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06-13-2013, 05:06 PM | #301 |
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I think the engineering obstacle that this solves is the divider which is the hardest to fabricate and first to fail. It likely runs hotter than the outside walls, and eliminating welds that fail is a good thing. Last is that keeping the runners uniform is difficult.
Welding on a flange and keeping the air gap correct for thermal expansion shouldn't be too hard. Im pretty sure this is for 44 valve as 38 would be on the small side with the divider in place. Garret has a cast v-band version but without the gate. After seeing their merge collector and then seeing this one, I think it is a mistake on their part to not include the gate.
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06-13-2013, 05:14 PM | #302 |
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The question is whether garrets new t3 divided housings (just released) flow well enough for the gtx3582r, the largest t3 they have, on the top end. The old t3 housings showed poor flow on the exhaust side for the larger turbo. We have been forced to use crappy divided housings for years. I hope that these new t3 housings work out.
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06-13-2013, 05:59 PM | #303 |
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Awesome. It was so cool seeing this setup at WBM. Will totally consider this setup for the beast mode car...
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06-13-2013, 06:04 PM | #304 |
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I didn't think about the tooling costs associated to make that, and I'd rather weld something on myself for ~free than pay an extra 50 bucks for the weld to be done for me.
Nonetheless I'm really intrigued by these and Reid's comment about the topend. I'd love one of these on the low mount location with just a little less power up top for my sacrificial lamb. |
06-13-2013, 06:10 PM | #305 | |
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06-13-2013, 07:33 PM | #306 | |
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http://www.motoiq.com/magazine_artic...e46-build.aspx Bottom of the first page and top of the second. Considering Mike Essa just won his first ever Formula Drift competition, it seems to be working pretty well. This article says he's making 750whp: http://www.autoevolution.com/bmw-blo...deo-57394.html |
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06-14-2013, 07:45 AM | #307 | ||||||
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The transition if VERY smooth. This was one of the reasons for going this route. I couldn't stand to see another one of THESE pictures! Quote:
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06-14-2013, 08:42 AM | #308 |
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I am really loving this Low Mount setup. Just awesome. Have you guys given any thought to a rotated intake. Less intercooler piping. Also, kind of a dumb question but, any way you might design and make some high fowing UEL headers for the setup. Gotta have that rumble
I really like the horsepower numbers and spool time you have with the GTX3071r turbo. That is the turbo i would go with if I was going big turbo. GTX35r is to big for me and too expensive to build the car to that even higher HP number. Keep up the awesome work, you have a new subscriber. |
06-14-2013, 11:57 AM | #309 | |
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06-15-2013, 09:20 PM | #310 | |
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The initial setup was a short-runner manifold using an old T4 flanged, 1.06 A/R divided turbine housing: http://forums.evolutionm.net/evo-eng...xperiment.html The new setup is a long runner manifold for the new divided v-band housing in 1.01 A/R: http://forums.evolutionm.net/evo-eng...xperiment.html |
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06-17-2013, 12:30 AM | #311 |
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please make the cast piece in t4!
somehow that divided vband housing and adapter look super restrictive. Last edited by azn2nr; 06-17-2013 at 12:58 AM. |
06-17-2013, 08:10 AM | #312 |
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06-17-2013, 11:28 AM | #313 |
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06-18-2013, 01:51 AM | #314 |
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06-18-2013, 07:21 AM | #315 | |
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This not a monster power kit. It's made to make decent power, steetable power, essentially widen the 'traditional/rotated' area under the curve. |
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06-18-2013, 10:33 AM | #316 |
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06-18-2013, 12:35 PM | #317 |
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06-18-2013, 02:26 PM | #318 |
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fair enough. still looks super restrictive. the inlets if not divided look to be 2-2.5 inch in diamater which gives it an area likely smaller than even divided t3.
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06-18-2013, 07:56 PM | #319 |
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Put a black plastic intake on it and spool 700rpm faster!
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06-19-2013, 09:11 AM | #320 |
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p p p p plastic?
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06-19-2013, 11:06 AM | #321 |
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lol.
absolutely. I started this pull at 3k rpm which is at least 500rpm later than junior did. The spool is still better on yours, but if I started the pull sooner the difference would have been much much smaller. I did another build that was exactly the same with only one difference: the intake manifold. The other car was an STi while this graph is an 09 wrx with B25 heads (the longblock was literally identical). The STi spooled the turbo 700rpm later than the 09 wrx. I'm not saying that you'll surely gain another 700, but you WILL see a significant improvement with no power loss. I think the plastic intake with your header would be the perfect balance of flow in and out of these engines. Don't compare power numbers, this is on meth. I only posted this up for the spool characteristics. You can see how nearly straight up the boost curve is. From 0 to full boost in just over 1300 rpm. |
06-19-2013, 01:04 PM | #322 |
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With no other changes a black plastic manifold cannot give you 700rpms of spool difference. I like the black plastic manifolds a lot. They are a proven performer. But it isn't going to result in 700rpm spool difference by simply bolting that intake manifold on.
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06-19-2013, 01:05 PM | #323 |
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want a 2005 Legacy GT to build a prototype on
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06-19-2013, 01:32 PM | #324 | |
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Interesting data. What are your thoughts on why? I understand the thermal benefits of plastic, but the velocity of the air is so fast that I'd be VERY surprised if the thermal difference were even measurable. |
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06-19-2013, 01:59 PM | #325 |
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Does it have anything to do with temperature or is it the different shape and volume of the plastic intake?
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