Street or track version? I'm curious about the streets since I've only seen my own track version.

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Street version for me
 

I installed the street version since they use Urethane bushings and not the solid the race version have.
Less noise and vibration transfer and fully rebuild able.
I understand you can change them from one to the other just have to buy them other type.

Subd..

:eek: I don't like the sound of that.

The SPL arms. You don't have to do that with. You can adjust camber and caster on the car at the same time without taking nothing off. Loosen up the pitch bolts on the adjusters. Use a socket and a long extension. Go in to the adjusters from over the top of the tire. Make your adjustment. Done.:tup:

I contacted Z1 about this. Here's their reply,

I understand your concern. If you have Z1 arms or any other arms on the market and the average shop is doing an alignment, they may take more time or have to repeat some steps. A performance alignment shop should not have this issue, however, caster adjustment is not often on the control arms as it is a benefit when looking for the most adjustment possible, this can add to the process. Most performance alignment shops are used to working on advanced street cars, track cars and racecars, the work involved should be more less then what they normally see.

Alignment shops should adjust all arms as needed. It is part of the alignment to align and adjust any and all arms. Some basic shops may not need to make as many adjustments as you would find on a modified car. This is where the performance shops come into play. The arm will only need to be removed if adjusting for caster, adjusting camber is easy but the front tires would need to be removed. This will go for any camber/control arm on the market for the front.

Regarding the install of our arms, most qualified shops should be able to install and adjust these parts in 1-2 moves. If not I would probably be looking for another alignment shop.

Regarding removal single Camber on the street arms can be adjusted without removing the whole arm, similar to a Kinetix design the outer joint only has to be un bolted from the knuckle and spun to make the adjustment. This is the most common adjustment on street arms.

I plan on taking my car to Precision Z here in SoCal.
Services We Provide

I don't think they'll have any issues with these.

I purchased the z1 arms as well. Please keep us posted.

The Z1 arms are nice. But not as friendly to adjust as the SPL arms. ;)

For your reading enjoyment. Lots of pictures.

http://www.the370z.com/brakes-suspen...uspension.html

:tup:

There's no denying the SPL's are superior, just more than I need for the street.

Wanted to report I have had a ball joint failure on drivers side. Luckly I was slowing down for stop sign and was almost at a stop hit a small bump and SNAP!

Have you contacted Z1 yet? Do you have the street or track version and how long have you had them? Sorry for the all the questions but I was just about to order these.

Just happened in the last 2 hours. I have Emailed Z1 and had car towed to shop.
This seems to be an issue Z1 Front Upper Control Arm (race) followup - Page 3 - MyG37.
Had them installed less then 300 miles ago and these are the street version.

Keep us posted!!!

I'm installing these today the (street) version. Was yours assembled with the 271 red loctite?

I have no idea what Loctite they assembled them with.
I sent an Email to them last night right after it happened.
Received this Email today.

(Dear Valued Z1 Motorsports Customer,

Our records reflect that you recently purchased a product from Z1 Motorsports which now has an update available and we are going to send you free of charge. If you have had a change of mailing address in the last year, please reply to this email with your current shipping address via United States Postal Service. If you do not reply, we will ship the update and instructions to the address we have on file for the last order you placed with us.

Best Regards,

Spencer Hutchins
Z1 Motorsports
770-838-7777)

So there is a problem, but notified after the falure!