Built engine - GEN-2 GTX3076r - Page 18 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DarkPira7e · 05-01-2024, 09:59 AM

I've always wondered if this was a trait of the stock diff. Mine does the same.

Kris86 · 05-01-2024, 09:56 PM

Quote:

Originally Posted by M0nk3y

It almost looks like it's crab walking under load. Which, even if it track straights under normal driving under load it can certainly exhibit different behaviors.

IMO - this isn't a suspension setting itself, it's total toe on the rear, diff, axle, etc. Something else is causing this issue. Adjusting perch settings on your shock isn't going to fix the extreme crab walking going on

Mmmmm, now this was the type of info I was hoping to hear, something I would not of thought of.

The real Question is…. Is there anyway around this you think ?

Appreciate your input

M0nk3y · 05-02-2024, 09:50 AM

Quote:

Originally Posted by Kris86

Mmmmm, now this was the type of info I was hoping to hear, something I would not of thought of.

The real Question is…. Is there anyway around this you think ?

Appreciate your input

Do you have MCA Traction Mod or anything related to tension arm suspension correction?

The car under squat exhibits some odd behaviors without suspension geometry correction. Perhaps that might be good first place to start.

https://www.ft86club.com/forums/show...&postcount=253

RedReplicant · 05-02-2024, 08:37 PM

I agree with Monk3y. My car did the crabwalking stuff (go left on throttle, go right on lift throttle) when I bought it, after tearing everything apart I realized the SPL traction arms were adjusted to different lengths. Maybe you've worn out some bushings in the rear and there is now enough force under power to move it.

Kris86 · 05-05-2024, 10:15 AM

Quote:

Originally Posted by M0nk3y

Do you have MCA Traction Mod or anything related to tension arm suspension correction?

The car under squat exhibits some odd behaviors without suspension geometry correction. Perhaps that might be good first place to start.

https://www.ft86club.com/forums/show...&postcount=253

Thank you for this information. I have no suspension mods other than coil overs.

Suspension is definitely my next project.

05-01-2024, 09:59 AM	#239
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,024 Thanks: 3,289 Thanked 4,177 Times in 2,098 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	I've always wondered if this was a trait of the stock diff. Mine does the same. __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

05-02-2024, 08:37 PM	#242
RedReplicant Senior Member Join Date: Aug 2015 Drives: None Location: Arizona Posts: 960 Thanks: 1,533 Thanked 1,324 Times in 557 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	I agree with Monk3y. My car did the crabwalking stuff (go left on throttle, go right on lift throttle) when I bought it, after tearing everything apart I realized the SPL traction arms were adjusted to different lengths. Maybe you've worn out some bushings in the rear and there is now enough force under power to move it. __________________ 2015 Subaru BRZ - K24 Swap - NASA TT5 2005 Lotus Elise - K24 Swap - NASA TT3

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