Big Blue would you recommend a third gen turbo for a 12valve and if so which one?

TIA
Wayne

 

I'm looking into this too. I have access to an 06 turbo.
what did you do with the electronic waste gate controller? Just leave it on and let the wires dangle? Got any pics of the washers on the waste gate?

 

I just let the wires dangle. I would have removed the whole solenoid but I couldn't find a plug to fit that thread pattern. The small bung that feeds the wastegate line is totally unobstructed by the black solenoid, you just need the black solenoid to plug the hole. All 04.5-07 5.9 liter cummins came with the HE351cw turbo. This is the turbo you want. If you are looking at a turbo that does not have the solenoid or a hole from where it used to reside, don't buy it as it is not the right one.

There is a guy over on Competition Diesel that is trying out a HE351 on a 12valve. He has not yet completed the swap.

 

I don't have a picture of the shimmed wastegate, but can take one tomorrow and will post it up.

 

Have you blew any boots off yet?

I'm making my 01 a pulling truck and im gonna pull the Silver Bullet off of my 07 and put it on my 01. Im kinda worried about the boots blowing off because of the way you have to route the piping to the intercooler.

 

Here are some pics of the wastegate setup. There are shots of the washer shimmed wastegate actuator head, tubing, brass tee ball and spring adjustable controller, and general cold pipe routing.

I have not had one failure or boot blow off. I think the way the pipe is "S" routed makes it push itself together as it pressures up.

 

Last four pictures of the wastegate setup. A careful eye will notice the new bolt protruding from the shock tower. Yes, I finally bit the bullet and bought some Bilstein 5100's. Got tired of my kidneys hurting as I drove to work on these bumpy concrete Las Vegas freeways.

 

Best purchase you ever made, isn't it? Was for me at least...

 

You discharge nozzle on the silver bullet will be at a different position and wont have to snake the air tubing all over the place. Once you the pressure up things will start to leak. At 70psi, things move, leak and break more than at 40psi. The less fittings, hose connections you have in the system the better everything will work.

Blue, couldn't you rotate the compressor housing so the discharge nozzle is at the bottom and you could run a elbow of it then into your intercooler.

 

I could have rotated the compressor housing and made the discharge line up better but I would have had to rig up a different than stock wastegate actuator. Because the wastegate actuator mounts to the compressor housing, you have to rotate it and the exhaust housing together. You cannot change the orientation of the exhaust housing because it bolts to the manifold. You can, however, rotate the center section to allow the oil inlet and oil drain to run perfectly vertical.

Some guys choose to run a custom wastegate spring setup much like a J-Hook or build a custom spring and bolt setup like those created by MPI in Idaho. I looked at my limited options and felt more confident as a plumber than a metal fabricator. I also like that boost controls my wastegate and not drive pressure alone.

 

I also agree with Mike, 70psi out of a silver bullet will blow apart fittings that hold fine at 45 psi out of the HE351.

That said, 70 psi will blow apart/off the stock boots at the intercooler connections.

If I were to somehow have problems blowing off boots, I could always weld a bent washer on both sides of each connection and mechanically fasten each joint. That said, 6 months with zero issues makes me think this setup will go the distance!

 

Big Blue
Is there a big difference in 03-04 turbos to the 05-08 turbos. I ask because I have a friend that went to twins on his 03 and has the stock one laying around.

TIA
Wayne

 

Earlier in the thread BB24 said that the 03 turbo is HE341. It is smaller than the 04.5+ and is not worth messing around with.

 

Yea Im gonna try and use the pipe for all the worst bends and just use 2 boots. One for the turbo to the pipe and one for the pipe to the intercooler.

Im gonna have my Silver Bullet wastegated at 65 lbs. I heard that was about the limit of its efficiency range. Im gonna need all that air though, as im gonna run either mach 6 or 7 injectors in it.

 

Thats lots of air, you gonna spray the motor? If you are you might want to cut back the pressure on the wastegate. You have to watch you boost pressure and see how well it control the pressure. Should make some decent numbers.