How to: NBS master cylinder swap for firm brake pedal

[Darkrider]

I've noticed, 94+ ABS equipped trucks seem to have the soft pedal problem. I know my 88 (and the other RWAL trucks I've driven) have some of the stiffest pedals on earth. I know my truck has always taken a strong right leg.

I know my k1500 has rwal and I Damn near ate the wheel when I laid into the pedal once lol

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[DRAGGIN95]

Also keep in mind that the NBS hydro unit has a different length and size brake pushrod than the obs does also.

 

[JollyGreen]

Excellent write up on the swap. IMO the only way to get the brakes the way they should have been from the factory is to do the hydroboost swap. Its the best mod you can do for the money hands down. Literally night and day. I think I had $350 in whole thing.

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[DRAGGIN95]

Excellent write up on the swap. IMO the only way to get the brakes the way they should have been from the factory is to do the hydroboost swap. Its the best mod you can do for the money hands down. Literally night and day. I think I had $350 in whole thing.

Sent from my Taliban Killing DROiD

Yes, the hydroboost swap is awesome, it really bring's the brakes to life!

 

[Half Assed]

Excellent write up on the swap. IMO the only way to get the brakes the way they should have been from the factory is to do the hydroboost swap. Its the best mod you can do for the money hands down. Literally night and day. I think I had $350 in whole thing.

Sent from my Taliban Killing DROiD

I think for someone on a low budget, this is a good compromise. The brake reaction time is much faster without the marshmellow brake pedal.

I paid $25 for the MC used.
$3 for the adapter
$6 for DOT 3 fluid
$10 for the bench bleeding kit, which I actually didn't need since my used MC already had fluid in it and was already bled.

But all new parts, this could be accomplished for around $100.

I still want to do the hydro boost and 3/4 ton NBS MC swap though, with 3/4 ton calipers.

 

[TylerZ281500]

just 100 bucks? i was reading the fsc thread and it was saying the bore size was different so machingin was required. im confuzzled now.

 

[bluex]

just 100 bucks? i was reading the fsc thread and it was saying the bore size was different so machingin was required. im confuzzled now.

For hydroboost it is. If you keep your vacuum booster it's a bolt on.

 

[TylerZ281500]

For hydroboost it is. If you keep your vacuum booster it's a bolt on.

ahhh makes sense. any junkyardaholics that can see if the bolt batterns for the brake and hydroboost on a nbs are the same as an obs?

 

[Half Assed]

the firewall bolt pattern for the NBS hydro boost is different than the OBS

 

[TylerZ281500]

So a little machine work to the obs hydro unit and the rest of the hydro stuff and it should be perfect ay