supra_si Posted January 9, 2009 Share Posted January 9, 2009 How much force % wise is placed thbrough the back whilst braking, basically having just seen the state of my front pads im wondering if its more to the back than front. also when changing the back pads, do i need a special tool to wind the rear piston back or is it a push type like the front. Quote Link to comment Share on other sites More sharing options...
Scott Posted January 9, 2009 Share Posted January 9, 2009 More stopping power at the front. Thats the reason why the discs and pads are bigger on the front. Think about a bike, if you hammer the rear brake your bike will skid, if you hammer the front it will throw you over the handle bars. The brakes have to be balanced so that a lot more stopping force is at the front to prevent skidding as much as possible. Quote Link to comment Share on other sites More sharing options...
Konrad Posted January 9, 2009 Share Posted January 9, 2009 How much force % wise is placed thbrough the back whilst braking, basically having just seen the state of my front pads im wondering if its more to the back than front. also when changing the back pads, do i need a special tool to wind the rear piston back or is it a push type like the front. Push type like front. AFAIR it's around 20% on rear. Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 9, 2009 Share Posted January 9, 2009 AIUI, the amount of rear braking going on will vary depending on grip conditions, but it should always be significantly less than the work the front is doing. It's important to keep a balance between front/rear brake setups, so this approximate ratio of F:R effort (and I always thought it was more like 60:40 but that's just a guess TBH) is maintained; have you got stock brakes front and rear, or has either end been uprated? Quote Link to comment Share on other sites More sharing options...
supra_si Posted January 9, 2009 Author Share Posted January 9, 2009 yeh i did think about it pal, i was just asking as im wondering why ppl are upgrading their rear brakes more often than their fronts, i did think the front would take more stick Quote Link to comment Share on other sites More sharing options...
Scott Posted January 9, 2009 Share Posted January 9, 2009 yeh i did think about it pal, i was just asking as im wondering why ppl are upgrading their rear brakes more often than their fronts, i did think the front would take more stick Upgrading the rears? Everyone i know upgrades the fronts. Rears aren't AS important but its good to do the rears as well. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 9, 2009 Share Posted January 9, 2009 Some cars have a constantly adjustable proportional brake bias setup, also a lot of vans trucks etc due to weight loading and even old VWs;) Quote Link to comment Share on other sites More sharing options...
supra_si Posted January 9, 2009 Author Share Posted January 9, 2009 aii well im just looking for new discs up fron to be honest, not going to do rears at this time, the vents on the front looked badly corroded, any discs around the 100 pound mark you can recommend? Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 9, 2009 Share Posted January 9, 2009 (edited) Upgrading the rears? Everyone i know upgrades the fronts. Rears aren't AS important but its good to do the rears as well. You can actually decrease the total braking ability by upgrading the fronts alone. I'll see if I can find an excellent post by CW from many years ago that I stumbled across recently... edit here we go, read this. Controversial I know, but people shouldn't mess with "upgrading" their brakes (especially just the front brakes) unless they totally understand what they're doing IMHO. Edited January 9, 2009 by SteveR (see edit history) Quote Link to comment Share on other sites More sharing options...
supra_si Posted January 9, 2009 Author Share Posted January 9, 2009 well really i just want to replace the front discs, ive heard oem ones are best, alreday ive noticed a difference with changing the pads alone but wanted to get new discs on there to complement the pads Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 9, 2009 Share Posted January 9, 2009 If you have drilled/vented disks, and all you're suffering is a bit of corrosion built up, just scrape it out with a screwdriver or allen key. there is no need to replace your brake disks unless they are past their useful life (i.e. the surface is too thin) Quote Link to comment Share on other sites More sharing options...
supra_si Posted January 9, 2009 Author Share Posted January 9, 2009 they are just vented brakes, have seen better days and the edges are flaking off Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 9, 2009 Share Posted January 9, 2009 Fair play. If you've got stock calipers, I'd probably stick with stock disks. Quote Link to comment Share on other sites More sharing options...
Thorin Posted January 9, 2009 Share Posted January 9, 2009 Stock discs definately. Quote Link to comment Share on other sites More sharing options...
Scott Posted January 9, 2009 Share Posted January 9, 2009 You can actually decrease the total braking ability by upgrading the fronts alone. I'll see if I can find an excellent post by CW from many years ago that I stumbled across recently... edit here we go, read this. Controversial I know, but people shouldn't mess with "upgrading" their brakes (especially just the front brakes) unless they totally understand what they're doing IMHO. Makes perfect sense, i didn't read it all though... just the bit on the rear brakes. I was thinking along those lines myself. In my head i had it that the front would lock far too early and the rear brakes would be doing next to nothing. Quote Link to comment Share on other sites More sharing options...
supra_si Posted January 9, 2009 Author Share Posted January 9, 2009 Other than paying through the nose at MrT is there any places that can sell equally good discs for around 100 a pair Quote Link to comment Share on other sites More sharing options...
Thorin Posted January 9, 2009 Share Posted January 9, 2009 Other than paying through the nose at MrT is there any places that can sell equally good discs for around 100 a pair Your local motor factors should have identical blueprint parts, I'm not sure how much they would be though. Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 9, 2009 Share Posted January 9, 2009 Ask: - Nic (although disks are heavy so shipping from Hong Kong might not be worthwhile) - Paul Whiffin and - Steve Manley of Inchscape (sp?) Toyota as he offers a discount for club members (have a search) Quote Link to comment Share on other sites More sharing options...
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