|
Forced Induction Turbo, Supercharger, Methanol, Nitrous |
|
Thread Tools | Search this Thread |
04-29-2019, 06:04 PM | #29 |
Senior Member
Join Date: Oct 2012
Drives: 1996 ST204, Series 10 FR-S
Location: Calgary, Alberta
Posts: 249
Thanks: 88
Thanked 201 Times in 85 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
|
@CSG_Mike
I'm curious to know what happens if the unit is older than 3 years. Do you know what Rotrex offers to those owners? It's something I didn't look into with KW. |
04-29-2019, 06:14 PM | #30 |
Senior Member
Join Date: Oct 2012
Drives: 1996 ST204, Series 10 FR-S
Location: Calgary, Alberta
Posts: 249
Thanks: 88
Thanked 201 Times in 85 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
|
I finally got to replacing every bearing with NSK bearings which Rotrex also uses from the factory. Luckly, all but one of the bearings I purchased locally were made in Japan. Not sure if that makes any difference (likely not) but it's JDM yo.
Rotrex made all of the bearing bores a little big to make assembly easy I assume. Unfortunately, the bearings are not seated properly and slowly enlarging the bore as time goes on. I noticed that there was some signs of wear in very bearing bore but less severe compared to bearing #2 in the previous photos. I decided to use some Loctite 660 retention compound on all of the bearing outer races to prevent them from spinning. Hopefully this will be the last time I see the inside of this thing. Mated the two parts back together using Ultra Black RTV and red Loctite where needed. It feels good to have it back together |
The Following 3 Users Say Thank You to projek_01 For This Useful Post: |
04-30-2019, 11:52 AM | #31 | |
Member
Join Date: May 2017
Drives: frs
Location: mo
Posts: 77
Thanks: 2
Thanked 39 Times in 25 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
04-30-2019, 07:25 PM | #32 |
Junior Member
Join Date: Apr 2019
Drives: Ae86
Location: Australia
Posts: 2
Thanks: 0
Thanked 3 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Thank you for the write up, very good info.
Did you have much trouble pressing the drive unit back together? How did you press the compressor wheel on and off without snapping the shaft or damaging the drive unit? |
The Following User Says Thank You to Frantic For This Useful Post: | projek_01 (05-02-2019) |
04-30-2019, 07:26 PM | #33 |
Senior Member
Join Date: Mar 2017
Drives: 2017 Toyota 86
Location: Florida
Posts: 232
Thanks: 1,712
Thanked 117 Times in 73 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
|
So is the JRSC not a good long term option for FI? My understanding is that it’s been a very reliable kit for most people but it seems like it has some design flaws..
Sent from my iPhone using Tapatalk |
05-01-2019, 11:56 AM | #34 | ||
Senior Member
Join Date: Oct 2012
Drives: 1996 ST204, Series 10 FR-S
Location: Calgary, Alberta
Posts: 249
Thanks: 88
Thanked 201 Times in 85 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
|
Quote:
With heat, reassembly was a breeze. Heating both the "ring gear" and compressor assembly at 400F for 10min allowed them to be re-assembled with hand strength. Quote:
The hardened and therefore brittle sunshaft is probably the Achilles heal of the Rotrex blower. It wouldn't take much for Rotrex to improve it and I hope they have already done that. |
||
The Following 2 Users Say Thank You to projek_01 For This Useful Post: | HachiRokuX (05-01-2019), wparsons (05-03-2019) |
05-01-2019, 04:15 PM | #35 | |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,774
Thanks: 1,700
Thanked 1,044 Times in 688 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Rotrex offers them to buy a new unit. My C30 is still working just fine after 25K miles (2 years). A new C30 is $2200 and I would just order another unit when/if there is a problem after 3 years. Simple, right? Whatever you are trying to prove here, my experience is that Rotrex compressor is a good and reliable product. And by the way, I really doubt that compressor you are trying to fix will ever work or be reliable again. Thanks for the pictures though. |
|
The Following User Says Thank You to mrg666 For This Useful Post: | HachiRokuX (05-01-2019) |
05-01-2019, 05:47 PM | #36 |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
The JRSC is very reliable, both on the track and for street use.
|
The Following 3 Users Say Thank You to CSG Mike For This Useful Post: |
05-01-2019, 06:26 PM | #37 | |
Senior Member
Join Date: Oct 2012
Drives: 1996 ST204, Series 10 FR-S
Location: Calgary, Alberta
Posts: 249
Thanks: 88
Thanked 201 Times in 85 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
|
Wow, what makes you so sure that my unit will never work or be reliable again? Do you have a mechanical or engineering background to explain why it wouldn't?
I'm glad your unit is good and reliable. I'm not trying to prove anything. I have nothing to gain from showing the flaws in my Rotrex C30. I spent my hard earned money to buy this supercharger just like everyone else but mine was starting to fail. It's not like I'm trying to sell people turbo kits and steering them away from a Rotrex. Just like the FA20 engine, the Rotrex is a decent unit. Many people have put lots of miles and track time on it without a single issue. However, I'm just merely pointing out it's flaws and showing places where it can be improved in my opinion. This is equivalent to someone doing a FA20 teardown/rebuild from a spin bearing or thrown rod. I feel like some people are getting a little offended when I jab at some design flaws. The blower is fairly reliable for most people but we also can't ignore the fact that a fair amount of people have experienced failures with the KW AND JRSC (less often). We are lucky that our FA20 doesn't rev to the moon like the F20C or K20 in the Honda world. Type in Rotrex failure in a Honda forum and you will see what I mean. Either way, my opinion IS biased because I own a failed unit. I admit that for sure. As a retailer of the JRSC or owner of a working unit, you are entitled to your own opinion. Quote:
Last edited by projek_01; 05-01-2019 at 06:47 PM. |
|
The Following 2 Users Say Thank You to projek_01 For This Useful Post: | BigFatFlip (05-02-2019), toast (05-02-2019) |
05-01-2019, 07:32 PM | #38 | |
pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
Posts: 1,774
Thanks: 1,700
Thanked 1,044 Times in 688 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
That unit is sealed and not serviceable for a reason. Engineering tolerances get pretty tight to function reliably at 100K rpm. You have no idea about those tolerances and material specs. And, yes, I am an engineer and wise enough not to share credentials on public forums.
Thank you again for the teardown; that was interesting. But I don't take your design criticism too seriously. If you want to risk more of your "hard-earned" money by installing that unit again Sure that is my opinion and it is your car. Good luck. Quote:
|
|
05-01-2019, 09:39 PM | #39 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
In other words, the engine's RPM + gearing determines rotrex RPM, not just the engine RPM. |
|
The Following User Says Thank You to CSG Mike For This Useful Post: | wparsons (05-03-2019) |
05-01-2019, 10:26 PM | #40 | ||
Senior Member
Join Date: Oct 2012
Drives: 1996 ST204, Series 10 FR-S
Location: Calgary, Alberta
Posts: 249
Thanks: 88
Thanked 201 Times in 85 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Quote:
Either way, what's done is done and I am confident enough to run this blower. I will run some nylon filters on the hot side pipes before the intercooler for some added protection. Best of luck to me! No more arguing on my end - what's done is done. I wrote this thread to help people understand what is potentially happening inside their blowers. |
||
The Following 5 Users Say Thank You to projek_01 For This Useful Post: | CSG Mike (05-02-2019), new2subaru (05-01-2019), sroby (05-01-2019), toast (05-02-2019), wparsons (05-03-2019) |
05-02-2019, 07:32 AM | #41 |
Junior Member
Join Date: Apr 2019
Drives: Ae86
Location: Australia
Posts: 2
Thanks: 0
Thanked 3 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I hope the little rotrex goes for years to come.
Last edited by Frantic; 05-02-2019 at 08:21 AM. |
05-02-2019, 10:19 AM | #42 |
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)
|
Thanks for this thread projek_01. Always nice when someone tries to help out the community by showing what is going on inside a unit.
Here's hoping your unit outlasts the one belonging to the Simpsons character from upstate NY. |
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Shopping cars today, test drove an fr-s..my thoughts and I'd like more opinions plz. | maybebrz | BRZ First-Gen (2012+) -- General Topics | 55 | 11-04-2015 09:49 AM |
Thoughts on Kraftwerks C-Type Rotrex Supercharger | Piper606 | Scion FR-S / Toyota 86 GT86 General Forum | 5 | 07-31-2015 09:59 AM |
FS:CA Brand new never opened KW INOX V3 for sale | stiboost08 | Brakes, Suspension, Chassis | 6 | 07-31-2014 01:18 PM |
FS/FT: Apple tv! Brand new never opened! | Duthebarber | Miscellaneous | 0 | 10-07-2013 02:34 PM |
18x8 Drag DR 38 +35 Never opened | Tdooley | Wheels and Tires | 2 | 02-09-2013 11:42 PM |