Z1 Front Upper Control Arm (race) followup
03-01-2016, 01:38 AM
#16
I hate to say it but you get what you pay for!!
I changed out all my parts to SPL and will never look back..
I gave up on Z1.. There so called silicon hoses they are suppose to never crack and last the life time of the car Is garbage as well..after 2 yes they are already falling apart!
I changed out all my parts to SPL and will never look back..
I gave up on Z1.. There so called silicon hoses they are suppose to never crack and last the life time of the car Is garbage as well..after 2 yes they are already falling apart!
03-01-2016, 06:14 AM
#17
Registered Member
The new one is also failing. I didn't bother trying to tighten anything before installing since Spencer said they are all preassembled. This one is coming apart as well. My point to Spencer was that their QA sucks. Really makes me lose confidence in their other products.
I guess they will be changing their directions to include tightening the joints. I myself will be opting for a refund and a different product.
I guess they will be changing their directions to include tightening the joints. I myself will be opting for a refund and a different product.
03-01-2016, 08:15 AM
#18
Registered Member
when SPL makes a quality product why try and be an early adopter for the z1 product?
while z1 does come up with some new products for our cars (like their z1 csc, rear diff cover etc) i am hesitant to buy them because i always get the feeling they are extremely busy and lack a bit in the customer service department and after sales and quality checks.
while z1 does come up with some new products for our cars (like their z1 csc, rear diff cover etc) i am hesitant to buy them because i always get the feeling they are extremely busy and lack a bit in the customer service department and after sales and quality checks.
03-01-2016, 08:17 AM
#19
Registered Member
I hate to say it but you get what you pay for!!
I changed out all my parts to SPL and will never look back..
I gave up on Z1.. There so called silicon hoses they are suppose to never crack and last the life time of the car Is garbage as well..after 2 yes they are already falling apart!
I changed out all my parts to SPL and will never look back..
I gave up on Z1.. There so called silicon hoses they are suppose to never crack and last the life time of the car Is garbage as well..after 2 yes they are already falling apart!
03-01-2016, 06:42 PM
#20
Registered User
Thread Starter
I don't know how long you drove on it making noise. They told me I destroyed the teflon on the inside of my old one driving on it. If they want you to locktight the bolt they should probably include those steps in the instructions. They don't mention you'll need an 8mm allen key to complete the job. They also don't mention doing anything to the heim joint. When I spoke with Spencer I told him about the issue and how I read others have had the same problem. He assured me a new one would solve the issue. I purposely didn't tighten anything because I wanted to test their QA. Spencer said they're preassembled and do not require tightening. It's the principle of it for me. If you cause an issue for me and then neglect to take precautions to prevent it from happening again, I don't want your product on my car. I will gladly start all over again and swap out for something better!
03-01-2016, 07:12 PM
#21
Registered Member
I don't know how long you drove on it making noise. They told me I destroyed the teflon on the inside of my old one driving on it. If they want you to locktight the bolt they should probably include those steps in the instructions. They don't mention you'll need an 8mm allen key to complete the job. They also don't mention doing anything to the heim joint. When I spoke with Spencer I told him about the issue and how I read others have had the same problem. He assured me a new one would solve the issue. I purposely didn't tighten anything because I wanted to test their QA. Spencer said they're preassembled and do not require tightening. It's the principle of it for me. If you cause an issue for me and then neglect to take precautions to prevent it from happening again, I don't want your product on my car. I will gladly start all over again and swap out for something better!
03-01-2016, 11:30 PM
#22
Cost was the biggest factor. The product appeared to be solid. They looked harder to adjust but that's what the alignment guy does anyways. What I found out is that they're not assembled properly in many cases I've read about and experienced. That's not exactly the area you want assembly issues with. I can't speak for the poly street version but I'm not going to try either.
I'll just go with the Kinetix as a replacement.
I'll just go with the Kinetix as a replacement.
03-02-2016, 03:32 PM
#23
Registered Member
03-03-2016, 07:47 AM
#26
Registered Member
The principal of caster adjustment on the Z1's is exactly like it is on the SPL's. "To adjust caster, lengthen or shorten one adjuster at a time. For more caster shorten the adjuster towards the rear
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
Neither does SPL 
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
The following users liked this post:
blnewt (03-03-2016)
03-04-2016, 10:21 AM
#27
The principal of caster adjustment on the Z1's is exactly like it is on the SPL's. "To adjust caster, lengthen or shorten one adjuster at a time. For more caster shorten the adjuster towards the rear
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
Neither does SPL
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
Neither does SPL
ummm you sure about that!!
Adjustment ranges: On a 2009 Nismo test car we reached -4.8 degrees of camber at 5 degrees of caster. At -4 degrees of negative camber, we achieved 6.5 degrees of caster and at -3.5 degrees of camber we could get to 7.7 degrees of caster. Camber correction was measured at 0 degrees of camber.
03-05-2016, 09:34 PM
#28
Registered Member
35sport if you think it's "misinformation" then both SPL doesn't know what they're talking about and neither does Z1 when you call and talk to them...
What you showed is initial install of the arms. Do you think you install them as close as you can get and leave them like that? Hence the "set the arms to the factory fuca lengths".
What you showed is initial install of the arms. Do you think you install them as close as you can get and leave them like that? Hence the "set the arms to the factory fuca lengths".
03-05-2016, 09:35 PM
#29
Registered User
Thread Starter
The principal of caster adjustment on the Z1's is exactly like it is on the SPL's. "To adjust caster, lengthen or shorten one adjuster at a time. For more caster shorten the adjuster towards the rear
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
Neither does SPL
of the vehicle or lengthen the adjuster towards the front of the vehicle. For less caster lengthen the adjuster
towards the rear of the vehicle"
Page 1, second paragraph of SPL's instructions:
http://www.splparts.com/content/SPLFUAZ34.pdf
Neither does SPL
Z1 Motorsports Adjustable Front Upper Control Arms feature an offset ball joint location in order to deliver an optimal caster increase. Increasing the amount of positive caster will increase steering effort and straight line tracking, as well as improve high speed stability and cornering effectiveness. Positive caster also increases camber when cornering as the steering angle is increased to keep your Z planted through hard corners.
**In addition to a slight increase in caster, they have an adjustable arm length to provide additional camber adjustment for stance or tracking for the serious motoring enthusiast.
