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kyoo Jan 31, 2022 09:06 AM


Originally Posted by ViciousLSD (Post 11948519)
BTW this guy is going to lose a flashlight once he pops the balljoint loose lol

LOL after seeing a few balljoints popped loose, I understand this reference.

ViciousLSD Jan 31, 2022 09:13 AM


Originally Posted by kyoo (Post 11948521)
LOL after seeing a few balljoints popped loose, I understand this reference.

OE bushings flex so that control arm will catapult that flashlight lol. sometimes i forget this since my evo has all urethane bushings

kyoo Jan 31, 2022 09:20 AM


Originally Posted by kaj (Post 11948516)
Works great. I'll get some pictures today.

which tape specifically did you get?

Dallas J Jan 31, 2022 09:32 AM

For the love of all that is holy, please no one ever use this style of arm.

https://stmtuned.com/collections/mit...e-control-arms

2 major issues,
1- The inner and outer bushing MUST be spherical. I have seen broken ears on stock uprights from this style but beyond that these will cause a bunch of stiction as the bolt holes dont necessarily sit parallel and move a lot in angle through suspension travel.
2- Threads in bending are about as awful of a decision on a track car as you can make. They are about 10-15% of the strength of a rod sized at the MINOR thread diameter. And these make it worse with threads being so far outward towards the shock mount.

kaj Jan 31, 2022 09:32 AM


Originally Posted by kyoo (Post 11948524)
which tape specifically did you get?

Not sure of the brand. I just bought the first roll I saw on Summit. I can't imagine brand would matter unless you're shopping on Amazon, etc.

kyoo Jan 31, 2022 09:36 AM


Originally Posted by Dallas J (Post 11948527)
For the love of all that is holy, please no one ever use this style of arm.

https://stmtuned.com/collections/mit...e-control-arms

2 major issues,
1- The inner and outer bushing MUST be spherical. I have seen broken ears on stock uprights from this style but beyond that these will cause a bunch of stiction as the bolt holes dont necessarily sit parallel and move a lot in angle through suspension travel.
2- Threads in bending are about as awful of a decision on a track car as you can make. They are about 10-15% of the strength of a rod sized at the MINOR thread diameter. And these make it worse with threads being so far outward towards the shock mount.

have a recommended? or stick with stock?


Originally Posted by kaj (Post 11948528)
Not sure of the brand. I just bought the first roll I saw on Summit. I can't imagine brand would matter unless you're shopping on Amazon, etc.

i bought on amazon, but its the same brand summit sells (design engineering)

anyone got a rockauto discount code that's still good? lmao

Dallas J Jan 31, 2022 09:53 AM

Looks like the Hardrace control arms have spherical in the outer mount and a better approach on the threaded section.

https://lamspeedracing.com/products/...earing-evo-4-9

Racefab also has a good set but they can take a while to get.

https://www.racefab.co.nz/_images/_m...er-Arms-lg.jpg

Also,
https://www.cartel-aus.com/product/j...-control-arms/

Or questionably,
https://godspeedproject.com/mitsubis...trol-arms.html




ViciousLSD Jan 31, 2022 10:17 AM

I have the Godspeed (v2). The "Hardrace" is the same as Megan. DO NOT get painted steel lower control arms!

Bee-Raddd Jan 31, 2022 10:31 AM


Originally Posted by ViciousLSD (Post 11948540)
I have the Godspeed (v2). The "Hardrace" is the same as Megan. DO NOT get painted steel lower control arms!

Ive used hardrace ones for about 4 - 5 years and not had an issue with them.. just keep them in good condition

ViciousLSD Jan 31, 2022 10:39 AM

"hardrace/megan"

https://cimg8.ibsrv.net/gimg/www.evo...2828796398.jpg

TimC909 Jan 31, 2022 11:20 AM

http://momentummotorsportshop.com/mi...justable-arms/

How do Momentum's fair?

ViciousLSD Jan 31, 2022 11:26 AM

what do you call that wobbly joint (like on the oe control arm) that is not exactly a spherical?

RazorLab Jan 31, 2022 11:29 AM

I'm still surprised SPL hasn't done anything for the Evo platform. I recently purchased a bunch of arms for my Supra and they are seemingly very nicely done.

Dallas J Jan 31, 2022 11:34 AM

SPL typically makes good stuff.

For the momentum parts, this is what kills me. I would never trust this joint. Carrying bending loads through threads, and high load with the entire suspension load going through it is just bad engineering. These things basically aren't engineered, they're just designed and made.
https://cimg4.ibsrv.net/gimg/www.evo...019a67d8e8.jpg

ViciousLSD Jan 31, 2022 11:49 AM


Originally Posted by Dallas J (Post 11948559)
SPL typically makes good stuff.

For the momentum parts, this is what kills me. I would never trust this joint. Carrying bending loads through threads, and high load with the entire suspension load going through it is just bad engineering. These things basically aren't engineered, they're just designed and made.
https://cimg4.ibsrv.net/gimg/www.evo...019a67d8e8.jpg

I'm not an engineer, but I think you only need tensile strength there.


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