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05-19-2013, 10:39 AM | #376 |
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Vehicle:2005 wrx-jdm207 i went black... |
well im glad you are more knowledgable than me! I always love learning this stuff! The pump will get replaced either way with one of the big ones. if my vf37 lasts the summer of heavy autox then ill be happy. im running it to 25psi for a few thousand rpms to help me keep up with the ej25 engines in the same class. Thanks for the help!
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05-30-2013, 04:45 PM | #377 |
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Location: Mililani, Hawaii
Vehicle:2004 STI Gray |
Geoff will the new v-band housings fit the tial flanges?
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06-11-2013, 04:40 PM | #378 |
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Vehicle:00 too many turbos white |
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06-11-2013, 05:16 PM | #379 |
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Is this turbo ever coming out?
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06-11-2013, 05:24 PM | #380 |
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Vehicle:00 too many turbos white |
we have a few of the EFR's in stock right now, but the 7163 is still a month or so out
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06-12-2013, 02:24 AM | #381 |
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Whats the flow rating of the new 7163 thats set to come out in a month compared to the beta 7163 that the OP has? Also im guessing it will be slightly laggier too?
Sorry if this has already been posted but are the slim vband ewg housings out yet for these? and what will be the size choices for the single scroll ewg vband exhaust housings. |
06-12-2013, 03:27 AM | #382 |
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06-12-2013, 05:33 AM | #383 |
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Vehicle:2013 WRX White |
How does the power and spool compare to something like a Blouch Dom1.5xtr?
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06-12-2013, 08:15 AM | #384 | |
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Quote:
I will not settle for anything laggier then what I have and the prototype 7163 seems to spool as fast with more top end. But now they say the soon to be released unit will make a lot more power but as physics will dictate it will probable spool slower also |
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06-13-2013, 11:42 PM | #385 | ||||
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Vehicle:00 too many turbos white |
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06-14-2013, 12:13 AM | #386 |
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Join Date: Dec 2005
Location: Mililani, Hawaii
Vehicle:2004 STI Gray |
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06-16-2013, 05:03 PM | #387 | |
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Location: In the Mitten
Vehicle:2011 STi, E85 1.5xtr WRB, Show and a little GO |
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06-17-2013, 10:35 AM | #388 |
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06-17-2013, 10:57 AM | #389 |
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Vehicle:00 too many turbos white |
dont underestimate that 6258 and 6758! the 7163 will spool later than both of them due to the larger rotor's inertia ... if you dont need the extra topend or can benefit from the smaller rotors they are outstanding
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06-17-2013, 12:06 PM | #390 |
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are there any links for this on the web? this is still being tested correct? haha nm.
What does the 6258 compare to in size a 20g? Last edited by BroBroBroBroBro; 06-17-2013 at 12:09 PM. Reason: moron |
06-17-2013, 01:20 PM | #391 |
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Isnt the 7163 the only one with the special turbine wheel design "mixed flow" or whatever? it seems like the 7163 spools faster or just as fast as the 6758 from what iv seen from the OP dyno graph.
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06-17-2013, 03:33 PM | #392 |
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Vehicle:00 too many turbos white |
6258 spools faster than stock and makes more power, case in point: jager racing, 100% stock STI engine, EFR 6258: https://www.facebook.com/photo.php?f...type=1&theater
and last weekend, #1 overall event champs @ redline time attack: https://www.facebook.com/photo.php?f...type=1&theater correct the 7163 uses a mixed flow turbine wheel, but there is no way to get around the increased inertia of the larger rotor pair |
06-17-2013, 05:01 PM | #393 |
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06-17-2013, 05:09 PM | #394 |
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You guys see this dyno of a VF39 on E85 vs the 6258 on E85?
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06-17-2013, 05:23 PM | #395 |
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Indeed I did, that dyno looks killer. If the 6258 can do that, then 7163 should have a lot of people's attention.
I'd like to see an EFR6258 vs. GTX2867r comparo. Too bad they aren't flange compatible, that would be quite an interesting back to back. I don't keep up on RTA, but I imagine the street class will be the battleground for that comparison, as the inducers are both just under the 50mm limit in the rules. It also tells me I should have gone to the 6258 due to my fueling being topped out at ~420-430 dynojet VD on my 6758. What can I say but that the 6758 exceeded my expectations. Last edited by Concillian; 06-17-2013 at 05:29 PM. |
06-17-2013, 06:08 PM | #396 |
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[quote=Full-Race Geoff;40035077]6258 spools faster than stock and makes more power, case in point: jager racing, 100% stock STI engine, EFR 6258: https://www.facebook.com/photo.php?f...type=1&theater
and last weekend, #1 overall event champs @ redline time attack: https://www.facebook.com/photo.php?f...type=1&theater just saw this on my facebook feed thats wicked... |
06-17-2013, 06:26 PM | #397 |
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posted half a page up by Geoff himself! this is really a dilema for me. 6258 or 6758..... ej207 wants to be feed more air!!!
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06-18-2013, 10:55 AM | #398 |
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Vehicle:2006 WRX WRB |
The 1.8 in my miata loves the 6758 so far. Had to trouble shoot some things on the dyno so I never touched the boost control, running straight off the 6psi iwga it made like 250hp and 212 ftlbs (dynapac), It did creep to 10psi for peak power and taper off on the 6 psi iwga. You need to watch for v-band clamp orientation if you run the actuator I have because the tip of the shaft can hit the clamp bolt. I dont think you have the wastegate flow to be able to run the 6758 on an ej257 under 12 psi so even as low as it could go you'd still be touching 300hp on a dynojet. I'd run the 6758 on the 2 liter, there's pretty much no downside besides 50-100 rpm of spool.
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06-18-2013, 01:28 PM | #399 | |
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Quote:
IMO, I was pretty annoyed with low end on my EJ205, but with the 207 and shorter ratio transmission, the 6758 is plenty responsive and I have no issue with lag. even going slow in 2nd, the car is pretty responsive with the short gearing and spool of the 6758. If you have a 3.9 or 3.7 5MT and are highly annoyed by lag, then go 6258. JDM 6 speed or 04-05 USDM 6 speed or 4.11 or 4.44 5MT, then 6758, if not wait for the 7163. Short gearing makes up for a lot in terms of turbo responsiveness, so I try to look at the whole picture. |
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06-19-2013, 05:02 PM | #400 | |||
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After experiencing as many setups as I have (not just my own, but over 200 that I've tuned), I have to say that my choice would be the 6258 on a 2.0L. Add a v-band inlet, and its a no brainer. Match it with a 4.444 final, and you have a ripping street car. You aren't going to win any bench races, but it sure will be fun...Since the turbo appears to be on its way out on my car, I might be putting my money where my mouth is sooner than planned. 6758 or bigger on a 2.5... |
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