Brake System Question!!

[1SicDsm]

Hey there everyone, Just a quick question i am in the middle of a gsx brake upgrade to my GST i got new brembo slotted drilled rotors, metalmaster pads, and SS lines for the front. For the back I was wanna go with the stock lines and just resurface my rotors and metal master pads, but a buddy of mine who has built 10 sec cars JDM's says I should also buy SS lines for the back and new brembo rotors like the front he says if I dont my cars ganna lean forward a whole lot when i brake because my front are going to be better than the back. Is that true should I follow his advice or stick with my original Plan, This is also coming from a guy that Buys everything Brand name if its a bolt it has to be an EAM bolt or else it doesnt work

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[DSMunknown]

Hey there everyone, Just a quick question i am in the middle of a gsx brake upgrade to my GST i got new brembo slotted drilled rotors, metalmaster pads, and SS lines for the front. For the back I was wanna go with the stock lines and just resurface my rotors and metal master pads, but a buddy of mine who has built 10 sec cars JDM's says I should also buy SS lines for the back and new brembo rotors like the front he says if I dont my cars ganna lean forward a whole lot when i brake because my front are going to be better than the back. Is that true should I follow his advice or stick with my original Plan, This is also coming from a guy that Buys everything Brand name if its a bolt it has to be an EAM bolt or else it doesnt work

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You don't need to upgrade the rear rotors. Unless your car is going to see constant track use or you're driving a high-horsepower DSM, it is completely unnecessary. Just uprade all of the brake lines to SS and perhaps upgrade to higher performing brake fluid. Properly bleed the brakes and you should be golden. Remember, the front brakes do somewhere around 90% of the work anyways - upgrading the rear won't net you hardly any additional results.

 

[snowborder714]

Well, if you got the adapted lines from RRE (as stated in the other post), then those lines will replace the fronts and rears. There should be 4 lines in the kit and one lines will be for each caliper. Just match up the lengths to the stock ones.

As for the rotors, I personally opted to get 4 new rotors (and matching pads to go with them). I can't give you a definite answer but unless you know the last time the rotors were replaced and know that they're in good condition, I'd just get new ones for the back as well (along with new pads). This way they will wear evenly and will also look great under those nice rims!

The choice is up to you (and I don't know how much it'd cost to get rotors resurfaced so I can't compare that to price of a new rotor) but I would recommend to get new ones. If you're upgrading everything else (lines, front calipers, front rotors, front pads), why not?? Do it right and do it once.

 

[fourreGsixty3]

Upgrade the rear lines to SS as well, because those rubber lines will have more give then the SS ones. As for your rear rotor's make sure they will be within spec. if they are then resurface them...if they are really close to being at the minimum spec. or out of spec. replace them.

 

[wret]

As for your rear rotor's make sure they will be within spec. if they are then resurface them...

Why?

I should also buy SS lines for the back and new brembo rotors like the front he says if I dont my cars ganna lean forward a whole lot when i brake because my front are going to be better than the back.

Buy new rear rotors only if you need new rotors. They won't improve your braking. Replacing the lines with SS will take some of the flex out or the system and firm up the pedal feel. Replacing all four will take out more flex than just two.

In general, upgrading the front brakes is safer than the rear. Too much rear bias can make the car unstable during hard braking, but for optimum performance the rears should not be ignored.

 

[DiamondStarAwd]

New rotors are only 50 bucks for two from autozone.

 

[Raph]

They cost even less .... buy new rear rotors and call it a day..

 

[daren_p]

Like has been said most of the brakeing is done by the front brakes so you aren't going to run into any issues if you don't upgrade the rear or you won't see huge improvements by upgradeing the rear. I would however replace the rear lines with SS braided. I don't believe our master cylinder is divided so keeping the stock rubber lines kinda defeats the purpose of upgrading the fronts (the improvement won't be as great with just the fronts). If everything for the rear is in spec & you don't want to spend the money at the current time, I'd just run what you have till they need replaceing. Then at that time upgrade if you'd like.

To compare last year I ran a factory rear setup (SS lines all around) & had an upgraded Wilwood big brake kit on the front. These defently out stop the factory setups & I didn't have any issues becasue my backs were stock. My back setup was getting close to needing new pads so for this year I got some Powerslot rotors & Hawk HPS pads. It may break abit better now that everything is better balanced but to tell you the truth, if it is different its not enough difference for me to really notice.

 

[fourreGsixty3]

Why?

Buy new rear rotors only if you need new rotors. They won't improve your braking. Replacing the lines with SS will take some of the flex out or the system and firm up the pedal feel. Replacing all four will take out more flex than just two.

In general, upgrading the front brakes is safer than the rear. Too much rear bias can make the car unstable during hard braking, but for optimum performance the rears should not be ignored.

I don't get why you asked me "why?"? Is it cause I said to make sure they are within spec. or if they are resurface them?

1) If they are TOO thin for OEM spec. then replace them because it will be easier for them to heat up, and warp. This is due to too little material.

2) Why resrface them if they are within spec.? Only do this if they need it, if they are fine then don't worry about it.

Dustin

 

[1SicDsm]

Thanks guys, just got a taste of what dsm is all about got bloody nuckles and just finishing up the upgrade i ended up going with ss lines all around and resurface rotors, i just cant get the darn back rotors off they seem to be bolted on or something im ganna do a little searching see if i can find out how to get them off.

 

[wret]

I don't get why you asked me "why?"
2) Why resrface them if they are within spec.? Only do this if they need it, if they are fine then don't worry about it.

Why resuface them if the are in spec? It won't improve performance and may hurt it. There is little reason to resurface rotors ever. The service is often pushed by brake shops to a pad the bill. If the rotors are pulsing due to uneven wear from excessive runout, resurfacing them is a temporary fix.

 

[daren_p]

Thanks guys, just got a taste of what dsm is all about got bloody nuckles and just finishing up the upgrade i ended up going with ss lines all around and resurface rotors, i just cant get the darn back rotors off they seem to be bolted on or something im ganna do a little searching see if i can find out how to get them off.

If your rear rotors are stock there should be 2 threaded holes around the bolt pattern area. Screwing in a couple bolts in this area will break them free. If there aftermarket without the holes you can always give the drum parking brake section a few good wacks on the side to break them lose. You can also smack it on the back side of the disk but this isn't the best idea if you plan on still using the rotors.

 

[fourreGsixty3]

Why resuface them if the are in spec? It won't improve performance and may hurt it. There is little reason to resurface rotors ever. The service is often pushed by brake shops to a pad the bill. If the rotors are pulsing due to uneven wear from excessive runout, resurfacing them is a temporary fix.

I said to resurface them only if they need it. Perhap's I should have said if they are guaged or tapered. If they have uneven wear then yes its a temporary fix, because what ever made them uneven will do it to the resurfaced ones as well soon enough.

Sorry for not explaining myself further, and more clearly on my statement.

Dustin

 

[1SicDsm]

ALL DONE!!!! Finished right before the weekend Man I LOVE the stopping power so much better than stock i had to buy new rear rotors for the back

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[snowborder714]

Looks really good!!

I'm in the middle of the same project (got everything off today) and can't wait to experience the new setup!!