follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Tracking / Autocross / HPDE / Drifting

Tracking / Autocross / HPDE / Drifting What these cars were built for!


User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-09-2021, 11:11 AM   #1
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '23 BRZ
Location: Providence, RI
Posts: 4,577
Thanks: 1,373
Thanked 3,883 Times in 2,027 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
Mechanical overrev, 9k

Got 3rd instead of 5th at the track, saw 9k before clutching. Seemed to run ok after that for a few laps but then lost a ton of power. But only temporarily. Power cam back but dropped a lot again, as if ECU going into a limp mode. Sounds like some lifter noise at hot idle in pits.

Pondering:
Do I run 3lap TT? Just drive home 150 miles away, or have it flat towed to shop?
ZDan is offline   Reply With Quote
Old 05-09-2021, 11:48 AM   #2
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '23 BRZ
Location: Providence, RI
Posts: 4,577
Thanks: 1,373
Thanked 3,883 Times in 2,027 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
Just listened to friend's same year 86 sounds same lifter noise so mildly encouraged...

Lost power on extended hard left and power loss felt similar to fuel starvation I've had before, but have just under 3/4 tank so...
ZDan is offline   Reply With Quote
Old 05-09-2021, 12:02 PM   #3
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,118
Thanks: 18,090
Thanked 16,253 Times in 7,346 Posts
Mentioned: 106 Post(s)
Tagged: 0 Thread(s)
Garage
I've zinged mine about that hard before and it was okay. If it kissed a valve you'd know it, I don't see a lifter being an issue, they move almost nil.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is offline   Reply With Quote
Old 05-09-2021, 12:06 PM   #4
gen3v8
Barred
 
gen3v8's Avatar
 
Join Date: Oct 2020
Drives: My18 wrxsti My19 brzts
Location: Botany Bay
Posts: 1,139
Thanks: 726
Thanked 1,178 Times in 607 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
I loose power after long hard left! The car gets a massive pop tune sound. I`m not sure if it`s a traction control shutdown or fueling issue
__________________
Wait until my Flex capacitor hits 88
gen3v8 is offline   Reply With Quote
Old 05-09-2021, 12:09 PM   #5
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,118
Thanks: 18,090
Thanked 16,253 Times in 7,346 Posts
Mentioned: 106 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by gen3v8 View Post
I loose power after long hard left! The car gets a massive pop tune sound. I`m not sure if it`s a traction control shutdown or fueling issue
This helps a LOT.

https://www.verus-engineering.com/sh...e=2&category=1
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is offline   Reply With Quote
The Following User Says Thank You to NoHaveMSG For This Useful Post:
gen3v8 (05-09-2021)
Old 05-09-2021, 01:42 PM   #6
TommyW
Senior Member
 
TommyW's Avatar
 
Join Date: Feb 2017
Drives: '13 Whiteout
Location: San Clemente
Posts: 1,491
Thanks: 496
Thanked 1,242 Times in 673 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
If everything sounds normal I wouldn't worry about it. If you broke something you'd know.
TommyW is offline   Reply With Quote
Old 05-09-2021, 02:47 PM   #7
Cali Girl
Member
 
Cali Girl's Avatar
 
Join Date: Apr 2021
Drives: 86
Location: 831
Posts: 6
Thanks: 0
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by NoHaveMSG View Post



Thank you
Cali Girl is offline   Reply With Quote
Old 05-09-2021, 02:59 PM   #8
rice_classic
Senior Member
 
rice_classic's Avatar
 
Join Date: Jun 2012
Drives: Nevermorange FRS
Location: Seattle, WA
Posts: 4,160
Thanks: 755
Thanked 4,200 Times in 1,803 Posts
Mentioned: 77 Post(s)
Tagged: 1 Thread(s)
Rocker retainer may have come off which is typical on an over rev.

Some companies sell a revised rocker/retainer this not susceptible to this.
https://denstoj.com.au/products/fa20...r-retainer-kit
__________________
SCCA T4 - FRS
rice_classic is offline   Reply With Quote
Old 05-09-2021, 06:10 PM   #9
jflogerzi
Senior Member
 
jflogerzi's Avatar
 
Join Date: May 2012
Drives: 2013 Series 10 6MT FR-S
Location: Moreno Valley, CA
Posts: 5,520
Thanks: 1,998
Thanked 2,004 Times in 1,452 Posts
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Garage
I did a small money shift in the car this weekend in the AM. Car shrugged it off and I even managed to match my best AM time at 2:30 in the afternoon in 85-90f weather. Safe to say power seemed fine

If your going to do the fuel door flapper mod might as well replace the fuel pump while your in there.

As others said of she sounds fine then I would not worry.

Sent from my GM1915 using Tapatalk
__________________
2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
jflogerzi is offline   Reply With Quote
Old 05-09-2021, 09:12 PM   #10
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '23 BRZ
Location: Providence, RI
Posts: 4,577
Thanks: 1,373
Thanked 3,883 Times in 2,027 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
I don't think it's fuel starvation. I went ahead and fuelled up and ran my 3-lap time trial, no prob. I did slower times than 1st practice this AM by 1 second but mainly because I was too tentative and worried, my fastest lap I actually didn't do the 4-5 shift on the front straight, which cost me 0.3 sec. Car seemed to behave normally during TT. I got 2nd in TT to a Hoosier-shod Miata (dedicated track car) by less than a tenth, DOH!

In open-track after TT, the power-loss coming out of turn 6 (NHMS, long heavily cambered left hander) happened again, with a nearly full tank. Hmmm...

Was able to capture it in log files via ECUtek (which I'm a total newb to), gonna send .csv log files to tuner to get an idea what's happenin. Seems like VVT might not be VVTing, doesn't sound like anything BAD is happening, it just goes limp.

TL/DR, it's still happenin and it aint' fuel starvation (I don't think)
ZDan is offline   Reply With Quote
The Following User Says Thank You to ZDan For This Useful Post:
Ultramaroon (05-09-2021)
Old 05-09-2021, 09:22 PM   #11
jflogerzi
Senior Member
 
jflogerzi's Avatar
 
Join Date: May 2012
Drives: 2013 Series 10 6MT FR-S
Location: Moreno Valley, CA
Posts: 5,520
Thanks: 1,998
Thanked 2,004 Times in 1,452 Posts
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by ZDan View Post
I don't think it's fuel starvation. I went ahead and fuelled up and ran my 3-lap time trial, no prob. I did slower times than 1st practice this AM by 1 second but mainly because I was too tentative and worried, my fastest lap I actually didn't do the 4-5 shift on the front straight, which cost me 0.3 sec. Car seemed to behave normally during TT. I got 2nd in TT to a Hoosier-shod Miata (dedicated track car) by less than a tenth, DOH!

In open-track after TT, the power-loss coming out of turn 6 (NHMS, long heavily cambered left hander) happened again, with a nearly full tank. Hmmm...

Was able to capture it in log files via ECUtek (which I'm a total newb to), gonna send .csv log files to tuner to get an idea what's happenin. Seems like VVT might not be VVTing, doesn't sound like anything BAD is happening, it just goes limp.

TL/DR, it's still happenin and it aint' fuel starvation (I don't think)
So it throws a code and goes into limp? If you were in limp you would be stuck below 4000 rpm

Sent from my GM1915 using Tapatalk
__________________
2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
jflogerzi is offline   Reply With Quote
Old 05-09-2021, 09:43 PM   #12
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '23 BRZ
Location: Providence, RI
Posts: 4,577
Thanks: 1,373
Thanked 3,883 Times in 2,027 Posts
Mentioned: 85 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by jflogerzi View Post
So it throws a code and goes into limp? If you were in limp you would be stuck below 4000 rpm

Sent from my GM1915 using Tapatalk
No codes thrown, just loses power, then kinda recovers after a bit. *Almost* as if it were fuel starvation.
ZDan is offline   Reply With Quote
Old 05-09-2021, 09:51 PM   #13
NoHaveMSG
Senior Member
 
NoHaveMSG's Avatar
 
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,118
Thanks: 18,090
Thanked 16,253 Times in 7,346 Posts
Mentioned: 106 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by ZDan View Post
No codes thrown, just loses power, then kinda recovers after a bit. *Almost* as if it were fuel starvation.
Weird. Is it easy to replicate? I would think if it was a VVT issue it would give you a code P00XX code for camshaft position correlation or response.
__________________
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
NoHaveMSG is offline   Reply With Quote
Old 05-09-2021, 09:58 PM   #14
jflogerzi
Senior Member
 
jflogerzi's Avatar
 
Join Date: May 2012
Drives: 2013 Series 10 6MT FR-S
Location: Moreno Valley, CA
Posts: 5,520
Thanks: 1,998
Thanked 2,004 Times in 1,452 Posts
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Garage
Just cause you have a full tank you can still get fuel starvation
@CSG Mike

Sent from my GM1915 using Tapatalk
__________________
2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
jflogerzi is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Possible overrev on the track; does ECU store max lifetime RPM reached? SmoothIsSlow Engine, Exhaust, Transmission 21 07-22-2021 06:04 PM
Need help about the mechanical coverage! hoangjm Scion FR-S / Toyota 86 GT86 General Forum 29 04-11-2019 02:51 AM
frs oversteer in brz mechanical? swpbrz Suspension | Chassis | Brakes -- Sponsored by 949 Racing 5 03-18-2014 09:48 PM
Overall mechanical satisfaction? Tman08 Issues | Warranty | Recalls / TSB 15 08-26-2013 05:28 PM


All times are GMT -4. The time now is 06:49 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.