I know mostly everyone wants to and does upsize there size of there rotors and calipers. I am all for that but in my quest to get my car into the 12's down the quarter mile... I need/like to run 13x8 drag rims on slicks. I won on Ebay a set of bogart 13x8 wheels in 5 lug that were on Mitsubishi Eclipse GST. Is there anyway to swap out my front rotors and calipers to a smaller rotor and caliper from another honda? Like from an Accord 5 lug or Prelude Base 5 lug? Any insights?? Thanks guys

 

damn.. is your car only gonna be set up for drag?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">damn.. is your car only gonna be set up for drag?</TD></TR></TABLE>

kind of but not really. I would like the versatility of being able to swap rotors and calipers only. I know I could swap the whole civic spindle over but this would cause me to re-align my fronts whenever I swap between the two.

 

I have 90% of the info needed for you. gimme a couple minutes

 

The Following measurements were taken at Abacus Racing and Machine with their equipment. I recorded the measurements as accurately as I could with the tooling I had.

LS Brakes:Brembo Blanks Part #25331
ITR Brakes: Brembo Blanks Part #25464


LS/GSR Brakes are:
-.827" thick on your actual braking surface.
---The inside part of the disc measured .270"
---The outside part of the disc measured .293
---the void between the 2 parts measured .264
-The Outer diameter of the entire rotor measured 10.297" (accepted value is 10.3")
-The Backside inner rotor measured 6.273"
-The Hub Inner Diameter is 2.525"
-The Hub Outer Diameter is 5.980"
-The total weight (on a .05lb scale) was 11.10lbs
-The Brake Pads weighed 3.50lbs
-total weight of pads and rotors is 25.70lbs


ITR Brakes are:
-.909" thick on your actual braking surface.
---The inside part of the disc measured .274"
---The outside part of the disc measured .278
---the void between the 2 parts measured .357
-The Outer diameter of the entire rotor measured 11.097" (accepted value is 11.1")
-The Backside inner rotor measured 6.746"
-The Hub Inner Diameter is 2.761"
-The Hub Outer Diameter is 6.212"
-The total weight (on a .05lb scale) was 13.05lbs
-The Brake Pads weighed 4.20lbs
-total weight of pads and rotors is 30.30lbs

You'll notice the ITR rotor is .800" larger in diameter than the LS/GSR rotor. If you attempt to drill out the 4x100 bolt pattern to a 5x114.3, you will overlap at least one hole and will have a smaller hub centering ring on your rotor. Therefore using a LS/GSR redrilled rotor will not work on an ITR Hub.

What you have to do is to cut the ITR rotor down to a LS/GSR diameter of 10.297" You do this by taking it to your local machine shop and tell them "need the outer diameter of this brake rotor machined down from a size of 11.1" to 10.3" I do not know how much this would run, I would say around $70-140.

This also brings the weight down from 13.05lbs to 11.05 and 11.10lbs for my 2 rotors. I believe the extra .05lbs is from the differing final measurements of 10.297" and 10.301" respectively.

Doing this now enables you to use a stock LS/GSR Brake setup with an ITR Hub. I plan on finishing my conversion this week before NOPI Ohio. any questions? feel free to ask.

-Francisco

P.S. The Rears I am still working on, if not for rim selection, then for weight. also, if I can find a way to get a 5 lug on a dx drum, 13" tiny/skinny rims off an EG i believe are awesome rear DOT rims/tires

 

This is just AWSOME.....
I am in

So simple but effective.

 

Find kid with civic dx say I will trade you if you do the work. POW! instant tiny breaks and haapy kid

 

Just picked up a brand new set of front front Rotors for $45 bucks the pair.
Tomorrow I will start looking for Machine Shops around my area

 

try 06 civic rotors or rsx base rotors, its 5 lug

 

Ok, an update on my project. First. You can do this with no problems. Mine is completely assembled and about to go on the car tonight. With that said, a few adjustments need to be made.

1) Because of the increased overall thickness of the ITR disc, when you go to attach the caliper mounting bracket to the knuckle, the outside part pulls into and hits the brake disc. You need to space it apart. I used a washer to do this(i forget the thickness, but i will measure tomorrow for you.), and place it between the caliper mounting bracket and the knuckle. This pushes the caliper outwards .xxx" (to be measured soon).

2) Due to the thicker rotor, I was not able to use the anti squeel shims. However, I also rebuilt my entire front setup at this point. If you are using used pads and/or rotors, you might be able to get away with it. This also depends on what brand pads you get and if they are just as thick or not. Since I had a Drag application, I choose to leave them out.

3) Also, because I have a drag application, I decided to leave off the brake dust shield behind the hub. It SHOULD be able to be used with the new setup, i just cannot say for sure since I did not use it in my conversion.

I will post pictures up of the final product. I did not have time to picture document this whole process. If anyone else wants me to do this for them, i will charge you $50 plus materials for everything and provide pictures of every step.

-Francisco

 

I am not getting my front wheels after all. Problems with ebay person... damm.. Will try to source another set.