brakes diving - The 1947 - Present Chevrolet & GMC Truck Message Board Network

snacob14 · 10-21-2006, 11:27 AM

I just went and looked at a 68 two wheel drive that was a six cyl three speed. The brakes were pretty bad it seemed. They really would dive to the left when I would touch them, they seemed to work good but they would grab pretty hard to the left, also it didn't have power steering, how hard of a conversion is that.

71/454 · 10-21-2006, 04:56 PM

sounds like it needs a set of calipers, remember to change both or else it'll pull the other way in a couple months. The power steering conversion is simple just grab the whole setup from a 73-87. Just remember to get it all of the same truck because the fittings are standard on some and metric on the newer years. The only hard part I would think would be to get the pump to mount to a six, but there must be some brackets still out there for a six

**kwmech** · 10-21-2006, 05:24 PM

68 would be drums, unless it has been converted already, could need new lining, adjustment or a wheel cylinder could be frozen. The power steering conversion is relatively easy if you can locate the correct brackets for the I6

cdowns · 10-21-2006, 06:02 PM

i'd think maybe a leaky cylinder

71/454 · 10-21-2006, 06:58 PM

I digress, I guess I didn't pay attention. My new vote is for a leaky cylinder as well

msgross · 10-21-2006, 07:08 PM

Just do a disc swap and be done with it. Wish I could but 68 4x4's have to have new axles.

qksilver · 10-22-2006, 12:20 AM

Later model discs will bolt on to the drum closed knuckle front axle. Pull every thing off from the steering knucle out and bolt on

chipflyer · 10-22-2006, 08:27 AM

I think its the RH brake hose. It is very common to find these old hose's completely blocked. Brake fluid seems to disintegrate them internally over time and they plug.

Jeff

PanelDeland · 10-22-2006, 11:42 AM

Wheel cylinders,shoes and hoses.They are 35 years old,also turn the drums and spend $20.00 or so for a rebuilt MC.You're probably looking at about $150.00 in parts for the good stuff.Brakes are not the place to cheap out.

mrein3 · 10-22-2006, 12:16 PM

Quote:

Originally Posted by chipflyer

I think its the RH brake hose. It is very common to find these old hose's completely blocked. Brake fluid seems to disintegrate them internally over time and they plug.

Jeff

It may be the RH hose. What ever the problem you have to look at the RHS. If it is diving hard left when you stop you have something hung up on the RHS. If the RHS is hung up, it heats up. Then when you hit the brake that side has faded and your left does all the stopping. I bet it pulls right when you go down the road. If it doesn't pull right look for a leaky right front wheel cylinder. It could be leaking out and causing the right to have little or no stopping ability.

Either way (stuck rhs or leaky cylinder) it is an easy fix. Just go easy if you buy it until you get it fixed right.

10-21-2006, 11:27 AM	#1
snacob14 Registered User Join Date: Oct 2006 Location: Desoto, MO Posts: 225	brakes diving I just went and looked at a 68 two wheel drive that was a six cyl three speed. The brakes were pretty bad it seemed. They really would dive to the left when I would touch them, they seemed to work good but they would grab pretty hard to the left, also it didn't have power steering, how hard of a conversion is that.

10-21-2006, 04:56 PM	#2
71/454 Turbo Guy Join Date: Jan 2005 Location: Calgary Alberta Posts: 353	Re: brakes diving sounds like it needs a set of calipers, remember to change both or else it'll pull the other way in a couple months. The power steering conversion is simple just grab the whole setup from a 73-87. Just remember to get it all of the same truck because the fittings are standard on some and metric on the newer years. The only hard part I would think would be to get the pump to mount to a six, but there must be some brackets still out there for a six __________________ 1972 Gmc Custom swb intercooled twin turbo 327 10.5-1 and 12 lbs of boost, Nodular iron case super t-10 4 speed with a blowproof bellhousing, 12 bolt eaton posi soon to have moser axles. 1998 Honda CR250 fully ported, case matched, milled head, vortexed carb and revalved suspension but don't forget the woody woodpecker decal kit! Things I've broken so far: 12 bolt diff saginaw 4 spd many, many pieces Aluminum case Super t-10 4 spd

10-21-2006, 05:24 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,499	Re: brakes diving 68 would be drums, unless it has been converted already, could need new lining, adjustment or a wheel cylinder could be frozen. The power steering conversion is relatively easy if you can locate the correct brackets for the I6

10-21-2006, 06:02 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: brakes diving i'd think maybe a leaky cylinder __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-21-2006, 06:58 PM	#5
71/454 Turbo Guy Join Date: Jan 2005 Location: Calgary Alberta Posts: 353	Re: brakes diving I digress, I guess I didn't pay attention. My new vote is for a leaky cylinder as well __________________ 1972 Gmc Custom swb intercooled twin turbo 327 10.5-1 and 12 lbs of boost, Nodular iron case super t-10 4 speed with a blowproof bellhousing, 12 bolt eaton posi soon to have moser axles. 1998 Honda CR250 fully ported, case matched, milled head, vortexed carb and revalved suspension but don't forget the woody woodpecker decal kit! Things I've broken so far: 12 bolt diff saginaw 4 spd many, many pieces Aluminum case Super t-10 4 spd

10-21-2006, 07:08 PM	#6
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: brakes diving Just do a disc swap and be done with it. Wish I could but 68 4x4's have to have new axles.

10-22-2006, 12:20 AM	#7
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: brakes diving Later model discs will bolt on to the drum closed knuckle front axle. Pull every thing off from the steering knucle out and bolt on

10-22-2006, 08:27 AM	#8
chipflyer Registered User Join Date: May 2004 Location: Topeka, Ks Posts: 2,293	Re: brakes diving I think its the RH brake hose. It is very common to find these old hose's completely blocked. Brake fluid seems to disintegrate them internally over time and they plug. Jeff __________________ I'm not a pessimist, I'm just optimistic that bad things are going to happen. 1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets! 1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241.

10-22-2006, 11:42 AM	#9
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: brakes diving Wheel cylinders,shoes and hoses.They are 35 years old,also turn the drums and spend $20.00 or so for a rebuilt MC.You're probably looking at about $150.00 in parts for the good stuff.Brakes are not the place to cheap out. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"



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