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Old 01-26-2011, 08:50 AM   #1
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Default GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Saw this last night, thought it deserved some attention.

Quote:
Originally Posted by Full Race Geoff
That test compares the GT35R .82 a/r vs EFR 8374 .83 a/r - both singlescroll undivided T3. On paper, the GT35R is smaller with a 68mm turbine wheel and maxxes out around ~68lb/min whereas the larger EFR 8374 uses a 74mm turbine wheel and ~79lb/min compressor max flow. The interesting things to note are that the spool is very similar on the dyno, but on the street the owner of the car is amazed how much faster and smoother the 8374 transitions into boost. Also the 42mm internal wastegate has no difficulty controlling boost on a very high RPM and high-VE engine. The boost control is actually *better* than it was with the exernal wastegate and vent to atmosphere dumptube.

We may test a 7670 on this next for comparison. I expect it would have the same top end as the 35R, but much more low end. Ive been getting a lot of PM's asking us to test the 6262 and 6765 T3 .82
Quote:
This test compares the GT3582R .82 a/r (Purple line) vs EFR 8374 .83 a/r (Green line) 91 octane pump gas @ 15 psi.

The main objective was to compare spoolup and powerband between the two turbos, while ensuring the 42mm Internal WG does not creep. Test car belongs to Jun Masculino (Ikon671 on clubRSX)is an RSX-S, powered by a built K20 . K20 engines are notorious for uncontrollable boost, so in this case it's incredible to see the EFR controls boost *better* than the externally wastegated setup he previously used. High boost and race gas next week
Click the image to open in full size.
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Old 01-26-2011, 09:23 AM   #2
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Not too surprising considering how the EGR's backwall has a much more aggressive extended tip than even their earlier models. Interesting, nonetheless.
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Old 01-26-2011, 10:15 AM   #3
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

nice! i like
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Old 01-26-2011, 11:17 AM   #4
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

very cool thanks for sharing
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Old 01-26-2011, 11:32 AM   #5
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

When are these efr turbos going to be available to Joe public?
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Old 01-26-2011, 12:39 PM   #6
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

^I'm wondering the same thing..... something told me to ****** and grab at sema lol
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Old 01-26-2011, 07:42 PM   #7
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Very interesting read
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Old 01-26-2011, 08:06 PM   #8
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

it suppose to be now in FEB....from geoff himself...im waiting for the 67mm inducer to be tested...suppose to be able of making 1000hp..and hold 40+ lbs of boost..
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Old 01-26-2011, 11:04 PM   #9
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Well what is the price of one of these compared to a 62/62 or 35r?
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Old 01-27-2011, 05:17 AM   #10
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by .CUBISH. View Post
Well what is the price of one of these compared to a 62/62 or 35r?
Ah yes, but yet the most important question for H-Ters...
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Old 01-27-2011, 09:31 AM   #11
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

I was told they are in the upper price range compared to the markets current offerings but for what you get it's worth the extra cost IMO.
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Old 01-27-2011, 09:44 AM   #12
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Way more then you can afford pal
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Old 01-27-2011, 10:59 AM   #13
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by LightningTeg View Post
Way more then you can afford pal
FERRARI.....
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Old 01-27-2011, 09:49 PM   #14
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by TheShodan View Post
FERRARI.....
SMOKE'UM
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Old 01-28-2011, 04:08 AM   #15
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Man you guys kill me! LOL. Took me a few times reading the last few post's to get it. Was this orchestrated? HAHAHAHAHAHA
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Old 01-28-2011, 05:59 AM   #16
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Very interesting, have been and still am very curious to see how these new efr line of turbos are going to test and stack up.

I am happy with my Precision 6265 right now but always glad to see other people stepping it up.

I notice the quote about how the 42mm integrated gate being better control for boost than the external... yet by the look of the boost plot the efr starts to creep in the upper most rpms? Also curious what externally wastegated setup was on it before, cause thats kinda generic and leaves alot of room for speculation. I mean are we talking 38mm gate or 44mm gate... on a full race manifold hopefully or something with a decent design... etc? It would be good to know for reference and make it a stronger comparison imo to state that information.

Good stuff and to Full-Race for their testing/ sharing results.
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Old 01-28-2011, 06:19 AM   #17
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by .CUBISH. View Post
Well what is the price of one of these compared to a 62/62 or 35r?
I was told a few hundred more than a 6768 ball bearing lol.... aka $2000+ honestly I would rather run the PTE Billet Journal stuff I could buy 2 6765's for the price of one 67mm efr

Not sure who performed the test, not pointing fingers but I have seen some test results from out west that made me think twice about the accuracy of them.
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Old 01-28-2011, 06:20 AM   #18
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by twkdCD595 View Post
I notice the quote about how the 42mm integrated gate being better control for boost than the external... yet by the look of the boost plot the efr starts to creep in the upper most rpms?
Looking at the green line (EFR), it seems to hold well at redline, where the red line (35R w/unknown external gate) creeped.

It looks like the divided turbines are going to be shipping in March. I'll be patiently waiting for results from an EFR-8374 with the divided 0.94 A/R turbine housing and twin internal gates on a 2.0L Honda.
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Old 01-28-2011, 01:04 PM   #19
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by .CUBISH. View Post
Well what is the price of one of these compared to a 62/62 or 35r?
About $1900-2100 for something comparable to a 6262/GTX35R.
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Old 01-28-2011, 01:20 PM   #20
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

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Looking at the green line (EFR), it seems to hold well at redline, where the red line (35R w/unknown external gate) creeped.

It looks like the divided turbines are going to be shipping in March. I'll be patiently waiting for results from an EFR-8374 with the divided 0.94 A/R turbine housing and twin internal gates on a 2.0L Honda.
OHHHH your right I had them reversed... I stand corrected.

Still would like to see them list what the external gate was and whatnot. Would make a nice complete mential picture of whats being compared to the EFR.
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Old 01-28-2011, 01:35 PM   #21
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

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I was told they are in the upper price range compared to the markets current offerings but for what you get it's worth the extra cost IMO.
I thought I read somewhere that these turbos were going to be in the 1800 dollar range?

It doesnt seem too bad if you do the math.

your typical ball bearing turbocharger from garrett or borg will run you 12-1300 dollars, add on the cost of a bov and a 44mm wastegate, and boost solenoid and you pretty much have the cost of this turbo.
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Old 01-28-2011, 10:05 PM   #22
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Impressive technology no doubt, but with the performance and price on the Precision billet stuff I don't see these being a big hit in the Honda community.

I made 825hp on a 62/65bb.. Which was around $800 cheaper
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Old 01-28-2011, 11:36 PM   #23
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

Quote:
Originally Posted by AlexDphoto View Post
I thought I read somewhere that these turbos were going to be in the 1800 dollar range?

It doesnt seem too bad if you do the math.

your typical ball bearing turbocharger from garrett or borg will run you 12-1300 dollars, add on the cost of a bov and a 44mm wastegate, and boost solenoid and you pretty much have the cost of this turbo.
Those are the factors that most people dont see. Being able to eliminate the BOV and wastegate can really make up for the difference in price. If you factor in IC piping thats not flanged for a BOV, you could save $50-100 additional. Then you consider the added performance you get with the responsive turbine wheel, and you have a major benefit.
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Old 01-29-2011, 12:59 AM   #24
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

not to mention the BW guys answered any and all questions I had, even the ridiculously technical ones and the sizing questions. They seem to be incredibly dedicated to their customers, something that really impressed me.

Not to bash Garrett but Borg Warner knocked it out of the park with this one.
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Old 01-29-2011, 04:12 AM   #25
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Default Re: GT3582R vs EFR-8374 - Undivided T3's - Back-to-Back Dyno K20

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About $1900-2100 for something comparable to a 6262/GTX35R.
I'm willing to bet they'll be more than that. Full-Race is pushing these hard already so I'd imagine a couple of Borg Warner EFR20s will pull a premium one week before race wars.
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