ForumsBasic TrainingOnline Maintenance ManualsThe M715 Zone Vin RegistryVPW's M715 Parts ListGalleriesLinks

Go Back   M715 Zone > General Tech > Open Discussion

Open Discussion Open Discussion for all M715 series trucks

Reply
 
Thread Tools Display Modes
  #31  
Old March 9th, 2013, 09:41 PM
randyscycle's Avatar
randyscycle randyscycle is offline
Staff Sergeant
 
Join Date: Jul 2007
Location: Rhoadesville, Virginia (five miles from no place)
Posts: 5,396
randyscycle is a Soldier
Default

I love Rock Auto. Unfortunately my checkbook doesn't!
__________________
"Free advice is worth what you pay for it."
Reply With Quote
  #32  
Old March 10th, 2013, 04:24 AM
Flingarrows's Avatar
Flingarrows Flingarrows is offline
Sergeant

 
Join Date: Nov 2009
Location: Greenwood, Indiana
Posts: 1,967
Flingarrows is a Soldier
Default

Quote:
Originally Posted by randyscycle View Post
I love Rock Auto. Unfortunately my checkbook doesn't!
Rock Auto loves me too, they get a fair chunk of my hobby budget
__________________
Thanks, George
Joshua 24:15
Reply With Quote
  #33  
Old June 10th, 2013, 10:42 AM
Pen1311's Avatar
Pen1311 Pen1311 is offline
New Recruit
 
Join Date: Aug 2009
Location: Madison Heights, MI, just outside Detroit
Posts: 21
Pen1311 is a Soldier
Default

I know it has been awhile since you posted this. Just wanted to say thanks for the post and the great pics.

Mike Brink
Reply With Quote
  #34  
Old August 27th, 2013, 09:53 AM
gene imes gene imes is offline
Civilian
 
Join Date: Aug 2009
Location: Watertown, Wi
Posts: 4
gene imes is a Soldier
Default

Another possibility for remove the three screws is to drill the heads completely off and pull the drum. This gives good access for WD40 and vise grips. good thread. thanks
Reply With Quote
  #35  
Old September 30th, 2013, 06:33 AM
Jim Hunter's Avatar
Jim Hunter Jim Hunter is offline
Private
 
Join Date: Oct 2009
Location: Athens, Greece
Posts: 91
Jim Hunter is a Soldier
Default

I use an impact screwdriver...That works best for me...

Jim
Reply With Quote
  #36  
Old June 25th, 2016, 09:12 AM
Nailhead Nailhead is offline
Corporal
 
Join Date: Aug 2015
Location: Longmont, CO
Posts: 644
Nailhead is a Soldier
Default

We installed the E-350 wheel cylinders in my truck, along with the '74 Corvette MC, and it appears to work great, with a rock-solid pedal at half travel. It has only been driven about 30', so the jury is still out on stopping power.

One thing we learned in the process of modifying the WC mounting holes is that half a chainsaw file chucked into a drill works really well.

Thank you very much to all those who had a hand in coming up with this modification.
Reply With Quote
  #37  
Old June 11th, 2017, 05:33 AM
brute4c's Avatar
brute4c brute4c is offline
Grand Poobah
 
Join Date: Sep 1998
Location: North Central Wisconsin
Posts: 11,287
brute4c is a Soldier
Default

It has now been found that there are Chevy wheel cylinders that fit the backing plate with no mods at all and connect to the stock brake lines.

Raybestos numbers for the cylinders are:

Left-WC9344
Right-WC9345

Heres a pic of one in the backing plate:



THANKS to Kaiserman for figuring this out and posting the part numbers and pic!!
__________________
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.

Pro-choice, that's a LIE, babies don't choose to die!!
Reply With Quote
  #38  
Old June 11th, 2017, 08:58 AM
brycer1968's Avatar
brycer1968 brycer1968 is offline
Private 1st Class
 
Join Date: Aug 2015
Location: Portlandia, Oregon USA
Posts: 259
brycer1968 is a Soldier
Default 1.25" bore tho . . .

Ive been following this in the other thread and I was all excited about this opportunity. I did a quick parts search on line and those part numbers correspond with a 1.25" bore cylinder - so they are bigger than the stock 1-1/16" bore of our stock WC's. Any thoughts on how much that changes the usability of this wheel cylinder in mostly stock or even in modified braking systems??

Left-WC9344
Right-WC9345

Bryce
__________________
1969 M725 ambulance
Reply With Quote
  #39  
Old June 13th, 2017, 04:48 PM
gerrykan's Avatar
gerrykan gerrykan is offline
Private
 
Join Date: Nov 2010
Location: Ozark Mountains MO
Posts: 202
gerrykan is a Soldier
Default

brycer1968,
It has been a couple of decades since I took a hydraulics course, and my memory isn't as good as it once was, but...

I think when the wheel/slave cylinder is larger diameter than the master cylinder it will be easier to push the master cylinder.
This is because the pressure from the master cylinder is spread out over the larger piston diameter of the wheel cylinder.

The master cylinder will have to travel further to accomplish this, so there is the possibility of running out of stroke in the chosen master cylinder.

If you go in reverse with a large diameter master cylinder and small diameter wheel cylinders, the stroke will be short, but may require a lot of pedal pressure to actuate the wheel cylinders.

Please research this before taking my word as gospel, because I could be remembering wrong.
If anyone knows that I am wrong, please speak up and I will have a moderator remove my post so as not to disseminate false information.
__________________
Roy
Reply With Quote
  #40  
Old June 13th, 2017, 04:58 PM
gerrykan's Avatar
gerrykan gerrykan is offline
Private
 
Join Date: Nov 2010
Location: Ozark Mountains MO
Posts: 202
gerrykan is a Soldier
Default

Another reference would be a bottle jack, or floor jack.

The pump piston is usually much smaller diameter than the lifting piston.

The small piston pump will lift a great deal of weight with little effort, but you have to apply quite a few strokes to accomplish the lift.
__________________
Roy
Reply With Quote
Reply

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Master Cylinder Conversion - Upgrade Warthog Modified Tech 36 August 26th, 2011 12:18 PM
Wheel cylinder ? 93-12smoke Modified Tech 1 November 30th, 2009 09:31 PM
stock wheel cylinder Chef Stock Tech 2 September 30th, 2008 06:54 AM
Wheel cylinders to Vette master cylinder Q's Nuke_Bill Modified Tech Archives 10 March 31st, 2004 06:48 PM


All times are GMT -7. The time now is 05:20 AM.

 

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
1998 - 2018


This site is owned and operated by:
M715 Zone, LLC
President: Jon Schmidt, User ID=brute4c
If you have any suggestions, comments, problems or questions, contact:  brute4c@m715zone.com

Use of this site means you understand and agree to our TERMS OF USE

Copyright Notice:
This web site is subject to the protection of the copyright laws of the United States and other countries. Except for Personal Use Only, you may not modify, copy, distribute, transmit, display, perform, reproduce, publish, license, create derivative works from, transfer, or sell any information obtained from any part of the M715 Zone website without the prior written permission of M715 Zone, LLC.

Written permission can only be obtained by contacting
brute4c@m715zone.com

Copyright 1998-2018