Originally Posted by JKav
(Post 695017)
Hell, I can answer most of those. See answers in bold above.
Regarding the plastic cover, as a potential customer, I'd be concerned that the cover could melt or degrade and just be unreliable. It's also ugly. :facepalm: Thanks also for the authoritative answer regarding journal vs. ball bearing antilag resiliency. |
Originally Posted by Faeflora
(Post 695064)
Thank you very much, I appreciate that you took the time to answer my questions.
Regarding the plastic cover, as a potential customer, I'd be concerned that the cover could melt or degrade and just be unreliable. It's also ugly. :facepalm: Thanks also for the authoritative answer regarding journal vs. ball bearing antilag resiliency. |
Fwiw I think full race is making a metal replacement plate |
Originally Posted by Faeflora
(Post 695139)
Fwiw I think full race is making a metal replacement plate |
I for one am really excited about the new line coming out, with garret having gone Chinese, and BW starting to gain a significant market share for the non oem/aftermarket turbo market I think it just adds more to the pot.
I've used a few BW setups and can say i've been nothing but satisfied with their durability, and the results i've gotten out of them. The new EFR lineup should be awesome, they're adding a lot of features that the tuning community can really utilize and at the end of the day save US money on overall builds. |
I personally am hoping for better chinachargers. Power to the peoples! |
Updates on some dyno sheets this is a 6758 EFR (rated for 450 hp) on a Cobalt SS
http://sites.commercecreators.com/fo...z254sae508.jpg http://sites.commercecreators.com/fo...z254std515.jpg http://sites.commercecreators.com/fo...z254sae540.jpg Pretty freaking impressive, and that they're making so much more power than what they're rated for makes me wonder... |
Is that wheel or crank horsepower?
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Originally Posted by Nagase
(Post 702564)
Is that wheel or crank horsepower?
|
That they do. It being a mustang dyno makes it all the more impressive, actually. Mustang dynos usually don't give the highest numbers. Edit: This was a response to Import Al's post, which originally stated "Wheel HP. But it's a Mustang dyno, which typically score bigger #'s then Dynojets" He took that out and replaced it with Mustang = chassis dyno... which is true, but I've seen dyno shops that print out graphs to 'corrected' flywheel horsepower, so that doesn't really satisfy me without knowing more.
And that turbo is rated to 49 lbs/min of flow. That means it should make roughly ~490whp. This is still a little over, but it's not a 450hp max turbo. Even the low figures on Full Race's website rate it at 500hp. |
Keep in mind that Cobalt is running E85.
Still, looking promising. |
35psi? in a cobalt? for realz?
at 4200 rpm? |
Originally Posted by Nagase
(Post 702568)
That they do. It being a mustang dyno makes it all the more impressive, actually. Mustang dynos usually don't give the highest numbers. Edit: This was a response to Import Al's post, which originally stated "Wheel HP. But it's a Mustang dyno, which typically score bigger #'s then Dynojets" He took that out and replaced it with Mustang = chassis dyno... which is true, but I've seen dyno shops that print out graphs to 'corrected' flywheel horsepower, so that doesn't really satisfy me without knowing more.
And that turbo is rated to 49 lbs/min of flow. That means it should make roughly ~490whp. This is still a little over, but it's not a 450hp max turbo. Even the low figures on Full Race's website rate it at 500hp. EDIT: Even if it where rated at 490 whp it's still about 50 whp over the rating and it doesn't seem like the turbo is struggling. |
Originally Posted by JKav
(Post 702575)
Keep in mind that Cobalt is running E85.
Still, looking promising. |
Originally Posted by jtothawhat
(Post 702704)
What does that have to do with how the turbo is performing?
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I really think you're missing the point, you get horsepower ratings from the compressor map and how much air it can flow, IE lbs/min x 10 gets the horsepower rating. E85/Race Gas/Pump Gas who cares, the gas just allows for more/less timing and more/less boost. Doesn't change the rating on the turbo. Which is rated in the amount of air it can flow.
I have never seen a dyno sheet where E85 resulted in better response, however, I am sure you can advance timing more to result in better turbo response. Which is something that you can get away with, with E85. |
A dyno sheet measures the total package power, not whats the turbo flows or achieves.
Using the 49 x 10 is a crude and non-precise way that exists to guesstimate potential power output of the car. Its cool if you want a quick way of finding out ball park potential power a certain turbo is capable of or limited to. But you can't just say "oh this turbo is a 49lb so the car will make 490hp" e85 changes the game completely: spool is better, timing can be advanced through the roof, and boost can be skyrocketed. Can't say the result will be same as pump gas. |
49x10 isn't to show total power output it is to show the turbo is rated for 490 hp, obviously in this case it made 50 whp more.
Cliffs: turbo is rated at 490 hp Car made 540 whp which is 50 hp over what the turbo is rated. Non-precise or not that's how turbos are rated for power--how much air they can flow. Example, can you make 700 whp with a GT3076R? No, why because the turbo can not flow air at the level that is needed to achieve that power level. |
LOL. Please, tell us more about how the turbo engineer is wrong.
e: He told you that an E85 dyno chart will give an inflated picture of the performance of a turbo (which is true - E85 adds ~10% power, improves spool, etc.). You then proceeded to tell him that the E85 didn't matter because it doesnt affect the turbo. He never said it affected the turbo - it affects the dyno chart. If anyone missed the point, it's you. |
Well there's more to it, too, when it comes to maps. Brake specific air consumption (yes air) is better with E85 for the reasons stated. Generally the guideline of 10 hp per lb/min of comp flow assumes gasoline. For E85 this number rises. That's what Garrett uses anyway, and I assume B-W too.
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