2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Difference between ABS and noabs Proportion valve

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Old May 17, 2006 | 02:05 PM
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Difference between ABS and noabs Proportion valve

Hi

Is there a difference between the ABS proportion bypass alve and the nonABS valve?

If not, can someone make a quick drawing of the brake system
(yes i have looked in the manual)

Sindre
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Old May 17, 2006 | 02:20 PM
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BTW; Why do i have two brakelines to the rear? In the FSM its only 1
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Old May 17, 2006 | 03:04 PM
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Two rear brake lines - interesting..
Mine is A-spec and only has one rear brake line.
I removed my ABS a year ago and kept the proportioning valve the same.
If you punch the brakes, the fronts will skid.
If you press them to allow the weight to transfer to the fronts, breaking is even.
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Old May 18, 2006 | 02:53 AM
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I got a Jspec and im almoste 100% that those lines are brake lines. It is 4 lines from the engine bay to the rear of the car (fuel, fuel-retur, and 2 brake lines).

Sindre
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Old May 18, 2006 | 06:03 AM
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Originally Posted by Sindregutt
I got a Jspec and im almoste 100% that those lines are brake lines. It is 4 lines from the engine bay to the rear of the car (fuel, fuel-retur, and 2 brake lines).

Sindre
Nono, one is for fuel in, one is for fuel return, one is for brake lines, and 1 goes to the 3-way check valve at the rear (catchs fuel when the car turns off) - Follow that line -- it leads to the charchol canister.
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Old May 18, 2006 | 03:29 PM
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yeah, i did some better "looking" today.. I also rebuilt the brake system with new lines, hoses and master brake cylinder.. The pedal feels mutch better than when i had the sucky sucky ABS connected!
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