Paranoid_Flake

Hello everyone, Since I own my supra (now 3 years) I have issues passing APK (Dutch MOT :)), due to an imbalance between rear left and rear right brakes. The difference is not consistent, it changes about 0.3 kN RL 0.6 kN RR to 0.4/0.7 kN, etc, etc. In the past years I did pass, but it was all luck. Handbrake results are around 2.2/2,5 kN braking force, which is a LOT higher. Front brakes results are around 4.3/4.5 kN braking force, which is over 10 times more than the rears. What I tried Refurbished all brake calipers (OEM refurbish kit), and painted them nicely :). So no stuck piston (mine weren't even rusty at all) Replaced flexible brake lines with braided ones (goodridge). Pressurized brake bleeding (according manual). Tested flow during pressurized bleeding. ABS pump bypassed with T-fitting and brake hose -> resulted in 0.32kN rear left and 0.32kN rear right so balance OK but passing MOT without ABS was an issue, so send ABS pump away for inspection -> came out clean (all ports flow OK, no stuck solenoids). Tested with ABS pump, but disconnected connectors (Also measured ABS pump solenoids, sense resistors and coils). Pressure bleeded 5 or more times :S. Still no luck I also searched the forums and internet, but cant seem to find anyone with similar issues (diff between rear left and rear right). At this point I'm running out of idea's and starting to really dislike brake fluid.. The only thing I can think of is a bad proportioning valve in the master cylinder due to the poor braking performance in the rear (over 10 times less). According to the manual the difference should be about 67% front 33% rear bias (apart from total piston area). Before spending cash on just buying new parts I could use some directions & help. Any help is welcome, thanks. Car: Toyota Supra RZ-S 2001 JDM - twin turbo.

What route did you take? 8HP70 or DCT? And what diff did you use? With stock auto diff i can imagine the first gears are short and do not put enough load on the engine to get the turbos to spool up fast. Last august I bought an Supra RZ-S with an auto box, at this point i'm doing some research which route to take :D. Btw you have any vids of your conversion?

Any updates?

Nice progress! Curious how this project turns out, especially the noise of a 2JZ with ITB's ^^

Nice upgrade! That manifold collector looks machined from a solid block?

Great thread, love how you modify the interior and still keeping the OEM look!

Interesting route! I'm really curious how this works out

Welcome, Is that a RX7 in the back of the 2nd picture? Nice clean supra!

done

Welcome! Any pics and specs of the TT manual?

God I love those OEM-ish supra's

Welcome! Nice car! Is it auto or manual?

"Flag as spammer" :] Thanks, yeah my girlfriend got me a Supra RZ But it's getting time for a real one! I saw these ads and wonder if they are any good, because they look great. http://www.performancecarcompany.com/stock/car16/index.htm and http://www.sennsports.co.uk/vehicle/230/1996_TOYOTA_SUPRA_TT_6_SPEED

How are the oil lines orientated? Too much oil pressure maybe?

Exciting thread to follow! Short question, is the back-pressure vs inlet-pressure ratio going to be measured?

While browsing through some supra vids on youtube i came across this, beware of the horror content. Poor supra, guess this is what happens when your car gets stolen

Nice work! This style exhaust manifold is good for fast response if im not wrong. I wonder what power it will put to the ground .

Al least it is not a 20 m2 garage which you find often under apartments! You seem to have enough space to work properly on your car

That's true although I spotted a supra only once :/ (and a few on events).

Hello everyone! I'm Laurens, 25 years old and from the Netherlands. A few years ago i stumbled across this great community forum. I have a great passion for supra's and lover everything about the car; the engine, looks and power is just awesome . I have been reading a lot of topics here for quite some time and I have to say i'm quite impressed with the size and dedication of this forum. Although i have been reading a lot here, I have never introduced myself, guess I'm not the talky guy on forums . Goals; getting a clean(oem body) Supra TT 6spd this summer Cheers guys!