|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
12-14-2012, 04:09 PM | #1 |
Senior Member
Join Date: Oct 2012
Drives: BRZ DGM Limited
Location: USA
Posts: 1,237
Thanks: 5
Thanked 431 Times in 250 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
|
Help me understand the BRZ/FRS engine!
Have had a BRZ for 2 weeks and want to have a better understanding of this engine:
Other than the two injection systems and the boxer design, how is this engine new and different?? Also, I don't understand what the Cams do and why they keep throwing the CEL...can someone explain?? |
12-14-2012, 04:20 PM | #2 |
Senior Member
Join Date: Jun 2012
Drives: 2013 Asphalt FR-S
Location: Bloomington, MN
Posts: 1,156
Thanks: 499
Thanked 447 Times in 294 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
|
Besides the duel injection, and high compression, and low center of gravity, there is nothing really new and advanced about this engine.
Cams have lobes on them, which are driven by a chain or belt (chain in this engine) connected to the crankshaft. The lobes push down onto the intake and exhaust valves which allows air and fuel in, and exhaust out. Our particular cams have variable timing. Meaning, the computer can adjust the timing on when they valves are opened for performance and efficiency reasons. They are controlled by oil pressure. Some cars have an oil pressure issue, or the varriable system gets stuck causeing the engine to run poorly and thus throwing a CEL. Again, this is just as simple as I can explain it. But here is a video of cams working if that helps... [ame="http://www.youtube.com/watch?v=ry2nP7I315M"]Variable CAM Timing - YouTube[/ame]
__________________
Asphalt FR-S: EcuTek Visconti STG2 tune, MAPerformance turbo kit, MAPerformance 3" exhaust, Hotchkis springs, Mach-V 17x9 Awesomes.
Build thread: http://www.ft86club.com/forums/showthread.php?t=30703 |
The Following User Says Thank You to Opposed For This Useful Post: | ToxicSneakers (12-14-2012) |
12-14-2012, 05:38 PM | #3 |
Senior Member
Join Date: Jun 2012
Drives: 2013 Subaru BRZ Limited
Location: MA
Posts: 2,974
Thanks: 972
Thanked 1,552 Times in 843 Posts
Mentioned: 164 Post(s)
Tagged: 0 Thread(s)
|
Well the technologies used in the engine parts allow it to handle more power than a run of the mill motor. You should look at the crawford tear down.
|
12-14-2012, 06:25 PM | #4 |
Senior Member
Join Date: Oct 2012
Drives: BRZ DGM Limited
Location: USA
Posts: 1,237
Thanks: 5
Thanked 431 Times in 250 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
|
Good stuff..thanks. Since the oil control CAM system in the BRZ/FRS is nothing new, wonder why there are having issue with it??
|
12-14-2012, 06:31 PM | #5 |
The Answer
Join Date: Sep 2012
Drives: Mazda 2
Location: Moncton, NB
Posts: 1,233
Thanks: 488
Thanked 661 Times in 315 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
I think most of these issues were before the new ecu reflash/computer problem. Dealers were just replacing whatever was related to the CEL codes at that time..someone correct me if I'm wrong.
__________________
|
12-14-2012, 06:38 PM | #6 |
Banned
Join Date: Jan 2012
Drives: Attitude
Location: MD
Posts: 10,046
Thanks: 884
Thanked 4,889 Times in 2,902 Posts
Mentioned: 123 Post(s)
Tagged: 4 Thread(s)
|
A TSB came out to replace cam gears and associated parts...it was quickly pulled for many reasons. One of those reasons was probably because dealers were popping engines due to improper installation.
|
12-14-2012, 08:39 PM | #7 | |
Senior Member
Join Date: Oct 2012
Drives: BRZ DGM Limited
Location: USA
Posts: 1,237
Thanks: 5
Thanked 431 Times in 250 Posts
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
|
Quote:
Also wonder if the oil cam system could be change to the third type shown in the video above that is all electric if the ECU change does not fix the issue. |
|
|
|
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FINALLY engine is broken in...engine/tranny smell? | denverizzles | Engine, Exhaust, Transmission | 18 | 09-15-2013 08:12 PM |
I didn't like the AT and I'm trying to understand why | fiveoneoh | BRZ First-Gen (2012+) -- General Topics | 97 | 06-11-2013 01:34 PM |
I Think I Finally Understand How People Crash | 636 | Scion FR-S / Toyota 86 GT86 General Forum | 103 | 05-27-2013 11:36 PM |
What I just don't understand... | Liquidcell | Scion FR-S / Toyota 86 GT86 General Forum | 35 | 08-30-2012 08:38 AM |
Engine sputtering while idling with check engine light flashing, WTF | speedy racer | Scion FR-S / Toyota 86 GT86 General Forum | 15 | 08-27-2012 06:50 AM |