Rebuild wheel cylinders or buy new ones ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RShaips · 11-23-2003, 05:42 PM

Should I rebuild them or buy new ones ? Whats the difference in price ? I have one in the rear that is leaking , thought I would do both sides along with new pads. Thanks

*rage'nrat638* · 11-23-2003, 05:49 PM

my 3/4 cyl were 34.00 each....
rebuild kit's about 8.00

i would buy new my self.....small price to pay to live

cdowns · 11-23-2003, 06:08 PM

buy new

dinnut · 11-23-2003, 06:09 PM

im gonna buy new ones from autozone at 15 a piece. gonna look into how much they are at oreilly first. shoes were 15 for front and 15 for rear and wheel cylinders were 15 each so ill look into oreilly

walker · 11-23-2003, 06:12 PM

New! I never mess around rebuilding, or buying rebuilt hydraulic parts. They seem to wear out faster and start leaking. My theory on why is that when a new cylinder is bored the machining marks are square with the cylinder so you get a tight seal. When you hone them you enlarge the cylinder and you leave a cross hatch pattern that holds fluid. The cross hatch holding fluid is what you want if you are honing piston cylinders, but not what you want when honing hydraulic cylinders. This only my theory, any arguments for another theory are welcome.
BTW I have rebuilt brake cylinders, clutch cylinders, master cylinders, and tractor hydraulic rams. The result seems to be consistent that they do not last as long and begin to weep sooner.

krue · 11-23-2003, 06:14 PM

Small price to pay to just replace and go IMO.

lukecp · 11-23-2003, 06:42 PM

I bought brand new ones for $8 for the back of my '72. Go new!

*67Fleetsidedream* · 11-23-2003, 06:44 PM

Buyem new. Less of a headache later on.

PanelDeland · 11-23-2003, 07:41 PM

Just did a new one on mine.I went to Manny,Moe and Jacks. Fri evening and got one.Sat afternoon I went to install it and could not get the bolts to start.I have been doing mechanics since I was about 13 so I was amazed that I couldn't start a bolt.Then I took it back out and looked at it.No threads.The holes had been cast but not drilled and tapped.I went to the Zone and got one for $8.99.I checked it in the store to be sure the threads were there.
Just a heads up!!

jorgensensc · 11-23-2003, 09:05 PM

Buy new!! Mine were 10.00 each. I also bought all new bolts too. The old ones were pretty rusty. I actually had to cut one off.

gonebad2 · 11-23-2003, 10:13 PM

Buy new. And don't forget to replace them in pairs. Otherwise, the other side won't last long.

RShaips · 11-23-2003, 11:22 PM

wow,such response ,I did not realize they were that cheap , at that price I would never go to the trouble of rebuilding them. thanks

**passthebuck** · 11-24-2003, 01:38 AM

I agree with everybody. replacement is too easy, cheap & reliable. I just did all the wheel cylinders on my truck & it wasnt difficult. the ONLY time I'd reccomend rebuild is if you dont want the hassle of trying to free a seized flarenut. If you break it off then its off to napa for a new piece of tubing..... (that was me).

11-23-2003, 05:42 PM	#1
RShaips Senior Member Join Date: Jun 2002 Location: Augusta Missouri Posts: 804	Rebuild wheel cylinders or buy new ones ? Should I rebuild them or buy new ones ? Whats the difference in price ? I have one in the rear that is leaking , thought I would do both sides along with new pads. Thanks

11-23-2003, 06:08 PM	#3
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	buy new __________________ 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

11-23-2003, 06:09 PM	#4
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	im gonna buy new ones from autozone at 15 a piece. gonna look into how much they are at oreilly first. shoes were 15 for front and 15 for rear and wheel cylinders were 15 each so ill look into oreilly __________________ 70 longbed 496/th400/Ford 9"

11-23-2003, 06:12 PM	#5
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	New! I never mess around rebuilding, or buying rebuilt hydraulic parts. They seem to wear out faster and start leaking. My theory on why is that when a new cylinder is bored the machining marks are square with the cylinder so you get a tight seal. When you hone them you enlarge the cylinder and you leave a cross hatch pattern that holds fluid. The cross hatch holding fluid is what you want if you are honing piston cylinders, but not what you want when honing hydraulic cylinders. This only my theory, any arguments for another theory are welcome. BTW I have rebuilt brake cylinders, clutch cylinders, master cylinders, and tractor hydraulic rams. The result seems to be consistent that they do not last as long and begin to weep sooner. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

11-23-2003, 06:14 PM	#6
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Small price to pay to just replace and go IMO. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

11-23-2003, 05:49 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	my 3/4 cyl were 34.00 each.... rebuild kit's about 8.00 i would buy new my self.....small price to pay to live

11-23-2003, 06:42 PM	#7
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	I bought brand new ones for $8 for the back of my '72. Go new! __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

11-23-2003, 06:44 PM	#8
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	Buyem new. Less of a headache later on.

11-23-2003, 07:41 PM	#9
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Just did a new one on mine.I went to Manny,Moe and Jacks. Fri evening and got one.Sat afternoon I went to install it and could not get the bolts to start.I have been doing mechanics since I was about 13 so I was amazed that I couldn't start a bolt.Then I took it back out and looked at it.No threads.The holes had been cast but not drilled and tapped.I went to the Zone and got one for $8.99.I checked it in the store to be sure the threads were there. Just a heads up!! __________________ 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"

11-23-2003, 09:05 PM	#10
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	Buy new!! Mine were 10.00 each. I also bought all new bolts too. The old ones were pretty rusty. I actually had to cut one off. __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

11-23-2003, 10:13 PM	#11
gonebad2 Merciless Butcher Join Date: Oct 2003 Location: CC Nevada Posts: 1,447	Buy new. And don't forget to replace them in pairs. Otherwise, the other side won't last long. __________________ Your Bought And Sold....I Got Your Soul!

11-23-2003, 11:22 PM	#12
RShaips Senior Member Join Date: Jun 2002 Location: Augusta Missouri Posts: 804	wow,such response ,I did not realize they were that cheap , at that price I would never go to the trouble of rebuilding them. thanks

11-24-2003, 01:38 AM	#13
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	I agree with everybody. replacement is too easy, cheap & reliable. I just did all the wheel cylinders on my truck & it wasnt difficult. the ONLY time I'd reccomend rebuild is if you dont want the hassle of trying to free a seized flarenut. If you break it off then its off to napa for a new piece of tubing..... (that was me). __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car

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