ABS Brake System on a e21 ???? Is this posible????

Bempie21 · Post by **Bempie21** » Tue May 26, 2009 12:04 pm

Hello Guys???

Who can give me a good advise????
Because, I want to put a ABS Brake System on my E21 in the future..
My Question is? Is this posible??? So that i can take all off the system from an e30 en put together in the e21.
is there someone who tried to do this???

jagclarke · Post by **jagclarke** » Tue May 26, 2009 12:30 pm

why lol it just increases ur braking distance. just pump brakes with ur foot if u want abs, its just anouther unessary weight adding system to go wrong so that fools can drive cars without killing them selfs as often.

Madhatter · Post by **Madhatter** » Tue May 26, 2009 2:44 pm

it wont increase it, not for the average person. Unless you are good at threshold braking, abs will shorten the stopping distance, its just a case of slam the pedal down and away you go. Its ofcourse a safety thing too, given you wont have a lockup.

Only thing I think you would have a problem with is finding somewhere to mount the wheel sensors, plus the disc it actually reads when it rotates.

Jason_323i · Post by **Jason_323i** » Tue May 26, 2009 3:31 pm

the easy way would be top swap the complete suspension from and e30 and the abs gear.

Mounting the abs toothed wheel and sensors on e21 hubs pretty tricky

Jason

wicked · Post by **wicked** » Tue May 26, 2009 3:59 pm

Concering the wheel-sensors, you could use E24 or E28 wheel-hubs and weld on a sensor-mount to the strunds.
I don't think you will have to use an E30 ABS-block (others will do aswell).

You migt also need to change the master brake cilinder (not sure).

When you come to me this week, we will figur it out with some ABS stuff i have in my garage

Jeroen

Bempie21 · Post by **Bempie21** » Tue May 26, 2009 5:18 pm

The problem is, i've upgrade my brakediscs and pads. All are new.
Just the Orginal 323i but the better stuff..

Discs works pretty good but not so much that i expected.

My experiance is: Engine is too fast, and the brakes are too soft for the car to stop it. What kind of options do i have to make the brakes better.

Cerberus · Post by **Cerberus** » Tue May 26, 2009 7:26 pm

not much that won't cost a fortune

cheaper options are

a parachute
transfer as much weight as possible to the rear
enormous tires

but most important is watching ahead and anticipating in traffic

wicked · Post by **wicked** » Tue May 26, 2009 7:58 pm

Volvo 4piston callipers will do a great deal. A bigger master cilinder and steel-flex hoses Will improve the braking-power

Greetz
Jeroen

ac/dennis · Post by **ac/dennis** » Tue May 26, 2009 8:51 pm

Theres a post ont his forum somewhere, late E21's in I beleive the US were equiped with ABS.

If you want better braking, indeed the volvo 4pots are a good upgrade. Also the Brembo's from Alfa GTV 6

Bempie21 · Post by **Bempie21** » Tue May 26, 2009 9:06 pm

When i got the volvo 4 pots, can i use also the same discs what i have???

ac/dennis · Post by **ac/dennis** » Tue May 26, 2009 9:45 pm

Think you need the 323i brakes,
Do a search on the forum, I think there s a post on it somewhere

eta · Post by **eta** » Mon Jun 01, 2009 11:59 pm

As was said above, look ahead, anticipate and do not drive as fast. I do not have ABS on my E28 525e, it is the first car I have had without ABS. Initally I was worried about that as it is my daily driver but now I would never retrofit the system. Now I have done the e to i conversion and fitted and manual box, and shorter diff I still won't be doing a brake upgrade simply because while driving at sensible speeds the stock brakes are nore than adaquate.

If your brakes are too soft you have something wrong with your braking system or you just need calipers that can deliver higher braking torque. Fitting ABS will not do the latter it will just pulse the brakes preventing them locking up completley. Braking distance may therefore be a bit shorter than properly modulated stock brakes.

Remember you only need improved brakes if the speed you are braking from is higher, if you use you engine to take to legal speeds just quicker then the stocks brakes will be jsut fine.

340i · Post by **340i** » Sat Jun 06, 2009 6:47 pm

what a load of crap advice. i dont think this guy wants to drive slower to solve his braking inadequacies.

upgrade the front disks to larger diameter ones, and get some alloy 4 pot callipers (eg volvo, or theres plenty of other brands which make decent callipers, ie nissan 200sx/skyline, porsche - brembos, mazda rx7, etc...)

search this forum, there are plenty of brake upgrade threads with details.

340i · Post by **340i** » Sat Jun 06, 2009 6:49 pm

sorry, this bit is good.

eta wrote:
If your brakes are too soft you have something wrong with your braking system or you just need calipers that can deliver higher braking torque. Fitting ABS will not do the latter it will just pulse the brakes preventing them locking up completley. Braking distance may therefore be a bit shorter than properly modulated stock brakes.

.

jirky · Post by **jirky** » Sat Jun 06, 2009 6:57 pm

http://www.massivebrakes.com/kits/e21/

Got the site from there forum here, don't know the topic anymore

Maybe this is a solution..

Grtz

jirky