Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by:

V8R X-Lite control arms: some assembly required

Thread Tools
 
Search this Thread
 
Old 09-07-2018, 01:27 PM
  #1  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default V8R X-Lite control arms: some assembly required

I figured I would put this info out there to make the arms easier to use for those who choose to buy them, and provide some honest feedback for those considering buying.

TIP #1 (RUCA): the OEM pivot bolt does not fit at the outboard location, as the machined clevis is thicker than the OEM arm. Solution: M10 x 90mm bolt and matching M10 x 1.5 nut.

afm is offline  
Old 09-07-2018, 01:28 PM
  #2  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #2 (RUCA): the roll center adjustment does not actually adjust roll center.

afm is offline  
Old 09-07-2018, 01:32 PM
  #3  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #3 (RUCA): The arm hits the body much earlier than the stock arm, before the tire even makes contact. Use the not-roll-center "unibody clearance adjuster" to improve this radically. This will get you to full tire contact for most setups, and a little massaging of the contact zone on the body can make some breathing room.


afm is offline  
Old 09-07-2018, 01:42 PM
  #4  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #4 (FUCA): The arm contacts the unibody before tire rub with 225/45R15. Contributing to this is the fact that the rod end is offset from the midplane of the arm, presumably to shift the bump/droop limits of the range of motion of the spherical bearing serving as the UBJ pivot.


afm is offline  
Old 09-07-2018, 01:47 PM
  #5  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

that's terrible. seriously terrible
18psi is offline  
Old 09-07-2018, 01:48 PM
  #6  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #5 (FUCA): Flipping the arm (logo down) radically increases body clearance. However, it moves the UBJ spherical bearing closer to bind at full bump relative to the stock orientation. A number of solutions can be used to correct for this, including shimming the height of the spherical bearing. However, I chose to substitute a true high-misalignment spacer (a modified version of a QA1 SN12-68) and an AN-7 bolt for the stock SHCS + counterbored, lower misalignment spacer.

Note in the first photo that the head of the SHCS had to be turned to fit the top spacer.



afm is offline  
Old 09-07-2018, 01:55 PM
  #7  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #6 (FUCA): Maybe throw some loctite retaining compound on the UBJ spherical.

Stock fit (turn headphones to max for full effect):


TIP #7 (FUCA): Also maybe get steel jam nuts to replace the aluminum jam nuts for the rod ends.
afm is offline  
Old 09-07-2018, 02:03 PM
  #8  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

Tire clearance when turbo hits block arm hits body.

afm is offline  
Old 09-07-2018, 02:06 PM
  #9  
Elite Member
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: Very NorCal
Posts: 10,441
Total Cats: 1,899
Default

Originally Posted by afm
TIP #6 (FUCA): Maybe throw some loctite retaining compound on the UBJ spherical.
Hey @afm, what flavor loctite do you recommend on that ubj spherical?
EO2K is offline  
Old 09-07-2018, 02:06 PM
  #10  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

Originally Posted by EO2K
Hey @afm, what flavor loctite do you recommend on that ubj spherical?
Ask your pro suspension builder.
concealer404 is offline  
Old 09-07-2018, 02:10 PM
  #11  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

TIP #7 (FUCA): If you use the stock hardware, make sure the SHCS head sits fully in the counterbore of the spacers. Turning the bolt heads is a fun drinking activity but maybe not a good solution.







Pictured: essential suspension installation tools.
afm is offline  
Old 09-07-2018, 02:17 PM
  #12  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

Originally Posted by EO2K
Hey @afm, what flavor loctite do you recommend on that ubj spherical?
Tastes kind of like lime to me.
afm is offline  
Old 09-07-2018, 02:35 PM
  #13  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

V8R is fully refunding you fort this utter garbage . Right???!!!
Originally Posted by concealer404
Ask your pro suspension builder.
V8R's track record speaks for others, to avoid vendor/sponsor fees
18psi is offline  
Old 09-07-2018, 02:48 PM
  #14  
Elite Member
 
codrus's Avatar
 
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 5,167
Total Cats: 856
Default

Originally Posted by afm
TIP #2 (RUCA): the roll center adjustment does not actually adjust roll center.



--Ian

codrus is offline  
Old 09-07-2018, 02:49 PM
  #15  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

Positive note: FUCA clearance like a hotdog in a hallway!

afm is offline  
Old 09-07-2018, 02:52 PM
  #16  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

THAT MAKES EVERYTHING WORTH IT

18psi is offline  
Old 09-07-2018, 02:52 PM
  #17  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

Those aren't Xidas. I deem that irrelevant.
concealer404 is offline  
Old 09-07-2018, 02:58 PM
  #18  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

does it fit with extended bj's doe?

also

TIP # 69:

this is the ONLY way of communication with v8r. please do not attempt futile outdated ways like telephone and email, you have been educated


TIP # 69.5: the pigeons should all be routed to Concealer404's house, NOT Florida.
18psi is offline  
Old 09-07-2018, 03:03 PM
  #19  
afm
Senior Member
Thread Starter
iTrader: (3)
 
afm's Avatar
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 981
Total Cats: 508
Default

Originally Posted by concealer404
Those aren't Xidas. I deem that irrelevant.
Yeah, I think they're Racelands or something. Came free on my car.
afm is offline  
Old 09-07-2018, 03:08 PM
  #20  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,917
Total Cats: 2,201
Default

Originally Posted by afm
Yeah, I think they're Racelands or something. Came free on my car.
I like the threads. They look nice and beefy and resistant to clogging with normal road dust/dirt.
concealer404 is offline  


Quick Reply: V8R X-Lite control arms: some assembly required



All times are GMT -4. The time now is 08:47 PM.