Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: IrishKenCJ7 on January 08, 2013, 10:36:21 AM

Title: 78 CJ7 Master Cylinder Leak
Post by: IrishKenCJ7 on January 08, 2013, 10:36:21 AM

Ladies,
Mechanic just called and said I have a leak on the brake master cylinder (78 Cj7 GEagle RHD).  I would need a full repair kit with all the rubbers or a replacement master cylinder.

What are my options, any supplies in the UK and any other Jeeps I can take one from, are repair kits cheaper but would I be paying for labour? There is a wrangler YJ 4.0 for breaking for sale in Ireland I could use a few things out of it. Are thee same cylinders. I could use the power steering from it also.

If I need to buy a master cylinder should I just go with Power brake Cylinder.

Any help appreciated,
Ken

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: wildwood on January 08, 2013, 11:03:41 AM

Firewall is similar...or bulkhead..... Some YJ guys use the TJ.....
YJ 1200 psi
TJ 1500 psi

better brakes :icon_super:
worth having a trawl on Pirate 4x4  if you want further low down

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: Bulldog67 on January 08, 2013, 07:27:11 PM

how flush ya feelin? ifsja homegrown vendors section  :greggmo:

I have all Wildwoods old YJ parts to mod the CJ, all for the price of a merlot if memory serves me correctly

first google site: http://street2mud.com/forum/index.php?showtopic=28 (http://street2mud.com/forum/index.php?showtopic=28)

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: wildwood on January 08, 2013, 08:19:11 PM

god Ade that was a good few years ago...... :hysterical:

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: Bulldog67 on January 08, 2013, 08:24:49 PM

May 2008 - I just checked  :003:

I got it partky wrong tho, it was 2 bottles of merlot  :party0036: :party0036:

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: IrishCJ6 on January 08, 2013, 08:50:14 PM

Ken,

If you running discs up front then I would defo run a power booster, I would put money on the YJ one working as I have found most parts are interchangable to about 1996 ish. Worst case is you will have to take the brake/clutch cylinders and pedals and install the complete unit. My powersteering is out of a 96 Cheerokee. All I had to do was modify the hoses and find the brackets for the V8 (hardest part) the rest just bolted directly on. You may need to change the pitman arm though as the non PS will not fit (diff splines). The Cherokee one worked for my setup but I have a 4" lift fitted.

PM me if you want more info

Andrew

Title: Re: 78 CJ7 Master Cylinder Leak
Post by: Ric Jacques on January 18, 2013, 04:28:47 PM

Yup YJ brakes is the way to go - should be reasonably available at breakers yards....

http://www.jeep-cj.com/forums/f49/cj-manual-brakes-upgrade-yj-power-1301/ (http://www.jeep-cj.com/forums/f49/cj-manual-brakes-upgrade-yj-power-1301/)

I've YJ set up but then I've a YJ tub ;)