BBK-3B - my new favorite turbo
 

What's not to love about a turbo that makes 33 psi by 3800 rpm while making 530 whp at 7200 rpm on a 2.0L motor? In a kill-mode to kill-mode comparison, it kicked my HTA Green's butt everywhere, and it did it with a more restrictive intake than what I used with my HTA Green. The first plot is a comparison between my HTA Green and the BBK-3B for similar air temperatures. The second plot is the data log for the BBK-3B run. Peak exhaust manifold pressure is just under 50 psi whereas for the Green, peak exhaust manifold pressures at the end of a run were closer to 55 psi. The last data log shows a run for tamer BBK-3B boost settings. At this boost level, its probably making the same power as the HTA Green but doing it a much lower exhaust manifold pressure.

Definitely my new favorite street turbo.

Red line = BBK-3B, Blue line = HTA Green
https://www.evolutionm.net/forums/at...hmentid=221415

BBK-3B datalog for the VD run
https://www.evolutionm.net/forums/at...hmentid=221416

Lower boost datalog for the BBK-3B
https://www.evolutionm.net/forums/at...hmentid=221417

That's awesome I was going to look into this turbo!

What gear are these runs in?

It says 3rd on the vdr.

Oops, yeah I missed that. Very interesting, seems to spool much faster then my jb green :)

This is the turbo. I'm done.

Are you using a 2.5 compressor housing?

Still going to dyno in April?

Interesting.

What do the VD logs show in smoothing 6?

I have the stock compressor housing (machined of course for the bigger wheel). It does not surge with my 2L motor, at least in the 3rd gear pulls I did yesterday.

Yep. Gotta get some real DJ numbers at English Racing. Plus, I'll have a new intake by that time. When I logged intake pipe pressure for a few runs yesterday, 4 psi of vacuum was being generated! Way too much vacuum. Its gotta at least be partially due to the intake, and its probably partially due to the fact that I'm still using a MAF.

It is a little peaky. I made 505 whp with my Green at English Racing, so here is a VD plot with smoothing = 3 and the Green calibrated to show 505 whp. Now the BBK-3B is showing a little less peak power.

https://www.evolutionm.net/forums/at...hmentid=221420

What actuator(HD, or stock IX)?

I could definitely use this on my life :D Great numbers

I guess you finally got it installed!
Nice. I think I am sticking with the 3B as well. Can't wait to se what it'll do on the 2.3.
I think the market will be getting bigger for this turbo seeing as how it is +$300 for a MHI housing for a new green then add on a custom O2 housing/Downpipe.....

Looks good!

Stock, but with the Help spring mod. One half eyelet of overlap. Exact same configuration (in fact the same WGA and spring) that I used with my Green and the BBK Full. It took much less WGDC to acheive the desired boost at the higher rpms than it took with the Green or Full.

I was trying to figure out how the hell your getting 18º of timing at redline.....then I figured out it was E85, at least that's what your sig states :)

Please don't tell me this is on 93 ")