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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.


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Old 01-24-2023, 09:42 AM   #1
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New product

I wonder if this makes a noticeable change in handling.

http://jacksonracing.com/pdf/npi/jr_...n4k0nifV_WnD8o
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Old 01-24-2023, 11:07 AM   #2
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That is interesting. I have the whiteline anti-dive kit and the car is a bit better under hard braking. This seems like a good alternative as the whitline kit is a PITA to install unless you have proper tools, and even then it's a pain to setup as there are not any good surfaces on the lower control arm to work off of.
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Old 01-24-2023, 01:27 PM   #3
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Very interesting…$250 is a little steep but nothing crazy.

I imagine an alignment is necessary after installing these right?

https://jacksonracing.com/product/fr...anti-dive-kit/
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Old 01-24-2023, 01:34 PM   #4
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Originally Posted by NoHaveMSG View Post
That is interesting. I have the whiteline anti-dive kit and the car is a bit better under hard braking. This seems like a good alternative as the whitline kit is a PITA to install unless you have proper tools, and even then it's a pain to setup as there are not any good surfaces on the lower control arm to work off of.
They're different...the Whiteline part reduces anti-dive whereas this Jackson Racing part adds anti-dive (I think).

I still don't like the poly bushing for the WL part.

- Andrew
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Old 01-24-2023, 01:48 PM   #5
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That is interesting. I have the whiteline anti-dive kit and the car is a bit better under hard braking. This seems like a good alternative as the whitline kit is a PITA to install unless you have proper tools, and even then it's a pain to setup as there are not any good surfaces on the lower control arm to work off of.
The Whiteline kit looks nothing like the JR kit. Do they do the same thing? The description for Whiteline kit does say it will reduce front wheel spin. Very important for our twins.

https://www.fastwrx.com/products/whi...correction-kit
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Old 01-24-2023, 02:11 PM   #6
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Quote:
Originally Posted by Racecomp Engineering View Post
They're different...the Whiteline part reduces anti-dive whereas this Jackson Racing part adds anti-dive (I think).

I still don't like the poly bushing for the WL part.

- Andrew
Huh. Interesting. Like I said, the car feels a bit better under breaking but haven't noticed anything else. Could also be placebo.

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The Whiteline kit looks nothing like the JR kit. Do they do the same thing? The description for Whiteline kit does say it will reduce front wheel spin. Very important for our twins.

https://www.fastwrx.com/products/whi...correction-kit
I think this fits some WRX models too so probably description fail.
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Old 01-24-2023, 02:33 PM   #7
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Originally Posted by norcalpb View Post
Very interesting…$250 is a little steep but nothing crazy.

I imagine an alignment is necessary after installing these right?

https://jacksonracing.com/product/fr...anti-dive-kit/
No Alignment needed afterwards.
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Old 01-24-2023, 02:36 PM   #8
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Originally Posted by Racecomp Engineering View Post
They're different...the Whiteline part reduces anti-dive whereas this Jackson Racing part adds anti-dive (I think).

I still don't like the poly bushing for the WL part.

- Andrew
Whiteline describes their solution as anti-dive and anti-lift.
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Old 01-24-2023, 03:02 PM   #9
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Originally Posted by dragoontwo View Post
Whiteline describes their solution as anti-dive and anti-lift.
They certainly do say that and have going back to old GD chassis Impreza days, but the proper name for their kit would have been pro-lift/dive.

https://motoiq.com/project-fr-s-gett...n-in-concepts/

Quote:
Originally Posted by Mike Kojima
Lastly, it move the pivot point of the lower control arm up by around 0.3 inches which reduces anti dive.
The Whiteline kit moves the pivot point up, and it looks like this JR kit moves it down.

- Andrew
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Old 01-25-2023, 01:35 PM   #10
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Originally Posted by Racecomp Engineering View Post
They're different...the Whiteline part reduces anti-dive whereas this Jackson Racing part adds anti-dive (I think).

I still don't like the poly bushing for the WL part.

- Andrew
Have you guys considered doing a podcast on car setup and how different geometry changes affect the car? There are a lot of parts out there like this, the MCA traction mod, parts that raise/lower the rear subframe that affect the chassis and how it behaves and a more comprehensive explanation on them would probably be enlightening to a lot of people. I would find it very interesting.
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Old 01-25-2023, 03:06 PM   #11
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Have you guys considered doing a podcast on car setup and how different geometry changes affect the car? There are a lot of parts out there like this, the MCA traction mod, parts that raise/lower the rear subframe that affect the chassis and how it behaves and a more comprehensive explanation on them would probably be enlightening to a lot of people. I would find it very interesting.
That's on the list for sure. We've got the tech articles on instagram (and i'll do one on anti-geometry soon) but we do hope to do more tech stuff with the podcast too, with or without guests.

- Andrew
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Old 01-29-2023, 12:47 AM   #12
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Originally Posted by Racecomp Engineering View Post
The Whiteline kit moves the pivot point up, and it looks like this JR kit moves it down.

- Andrew
Does this mean that one of these companies is getting this wrong? Everything I'm reading online says that lowering the rear pivot/raising the front pivot point add anti-dive, but this is for double wishbone suspensions where the upper arm is the one being adjusted...

I can hardly find anything for strut-based suspension setups, but "sources say" that lowering the front pivot point is what you want to do on our cars?

Basically, if you made an anti-dive kit, what would you do
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Old 01-29-2023, 11:17 PM   #13
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Originally Posted by norcalpb View Post
Does this mean that one of these companies is getting this wrong? Everything I'm reading online says that lowering the rear pivot/raising the front pivot point add anti-dive, but this is for double wishbone suspensions where the upper arm is the one being adjusted...
I don't think that really matters. It's been a while since I have looked at that kind of stuff. I just remember instant center being a big deal in relation to.......... something, something.

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Old 01-30-2023, 10:52 AM   #14
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Originally Posted by norcalpb View Post
Does this mean that one of these companies is getting this wrong? Everything I'm reading online says that lowering the rear pivot/raising the front pivot point add anti-dive, but this is for double wishbone suspensions where the upper arm is the one being adjusted...

I can hardly find anything for strut-based suspension setups, but "sources say" that lowering the front pivot point is what you want to do on our cars?

Basically, if you made an anti-dive kit, what would you do
The front of our cars don't have a lot of anti dive geometry from the factory.

The rear does have a lot of anti squat and lift...the MCA traction mod removes some of that and it is well liked.

More anti-dive means less of the forward weight transfer goes through the spring/shock and more goes directly through the chassis/arms (which means less dive but the weight transfer isn't controlled by the suspension).

Whether you want to add or remove dive from that baseline might depend on the rest of your suspension and car. Lots of aero tends to benefit from more anti-dive for example (keep the platform stable and flat).

I'd like to know what the change in anti dive comes out to with this part.

Not for or against the part at the moment, different people will have different needs.

- Andrew

Last edited by Racecomp Engineering; 01-30-2023 at 01:30 PM.
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