upgrade brake caliper, without rotor

munky

1,500 RPM
Senior Member

munky

1,500 RPM
Senior Member
Jul 18, 2004
1,967
20
3,138
PJ
www.playboy.com
Hi guys,

I got one question. Is it possible to upgrade the brake calipers from single pot to lets say 4 pot, but maintain using the same rotor/disc from the single pot brakes.

The reason i ask is because most aftermarket big brake kits are not made for bmw. Since BMW's wheels PCD is 120, if i take the rotors with the usual PCD 100/114.3, i need to change the rims also. So gonna cost more money. I know some brand do have rotors from BMW but not many.

So back to the question. Is it possible?
 

^pomen_GTR^

7,000 RPM
Senior Member

^pomen_GTR^

7,000 RPM
Senior Member
May 13, 2010
7,510
1,688
1,713
The Mines
possible.....


but definately have to do custom bracket and perhaps relocate your ABS sensor....


or maybe u can look around at chop shop for m3/m5 variant that always comes with better brakes...
 

DanzEterna

Moderator
Moderator
Senior Member

DanzEterna

Moderator
Moderator
Senior Member
Nov 1, 2007
15,916
3,371
1,713
PJ
www.primeperdanaclub.com
should be possible....if the std bmw rotors has the same diameter as the aftermarket ones to fit the calipers.
if its too big no prob...can grind the rotor, but if too small im not sure.

like pomen GTR mentioned, get m3/m5 ones.
 

munky

1,500 RPM
Senior Member

munky

1,500 RPM
Senior Member
Jul 18, 2004
1,967
20
3,138
PJ
www.playboy.com
abs not functioning anymore, coz changed to 1jz engine already.

yep even in mudah got sell m3/m5 brakes, but if possible id like brand new ones.

so basically its possible la. Hmm just need to find something that fits
 

mADmAN

Senior Member
Senior Member

mADmAN

Senior Member
Senior Member
Aug 5, 2004
1,840
547
3,213
u could still take the rotors and send them to machine shop and have them redrilled to ur hub's PCD.

instead of the PCD, u should be more worried about the rotor's tophat. ie the offset of the rotor. that cant be changed (unless its the floating hub rotor design)
 

munky

1,500 RPM
Senior Member

munky

1,500 RPM
Senior Member
Jul 18, 2004
1,967
20
3,138
PJ
www.playboy.com
how safe is it to drill the rotor? Coz some material is brittle and could cause cracks, and im afraid the distance from the center lari a bit. Id rather buy one that is made for that particular PCD.

1 more thing, is the thickness of the disc rotor normally the same for different brands? E.g. brembo rotor vs endless rotor, same diameter, for use with 4 pot calipers, thickness same?
 

mADmAN

Senior Member
Senior Member

mADmAN

Senior Member
Senior Member
Aug 5, 2004
1,840
547
3,213
ive been running my redrilled 4x100 (from 4x114.3) rotors for over 2 years... even had a track day with it and its been fine....not sure how long ex-owner of the car ran with it.

i also know a few friends who has the same brake setup with the same redrilled rotor with multiple track days and theyre fine

ive never heard of any mishaps from redrilling rotors....

when talking about cracks, wat u should be worried about crossdrilled rotors... cracks tend to appear at the holes... coz this areas take alot of abuse... hell of alot more than the PCD holes.
 

l2s_turbo

1,000 RPM
Senior Member

l2s_turbo

1,000 RPM
Senior Member
Oct 23, 2004
1,068
154
3,163
No worries on the PCD redrilled.. just find the suitable sets of 4 pots that matches back your current rim without hitting or spacers.. that should do.. i've done many 3 brake swaps on 3 of my rides.. Perdana with 4pot GTO, Picanto with RVR brakes and latest Swift with Lexus LS430 4pot brakes.. all with the rotor PCD redrilled. Just bear in mind like wat bro madman said.. do not cross drill the brake rotor.. it'll cause hairline cracks later.. the most i did is slot with 6 slits.. :)
 

munky

1,500 RPM
Senior Member

munky

1,500 RPM
Senior Member
Jul 18, 2004
1,967
20
3,138
PJ
www.playboy.com
ahhh ok. That sounds good. Anyway, normally how much does it costs to make a custom bracket for the brakes if it comes from other models? And what is a reasonable labour charge to change the brakes for? Just the front brakes only on a RWD car (less work right since there's no driveshaft involved?)
 

l2s_turbo

1,000 RPM
Senior Member

l2s_turbo

1,000 RPM
Senior Member
Oct 23, 2004
1,068
154
3,163
ahhh ok. That sounds good. Anyway, normally how much does it costs to make a custom bracket for the brakes if it comes from other models? And what is a reasonable labour charge to change the brakes for? Just the front brakes only on a RWD car (less work right since there's no driveshaft involved?)
Cost of the retro fitting bracket should be from rm200~350 depends on the material you choose and how rigid you want your brackets to be.. whether there is driveshaft or not does not hinder the brake's customization.. :rolleyes:
 

es2611

500 RPM
Senior Member

es2611

500 RPM
Senior Member
Jan 10, 2006
954
175
1,543
hi bro
u could upgrade ur calipers without necessarily upgrade the rotors. perfect example is the spoon calipers on EK9 still using the 282mm rotors.
pls make sure ur brackets are made from cast iron as they are tough.
remember bro, never give a second chance when modifying ur brakes as it might be life threatening. cheers.
 

mADmAN

Senior Member
Senior Member

mADmAN

Senior Member
Senior Member
Aug 5, 2004
1,840
547
3,213
brackets arent cheap... u can also expect to pay around 6xx n above for a pair.
 

es2611

500 RPM
Senior Member

es2611

500 RPM
Senior Member
Jan 10, 2006
954
175
1,543
brackets arent cheap... u can also expect to pay around 6xx n above for a pair.
seconded bro madman here. a good solid bracket usually carved from a solid block.
unless if they are from factory, usually are cast iron.
 

infinity.melvin

SlowPoke
Senior Member

infinity.melvin

SlowPoke
Senior Member
Jul 4, 2006
1,600
153
1,663
kuala lumpur
Cost of the retro fitting bracket should be from rm200~350 depends on the material you choose and how rigid you want your brackets to be.. whether there is driveshaft or not does not hinder the brake's customization.. :rolleyes:
Bro pls tell me where to custom make the good quality bracket? That price is cheap!!

---------- Post added at 09:19 PM ---------- 6 hour anti-bump limit - Previous post was at 09:18 PM ----------

Any place to recommend for bracket fabrication? And what is needed for them to fabricate one? Leaving the car overnight? Or just simple measurement taking will do?
 

DanzEterna

Moderator
Moderator
Senior Member

DanzEterna

Moderator
Moderator
Senior Member
Nov 1, 2007
15,916
3,371
1,713
PJ
www.primeperdanaclub.com
Bro pls tell me where to custom make the good quality bracket? That price is cheap!!

---------- Post added at 09:19 PM ---------- 6 hour anti-bump limit - Previous post was at 09:18 PM ----------

Any place to recommend for bracket fabrication? And what is needed for them to fabricate one? Leaving the car overnight? Or just simple measurement taking will do?
try asking Yee Hau86. he might know.
 

munky

1,500 RPM
Senior Member

munky

1,500 RPM
Senior Member
Jul 18, 2004
1,967
20
3,138
PJ
www.playboy.com
walauweh 600 for brackets?

i also want to know how they make the brackets i.e simple welding or machined from a block of steel, etc
 

l2s_turbo

1,000 RPM
Senior Member

l2s_turbo

1,000 RPM
Senior Member
Oct 23, 2004
1,068
154
3,163
Bro pls tell me where to custom make the good quality bracket? That price is cheap!!

---------- Post added at 09:19 PM ---------- 6 hour anti-bump limit - Previous post was at 09:18 PM ----------

Any place to recommend for bracket fabrication? And what is needed for them to fabricate one? Leaving the car overnight? Or just simple measurement taking will do?
My place is at jb, you live here?
 

mADmAN

Senior Member
Senior Member

mADmAN

Senior Member
Senior Member
Aug 5, 2004
1,840
547
3,213
the brackets need to be strong and be able to hold up to alot of force....and theyre also a critical safety item...

u cant really expect critical safety items that handles alot of force to be cheap
 

l2s_turbo

1,000 RPM
Senior Member

l2s_turbo

1,000 RPM
Senior Member
Oct 23, 2004
1,068
154
3,163
the brackets need to be strong and be able to hold up to alot of force....and theyre also a critical safety item...

u cant really expect critical safety items that handles alot of force to be cheap
bro it also depends the shop whether wanna chop you for that high price or not.. i just did my swift brackets and around rm 350 per pair.. and that's using 1/2inch metal plates machined out.. and thats already thicker than my stock brakes mounting on the car.. i guess if break also the stock will break before my brackets.. haha... or maybe the screw give way.. lol... :rofl::rofl: