Community Forums

CyberVet65 · 03-11-2009, 04:38 PM

I am having the darndest time getting an aftermarket turbo to fit up on my 5.9L Cummins. They can't seem to get the correct reducer (3.5inch to 4inch) to mount it. I am almost ready to tell them to forget it. Can the stock turbo be "rebuilt" with higher CFM and bigger/faster vanes on the wheel?
Chet

sjholt · 03-18-2009, 05:28 PM

Your turbo will put out more than 32# of boost and that should be all the boost you need considering that you will be 20#+ nearly all the time with that load.

However, There is a 3-1/2 to 4" rubber pipe fitting at Home depot that some guys on the diesel forums are using for the reducing the air input fitting if that is what you are talking about.

CyberVet65 · 03-18-2009, 07:09 PM

Thanks for the response. The reducer they need is on the exhaust side of the turbo. It is 3.5 at the turbo into a 4 inch exhaust.

RustyJC · 03-19-2009, 06:49 AM

Chet,

Have your shop get in touch with STAN'S HEADERS. They can supply just about any exhaust pieces you can imagine for the Cummins ISB, including flanges, adapters, etc.

Rusty

CyberVet65 · 03-19-2009, 04:52 PM

thanks for the referral

Mike Canter · 03-22-2009, 06:50 AM

Here is something to consider. http://bankspower.com/products/show/207/57
They are always a little high on prices but the do sometimes have some great specials to move products especially in hard times like now. I put both the Stinger and Power Pack Sytems on my B5.9 with the boost and EGT gauges. One recomendation I can make is DO NOT try changing that turbo housing yourself because it is rusted together and you can damage it taking or trying to take it and while putting it together. Most cities have places that rebuild truck turbo's and have the special equipment to do it. I know of a great one in Charlotte NC and one in Atlanta.

Also if you modify the turbo then I would highly recommend the EGT sensor and gauge. This is very important to know that things are running right with the fuel mixture after any mods. At wide open throttle under load like going up a nice hill that EGT should be right at 1300* F. Too high above 1330*F may damage your motor. To low below 1245* results in low power. A diesel is opposite to a gasoline motor and in a diesel the more fuel you pump into the motor the hotter the EGT will be.

If you go to http://bankspower.com/manuals you can download their manuals for the Stinger and Powerpack systems for your motor and see what I am talking about.

I got the Power Pack and Stinger System for $1800 total. It made all the difference in the World to by B5.9. Now when climbing steep hills my MH doesn't slow down and it hardly ever has to downshift. I just watch the boost gauge climb and it keeps going up the hill. To be real truthful I haven't seen all that gas milege gain that is talked about but that is probably just the way I drive it. I do get maybe a .5 MPG gain but that is climbing a lot of hills.

If you have any other questions about the Banks stuff then feel free to ask. The kits are complete with everything and are very well engineered and there is always somebody to answer any questions on the phone at Banks.