|
Forced Induction Turbo, Supercharger, Methanol, Nitrous |
|
Thread Tools | Search this Thread |
12-21-2018, 10:53 PM | #29 |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I know were interested in a real dyno sheet for the RS but in the meantime here is a buddies Dynapak Dyno sheet from Church Automotive in California for his stock compression motor with the RS and e85. He made 400 on it at about 7200rpm
https://ibb.co/GWf7pC1 |
12-21-2018, 11:01 PM | #30 |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I also talked to Delicious Tuning and they said that the small standard Jackson intercooler was mostly designed around the C30 and lower boost setups and that the c38 RS setups are showing some very noticeable heatsoak which is holding back the full potential. The guys at ATPTurbo think that based on the 74lb/min flow of the C38-81 at high boost it should be upgraded to the garrett core of 24 x 10.5 x 3 (600hp rated) or the 24 x 6 x 3 (400hp core) for best cooling and best efficiency for keeping pressure drop low as possible. Once I finish tuning here soon Ill see how the results look and go from there on more upgrades to the kit.
|
12-27-2018, 12:40 PM | #31 | |
Senior Member
|
Quote:
High Boost Pulley+E85 does about that same power on that same Dyno with a MT car. |
|
01-01-2019, 10:55 PM | #32 |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
02-06-2019, 06:40 AM | #33 |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
So the car is finished up. On a mustang dyno that I baselined stock at 153whp, I made 350whp on E85 at 15psi at 7450rpm with the RS Upgrade. This is in Texas in about 50 degree weather when tuned. Car made around 295whp on 93. Lots of timing pulled out obviously. Lots of people say this dyno reads low but with the 153whp baseline Id say its a pretty accurate reading. My motor is built but with stock CFM so no ported heads or cams. I dont think the RS will make 400 on anything but a Dynapak dyno. The car feels fantastic and the power is very impressive for a rotrex so the actual number is irrelevant to me at the end of the day. The extra torque coming on sooner is noticeable over the HBP. I understand all setups and environments are different but IDK where Jackson is seeing 17psi. Also Im not so sure a better intercooler would be worth it. Based on the temps we saw when tuning, theres a little to be desired in terms of cooling but I dont think the power gain would be worth the money spent. May be better to just use the C38-91 as it would just bolt right in and run more power that way. Either way, these were the results I saw with my 12.5:1 motor, E85, catless bolt ons, and the 90mm RS pulley.
|
02-09-2019, 08:02 PM | #34 | |
Senior Member
Join Date: Feb 2018
Drives: 16' BRZ
Location: California
Posts: 362
Thanks: 76
Thanked 161 Times in 91 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
02-11-2019, 06:39 AM | #35 | |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Do you remember your stock baseline numbers and then the numbers with the ~14psi HBP setup? |
|
The Following User Says Thank You to 86joe For This Useful Post: | CSG Mike (02-11-2019) |
02-11-2019, 01:01 PM | #36 | |
Senior Member
Join Date: Feb 2018
Drives: 16' BRZ
Location: California
Posts: 362
Thanks: 76
Thanked 161 Times in 91 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Quote:
I don't want to upset the Rotrex guys (I use to be one) but the reality is the C38-81 will not make 400-500 WHP on a non hub dyno like many people on this forum claim it will. Maybe with a different cam and higher than stock compression? The Rotrex feels great, makes cool sounds and mimics the stock power band in a very satisfying way. BUT if you are looking for BIG power it is not a good option even with the RS pulley on E85. Rotrex touts itself as being the most "efficient" blower can someone please explain this to me? To me that would mean having the most power gains per PSI of boost. Obviously it will not keep up with a turbo and I don't think anyone expects it to. But I promise you that a TVS 1320 with 15 PSI on E85 will make a noticeable amount more power without any dip in power at the top end and plenty of torque down low. The consensus on this forum that the Rotrex is best for track and the TVS is best for the street just doesn't make sense to me. To me the TVS is clearly the better choice for AutoX and I believe it will out perform the Rotrex on track as well. If you want a car that sounds cool, feels like you're boosted and keeps the stock powerband then go Rotrex. If you want torque and to feel like you have a strong V6 in the car with near silent operation go TVS. The Rotrex is the least likely to blow a stock motor but that's simply because it makes less power as you move away from the CARB setup compared to Edelbrock and Harrop. Last edited by GrabTheWheel; 02-11-2019 at 01:27 PM. |
|
02-11-2019, 07:14 PM | #37 | |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
02-11-2019, 07:21 PM | #38 |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Also, if I remember correctly (Id have to go back and look at dyno sheet) the RS made 10.5psi at 5000rpm.
|
02-11-2019, 11:03 PM | #39 | |
Senior Member
Join Date: Feb 2018
Drives: 16' BRZ
Location: California
Posts: 362
Thanks: 76
Thanked 161 Times in 91 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
Quote:
It's pretty hysterical to me that Rotrex advertise their blowers as "silent operation". They are super loud off throttle maybe not more so than any other centrifugal supercharger but I haven't noticed much of a difference. I hadn't heard about the C38R, looks pretty cool. On the plus side if you decide to sell and upgrade, the Jackson kits are easy to sell, they are also half the weight of the TVS kits. Not only a benefit on your car but also makes it easier when you go to ship it. I have kind of a love/hate relationship with centri's. I think if you could have a Rotrex large enough to make 1 bar of boost at 3500rpm and 30 psi at redline it would be perfect! I have an old comptech kit on my S2K and I enjoy it. My wife hates the sound. She likes the sound of V8's... |
|
02-12-2019, 07:15 AM | #40 | |
Member
Join Date: Oct 2016
Drives: 2013 Scion FRS
Location: Flower Mound, Texas
Posts: 17
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
The Following User Says Thank You to 86joe For This Useful Post: | GrabTheWheel (02-12-2019) |
01-09-2020, 03:22 AM | #41 |
Senior Member
Join Date: Dec 2012
Drives: Hot Lava 86 MT
Location: Dubai
Posts: 168
Thanks: 32
Thanked 56 Times in 36 Posts
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
|
Good morning to all. Just found this thread and it seems to be what I am looking for. I have a question and hope someone on here can help my out. I'm running a JRSC kit with a C38 SC and a RS pulley. Built engine with 10.0:1 compression and stock heads and cams (upgraded valve springs) and running on 98 pump gas.
My question is at 7500rpm I get only 0.81 bar of boost (11.7Psi). But I do not understand how that is possible. Where does the rest of the 5+ Psi go? What changes can I make to up the boost and power levels? (No, changing fuel is not possible since I can't get e85 here) Thanks
__________________
JR Supercharger, JR RS Pulley, JR Oil cooler, JDL UEL header, Dual resonated 3" JDL Overpipe Front pipe, Perrin 3" resonated cat back exhaust, Upgraded Koyorad radiator, ECUTek tune, Enkei RS05RR 18x9.5, Bridgestone RE003 265/35/18, KW V3 Coilovers, Valenti sequential taillights, Kartboy short shifter kit
|
01-09-2020, 01:27 PM | #42 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,530
Thanks: 8,918
Thanked 14,175 Times in 6,834 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
|
|
|
|
Tags |
c38, high boost, jrsc, pulley, supercharger |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Anyone of JRSC or Edelbrock? | tian105 | Mid-Atlantic | 11 | 10-02-2017 11:56 AM |
JRSC &a Delicious Tuning | VABeachBRZ | Forced Induction | 6 | 08-10-2017 04:44 PM |
Speed Academy EP5 - JRSC dyno (updated: EP6 - JRSC Track Test) | DarkSunrise | Scion FR-S / Toyota 86 GT86 General Forum | 17 | 03-30-2017 11:39 PM |
JRSC oil use | xsnapshot | Forced Induction | 3 | 03-27-2016 10:22 PM |
NEOPLOT Crank pulley Alternator pulley& Waterpump pulley | ANREX | Engine, Exhaust, Transmission | 10 | 10-25-2012 07:45 PM |