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iMR2's Anti-Flex Plate Installation

iMR2 Anti-Flex Plate Installation
By: Whelp 

Disclaimer & Intro:  
This is not the definitive guide to installing the iMR2 ANTI-FLEX PLATE. This is simply a quick write up of the experience I went through when I installed mine. I hope it helps anyone else that may have questions, but by no means is this, the 100% official way to install it. So if you make a mistake or mess up please DO NOT BLAME ME. I have included the torque specs in this article. For anyone who is curious I am not a mechanic, but I have and do work on cars. IMHO anyone who knows how to use basic tools (wrenches, ratchets, jacks…) should be able to do this. This is VERY simple to install, and will take about 20mins.  

Tools Used:  

bullet½ inch drive Torque Wrench (ft/lbs.)
bullet½ inch drive Ratchet
bullet½ inch drive extender 3 inches in length
bullet½ inch drive sockets (12mm)
bulletPliers
bulletCar ramps (2 ½ tons)
bulletRamp extenders (The ramps will not work with out extenders, and will only work in the rear with extenders!) 
bulletFloor Jack 2 & ½ ton  (5 ¼ inch to 15 ½ inch lift)
bulletJack stands 2 ton
bulletCardboard boxes to lay on (The parking area on my property is gravel…OUCH!)  

Torque Specs:

All bolts are at 28ft/lbs

 

iMR2 Anti-Flex plate:

bullet

1 Plate

bullet

6 8mm standard washers

bullet

I found the plate to be  extremely well constructed, and very sturdy.  

Splat in the air on ramps and jack stands.
Part I Lifting the Car:

A.     The first thing I did was back the car up onto my ramps. For ease of installation I think it is best to have the Car up in the air. It was not necessary, but I lifted the entire car using a combination of Ramps and Jack stands. This was only for photographic reasons. With just the rear up on the ramps, I had plenty of room to work on the plate.

Diagram of the proper jack placement points.
B.    If you are going to use jack stands, be sure to follow the jack point guidelines. Damage has occurred to some others cars due to improper lifting.
The stock front brace needs to be removed.
Part II Old Braces Removal & New Anti-Flex Installation:

Off with the old and on with the new.

A.     The first thing I did was to unclip the AC /Heater hose/lines from the on the stock front gray chassis brace. DO NOT remove them. Just dismount the clips off of the brace and leave them attached to their respective AC /Heater hose/lines. I used a small pair of pliers to pinch the clips closed and then pushed up on them in order to remove them from the old brace. Be careful not to damage the clips. I have found that wrapping each side end of the pliers in electrical tape helps prevent damage from the plier’s teeth. The clips will be reused and if damaged may not clip properly on the Anti-Flex Plate. This could cause and most likely will cause the AC /Heater hose/lines to flop around while driving.

 
The rear brace also needs to be removed.

B.     Next I loosened all of the bolts. There are six total, four on front brace, two on the rear brace. Once everything was loose I went ahead and removed the bolts using my hands. As usual I placed then in the exact order of to the side so I could reuse them in the exact same order. The braces dropped right off with no problem.

 
The new brace installed and torqued to spec.

C.  I then proceeded to place the 8mm washers onto the bolts, be sure to install the washers to get the proper torque. Next I secured the plate in place tightening all the bolts down by hand. Then I attached the clips from the AC /Heater hose/lines to the plate. This was the hardest part. There was just enough room provided by the two large holes to work with, so I could fit my fingers through and apply enough pressure to pop the clips through. I did end up using the pliers to pull the clip closest to the passenger side all the way through. It might be easier to attach the clips prior to mounting the plate. Once this was done I torqued all 6 bolts down to 28ftlbs. 

 
Side view of the anti-flex plate installed.
Closeup showing the clips that support the cooling lines in place.  Use the finger holes in the plate to snap them in place.
Part III Post Mortem:

Well all that was left was to put Splat back down, and go for a test drive. Below are some copies of some post of my impressions I made on www.spyderchat.com after the install and test-drive. I would like to add 1 more comment. Just like everything else I have added to improve already GREAT handling, this piece leaves you wondering how you were driving with out it…Once again much gratitude to iMR2 for getting this sweet simple piece of hardware out to the Spyder community!

 

Selected Commentary from SpyderChat:

 

Whelp

Well it’s on, and how sweet it is!

First of all I must say after pulling it out of the box I was a little dubious as to if it would really help out, but after driving around and hit the twistys I was VERY happy I put it on.

Installation was a breeze; the longest part was lifting the car. Well with in 20minutes on was back on the ground and heading out for HWY 9 and a few other local twistys!

I do not have the exact technical words to describe the difference, but I will give my impressions/feelings.
First thing I noticed was road feel, much improved. I gave me the sense of knowing what each wheel was doing. Strangely I also felt like the center point of gravity, or the central point in which the car rotates around while cornering changed a wee bit. It feels more balanced more centralized. Plus just when I thought the rear end could not get any stiffer and feel any stickier, I was proven wrong by this little beauty! She may not be much to look at, but she does what she does VERY well. As I found out, and the SH Prelude found out on my 2nd and 3rd twisty sessions. That’s right I got hooked all over again and I could not get enough twistys in!

 

R11

Whelp, Did you happen to notice if it felt like the plate reduced body flex over bumpy surfaces much? And what about increased vibration/noise?

 

Whelp

I did not notice any increased vibration/noise, if anything there was less... The only vibration/noise I have is the Damn latch for the top when it is locked down! Thanks for the question and the reminder.

Ruff roads, Not a problem! A few places that I use for suspension mod testing are a bit ruff. Previously on some of the uneven areas and bumpy I did notice flex, and lose of traction (bump steer type of stuff) Yesterday I did not. There is one section in particular on an uphill grade that is a "S" curve. The bottom of the S slant down and to the passenger side, (sort'a of concave just on the passenger side) just as you pass the apex it is back up and levels briefly. Then as you enter the start of the top of the S it becomes off camber slanting down towards the driver side. Yesterday was no problem. Best of all and for those that have been to my house will remember... As you turn off of HWY9 on to my road there is a severely step uneven incline up to if not more than 45 degrees. I always notice flex and feel it to. Mostly after the Sportivo install. Now that I reflect back. There was still some, but no where near as noticeable as it usually is!

 

Whelp

I feel I could be taken the wrong way so...
Explanation of my initial dubious feelings:
I was mostly leery of there only being 2 large holes in the plate. I was under the false impressions that more holes = stronger structure. (honeycomb effect) I am no metal working expert and If I have misled anyone by my "dubious" comment. Please head back in the right direction. This Thing KICKS A$$!!! iMR2 has done a awesome job, and when he says it feels stronger over the cusco version I am a true believer!
Out'a the box she is shinny and sweet, much larger than expected. I would say about the size of a Skateboard. Construction is tight and good to go!

 

Whelp

Well it’s on, and how sweet it is!

First of all I must say after pulling it out of the box I was a little dubious as to if it would really help out, but after driving around and hit the twistys I was VERY happy I put it on.

Installation was a breeze; the longest part was lifting the car. Well with in 20minutes on was back on the ground and heading out for HWY 9 and a few other local twistys!

I do not have the exact technical words to describe the difference, but I will give my impressions/feelings.
First thing I noticed was road feel, much improved. I gave me the sense of knowing what each wheel was doing. Strangely I also felt like the center point of gravity, or the central point in which the car rotates around while cornering changed a wee bit. It feels more balanced more centralized. Plus just when I thought the rear end could not get any stiffer and feel any stickier, I was proven wrong by this little beauty! She may not be much to look at, but she does what she does VERY well. As I found out, and the SH Prelude found out on my 2nd and 3rd twisty sessions. That’s right I got hooked all over again and I could not get enough twistys in!

 

R11

Whelp, Did you happen to notice if it felt like the plate reduced body flex over bumpy surfaces much? And what about increased vibration/noise?

 

Whelp

I did not notice any increased vibration/noise, if anything there was less... The only vibration/noise I have is the Damn latch for the top when it is locked down! Thanks for the question and the reminder.

Ruff roads, Not a problem! A few places that I use for suspension mod testing are a bit ruff. Previously on some of the uneven areas and bumpy I did notice flex, and lose of traction (bump steer type of stuff) Yesterday I did not. There is one section in particular on an uphill grade that is a "S" curve. The bottom of the S slant down and to the passenger side, (sort'a of concave just on the passenger side) just as you pass the apex it is back up and levels briefly. Then as you enter the start of the top of the S it becomes off camber slanting down towards the driver side. Yesterday was no problem. Best of all and for those that have been to my house will remember... As you turn off of HWY9 on to my road there is a severely step uneven incline up to if not more than 45 degrees. I always notice flex and feel it to. Mostly after the Sportivo install. Now that I reflect back. There was still some, but no where near as noticeable as it usually is!

 

Whelp

I feel I could be taken the wrong way so...
Explanation of my initial dubious feelings:
I was mostly leery of there only being 2 large holes in the plate. I was under the false impressions that more holes = stronger structure. (honeycomb effect) I am no metal working expert and If I have misled anyone by my "dubious" comment. Please head back in the right direction. This Thing KICKS A$$!!! iMR2 has done a awesome job, and when he says it feels stronger over the cusco version I am a true believer!
Out'a the box she is shinny and sweet, much larger than expected. I would say about the size of a Skateboard. Construction is tight and good to go!




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