|
Forced Induction Turbo, Supercharger, Methanol, Nitrous |
|
Thread Tools | Search this Thread |
12-09-2019, 04:44 PM | #85 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,527
Thanks: 8,916
Thanked 14,174 Times in 6,833 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
|
|
The Following 2 Users Say Thank You to CSG Mike For This Useful Post: | bfrank1972 (12-09-2019), mrg666 (12-09-2019) |
12-09-2019, 11:34 PM | #86 |
Senior Member
Join Date: Nov 2016
Drives: 2017 BRZ
Location: USA
Posts: 655
Thanks: 326
Thanked 258 Times in 177 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
|
12-10-2019, 12:15 AM | #87 |
Senior Member
Join Date: Jun 2013
Drives: RX-7 / BRZ
Location: USA
Posts: 2,343
Thanks: 1,026
Thanked 2,501 Times in 1,081 Posts
Mentioned: 27 Post(s)
Tagged: 0 Thread(s)
|
A lot of it for oem's is how nicely and compact a roots blower sits nestled down in a V configured engine too...
__________________
//2013 World Rally Blue BRZ Limited FBM Turbo--gone
//2018 Crystal White Pearl BRZ Ts 2.2l Harrop Supercharged |
The Following User Says Thank You to Kiske For This Useful Post: | why? (12-11-2019) |
12-10-2019, 11:33 AM | #88 | |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,767
Thanks: 1,695
Thanked 1,035 Times in 684 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Where you put your money is your concern. I believe I can be smarter with my money. Can you argue with that? |
|
12-10-2019, 12:45 PM | #89 | |
Senior Member
Join Date: Jan 2018
Drives: 2017 toyota 86
Location: PNW
Posts: 2,131
Thanks: 336
Thanked 1,188 Times in 781 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Better yet a comparison of all units sold of every supercharger for this platform, failure rate of every supercharger, average number of mileage before failure, and impact/cost to fix the failure. and then you could weigh this and factor it against the performance of the supercharger for your own individual decision. Having this information would be the smartest way to make a decision on spending your money. |
|
12-10-2019, 12:52 PM | #90 | |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,767
Thanks: 1,695
Thanked 1,035 Times in 684 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
The Following User Says Thank You to mrg666 For This Useful Post: | why? (12-11-2019) |
12-10-2019, 01:11 PM | #91 |
Senior Member
Join Date: Jul 2013
Drives: 2013 FR-S Argento
Location: Westport,CT
Posts: 1,855
Thanks: 517
Thanked 1,039 Times in 616 Posts
Mentioned: 7 Post(s)
Tagged: 1 Thread(s)
|
Too many variables here - we're all using aftermarket kits for comparison, but even the best kits are no where near OEM levels of engineering and packaging (bay location, drive, lubrication, cooling, etc.) Turn key shops like Lingenfelter, Dinan etc. are better-ish for overall package completeness but it's really tough to make an apples to apples comparison. There may be also a supply thing going on, maybe Rotrex just can't supply large scale? (just a wild guess). Would be interesting to hear from an actual automotive engineer on this topic.
|
12-10-2019, 02:41 PM | #92 | |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,767
Thanks: 1,695
Thanked 1,035 Times in 684 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
Quote:
There are claims that we do not commonly agree. Many claim that Rotrex is unreliable. I agree that Rotrex is probably a more delicate and complicated design than PD blowers since it can operate without gears past 100,000 rpm that require tight tolerances. But this brings the efficiency advantage of Rotrex. And, there is no complete data to support this "unreliable" claim. My experience is just opposite and there is extensive track record as well. This "Roots is OEM choice" claim, I will just discount it as irrelevant since we are modifying an NA engine that was not designed for FI to begin with. My primary concern would be engine reliability than the reliability of supercharger. Rotrex is a safer application for our engines due to lower low-end torque. As a second priority, I would consider the supercharger reliability and Rotrex is a proven aftermarket product on many car brands. Honda had an OEM supercharger kit with Rotrex. Since PD blower applies a constant boost from low to top rpm, it is better to have lower top rpm power for engine reliability. Since Rotrex builds the boost linearly with rpm, it gives up some power at lower rpm but can provide more power at higher rpm. All I am saying is that the answer for that question in the first post is not as simple as calling Rotrex unreliable, Edelbrock very reliable. |
|
The Following 3 Users Say Thank You to mrg666 For This Useful Post: |
12-10-2019, 06:54 PM | #93 | ||||
Senior Member
Join Date: Nov 2016
Drives: 2017 BRZ
Location: USA
Posts: 655
Thanks: 326
Thanked 258 Times in 177 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Quote:
Quote:
Quote:
|
||||
The Following User Says Thank You to gtengr For This Useful Post: | 86TOYO2k17 (12-10-2019) |
12-10-2019, 09:11 PM | #94 |
Senior Member
Join Date: Jul 2014
Drives: 14 BSP Edelbrock BRZ
Location: Lon Gisland
Posts: 806
Thanks: 113
Thanked 450 Times in 256 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
This is incorrect. A PD blower does not apply constant boost. If you put 10 psi into this engine at 2000 rpm it would be dead quickly. The Eaton unit builds boost linearly.
|
The Following User Says Thank You to toast For This Useful Post: | gtengr (12-11-2019) |
12-11-2019, 04:41 AM | #95 |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,767
Thanks: 1,695
Thanked 1,035 Times in 684 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
I'm not sure where you got confused. Please read by yourself to figure out. Not interested in another back on forth.
|
12-11-2019, 08:55 AM | #96 |
Senior Member
Join Date: Jul 2014
Drives: 14 BSP Edelbrock BRZ
Location: Lon Gisland
Posts: 806
Thanks: 113
Thanked 450 Times in 256 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
The level of condescending douchebaggery you convey borders on amazing. I have no interest in a back and forth with someone of your exceptional level of armchair engineering, but in this case it is not necessary, you are simply wrong.
The Edelbrock provides a fixed volume of air per revolution, not boost. When running WOT that volume creates a pressure in the manifold that is proportional to rpm. My boost scales linearly with engine speed; at 2k I get about 2 psi of boost, by redline it is 11 psi. I can provide logs if necessary. |
The Following User Says Thank You to toast For This Useful Post: | gtengr (12-11-2019) |
12-11-2019, 08:57 AM | #97 |
The guy w/o an FRS or BRZ
Join Date: Sep 2019
Drives: '23 GR86 Premium 6MT Halo White
Location: Planet Erf
Posts: 446
Thanks: 276
Thanked 399 Times in 215 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
TorqAmp
|
12-11-2019, 10:04 AM | #98 | |
Senior Member
Join Date: Jan 2018
Drives: 2017 toyota 86
Location: PNW
Posts: 2,131
Thanks: 336
Thanked 1,188 Times in 781 Posts
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Edelbrock vs JRSC for track | Hades | Forced Induction | 21 | 02-21-2018 02:30 PM |
Anyone of JRSC or Edelbrock? | tian105 | Mid-Atlantic | 11 | 10-02-2017 11:56 AM |
Help me make a decision. Please! | HillCountryGuru | Electronics | Audio | NAV | Infotainment | 11 | 01-28-2013 11:07 AM |
How did you make the decision to buy an 86/brz? | Dazza | AUSTRALIA | 30 | 09-06-2012 07:33 AM |
How will you make your decision? | Jeris@CatoMoto | Scion FR-S / Toyota 86 GT86 General Forum | 34 | 11-30-2011 11:13 PM |