By chance is anyone running a larger turbo with the C3.2? The reason I ask is that I've noticed that when I tow heavy if I hit a grade that requires me to hold it to the floor to maintain speed and the rpm's are below say, 2400, my egts sit right at 1125* with 26 lbs of boost and never move. But at the higher rpm's the egt's climb fast. To me that says not enough high rpm airflow due to the tiny exhaust housing on the turbo and not just the fact that it's duration without timing. I've noticed the same thing just hot rodding around without the trailer. If I just use the monster low end torque and stay away from the 2500 rpm+ range egt's never pass 1150*. Doesn't that scream bigger turbo?

-Richard

 

I want a KSB-1-2...justing waiting for some cash.

 

Funny you should mention that. I've been e-mailing Mark at Piers about the KSB-1-2-03 trying to get more info. $1600 US non-wastegated and $1800 US wastegated but he said that thier 6 weeks out. If these are the same as the Aurora S2000 or S3000, thier seems to be a 6 week lead time from both dealers.

 

I guess we would need the wastegated version...to keep boost in the sub 50 range...lot of cash.

 

Just heard back from Piers and the KSB-1-2-03 is an S300 modded to be a bolt in replacement for the 3rd gens. If I remember correctly it should be good for about 450 HP. Ak Ram can correct me if I'm off on the HP estimate...


Ak, you out there...


-Richard

 

Morn'n

That makes sense. I don't know anyone personally that is running a KSB-1-2 so I don't have any first-hand knowledge. There are folks that run more power than that on race day, but from what I remember from my last conversation with Piers, about 425 to 450hp max is the cap on what the KSB-1-2 can cool efficiently. Any higher than that and they recommend an HX40 because you will get mucho hot.

Interesting comparison:

ATS Aurora 3000: Over 450hp and up
BD S300 Air Werks: 450hp max
KSB-1-2-03: 450hp max

All supposedly the same S300, slightly modded.

 

Unless ATS has changed their song recently (if so please share), the Aurora 2000 is not a S300. It is based on the S200. Modifications withstanding, there is a rather significant horsepower rating difference between these two base models at Borg-Warner. Just something to think about.

 

Would it be safe to say that the ATS would noot spool as quickley then since it can handle more power? What can you conclude from those numbers?

 

Safe. It only handles more power because of larger housings on both ends. Anytime you add larger housings to push more top end air, your spool-up will suffer. I would imagine it would be an awesome turbo for trucks with enough horsepower to spool it quickly, but you would absolutely hate it if you tow a lot. ATS recently took the 3000 off of their tow truck and is now running an Aurora 2000 on it. Not good for towing.

 

AK,

How is your Piers G1 holding up to your TST? What levels are you able to use?
I am trying to find a turbo to use with my VA CP3.2 and future pressure stack (timing to if I am lucky). I guess I will be in the 400 hp range...maybe a shade more. So far it seems like (Push Rod and Piers feel that) the KSB-1-2 is the way to go.

 

cquestad talking about stacking you should seriuosly consider the Quad when it comes out ,it WILL have TIMING and PRESS , just the thing for your VA . I was going to get the VA CP3.2 also but couldn't get over the fact that you can't really use the 100%

 

Remember the strange howl that I posted about noticing upon initial install of the G1? Not only is it still there, but it has gotten much louder. Not to be confused with cavitation, which is a separate issue. There is definitely something going on inside. Other than that, good. Mark @ PDR recommended a max of 4/4 on the TST with this turbo. After much thrashing at 6/6, it is still alive. I have grown weary of it as the howl has gotten louder, wondering if the TST has contributed to whatever is going on inside. Each time I spin it up I wonder if it will be it's last, so I tend to take it easy on it these days. Don't know what is causing the howl, but if that weren't there, it would be all thumbs up. It has proven to be tough.

After I replace it I may see if I can get Piers to take a look at it to figure out this howl. I'd like to get it fixed so I can offer it up for someone else here to play with.

So far it seems like (Push Rod and Piers feel that) the KSB-1-2 is the way to go.
....and in a way, they are right. These are two of the best diesel performance shops we have and people really take to heart what they say. They know this, and will never recommend a product that they have not tested to death and know 100% what its limitations are. That doesn't mean that the other turbos out there are not any good. You have to ask what other turbos they have experience with and do your own research on the ones they are unfamiliar with. Of course they are not going to recommend a turbo that they haven't or can't run to death. The new offerings from ATS and BD for instance may just run circles around the KSB-1-2 in some areas, but no one knows. Unfortunately, without a recommendation from people like Rod, most will shy away from these offerings so it will be a while before we have a good picture of how they perform. Don't forget the BB turbos scheduled for release in September. One from DD and one from Laredo. These will no doubt run circles around the KSB-1-2 for many applications.

 

On another note BD here is what BD told me regarding their offering...

"The standard S3000 does have the 3.5" outlet. We are using a modified housing that we have engineered. This has the 4" outlet. The standard S2000 or 3000 are not enough turbo for what you are looking for. We have a modified housing with an extended tip compressor wheel. This allows it to spool like a small turbo, then flow like a bigger one."

From this I'm assuming that the KSB-1-2-03 would have a 3.5" outlet. Would this make a difference on a mild truck like mine or a truck with just mild injectors? I would prefer the Piers version so that I don't lose my Jacobs. I asked if I could get just the BD inline vacuum exhaust brake housing without the rest of thier controls and use my Jacobs pump and controls. As usual, all I got was a little double talk and the "Buy our whole brake assembly" pitch.

Any comments on the "supposedly" smaller outlet of the KSB-1-2-03?

 

I hope it is not 3.5"! I would like my Banks DP to bolt right up...

 

Anyone with a KSB-1-2-03 want to help us out here? I'm really curious as well.