What do I have to do convert my brakes to manual so I can lose that giant booster thing? Do I need a different master cylinder? Anyone have any ideas?

 

fyi it already has 4 wheel ls1 brakes.. i just want to convert it to manual.. where there any thirdgens with manual brakes? can i just buy a manual master cyl and call it good?

 

Dude.....Nooooooooooo

 

why not?

 

1. It is way more difficult to stop a car with out vacuum assist.
2. That would never pass inspection.
3. I would never want you to be driving behind me.

 

I can think of one reason why: you have a fairly large brakes setup on the car meaning your gonna need a lot more pressure to make it work effectively. Plus how much weight do you think your gonna by taking the Vac assist off? 3, mabe 4 pounds? whoop de do and it the meantime you have made your car into a death trap.

 

There'd be nothing unsafe about a properly done manual setup. And the LS1 calipers would work just fine.

To do the job right, you'd need to change to a non-quick take up MC, and possibly either reduce the MC bore diameter or increase pedal ratio to bring the pedal effort back to a level you're comfortable with. A manual setup will require a longer pedal stroke to achieve the same pedal effort.

Now, if what I just wrote wasn't already obvious to you, you may not have a good understanding of the fundamentals involved. I'd strongly suggest you read and understand Fred Puhn's brake book before proceeding. (FWIW, I prefer the vac assist setup )

 

ya you can make it work but why? what will 3 or 4 pounds affect? there are many places you could loose more easier and safer.

 

Um, no.

More caliper piston area = less hydraulic pressure, to achieve a given piston (pad) force.

Larger rotor diameter = longer lever arm = less pad force required to achieve the same rotor torque.

 

If you don't mind the longer pedal stroke (or increased pedal effort; they're a tradeoff), there's nothing more reliable than a full manual setup.

Try stopping a power brake car with a booster failure sometime.

I haven't seen anyone wreck, but I have seen a couple of guys lose track days due to failed power boosters, when they didn't have a spare available.

 

cam is going to be way to big to even help the vaccuum assist, thats my main reason. and to get that giant ugly looking booster out of the engine compartment.