10-26-2018, 02:27 PM | #1 | |
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SteamSpeed STX 78R Ball Bearing (Stage 2.5) Turbo
Does anyone have any experience with Steam turbos? I'm trying to figure out which direction to take my turbo upgrade and am considering all contenders including this Steam STX 78R, Pure Stg 2, and G-Power. I like the idea of a ball bearing CHRA for faster spool up. Can you get a ball bearing center housing upgrade on a PS2 or G-Power?
http://steamturbochargers.com/index....r-bmw-n55.html From their website: Quote:
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10-26-2018, 03:02 PM | #2 | |
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Info from Steam turbo blog post: https://blog.steamspeed.com/2018/03/...w-n55-install/
Quote:
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11-02-2018, 12:05 AM | #4 |
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stock turbo upgrade
https://www.revolutionturbo.com/
I talked to revolution turbo they quoted me at $1500 for a large turbine and compressor wheels.. 550whp. Close to PS2 with out porting the manifold. $3500 for a ball bearing turbo capable or 600 whp. Steam seems like a great deal from what i understand though its only a 500 RPM difference in spool. Last edited by Bombermon3; 11-02-2018 at 12:18 AM.. |
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11-04-2018, 02:00 PM | #6 |
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Hey, we just wanted to update this thread.
We finally got some dyno time for the N55 STX 78R (aka stage 2.5) on the 335i at CarbConn in Kirkland WA! This car has baselines going from FBO -> SteamSpeed Stage 1 -> SteamSpeed Stage 2.5 The tune still isn’t done, but, it is the current state of where we are at. There is still a problem with the knock pulling timing, so the timing and boost are set low for now. TL,DR: 456 WHP, and 518 ft*lbs with just 21 psi & 9 degrees of timing! Stage 2.5 Setup: – FBO 2011 BMW 335i manual – SteamSpeed STX 78R BB Turbo – Single port meth – Only 21 psi, 9 degrees of timing Result: – 456 whp, 518 ft*lbs torque Here is stage 2.5 vs SteamSpeed STX 67 (aka stage 1) VS Stage 1 Setup: – Stage 1 SteamSpeed STX 67 Turbo – Single port meth – 21 psi, 14 degrees of timing VS FBO: Stage 2.5 vs Stage 1 vs FBO: Stage 1 vs 2.5 turbos: EWG Version: We can do all versions of the N55 turbo. Here is one we did for a customer in the UK recently. |
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11-06-2018, 09:24 AM | #7 | |
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10-20-2019, 07:33 PM | #8 | ||
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10-25-2019, 02:48 AM | #9 |
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I would believe so, the stock turbofold is quite restrictive a 500whp of air flow as it was designed for spool and not for flowing tons and tons of air.
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10-25-2019, 07:55 AM | #10 |
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Turbos with ballbearing does not give power, it only helps spools and nothing else. Most of the turbers what I see is huge compressors wheels very beautiful and without any sense. I have tried different options in n55 and it is not necessary to put compressor wheels of truck... The last upgrade in my f87 full boost at 2600rpm 600nm |
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10-27-2019, 11:12 AM | #11 | |
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10-28-2019, 09:29 AM | #13 |
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04-30-2020, 02:16 PM | #15 |
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Even though these 2.5 turbos work great, 3D printing steel is expensive, so we couldn't find a viable pricepoint for these turbos. We pushed ahead and developed new turbine housings for the N55 instead. They are a little smaller, similar in size to a GTX3076R, but in our testing, I think most everyone will be pleased with the result. Using ethanol, it was hitting in the neighborhood of 550whp on 25 psi, while hitting peak boost in the mid 3K range.
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