Brake booster swap (1 Viewer)

[cruiser guy]

Hey guys I have been searching hard the last couple of days for a answer to this question with no luck. I am buying a sky manufacturing 1 ton master cylinder with adapter to Toyota. I have read that you should run a fj80 booster behind it. My question is what is the difference between that one and a 60 series one and is it a bolt up deal? I guess I need to be schooled on brake boosters. Any help would be tremendous. Thank you!

 

[maxamillion2345]

dual diaphragm 80 booster

I think t100 and 4runner boosters will bolt up the same as well

FWIW I had troubles with the 1 5/16 master -- too big, ended up using a 92 w250 master 1 1/8 perfect for my 3/4 ton chevy calipers and 14 bolt drum brakes.

 

[GLTHFJ60]

Why dont you run hydroboost with that cummins @cruiser guy ?

 

[Tapage]

another vote for too big MC .. I try all from 1 1/4 to 1" ended with 1" S13W calipers front and rear single piston GM

 

[cruiser guy]

To remove the lock cylinder itself you need the key turned to the "ACC" position. There is a small button on the perimeter of the portion that stays in the truck that you need to push in and then the lock cylinder should slide out.

I can't find a 4bt power steering pump set up and the 2nd gen 5.9 ones are too long and are designed for a p pump and I believe will hit my bracket hold my ve pump on

 

[cruiser guy]

Good to know thanks guys!

 

[maxamillion2345]

Mines a VE pump, same vacuum and PS pump as a p pump engine.

 

[cruiser guy]

Mines a VE pump, same vacuum and PS pump as a p pump engine.

The hydro assist brake setup fits no issues??

 

[GLTHFJ60]

The hydroboost brake booster is independent of the power steering pump.

You have a power steering pump on your motor, right? Instead of rigging up a vacuum pump, plumb the pressure outlet of the power steering pump to the hydroboost unit. The hydroboost unit has a low pressure return and a high pressure outlet. The low pressure return goes to the PS reservoir and the high pressure outlet goes to your steering box. Finally the steering box low pressure return also goes to your PS reservoir.

 

[cruiser guy]

The hydroboost brake booster is independent of the power steering pump.

You have a power steering pump on your motor, right? Instead of rigging up a vacuum pump, plumb the pressure outlet of the power steering pump to the hydroboost unit. The hydroboost unit has a low pressure return and a high pressure outlet. The low pressure return goes to the PS reservoir and the high pressure outlet goes to your steering box. Finally the steering box low pressure return also goes to your PS reservoir.

So I don't need a PS pump with 3 lines on it then? Sorry never have messed with this stuff so its all new to me (all my diesels have ran a vacuum pump that's why)

 

[GLTHFJ60]

So I don't need a PS pump with 3 lines on it then? Sorry never have messed with this stuff so its all new to me (all my diesels have ran a vacuum pump that's why)

The PS reservoir should have two returns in a hydroboost setup, yes. However, depending on the style reservoir you have now, it can be accomodated, or the reservoir on the Saginaw pump can be swapped out real easy.

I'd much rather put a dual return PS reservoir in than deal with a vacuum pump.

 

[cruiser guy]

The PS reservoir should have two returns in a hydroboost setup, yes. However, depending on the style reservoir you have now, it can be accomodated, or the reservoir on the Saginaw pump can be swapped out real easy.

I'd much rather put a dual return PS reservoir in than deal with a vacuum pump.

Sweet! That's what I will do then. I can't remember didn't you use a corvette booster and a cucv Master??

 

[GLTHFJ60]

Sweet! That's what I will do then. I can't remember didn't you use a corvette booster and a cucv Master??

I've got Dually brakes, so I really need a K30 dually master cylinder.

As for the booster, it's a hydroboost booster out of any of the dozens of models that GM put hydroboost in.

 

[burnttoastburgos]

i have heard horror stories associated with Hydro Brakes and loss of steering. True/False?

 

[maxamillion2345]

Well they have an accumulator so you should have about the same amount of assisted braking as vacuum in the event your engine stalls or whatever and steering should be the same too.

 

[Tapage]

i have heard horror stories associated with Hydro Brakes and loss of steering. True/False?

Running HB few years now on Tencha and nothing to complain about .. well I'm not running stock PS system anymore ..

 

[GLTHFJ60]

i have heard horror stories associated with Hydro Brakes and loss of steering. True/False?

Under what circumstance?

Even if you blew a pressure line wide open and had no fluid in the system, you would still have manual steering, so no, there would never be a scenario where you "lose steering".

 

[burnttoastburgos]

Under what circumstance?

Even if you blew a pressure line wide open and had no fluid in the system, you would still have manual steering, so no, there would never be a scenario where you "lose steering".

i have no personal experience of loss, this was told to me by my local 4x4 shop, they advised to stay with the vaccuum set up if possible, naturally after i busted the 2200 dollar nut for the complete mega set up.....

to the O.P. sorry for the hijack

 

[GLTHFJ60]

i have no personal experience of loss, this was told to me by my local 4x4 shop, they advised to stay with the vaccuum set up if possible, naturally after i busted the 2200 dollar nut for the complete mega set up.....

Sounds like you got upsold

If there was some catastrophic design flaw with hydroboost systems, then they wouldn't have been used in tens of thousands of domestic vehicles, spanning cars, trucks and vans.

 

[burnttoastburgos]

naw, that $2200 was materials only, labor is on me in shop.....prepping for ram assist/60's