Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech
GL4x4 Live! GL4x4 Casino







Search
Reply
 
Thread Tools
Old April 11th, 2013, 11:29 AM   #1
Lynxer
Senior Member
 
Lynxer's Avatar
 
Join Date: 03-30-13
Location: Owosso/Michigan
Posts: 223
iTrader: (1)
'71 cj5

Im getting ready to put a new fiberglass tub on my old CJ5, I have the old tub off and the frame painted with some farm and imp. enamel. Waiting on the tub in the mail....


Anyhow ive been going over the jeep while waiting for the tub, and my recent addition is a new brake master cyl. OEM remanufactured. Bench bled, bled rear drums, stripped the front bleeders.. vice grips bled front drums.. BUT my pedal is still soft as hell.. whats going on?


Drum is off front pass side, getting movement in pads, but its not alot..


Anyone have suggestions on adjusting//properly bleeding a full drum brake system? Ive worked on many drums, and I really didnt think this would be an issue....


Dana27 front
Dana44 rear

v6
3speed


Also looking for lift suggestions? mild?

2.5" vs 4"?


Pics just because:




Last edited by Lynxer; April 11th, 2013 at 11:36 AM.
Lynxer is offline   Reply With Quote
Old April 11th, 2013, 12:12 PM   #2
Haggar
Covered in mud...
 
Haggar's Avatar
 
Join Date: 11-06-05
Location: Oxford, MI
Posts: 17,384
iTrader: (52)
How much tire are you looking to run under it? I always ran 31s with no lift on my CJ5. 33s, either a 2.5 or 4", depending on if you want it low, or taller. 35s, I run a spring over with flat springs, and a little extra arch when I ran 36s and 37s. Actually, on my CJ7, I have it sprung over with 33s, and it looks good. I could clear 35s, though.

With the brakes, hmm, if you are sure you have all the air out (still using the frame mounted master cyl? Or did you convert to hanging pedals. Guessing the frame one, since you have no body....

I don't nkow if you'll get a firm pedal without the brake drums on there. Maybe put a c-clamp on the wheel cylinder, and then see if you get it firmed up.

I usually like to use a vacuum bleeder from each wheel. I don't have much experience with that setup, though, with the master cyl so low in the system. It can create some weird spots for air to get trapped.
Haggar is offline   Reply With Quote
Old April 11th, 2013, 12:35 PM   #3
Lynxer
Senior Member
 
Lynxer's Avatar
 
Join Date: 03-30-13
Location: Owosso/Michigan
Posts: 223
iTrader: (1)
Quote:
Originally Posted by Haggar View Post
How much tire are you looking to run under it? I always ran 31s with no lift on my CJ5. 33s, either a 2.5 or 4", depending on if you want it low, or taller. 35s, I run a spring over with flat springs, and a little extra arch when I ran 36s and 37s. Actually, on my CJ7, I have it sprung over with 33s, and it looks good. I could clear 35s, though.


Trail rig, would like to just make some room for the 31's, maybe run 33's with some breathing room?

Would love to go spring over. But were do I find longer driveshafts? cut and weld?
Lynxer is offline   Reply With Quote
Old April 11th, 2013, 04:34 PM   #4
skife
Senior Member
 
skife's Avatar
 
Join Date: 02-12-07
Location: cedar springs mi
Posts: 5,052
iTrader: (5)
Send a message via AIM to skife Send a message via MSN to skife
Quote:
Originally Posted by Lynxer View Post
Trail rig, would like to just make some room for the 31's, maybe run 33's with some breathing room?

Would love to go spring over. But were do I find longer driveshafts? cut and weld?
D&R driveline in jenison
skife is offline   Reply With Quote
Old April 11th, 2013, 05:40 PM   #5
Renegade II
Coil springs are for pens
 
Renegade II's Avatar
 
Join Date: 04-30-06
Location: Frankenmuth, Mi.
Posts: 3,311
iTrader: (13)
Unless you swap from the Ross bell-crank steering to a Saginaw box I'd stay at 33 or smaller tires. You should only need a couple inches of lft to do that.

Spring over on an early 5 gets you into more than just drive shaft lengthening. Drive shaft yokes bind at droop (esp. that tiny u-juint front), re-mount shocks to axles, drop t-case or driveline, move all the brake lines, caster vs pinion angle vs cut and turn knuckles, cross over steering, 27's bend easy, etc...

If it's been setting long or very little use, throw new wheel cyl's on all around & power bleed the brakes. If it's still orig or old brakes the pistons can corrode and seize in the cyls and not work or bleed correctly.

Good luck
Renegade II is offline   Reply With Quote
Old April 12th, 2013, 01:41 PM   #6
Lynxer
Senior Member
 
Lynxer's Avatar
 
Join Date: 03-30-13
Location: Owosso/Michigan
Posts: 223
iTrader: (1)
Ive been on a literal hunt for a decent tub. Ordered a cheapo Jcwhitney tub 2 weeks ago, still hasn't shipped so im about to cancel the order. They keep giving me the run around. Ive heard bad reviews, but ive seen a cj7 tub from them and it looked good to me?



anyway getting frustrated, want to get this sucker back together. Not worried about how pretty it is, just needs a floor!


my tub hunt continues.
Lynxer is offline   Reply With Quote
Old April 9th, 2014, 11:02 AM   #7
jeepbob
Newbie
 
Join Date: 04-05-14
Location: caro MI
Posts: 5
iTrader: (0)
I have a 4WD hardware that has been used hard. It has some cracking in the gel coat but not bad for a 25 year old body that has never been in the garage.
jeepbob is offline   Reply With Quote
Old April 9th, 2014, 11:58 AM   #8
Outdoors
Field Repairs
 
Outdoors's Avatar
 
Join Date: 02-08-06
Location: Stevensville
Posts: 121
iTrader: (0)
Quote:
Originally Posted by jeepbob View Post
I have a 4WD hardware that has been used hard. It has some cracking in the gel coat but not bad for a 25 year old body that has never been in the garage.
x2 on the 4WD tub.

As for the brakes, the nice thing with the old CJ's is they normally will gravity flow bleed. Trickle out the rears for a bit to see if you don't have some air in there. Not sure if the 71 had a proportioning valve, but air in it could be the issue.
Outdoors is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 04:40 PM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
Copyright 2005 - 2012 Cracker Enterprises - Powered by Linux
vB Ad Management by =RedTyger=
Page generated in 0.11976 seconds with 26 queries