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

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum - 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 08-02-2021, 06:40 PM   #29
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '17 BRZ PP
Location: Providence, RI
Posts: 3,697
Thanks: 824
Thanked 2,853 Times in 1,532 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by CSG Mike View Post
secondary fuel pump on a manual switch that sits on the passenger side, dumping into main pump cup.

Fuel pumps are cheap, and burning one out once a year from starvation is a relatively small price for going faster. It's less than the cost of a single tire.
How difficult is that to implement? Has anyone documented this? If I wing it I *will* f it up :O
Will it fit under stock seats? Is street car...
ZDan is online now   Reply With Quote
Old 08-02-2021, 07:23 PM   #30
CSG Mike
 
CSG Mike's Avatar
 
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 13,805
Thanks: 8,615
Thanked 13,316 Times in 6,442 Posts
Mentioned: 932 Post(s)
Tagged: 14 Thread(s)
Quote:
Originally Posted by ZDan View Post
How difficult is that to implement? Has anyone documented this? If I wing it I *will* f it up :O
Will it fit under stock seats? Is street car...
Completely in-tank.

Documented.... not really. Been done? Absolutely.
CSG Mike is offline   Reply With Quote
Old 08-02-2021, 08:16 PM   #31
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '17 BRZ PP
Location: Providence, RI
Posts: 3,697
Thanks: 824
Thanked 2,853 Times in 1,532 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by CSG Mike View Post
Completely in-tank.
Documented.... not really. Been done? Absolutely.
Hhrrmm...

Do you have any thoughts regarding my getting fuel starvation at more than 7/8 tank after a long straight followed by a 90+ degree *right*-hander at Thompson?
ZDan is online now   Reply With Quote
Old 08-03-2021, 03:59 AM   #32
CSG Mike
 
CSG Mike's Avatar
 
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 13,805
Thanks: 8,615
Thanked 13,316 Times in 6,442 Posts
Mentioned: 932 Post(s)
Tagged: 14 Thread(s)
Quote:
Originally Posted by ZDan View Post
Hhrrmm...

Do you have any thoughts regarding my getting fuel starvation at more than 7/8 tank after a long straight followed by a 90+ degree *right*-hander at Thompson?
That shouldn't be happening. Investigate the fuel pressure drop.
CSG Mike is offline   Reply With Quote
The Following User Says Thank You to CSG Mike For This Useful Post:
ZDan (08-03-2021)
Old 08-03-2021, 10:39 AM   #33
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '17 BRZ PP
Location: Providence, RI
Posts: 3,697
Thanks: 824
Thanked 2,853 Times in 1,532 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by CSG Mike View Post
That shouldn't be happening. Investigate the fuel pressure drop.
I think I might go in and inspect my Verus fuel door installation. I'll probably remove it, at *best* it didn't improve things at all between New Hampshire and Palmer1. At *worst* that little 3d-printed plastic door (NOT the advertised and illustrated aluminum door with steel pins!) is f-ing things up due to either being broken or possibly too lightweight to work properly.

UPDATE: the part is indeed cnc'd aluminum, NOT 3d-printed plastic! So lightweight (due to being massively hogged-out) and painted shiny black plastic with integral pins rather than previous version (?) pressed steel pin, really gave me the impression of being plastic when I installed it! Just removed it and can confirm it's aluminum

Last edited by ZDan; 08-13-2021 at 03:28 PM.
ZDan is online now   Reply With Quote
Old 08-03-2021, 10:55 AM   #34
Goingnowherefast
Senior Member
 
Join Date: May 2019
Drives: AP2 S2000, 91 Miata 1.8L Rotrex 5MT
Location: Detroit, MI
Posts: 423
Thanks: 230
Thanked 266 Times in 170 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by ZDan View Post
I think I might go in and inspect my Verus fuel door installation. I'll probably remove it, at *best* it didn't improve things at all between New Hampshire and Palmer1. At *worst* that little 3d-printed plastic door (NOT the advertised and illustrated aluminum door with steel pins!) is f-ing things up due to either being broken or possibly too lightweight to work properly.
Wait what? I'm 99.9% sure mine was CNC'd aluminum with steel pins. Purchased within the last 3 months.
__________________
2017 Subaru BRZ w/ PP - Delicious Tuning S2+ Flex Fuel/JDL 4-2-1/HKS Single/RCE Tarmac II's 9K/9K - (SCCA TT T4)
Goingnowherefast is offline   Reply With Quote
Old 08-03-2021, 11:28 AM   #35
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '17 BRZ PP
Location: Providence, RI
Posts: 3,697
Thanks: 824
Thanked 2,853 Times in 1,532 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Goingnowherefast View Post
Wait what? I'm 99.9% sure mine was CNC'd aluminum with steel pins. Purchased within the last 3 months.
They changed over at some point. Here's the plastic part:



The density of PLA plastic is less than half that of aluminum, and it's only 65% more dense than gasoline. Pretty sure I'm gonna remove it and ask for my $$ back.

They show the anodized aluminum one on the Verus website and here's their description:
SPECIFICATIONS
CNC Machined
6061-T6 Aluminum Construction
Anodized Bright-Dip Black
Viton O-Ring for Ethanol and Gasoline Compatibility

Yeah, that is not what I got...
ZDan is online now   Reply With Quote
Old 08-05-2021, 08:50 AM   #36
TunaNoCrust
Senior Member
 
TunaNoCrust's Avatar
 
Join Date: Apr 2019
Drives: 86, 981S, RX8, 2500HD, GenesisV8
Location: Palmer Motorsports
Posts: 101
Thanks: 73
Thanked 67 Times in 40 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Dan, you got hosed! I would definitely get my money back, that is way too much money for a PLA printed part!

Talked to some of the GTA guys and they said only starvation at half, and one of them tried the fuel door and it didn't fix it either.
TunaNoCrust is offline   Reply With Quote
The Following User Says Thank You to TunaNoCrust For This Useful Post:
ZDan (08-05-2021)
Old 08-05-2021, 10:52 AM   #37
ZDan
Senior Member
 
ZDan's Avatar
 
Join Date: May 2011
Drives: '17 BRZ PP
Location: Providence, RI
Posts: 3,697
Thanks: 824
Thanked 2,853 Times in 1,532 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by TunaNoCrust View Post
Dan, you got hosed! I would definitely get my money back, that is way too much money for a PLA printed part!
I'd be fine with it if it *worked*. But no way I would have even bothered with it, whatever the price, had I known it was plastic.
PLA is only 1.65x denser/heavier than gasoline.
Aluminum is 3.6x denser/heavier than gasoline.
Stainless steel is ~3x denser/heavier than aluminum and IMO would have been the way to go...

Plastic is a stupid material choice for this application for anything other than making the part cheap.

Quote:
Talked to some of the GTA guys and they said only starvation at half, and one of them tried the fuel door and it didn't fix it either.
I think I have an aluminum one on the way to me now. On the fence whether I'll install that when I remove the plastic one or just revert to stock with no door.
ZDan is online now   Reply With Quote
Old 08-05-2021, 11:39 AM   #38
ML
Senior Member
 
ML's Avatar
 
Join Date: Sep 2012
Drives: 13 White MT FR-S
Location: Gastonia, NC
Posts: 1,578
Thanks: 755
Thanked 637 Times in 355 Posts
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Sapphireho View Post
Did you replace the black rubber seal(one time use part) and the green ring? And did you put it together properly? I have yet to meet a twin "expert" who has done it correctly.
You have to ensure the black seal lip isn't hanging over the tank lip before tighting correct? I had a bad seal and replaced it and noticed this as I was putting the lock nut back on. If thats not what you mean can you expand on your comment?
__________________


Build Thread
Quote:
Originally Posted by Symbiont View Post
I swear I will punch your car if you put these on. Right in the face.
ML is online now   Reply With Quote
Old 08-05-2021, 11:43 AM   #39
ML
Senior Member
 
ML's Avatar
 
Join Date: Sep 2012
Drives: 13 White MT FR-S
Location: Gastonia, NC
Posts: 1,578
Thanks: 755
Thanked 637 Times in 355 Posts
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by CSG Mike View Post
Completely in-tank.

Documented.... not really. Been done? Absolutely.
it has been documented pretty well by the 350/370z community. Same principal.
__________________


Build Thread
Quote:
Originally Posted by Symbiont View Post
I swear I will punch your car if you put these on. Right in the face.
ML is online now   Reply With Quote
Old 08-05-2021, 01:28 PM   #40
norcalpb
Senior Member
 
norcalpb's Avatar
 
Join Date: Oct 2013
Drives: '13 DGM BRZ Limted
Location: SF Bay Area
Posts: 1,835
Thanks: 762
Thanked 578 Times in 410 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by ZDan View Post
They changed over at some point. Here's the plastic part:



The density of PLA plastic is less than half that of aluminum, and it's only 65% more dense than gasoline. Pretty sure I'm gonna remove it and ask for my $$ back.

They show the anodized aluminum one on the Verus website and here's their description:
SPECIFICATIONS
CNC Machined
6061-T6 Aluminum Construction
Anodized Bright-Dip Black
Viton O-Ring for Ethanol and Gasoline Compatibility

Yeah, that is not what I got...
Please keep us updated on what they say! Verus is always revising their parts, but this is the first time I’ve seen them changed for the worse…thank you for doing the math on the density of the part materials.
norcalpb is offline   Reply With Quote
Old 08-06-2021, 08:12 AM   #41
TunaNoCrust
Senior Member
 
TunaNoCrust's Avatar
 
Join Date: Apr 2019
Drives: 86, 981S, RX8, 2500HD, GenesisV8
Location: Palmer Motorsports
Posts: 101
Thanks: 73
Thanked 67 Times in 40 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by ZDan View Post
PLA is only 1.65x denser/heavier than gasoline.
And that is assuming they are using 100% infill...and if they are using an FDM type printer, the part is not liquid tight anyways.

The GTA guy said his door was plastic as well.
TunaNoCrust is offline   Reply With Quote
Old 08-06-2021, 10:57 AM   #42
FR-S2GT86
"I don't know."
 
FR-S2GT86's Avatar
 
Join Date: Nov 2019
Drives: Was '15 FR-S, 6MT, Now '15 GT86
Location: West Virginia, USA
Posts: 1,093
Thanks: 149
Thanked 744 Times in 456 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
@ZDan, has your car by chance been included in the new fuel pump recall? Just a thought.
__________________
Quote:
Originally Posted by Mr.ac View Post
My pubes are shaped like the number 86. There for Iím car. Derp
Count to muffens and call again.
Iím 40. So....... say hi to your sisters or daughters.
FR-S2GT86 is online now   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
DIY : Draining the gas tank - Methods to empty fuel tank Mermoz DIY (Do-It-Yourself) Guides 2 09-06-2021 02:04 PM
Fuel Starvation? Lunatic Tracking / Autocross / HPDE / Drifting 37 03-28-2018 11:47 PM
How to fix fuel starvation on left hand turns - Verus Fuel Door FT-86 SpeedFactory Engine, Exhaust, Transmission 3 08-21-2017 03:22 PM
Fuel Starvation issues? YAY OR NAY? track_warrior Tracking / Autocross / HPDE / Drifting 23 10-22-2013 11:19 AM
Fuel Starvation feldy Tracking / Autocross / HPDE / Drifting 1 06-09-2012 10:14 AM


All times are GMT -4. The time now is 12:17 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.