@aol.com

 

[Diesel Dude]

I'll take some new pictures the ones I have are 5megapixel so they are much bigger than that.