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BRAKE UPGRADE 3000GT vr4


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i dont believe there are any calipers that are a direct bolt on upgrade. im working on plates not with another member to use 300zx or 3kgt 4piston calipers on the stock rotors, and also larger rotors with the stock calipers or upgraded calipers.
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Shift, I don't have to worry about you but to all the rest, don't forget us 4 lug guys.

 

dont worry scotty, everything will be 4 lug compatible, just need to drill the rotors out to fit unfortunately. I looked for a long time to find some larger 4 lug rotors and i couldnt seem to find any.

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dont worry scotty, everything will be 4 lug compatible, just need to drill the rotors out to fit unfortunately. I looked for a long time to find some larger 4 lug rotors and i couldnt seem to find any.

 

it's ok man. I plan on usin whatever you come up with. But as with everything, more options are always good. I may try to work on somethin once I get set up in El Paso as well.

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boy i didnt know i was going to bring up a popular subject lol reason i did is a buddy of mine has a totaled 3kgt vr4 and i was wondering if i could use the brakes from it it sucks he got to own it for a total of 5 days befor he got smacked on the rear really bad ill see if i can get yall a pic of the damage real fast but it was jacked up bad so he is parting her out and about to get another one with the insurance money so i am tryn to see what all i can use from the vr4 on my star
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OUCH! Well definately save the calipers!

 

Im not sure how exactly everything is going to work but here is my plan.(and its just a plan and not in this order)

 

3kgt or 300zx calipers with stock starion 276mm rotors w/caliper in front

 

3kgt or 300zx calipers with nsx 282mm rotors w/caliper in front

 

Stock calipers with nsx 282mm rotors w/caliper in front of rotor

 

Stock calipers with nsx 282mm rotors w/caliper behind rotor(stockish)

 

Stock calipers with 97+nsx 297mm rotors w/caliper in front of rotor

 

Stock calipers with 97+nsx 297mm rotors w/caliper behind rotor(stockish)

 

3kgt or 300zx calipers with 97+ nsx 297mm rotors w/ caliper in front

 

 

I also plan to work on something for the rear as well. I would like to see a big brake option up front that doesnt involve sourcing 4pot calipers($140each) and a new master cylinder. I am not planning on stocking kits or putting together an entire upgrade but I do plan on making and having brackets in a DIY fashion so you can paint your own bracket and source your own rotors(much cheaper for you and less headache for me). The drilled/slotted nsx rotors i got were $86 for the fronts, standard vented were only $46. Larger rotor and stock caliper will increase braking and keep braking temps down.

 

As it sits now the 282 nsx rotors should fit behind a 15" flatty wheel. Im thinking the 297 rotors will fit behind the stock 16" wheel but i dont know yet. Once i work out the 282 stuff with the stock caliper ill move on. With komeuppance's help we are trying to work out the 300zx caliper with the stock rotor.

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fyi, the 3kgt brakes HAVE to have alot of "offset" on the rotor to clear the wheels. ie, there is alot of space on the front side of the rotor since the caliper has pistons on that side also. I used crown vic cop car rotors.
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I got the rotors in the mail about 20mins ago and already see a problem. This isnt a problem for me since I have a lathe but for others it could be.

 

My stock 4 lug rotors have a 3.15" hole for the hub. the nsx rotors have a 2.75" hole for the hub. This wouldnt be a huge problem if my 4 lug hub wasnt 3.15" diameter at the bolting flange for the rotor. Without having the 5lug hubs yet i dont know if there is a difference but i would assume not.

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/nsxrotors.jpg

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/rotorthickness.jpg

 

does anyone have a hub sitting around they could measure the diameter on for me?

 

the austarion pdf file make mention of re-drilling the rotors for 4 lug but nothing about hub center being incorrect.

 

thank

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found a few more problems. I turned the centers on the lathe so i could mock them up over the hub and i find out the 4 bolt on the back side of the hub isnt on a 114.3mm circle. Its actually on a 99.5mm circle. Thankfully there were two drilled/tapped holes on the nsx rotor on this same pattern so i could bolt the rotor on to the hub for mock up.

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/BrakeMockUp8.jpg

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/BrakeMockUp.jpg

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/BrakeMockUp7.jpg

 

does anyone know what the 5 bolt on the 5lug rotor pattern is?

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okay so it was just brought to my attention that the 5 lug rotor setup is totally different than the 4 lug setup. Where my 4 lug stuff is sandwiched, the 5 lug is held by the rim. This makes things difficult as i dont think these rotors will work. Ill see what i can come up with once i have 5 lug stuff in hand.
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okay so it was just brought to my attention that the 5 lug rotor setup is totally different than the 4 lug setup. Where my 4 lug stuff is sandwiched, the 5 lug is held by the rim. This makes things difficult as i dont think these rotors will work. Ill see what i can come up with once i have 5 lug stuff in hand.

PLEASE DONT :thread20jacked8wq:

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okay so it was just brought to my attention that the 5 lug rotor setup is totally different than the 4 lug setup. Where my 4 lug stuff is sandwiched, the 5 lug is held by the rim. This makes things difficult as i dont think these rotors will work. Ill see what i can come up with once i have 5 lug stuff in hand.

This makes a lot of sense... explains why Starion4me used the stock rotors.

 

-Robert

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Thats very strange that mitsu would do it this way. Ill have to do some digging and wait until i have some hubs in hand before I see what can be done. From the pictures ive seen id say these nsx rotors are out of the question for the widebodies.
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http://www.26liter.us/gallery/albums/userpics/10030/DSCF5607.jpg

 

5 lug setup where the rotor goes over the rim mounting flange.

 

stock 4 lug stuff with rotor bolted to back side of hub

 

http://i268.photobucket.com/albums/jj39/shift1313/Starion/brakeconversion.jpg

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I have 3000gt calipers mounted to my Koni adjustables. Its a very easy to braket to make. i will try to get some pictures of them. I have not mounted them on the car yet to check for clearence. But they look nice with the "Mitsubishi" raised letters on it.

 

Jonathan

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stock caliper relocation with larger rotors(flatsider 4lug)

http://i268.photobucket.com/albums/jj39/shift1313/Starion/Starioncaliperrelocation.jpg

Stock widebody rotor with 4pot 300zx calipers

http://i268.photobucket.com/albums/jj39/shift1313/Starion/300zxCaliperBracket.jpg

flatsider with nsx rotors and 4pot calipers or 6pot calipers(wilwood)

http://i268.photobucket.com/albums/jj39/shift1313/Starion/StarionBrakeConversion.jpg

 

i have drawn multiple variations of these brackets depending on rotors/calipers etc but i havent been able to test them yet so i wont cut them yet. I dont like relying on other people measurements because i have been burned by that before having stuff cut out that doesnt fit.

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probably not, besides they are extremely heavy and huge. Get some Z32, Nissan 300zx Twin Turbo, 4 piston calipers, or some FC or FD rx-7 calipers.

 

 

i think the 300zx and the 3kgt calipers are the same except one says mitsu and one says nissan.

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okay so the stock caliper idea for the 4 lug is out. the nsx rotors are just under 30mm thick which means the stock caliper wont work unless the rotors are turned down. This is an option but not one that im going to pursue for myself. The nsx rotor could work if the caliper brackets were modified for clearance and custom pads were mad(porterfield does this).
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