Dave D Glanza V Posted August 9, 2020 Share Posted August 9, 2020 Anyone ever fitted a brake bias valve? I've got ksport 6 pots up front, rear brakes seem to do next to nothing wonderd if it was worth looking into Quote Link to post Share on other sites
Sam44 Posted August 9, 2020 Share Posted August 9, 2020 (edited) the starlet brake conpensater valve is located on the front bulk head, and is pressure related. So yeh the rear brakes see very little effort most of the time, leading to rear brake calipers seizing up and drake discs corroding. I'm running a 2x bias valve setup which keep the safty feature of the standard 1x master cylinder cross linked Toyota brake setup, and allow me to adjust front to rear bias. Once you get used to the setup the benefits are to be found everywhere. Mainly from what I read on these a little thing called lift off oversteer, and fast corner braking allowing the rear brakes better control. This is happening because of the fact the rear brakes are seeing near no braking effort out of factory. Edited August 9, 2020 by Sam44 Quote Link to post Share on other sites
jellybaby Posted January 2, 2021 Share Posted January 2, 2021 On 8/9/2020 at 11:50 AM, Sam44 said: the starlet brake conpensater valve is located on the front bulk head, and is pressure related. So yeh the rear brakes see very little effort most of the time, leading to rear brake calipers seizing up and drake discs corroding. I'm running a 2x bias valve setup which keep the safty feature of the standard 1x master cylinder cross linked Toyota brake setup, and allow me to adjust front to rear bias. Once you get used to the setup the benefits are to be found everywhere. Mainly from what I read on these a little thing called lift off oversteer, and fast corner braking allowing the rear brakes better control. This is happening because of the fact the rear brakes are seeing near no braking effort out of factory. Got any pics of ya set up dude Quote Link to post Share on other sites
Sam44 Posted January 2, 2021 Share Posted January 2, 2021 (edited) i have but there on my tablet in the uk at present. im not with it i basically placed 2x level type staged bias vales in the 2 brake lines that the starlet has. 1 lines does left front and rear right the other operates right front rear left. ive removed the factory pressure referance valve and routed it threw 2x bias valves that ive joined together so it becomes 1 lever in affect. the lever type valves are designed to be bolted together ive just joined the handles as well by drilling and bolting them together. im hoping to get back at the end of the month. ill get you some pics then. once you introduce trail braking on these it becomes a game changer. becarfull if your using brum bakes like me they overheat fast. Painted drums will set on 🔥. Edited January 3, 2021 by Sam44 Quote Link to post Share on other sites
jellybaby Posted January 3, 2021 Share Posted January 3, 2021 I have glanza with discs so shouldn’t overheat but nice concept ya doing Quote Link to post Share on other sites
Sam44 Posted January 3, 2021 Share Posted January 3, 2021 (edited) 10 hours ago, jellybaby said: I have glanza with discs so shouldn’t overheat but nice concept ya doing Thanks I'm just fine tunning things at present to a comfortable everyday driveable state. You will get a feel for the settings of the brake bias valve mainly in stop and start traffic to much rear causes the car to stop dead on light braking. The brake peddle on these is also adjustable to remove the dead zone. Becarful here adjust this 15deg at a time. To much will bring the brakes on. You will need a little dead zone to allow for heat expantion. Using top grade brake fluid helps again. Great shop. I've been buying off them along time. https://www.mcgillmotorsport.com/adjustable-brake-proportion-valve-lever-type-c-70-p-361 Edited January 4, 2021 by Sam44 Quote Link to post Share on other sites
jellybaby Posted January 4, 2021 Share Posted January 4, 2021 11 hours ago, Sam44 said: Thanks I'm just fine tunning things at present to a comfortable everyday driveable state. You will get a feel for the settings of the brake bias valve mainly in stop and start traffic to much rear causes the car to stop dead on light braking. The brake peddle on these is also adjustable to remove the dead zone. Becarful here adjust this 15deg at a time. To much will bring the brakes on. You will need a little dead zone to allow for heat expantion. Using top grade brake fluid helps again. Great shop. I've been buying off them along time. https://www.mcgillmotorsport.com/adjustable-brake-proportion-valve-lever-type-c-70-p-361 Unfortunately no chance of me road testing mine atm it got iy throat cut and waiting on turbo kit Quote Link to post Share on other sites
Sam44 Posted January 4, 2021 Share Posted January 4, 2021 I'm looking forward to see progress on your build. Take your time, it will soon be 2022. I really enjoy yours and other work on these. Quote Link to post Share on other sites
jellybaby Posted January 4, 2021 Share Posted January 4, 2021 7 hours ago, Sam44 said: I'm looking forward to see progress on your build. Take your time, it will soon be 2022. I really enjoy yours and other work on these. Cheers feller I know a lot about these cars but kinder keep it to my self and just help people that I respect and that’s turned in to 6 I look after now Quote Link to post Share on other sites
Sam44 Posted January 4, 2021 Share Posted January 4, 2021 (edited) Yeh I'm starting to understand forum's now (I was warned). I've been doing this along time but my first go on these little machines after 1 beat us at brands hatch. This is my first turboed n/a. Message me the others you work on I'd like to check them out. Edited January 4, 2021 by Sam44 Quote Link to post Share on other sites
POPG081 Posted February 20, 2022 Share Posted February 20, 2022 On 8/9/2020 at 6:07 PM, Dave D Glanza V said: Anyone ever fitted a brake bias valve? I've got ksport 6 pots up front, rear brakes seem to do next to nothing wonderd if it was worth looking into I did it. I am using AT210 2pod caliper on front. Rear is EP82 turbo genuine caliper. I installed bias valve of willwood. You need to create some part of brake line. Quote Link to post Share on other sites
Sam44 Posted February 23, 2022 Share Posted February 23, 2022 Yeh how are you liking it. Trail braking. Sits that ass end down. Quote Link to post Share on other sites
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