Single Turbo RX-7's Questions about all aspects of single turbo setups.

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Old 10-06-17, 10:14 PM
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OH 9180

Just finished this badboy up fullbridge, borgwarner 9180, haltech and running e85.
Tuning for 35-40lbs of boost
Attached Thumbnails 9180-20171006_174429.jpg   9180-img_20171006_224129_873.jpg   9180-20171006_175106.jpg   9180-20171006_174315.jpg  
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Old 10-07-17, 02:14 PM
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Post up some a dyno sheet..when do you expect full boost?
Old 10-08-17, 07:10 AM
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Originally Posted by mp5
Post up some a dyno sheet..when do you expect full boost?
will be breaking in motor next couple of weeks
Old 10-08-17, 09:08 PM
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Unreal setup! *Very interested* in tracking your results, power and drivability with this setup brotha
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Old 11-10-17, 07:58 AM
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Motor is broken in heading to dyno monday, stay tune for results
Old 11-13-17, 01:57 PM
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What 9180? IWG/EWG? And what size housing?

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Old 11-14-17, 01:45 AM
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Originally Posted by Skeese
What 9180? IWG/EWG? And what size housing?

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ewg's and 1.45 A/R
Old 11-14-17, 01:51 AM
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Did a little tuning ran out of fuel with 2000cc primary, 2000cc secondary and 2 walbro 450
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Old 11-14-17, 01:49 PM
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Nice numbers. We did 580 @ 20lbs with 93 octane on our shop car with that turbo. Need to find time to get it back on the dyno and turn up the boost.
Old 11-14-17, 02:05 PM
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Originally Posted by IRPerformance
Nice numbers. We did 580 @ 20lbs with 93 octane on our shop car with that turbo. Need to find time to get it back on the dyno and turn up the boost.
It has so much more in it looking forward to getting more fuel in it and turn up the boost more. Our goal is 800rwhp I think we can make it with more timing and fuel
Old 11-14-17, 05:13 PM
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We are shooting for 800+ as well.
Old 11-14-17, 07:17 PM
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I had a gt42 with a fullbridge and made 624 but it was so laggy, the response of this turbo is crazy
Old 11-14-17, 09:00 PM
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Originally Posted by zayrx7
ewg's and 1.45 A/R
Wish I was on that end, if I can find somebody to take my IWG that is what I'll be doing.

Originally Posted by IRPerformance
Nice numbers. We did 580 @ 20lbs with 93 octane on our shop car with that turbo. Need to find time to get it back on the dyno and turn up the boost.
You told me about that, half bridge right? I'm hoping to break 600 @ 20lbs with E85 on my semi-peripheral. I'll be happy if I break 700 with my housing, but I'd love to see somebody hit 800+ with this guy in any configuration.

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Old 11-15-17, 12:25 AM
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Originally Posted by Skeese
Wish I was on that end, if I can find somebody to take my IWG that is what I'll be doing.



You told me about that, half bridge right? I'm hoping to break 600 @ 20lbs with E85 on my semi-peripheral. I'll be happy if I break 700 with my housing, but I'd love to see somebody hit 800+ with this guy in any configuration.

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Here you go
https://www.rx7club.com/single-turbo...-runs-1118578/
Old 11-15-17, 07:31 AM
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Originally Posted by silentblu
Yeah I saw that but personally don't believe it. Was posted on Facebook by that Abel guy who in that post said something about "no durritos in this car". Plus the fuel system on that car purely isn't capable of doing that, in any sort of configuration. Maybe running a 16.0 at WOT

to each their own, but I think its bs and just another wad of the fake news social media hype sells tactic that that whole group employs

and nobody ever got confirmation from the tuner, who seemed to imply it was not a rotary. When I asked on another forum that was arguing about it, why abel couldn't say, he PM'd me pissed off I mentioned his name along with a bunch of obscenities and borderline threats. WTF...ok dude

that whole deal stinks. Crack 800 and you're #1 as far as I'm concerned

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Old 11-15-17, 11:04 AM
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Originally Posted by Skeese
Yeah I saw that but personally don't believe it. Was posted on Facebook by that Abel guy who in that post said something about "no durritos in this car". Plus the fuel system on that car purely isn't capable of doing that, in any sort of configuration. Maybe running a 16.0 at WOT

to each their own, but I think its bs and just another wad of the fake news social media hype sells tactic that that whole group employs

and nobody ever got confirmation from the tuner, who seemed to imply it was not a rotary. When I asked on another forum that was arguing about it, why abel couldn't say, he PM'd me pissed off I mentioned his name along with a bunch of obscenities and borderline threats. WTF...ok dude

that whole deal stinks. Crack 800 and you're #1 as far as I'm concerned

Skeese
I better get to work fast then
Old 11-15-17, 11:21 AM
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one thing we can agree on from this Borg Warner comp map is that the 9180 will not make more air than 95 pounds/minute.

traditional relationship between air and power is 1.92 CFM makes one rw rotary hp SAE. this works well for raceports and bridgeports. peripheral ported motors make more but of course in a very narrow RPM range.

running the numbers, 708 looks like tops on the 9180 non peripheral.

the SXE 69 has a small flow advantage top end V the 9180.



as you can see flow is available around 100 as the rpm line is not yet vertical. flow at 60% efficiency is good for 738. both turbos share very close if not matching compressor wheels and the difference is in the 3/8 inch larger diameter compressor housing that was designed 3 years later.
Old 11-15-17, 12:51 PM
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Originally Posted by Howard Coleman CPR
One thing we can agree on from this Borg Warner comp map is that the 9180 will not make more air than 95 pounds/minute.

traditional relationship between air and power is 1.92 CFM makes one rw rotary hp SAE. this works well for raceports and bridgeports. peripheral ported motors make more but of course in a very narrow RPM range.

running the numbers, 708 looks like tops on the 9180 non peripheral.

the SXE 69 has a small flow advantage top end V the 9180.

as you can see flow is available around 100 as the rpm line is not yet vertical. flow at 60% efficiency is good for 738. both turbos share very close if not matching compressor wheels and the difference is in the 3/8 inch larger diameter compressor housing that was designed 3 years later.
hey howard. Always appreciate your input

how does the peripheral affect the calculation exactly? I'm assuming this is a change to the 1.92 motor and if so what world it be?

also how does the housing size affect the compressor map and pressure ratio? Does it not shift the graph to the right? I believe BW has a chart online quantifying the change with each housing size, but I don't remember.

Skeese
Old 11-15-17, 03:30 PM
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both turbos share very close if not matching compressor wheels
I believe the S300SX-E has a larger 69mm compressor inducer and 91.44mm exducer compared to the EFR 9180 with its 67.7mm inducer with 91mm exducer.

also how does the housing size affect the compressor map and pressure ratio? Does it not shift the graph to the right? I believe BW has a chart online quantifying the change with each housing size, but I don't remember.
I believe the larger volute in a compressor housing simply increases the total mass flow the compressor can flow- so on the compressor map just the rpm lines would not converge as quickly. A larger compressor housing could however also provide more room for additional features such as an improved anti-surge slot to help shift the compressor map Left.

Note the S300SX-E has a broader compressor map than the EFR 9180 with both a better compressor surge line on the Left and more peak flow on the Right as well as broader efficiency islands in between.

An EFR version of the S300SX-E just seems like a no-brainer decision to me.
Maybe BW just has a bunch of 9180 compressor wheels to move since IndyCar made Honda go twin EFR 7163 like everyone else?
Old 11-17-17, 12:23 AM
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I look up the a/r the biggest for s300sx-e is 1.00 and the efr is 1.45 wouldn't the 300sx-e fall of on the top end.
Old 11-17-17, 03:36 AM
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Originally Posted by zayrx7
I look up the a/r the biggest for s300sx-e is 1.00 and the efr is 1.45 wouldn't the 300sx-e fall of on the top end.
For the 66SX-E and 69SX-E there are 1.10 T4 and 1.31 T4 options, along with the Tialsport V band housings - 1.02, 1.16, 1.30 A/R.
The 1.45 9180 housing still outflows all of these, although the 1.30 Tial won't be far behind.
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Old 12-03-17, 08:54 PM
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I assume you ran out of injector and not pump? Was considering this turbo with my next rx7 build. Elite Rotary RE intake with additional injectors.
Old 12-04-17, 08:55 AM
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Originally Posted by iceman4357
I assume you ran out of injector and not pump? Was considering this turbo with my next rx7 build. Elite Rotary RE intake with additional injectors.
Yes ran out of fuel
2000cc primary
2000cc secondary
2 walbro 450 pumps
E85 fuel

Last edited by zayrx7; 12-04-17 at 11:05 AM.




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