Brake help

[BaconYJ]

Last summer I replaced the d30 and d35 on my 89 YJ with a 79 F350 d60 front axel and a 88 GM 3500 14bolt. The 14 bolt has the disc brake conversion on it using 3/4 ton chevy rotors and calipers. Now I the problem of the master cylinder not pushing enough fluid to stop the vehical with out pumping the brake pedel a time or 2.

Does anyone know of a power brake booster or a different master cylinder I can put in to solve this?

Secondly I have no parking brake on the 14 bolt atm. What year and make do you suggest to snag a parking brake from in the local junk yard?

1989 Jeep YJ
2.5L
AX5
NP231

Thank,

Bacon

 

[yjdave]

f350 m/c--early vette or merc marq if you have 4 wh disc. almost anything that bolts up and has 1 1/8- 1 1/4 bore..look into t/c e-brakes they work 100 times better and end up costing just alittle more.

 

[Bounty__Hunter]

Check out the '68 vette MC for 4whl disc. Also consider a prop. valve from a 4whl disc setup like the TJ Rubi.

 

[Utah_jeepster]

For a proportioning valve look to the grand Cherokee.

Pushing that big of brake calipers I would look into going to a hydro boost style
that is powered from your power steering pump instead of the vacuum created by your motor. Summit Racing has these hydro boost brake parts for your jeep.

 

[BaconYJ]

Thanks for the info and ideas. I will look into them and keep ya posted.

Bacon