I believe the other bbk-b dyno graph shows an overlay with the previous tomei arms setup...with an increase of about 70whp over that turbo. the tomei turbo has been shown to be not so great, but i would still bet it makes more power than an 8 turbo. I would worry more about having enough injector to support the bbk-b. a stock intercooler might be holding u back a bit also at that power level

 

good point about the Tomei vs. stock VIII turbo. Yes i've been thinking about my exisiting Walbro setup and RC1000cc's and wondering if an upgrade is needed going from stock turbo to BBK-B and staying with E-85. i do believe a few of GST's customer Evo VIIIs (with BBK full and on E-85) are doing 400+whp with single walbro and 1000cc or larger injectors. Also definitely going with a 3.5" FMIC.

 

im pretty sure chad maxed out a set of 1000cc injectors with the bbk-b on pump gas so if you are trying to run big numbers on e-85 you will need bigger injectors and possibly a double pumper.

i think you could definately reach 400 with e85 and a bbk full, i was able to do so on 93 pump gas. best all around turbo in my mind.

jeff

 

Post up a link please!

 

A BBK-B isn't big enough to max out a single pump or 1000 cc/min injectors on pump gas. The issue had to have been fuel pump. For sure though, 1200+ cc/min injectors and a double pumper will be needed for a BBK-B in kill mode with E85.

 

taken from page 3 of this thread!!

jeff

 

A single Walbro with 1000 cc/min injectors and E85 is good for 400 whp on the GST Mustang Dyno. I can't see how an extra 60 whp but with pump gas is going to max out that combination of injector and fuel pump.

 

Not at a peak pwr AFR, but maybe trying to maintain 11.4 AFR. Could be something else without knowing fuel pressure

 

The particular pump in Chads test may have been going south and not delivering enough volume. I agree with mrfred, that a healthy , single WALBRO and 1000's should have plenty of headroom leftover on a BBK-B on a pumpgas tune. This combo would be sufficient on a pumpgas Red which supposedly flows the same air through its compressor as the BBK-B.

 

Thanks for the reference Atkins. Do you happen to know what boost level and AFR's the car in question was running?

EDIT: I read on another thread that on a BBK-B equipped car at about 30#, albeit with rich AFR's, on a pumpgas tune at 460 WHP on CBRD's Mustang dyno they were maxing out a single WALBRO. So, I don't think that it is the 1000 cc injectors, but rather the pump that is going wimpy. Maybe they need to either hotwire the pump, or try a KenneBell Boost a Pump. This way they could avoid going to a double pumper maybe! Still that BBK-B is sure flowing a lot of air. Also, they are tring to keep the pump gas tune safely on the rich side.

 

We've had multiple customers do 430-460whp with a BBK Full on E85 on the Evo 8/9. For some comparison data, the BBX has been putting down around 430-450whp on E85 on the Evo 10 platform.

Normal for 91 pump has been around 340-370whp with one particulary well setup Evo 9 hitting 400whp on 91 oct at only 24.5psi

Had a BBK-B on the dyno last night but had some technical difficulties with the car, possible boost leak. Even with that, the turbo had no problem holding 29psi to 7500 rpm (even with a 2.3L) and putting down 500whp. This was the same car that put down 502whp on E85 with the Beta BBK-B. It will be back soon at full health.

For some comparison data on that car, with the normal BBK Full it put down 460whp on E85 with the 2.3L. So far the BBK-B is putting down 40whp+ over the BBK Full on that car. That car maxed out the single pump on E85 at around 475whp. For the 500whp it now has a BlaqOps progressive double pumper.



- Bryan

 

Good info, thank you sir. I was hoping for 450hp with the B on 91 octane, I think I may have set my goals a bit high...

 

Any chance i could be an independant tester. Turns out my issues have more then likely been the head of the car so I will be fixing the valves and keeping my tubular manifold. Head will be coming off soon and I don't want to do the same work twice.

 

Great info thanks for sharing Brian

 

Curious on a BBK-B, E85, built 2.3 engine combination. Anyone venture a guess at 32-35psi? 500+?