Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #1  
Old 04-14-2006, 06:41 PM
subzali's Avatar
subzali subzali is offline
Rising Sun member
 
Join Date: Aug 2005
Location: Denver CO
Posts: 7,379
Default brake question

Hey all you 40 guys...'77 FJ40 - when I press the brake pedal I get a whooshing sound like air being pressed out of a diaphram. After the pedal goes down a little ways then the brakes engage and the old girl stops. If I repeatedly press the brakes then there is less whooshing and more brake engagement. Is this a sign of master cylinder blowby? After the brakes engage, the pedal elevation holds steady, it doesn't drop to the floor.
__________________
Matt Miller
"Stay the Trail," "Tread Lightly," and "Leave No Trace" ethics
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
2000 Tundra Limited TRD 2UZ-FE SOLD
Reply With Quote
  #2  
Old 04-14-2006, 06:51 PM
Uncle Ben's Avatar
Uncle Ben Uncle Ben is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Louisville, Colorado
Posts: 13,095
Send a message via AIM to Uncle Ben
Default

Good and bad news.....

Good news...it's not your master cyl!

Bad news....your brake vacuum booster is toast
__________________
KØUBN
Kevin
TLCA #3007
Northside!

Colorado Trail Patrol
Stay on the Trail!
I'm the God-fearing, gun-toting, American flag-waving, conservative you were warned about!
Quote:
Originally Posted by AxleIke View Post
I need an FJ40....
Quote:
Originally Posted by Red_Chili View Post
Cruisers are superior
Reply With Quote
  #3  
Old 04-14-2006, 07:43 PM
nuclearlemon's Avatar
nuclearlemon nuclearlemon is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: denver
Posts: 5,665
Default

upgrade to an fj60 booster. max is parting one out...see howmuch he wants. it's bolt up, albeit upside down, but that doesn't affect performance and you've a much better chance of finding a good fj60 booster than a good 40 booster
__________________
ige tlca #1431
Reply With Quote
  #4  
Old 04-14-2006, 08:27 PM
treerootCO's Avatar
treerootCO treerootCO is offline
Rising Sun Member
 
Join Date: Aug 2005
Posts: 4,347
Send a message via AIM to treerootCO
Default

Don't run too long that way. Even though you may have brakes, the leaking booster makes the #6 run really really lean. Worst case...you will burn a hole through the piston
__________________
aka Mike D.----->Bio Page KDøGWY
“He who goes unarmed in paradise had better be sure that that is where he is.”—James Thurber
"Its better to be thought a fool rather than to speak up and remove all doubt." - Lincoln
pride is ego, the word I had lost was dignity. The quality or state of being worthy of esteem or respect.
Ptarmigan build thread - 95FZJ80
www.root45.com
www.risingsun4x4club.org

TLCA #14133

Reply With Quote
  #5  
Old 04-15-2006, 09:01 PM
subzali's Avatar
subzali subzali is offline
Rising Sun member
 
Join Date: Aug 2005
Location: Denver CO
Posts: 7,379
Default

Okay, thanks for the quick responses ever'body. So will a minitruck booster work okay as well? I have a BUNCH of credit at the Yota Yard from my stupid minitruck MAF/ECU screwup last year and have nothing to spend it on.

Hijack: Maybe somebody who needs minitruck parts could hook up with me this summer and help me use that credit...
__________________
Matt Miller
"Stay the Trail," "Tread Lightly," and "Leave No Trace" ethics
TLCA# 13684
Rising Sun Bio
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, soon to lose the Sanden OBA to go back to factory emissions
2000 Tundra Limited TRD 2UZ-FE SOLD
Reply With Quote
  #6  
Old 04-15-2006, 10:58 PM
treerootCO's Avatar
treerootCO treerootCO is offline
Rising Sun Member
 
Join Date: Aug 2005
Posts: 4,347
Send a message via AIM to treerootCO
Default

pick up all the parts needed for a disc brake swap and sell it as a package deal on the eBay....
__________________
aka Mike D.----->Bio Page KDøGWY
“He who goes unarmed in paradise had better be sure that that is where he is.”—James Thurber
"Its better to be thought a fool rather than to speak up and remove all doubt." - Lincoln
pride is ego, the word I had lost was dignity. The quality or state of being worthy of esteem or respect.
Ptarmigan build thread - 95FZJ80
www.root45.com
www.risingsun4x4club.org

TLCA #14133

Reply With Quote
Reply

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


All times are GMT -6. The time now is 03:30 PM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.