|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
06-21-2019, 09:59 PM | #1 |
Senior Member
Join Date: Feb 2018
Drives: '14
Location: Midwest
Posts: 485
Thanks: 246
Thanked 99 Times in 76 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Confusion on RPM's and engine health
Hey guys, I was hoping that some of you guys could clear something up for me.
I have a auto transmission and have always been taught to drive the car smoothly and not go up in RPM's. I've noticed that I'm always at around 1.5k - 2k RPM range when i'm cruising in 6th gear at about 55mph. Is this stressing on the engine for me to be driving at such low RPM's? When is it a good idea to drive higher up in the RPM? I drive very conservatively and try to maintain 35+ mpg. I'll be installing a twin screw supercharger from Sprintex soon, and I know that supercharger likes to put down a lot of torque in the low-rpm range, from what I read. Does that mean i'll be doing more damage to my transmission and or engine if I'll be cruising at low RPM's in 6th gear with my SC? Thanks for reading. |
06-21-2019, 10:11 PM | #2 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,861
Thanks: 28,777
Thanked 31,796 Times in 16,418 Posts
Mentioned: 707 Post(s)
Tagged: 2 Thread(s)
|
If the AT has selected that engine speed, then it's OK for the car. If the rpms needed to be increased, the AT would be told to go into a lower gear.
I won't comment on the SC addition. humfrz |
06-21-2019, 10:51 PM | #3 |
Weight Weenie
Join Date: Aug 2015
Drives: 15 FR-S
Location: Canada
Posts: 2,584
Thanks: 5,007
Thanked 2,330 Times in 1,346 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
I don't use 6th gear...However using 6th won't hurt your engine.
|
The Following User Says Thank You to new2subaru For This Useful Post: | kev0 (06-21-2019) |
06-21-2019, 10:54 PM | #4 |
Senior Member
Join Date: Sep 2018
Drives: Halo 86, '19
Location: NY
Posts: 120
Thanks: 88
Thanked 95 Times in 48 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Generally speaking no, an AT will not harm itself nor an engine in mostly stock form (including general NA mods and the like.) Likewise CRUISING at low RPM generally does not hurt an engine, so long as it's within proper cruising RPM.
Although I'm concerned you make mention of driving conservatively (35mpg) and be taught to "not go up in RPMs." |
The Following User Says Thank You to OwlDance For This Useful Post: | kev0 (06-21-2019) |
06-21-2019, 11:04 PM | #5 | |
Senior Member
Join Date: Feb 2018
Drives: '14
Location: Midwest
Posts: 485
Thanks: 246
Thanked 99 Times in 76 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
Quote:
as far as your concerns go, I was taught to always drive as conservatively as possible to save on fuel. This means no launching, braking as little as possible, not adding too much throttle, etc. The not go RPM's part is what I kinda taught myself. I know higher RPM's means more stress on your engine, since its reving high and makes your car louder. I may be wrong, for all I know. I associate high RPMs with car going faster. Feel free to correct me, I am always willing to learn more. |
|
06-21-2019, 11:08 PM | #6 | |
Weight Weenie
Join Date: Aug 2015
Drives: 15 FR-S
Location: Canada
Posts: 2,584
Thanks: 5,007
Thanked 2,330 Times in 1,346 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Kev, this is a sports car. Have some fun with it! Posts like this make me die a bit inside. You will not hurt the engine by getting the revs up. |
|
The Following 6 Users Say Thank You to new2subaru For This Useful Post: | jeffchap (06-22-2019), JohnJuan (06-25-2019), kev0 (06-22-2019), soundman98 (06-21-2019), StraightOuttaCanadaEh (06-22-2019), Tristor (06-22-2019) |
06-21-2019, 11:37 PM | #7 |
Senior Member
Join Date: Aug 2018
Drives: 2002 VX Commodore SS LS1 Auto
Location: Sydney
Posts: 2,203
Thanks: 500
Thanked 2,185 Times in 1,111 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
|
LOL
I rev the crap out of my 86, once it is up to temp, always have, always will. I am also a firm beliver in the "hard break in".
__________________
Disclaimer: This post represents the official views of the voices in my head at the time of posting.
http://www.ft86club.com/forums/showthread.php?t=133311 I'm only here for the biscuits |
The Following 3 Users Say Thank You to 86MLR For This Useful Post: |
06-21-2019, 11:44 PM | #8 | |
Damn that's crazy...
Join Date: Oct 2018
Drives: 2015 BRZ
Location: Texas
Posts: 971
Thanks: 771
Thanked 772 Times in 467 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
How long have you had the car? I’d say definitely get comfortable with it in stock form and learn more about what you’re getting into with the supercharger. Once you get it, I’m sure MPG and low RPM will go right out the window lol They’re fun cars when pushed hard and I know the supercharger will make it that much more. Good luck! |
|
06-21-2019, 11:52 PM | #9 | |
ProCrastinationConsultant
Join Date: Sep 2013
Drives: '14 Ranger, '18 Tacoma 4Dr LB
Location: chicago-ish
Posts: 11,326
Thanks: 35,214
Thanked 13,661 Times in 6,778 Posts
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
|
Quote:
if i don't hit redline at least once every time the car comes out, a puppy dies. i don't like dead puppies.
__________________
"The time you enjoy wasting is not wasted time"
|
|
06-22-2019, 12:04 AM | #10 |
Senior Member
Join Date: Mar 2017
Drives: Q5 + BRZ + M796
Location: Santa Rosa, CA
Posts: 7,882
Thanks: 5,665
Thanked 5,802 Times in 3,297 Posts
Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
|
Why get a supercharger? Sounds like you aren’t using the power you have.
__________________
My Build | K24 Turbo Swap | *K24T BRZ SOLD*
|
The Following 4 Users Say Thank You to Irace86.2.0 For This Useful Post: |
06-22-2019, 12:07 AM | #11 | |
friendly
Join Date: Oct 2018
Drives: 17' 86
Location: Dutchess County, NY
Posts: 717
Thanks: 1,441
Thanked 465 Times in 283 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
|
Quote:
save dogs rev engines
__________________
Seek comfort in discomfort.
|
|
The Following 3 Users Say Thank You to alphasaur For This Useful Post: |
06-22-2019, 12:22 AM | #12 |
Senior Member
Join Date: Mar 2017
Drives: Q5 + BRZ + M796
Location: Santa Rosa, CA
Posts: 7,882
Thanks: 5,665
Thanked 5,802 Times in 3,297 Posts
Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
|
I beat the shit out of my car every time im in it. Probably even more when I had less power in terms of rpms.
__________________
My Build | K24 Turbo Swap | *K24T BRZ SOLD*
|
06-22-2019, 12:45 AM | #13 |
ProCrastinationConsultant
Join Date: Sep 2013
Drives: '14 Ranger, '18 Tacoma 4Dr LB
Location: chicago-ish
Posts: 11,326
Thanks: 35,214
Thanked 13,661 Times in 6,778 Posts
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
|
Beat it like it owes you last years rent, and then see if the supercharger is still needed.
Fyi, i still average 22mpg, which is incredible for me. My old v6 eclipse averaged 9mpg with my foot, and my ranger has a strict don't-ask-don't-tell policy. I'm happy if a full tank makes it a week.
__________________
"The time you enjoy wasting is not wasted time"
|
06-22-2019, 12:48 AM | #14 |
Senior Member
Join Date: Dec 2013
Drives: 2014 Scion FRS (Asphalt)
Location: Redmond, WA
Posts: 553
Thanks: 36
Thanked 171 Times in 141 Posts
Mentioned: 6 Post(s)
Tagged: 2 Thread(s)
|
The only way I see cruising in 6th at a low rpm being harmful is if you floor it and the gear doesn't drop down - like if you are in manual mode. That puts unnecessary stress on the rods, especially if you are boosted.
__________________
AVO Stage 2 Turbo Build Thread
https://wheelwell.com/tyler-nguyen-1...014-scion-fr-s |
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
New to Health Insurance | LOLS2K | Off-Topic Lounge [WARNING: NO POLITICS] | 30 | 12-18-2015 09:21 PM |
frs for energy and health | charged86 | FR-S & 86 Photos, Videos, Wallpapers, Gallery Forum | 4 | 08-30-2013 12:49 PM |
Owner's manual slight confusion about engine break in period... | davey90 | AUSTRALIA | 48 | 09-05-2012 09:51 PM |