Non-ABS Proportioning Valve
 

If anyone can tell me what kind of proportioning valve to use to get rid of my abs in my turbo 88 supra that would be great. I cant seem to find what i need. Im not even sure if i can just use whatever valve i want as long as its not abs

Iv been told by older racers that on the track that you can get better breaking by using threshold breaking instead of a factory abs but why would you like to get rid of it for. I like being able to slam the breaks in an emergency and not worry about them locking up. Is this gona be a track car because other than that I can't see why you'd want to get rid of abs

im making room in the engine bay and would also like to get rid of the clutter. my engine is out right now so i can remove all the lines that are connected to the firewall with ease. Yeah abs is nice but all of our parents and grandparents got along fine when they had their first cars and didnt have abs.

still looking for an answer

Just pull/order the components from a non-ABS MKIII... it'll be easier, should you need it, to repair in the future. Otherwise get an adjustable proportioning valve and tune it for the proper bias.

I agree that it's a crap idea. I've known only one person who tried this in the past because: dedicated DRIFTO! mobile. Tossing out the quicker stopping times and greatly improved breaking ability on low traction surfaces is a waste. Yes, my grandfather got by without it as well, but the minute it came out he couldn't bad mouth non-ABS vehicles enough... I'd never hear the end of it when he got in one of my old cars with me. The argument that just because prehistoric man hunted with sharpened sticks so should we is pretty ass backward. Smoke signals < telephone < pager < email < cell phone I can see no way in which going backward in this timeline is BETTER either. Hell the thing people like to bitch about the most, emissions controls, has advanced to the point that they all offer significant benefits now: better mileage, gas actually stays in your fuel tank versus evaporating out through the gas cap, PCV helps prevent oil contamination and caustic elements from attacking the bottom end, EGR give us greatly reduced cylinder temps raising the ceiling on just how much we can wring out of the engine.... and so on.

So, to anyone who's "one of those" on here... fine, your car, your dollar and your life.. I don't want anyone preaching it like gospel (I know you're not Icey... Just trying to stay ahead of the flood of this stuff which tends to come this time of year, every year).

ok well thanks for honesty. Its better than someone just saying its a bad idea and thats it. ill have to call around to some junk yards or something i guess.

speaking of abs did the mk4 come whith a 4 chanel abs or 3 just like the mk3 and if so has anyone ever tried puting a 4 chanel into a mk3 sucesfuly. sorry for not responding iv been in ecuador and the internet not so good in my good ol 3rd world country

Anytime Icey! I LOVE giving my opinion. :bigthumb:

I wouldn't be surprised if the MKIV either started with 3 channel and later models came with 4 channel or has 4 channel from the start. IF I recall correctly, the MR-2 had 3 channel until '95 or so and then graduated to 4 channel. You might ask Phil in the MKIV section, check out the FAQ there first.

ok ill check the mk4 faq's if not there ill try to ask phil

The MK4 TT definitely started with 4-channel ABS since '93.5 (i.e. its first model year).

You may these references interesting/useful:
http://www.mkiv.com/specifications/ncf/ncf93/
http://www.mkiv.com/specifications/ncf/ncf93/ncf171.jpg
http://www.mkiv.com/specifications/ncf/ncf97/
http://www.mkiv.com/specifications/ncf/ncf97/ncf030.jpg

well now i know it came whith it but would that system be compatible whith the mk3, i would imagin the mk4 came whith bigger brakes so im gussing the biyasis would be off and it wouldent work properly right?

My guess is that it would work fine as long as you could adapt the electrical signals (control/sensor). I believe the front and rear calipers were both larger in the mk4, so the proportion is likely still quite close. Worst case, you could install a brake bias adjuster like this one:
http://www.wilwood.com/MasterCylinders/MasterCylinderProd.aspx?itemno=260-10922
...of course, you could always take it a step further, and upgrade the MKIII with MKIV calipers&rotors too!

so it could be done. that would be an awsome set up not to mention expensive lol

Expensive? Really? Everything is relative:
http://www.stillen.com/product.asp?i...TA&model=SUPRA

ROFL! These are MKIII owners Phil. EVERYTHING is expensive. I had a guy try to haggle me down to a dollar a piece on a new set of NGK Iridiums plus $20 for install. :rofl2: Not trying to offend all of you.... You're not all like that... Just most.

what i mean was expensive was the mk4 rotors and calipers and abs and aditonal hardware needed, the willwood piepce not really

theres so much truth to that i dont know where to start lol

If you're saying you couldn't find a set of used MK4 TT calipers for a fourth or less than the cost of a good aftermarket Brembo, StopTech or AP Racing calipers, then I'm a monkey's uncle. From that perspective, MK4 calipers are CHEAP, and not expensive - wouldn't you agree?

Note: You were going to do the abs unit conversion even if you stayed with MK3 calipers, so that's not part of the comparison, imo.

yes this is true and i do agree , but im a high school kid whith not alot of income so even 300$ is quite a bit for me. thats why i ask what would be needed so i can collect piece by piece over time and hopefully some day have a bad asss mk3 whith 4 channel abs

staying whith mk3 calipers i imagined i would have to find a used abs module from a mk4 and i really dont know how much thoes are running for now adays

Here's another couple of reasons that there's no way in the world you can call $300 "expensive":
http://autos.aol.com/cars-Lamborghin...-2012/pricing/
http://www.carbuzz.com/Koenigsegg/20...gsegg_Agera-R/

This is a high performance and modification forum. Sorry to be so blunt, - just 'keepin it real' - but the world of high performance and modification is NOT an inexpensive hobby. If you're looking for a cheap (i.e. not "expensive") hobby, then maybe you should take up power walking? *shrug* If you really want to actively participate in the world of high performance modification, then either take up a second job, or maybe just wait until you've graduated from your schooling before you start upgrading your MK3. I honestly don't mean to be insulting, but for the money, if you REALLY want to upgrade the performance of the braking system on your MK3, then get the used MK4 parts - all of them, including the used MK4 TT ABS valve body, ABS ecu, calipers (etc.) and brand-new MK4 TT rotors - and do the upgrade right. For the money, I promise you that you won't find any better braking system upgrade.

Please keep us informed, and let us know if there's any additional information that we can provide to help you out.

i understand these cars arent cheap. im not a cheap person im just frugal. the way i have always upgraded my cars and bikes was save enough to get everything ill need then install . since im buying used parts i can take my time and collect the best of used and amek shure i have EVERYTHING ill need ( if that makes any sence), i know i wont have all the parts for a bit but i like having the information ready so when i do get the parts so i dont have to wounder " would this work"

i know this is the best brake upgrade i agree whith that compleatly