sevenin7

Hi guys
I have in my hands the Hurst roll control system for my FD with the installation instructions catalog 1745000 .
In this catalog there is 5 different systems ( diagramms ) for different applications ! The FD as i know use dual master cylinder brake system . Correct ?

Who runs with Hurst line lock to help me ?

andrewb70

I don't know about FDs, but on an FC I had to install two solinoids.

Andrew

sevenin7

Thanks , andrew

Some other guy with FD ? who runs Hurst roll-control .

scathcart

I can tell you, but it depends on:
Do you have ABS?

Indian

iTrader: (1)

need this same info too.

sevenin7

Yes , i have . Its necessary to removed all the ABS system ?

sevenin7

Hey guys......
Somebody esle who runs with Hurst roll-control ??
Its necessary to removed the ABS , or not ?
Who knows which system ( from the installation instructions catalog " 1745000 ) is the correct for FD's ?

LUPE

Why not just remove your abs? You always talk about drag racing so just get rid of the ABS.

sevenin7

Lupe
Do you used Hurst in yours blue FD ?

LUPE

I have one now...... just the basic lineloc/one solenoid.

I removed my ABS 3 years ago, though.

sevenin7

Do you have the diagramm for the correct installation for our cars ?

LUPE

Not much of a diagram, it just runs inline with the brake line to the front brakes.

Indian

iTrader: (1)

BRILLANT!!!!

scathcart

Geez, relax guy. Gimme a day to respond.

Linelock *won't* work with ABS... ABS works by sensing different wheel speeds. So, if the rears are moving, and the fronts are not, ABS figures the front wheels have locked up, and attempts to reduce the line pressure to the front wheels, which would negate the purpose of linelock.

Now, that being said, you can just co ahead and plumb around the ABS system and just **** it off. To do this, you would need to plumb AFTER the ABS solenoids... this means two lines (front left and front right) need to be clamped separately.
Normally, with linelock, systems like this are a pain, and you either need to run some tee fittings, or buy two linelocks...

But you have a hurst.
Hurst is nice since it can individually clamp down on two lines without allowing them to exchange fluid.
So, what you would do is:
Take the lines coming from the ABS solenoid going to each front brake, and cut them, and put the linelock inline with both of them, making sure you don't cross your lines... this means left tire front goes on the top two holes, and right front tire goes on the bottom two holes, or vice versa.

Now, this willw ork for roll control purposes... but when you use the system, the ABS light will come on when you do your burnout/launch, and the ABS system should remain inactive until you reset it (by restarting the car). This means no ABS on the decel/turn around.

If you decide to remove ABS (this is a drag only car}, then you would take the single line going to the front brakes from the master cylinder and plumb the linelock inline with it, then run into a tee fitting leading to both front brakes. You would only use one pair of holes on the linelock in this case, either the top two or the bottom two, and then you would plug the unused holes.



If this is primarily going to be used for burnouts, leave the system at that. If you want to actually make the unit useful, also consider buying a brake fluid pressure gauge. You'd be amazed how well a pressure gauge+ linelock can make your standard tranny launches very fast and very consistent.

Any more questions, lemme know.

scathcart

The hurst instructions are a little more confusing than other brands. Since it is dual port, it gives instructions for several different types of braking systems, and are overall very confusing if you don't really know how linelock/your brakes work.

I don't normally say this, but when it comes to brakes, and you have to ask, seek professional help.
Installing this system will require making several cuts, bends, and flares to the brakes lines, and inexperience in this area can lead to brake failure... which can cause injury to others and yourself.
When it comes to brakes, there's no margin for error. Safest bet will be do go get it installed at a speedshop, and hopefully they'll let you watch and talk you through the install so you have an idea for future work.