That's what I did and I am more than happy I did. I can upgrade to the B down the road but right now I completely content with the FULL. As far as shooting for a specific WHP # and nothing else, maybe it's not what you want. But if you want a turbo that has much more output than the stock from 4000 RPM to rev limit, spool with more volume, and makes a happier engine (no backpressure reversion), then FULL all the way. My logged RPM slopes are steeper with the FULL at 21 PSI than the stock turbo at 29 PSI, and with stock boost solenoid/ecuflash I can keep boost at 27± 0.5 PSI all the way to 7300 RPM.

 

Gentlemen,

we are doing testing with the turbo and things are looking good, part of the hold up is having the proper oil lines produced in the volume we need, and with the right style fittings. I should have that resolved this week,

Right now our BBK Full price is 1740 shipped with porting...

The BBk-B (comes with a port) is looking like it will still be 1840.00 shipped with the oil line and uprgaded bearings.....

we are restructuring the pricing program for used cores... since we have the following scenarios:

Stock evo IX turbo converted to BBK-B
BBK lite compressor only converted to BBK-B
BBK full converted to BBK-B

thanks again for being patient.. we have a lot going on right now (evo X tial housing development among other things)... and our fabrication picking up more projects, so I'm trying to move forward without rushing ANYTHING.

As for the comment about us being "too honest" about the issues.... We like putting the information out there. It is better to address an issue head on and make people aware, than to have to reply to "rumors" of problems during development after the product is released.

Sincerely

CB

 

It is a little difficult to claim that they will have an upgraded oil line as a personal prediction when they publicly announced the same thing two days before your post, no?

Also, I assume that you are speaking in generalities, but you, in a BBKB thread, are saying these turbos do surge without the cover. People reading will now assume (and already have assumed) that you are speaking about the BBKB when in reality you have not tested the turbo yourself to see whether or not it surges, which by the way, it doesn't.

Don't mean to come off in a hostile manner, but you are making a bold claim.



I also can appreciate their transparency. I think that is the direction that we are heading as a whole. Some people are dissuaded to know that CBRD isn't a magic black box that pushes out perfect products. What they need to realize is that when you create and innovate, you will run into disruptions. Failure leads to success.

Think about it this way, if they came out with the same product in the end, would you rather have them get it right by chance the first time or would you rather have them understand why things need to be configured in a certain way?

 

cb

 

How about Lite converted to full?

 

I can almost taste it, getting close...its delicious! Jk, really looking forward to this turbo seeks as though it will have the top end similar to a red while only giving up a few hundred rpms of spool compared to the full. Only time will tell but this seems to be on track for the best overall pump gas turbo imo, we will see!

 

Well said Boltz !!!!!

 

to note, we have had no surge issues in testing, even on built 2.3 liters on high octane fuel at 30psi.

cb

 

Decisions decisions decisions... yeah I'm torn betweeen the Full and B... baaaah!!!

 

Bingo!!! well said.

 

Boltz.,
I'd like to see a video of a 4th gear pull started at 2k with the wastegate preloaded to hell running c16 @ 30+ psi. If you can do that without surging I would consider its safe to say that the turbo does not surge. I had that experience with my 64mm Red... which I would say is going to be similar to this turbocharger. I had surge issues in 5th gear getting into boost passing people on the freeway with my Red.

My comment was not to hate on CBRD... it was to state that IMO this BBK-B will be released with a new oil feed line and an anti-surge cover. I find it difficult to swallow that this turbo will not have surge issues, but I'm open to being proven wrong.

-Eric

 

I understand you didn't mean to bash CBRD, I was just thinking about all of the people on the forum that aren't as technically savvy and might be misled by it. I'm sure you understand.

As a beta tester I can tell you that it does not surge. My testing has including many 3rd/4th gear sweeps starting as low as 2k rpm. Also had a W/G line pop off and it hit over 30. I was only on it for a half second but it didn't surge that brief moment either. To avoid popping the stock motor I avoid WOT at low rpm in 5th so I cannot comment on that at the moment, also haven't been on the highway since testing.

Edit: I can't promise it won't surge ever for anyone, but it looks good so far!

 

I think your problem lies here "wastegate preloaded to hell" why the F would you preload the wastegate anymore than necessary to maintain the desired boost? That's a recipe for disaster on any turbo.

 

because I run a lot of boost. I ran 42psi on my Red. I run 30+ on the stock 9... and I'll be in the 30's again with the Green I just put on.

For fun... set your turbo up with 0 preload...and tune your boost curve... then add 2 turns... and then 2 more...and then 2 more... until you're at the end of the rope for pre-load adjustment. This keeps the wastegate puck firmly pressed against the housing preventing premature venting of turbine pressure.

Go read up on how springs work. They linearly open with increasing force applied.... they're not digital.

 

Good stuff, look forward to more info