guybb3
07-13-2005, 09:31 AM
Anybody ever put a master cylinder with a different bore size on their truck to jack up pressure at the wheels? Any other things that have worked well anyone has done?
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wi65td 07-13-2005, 10:04 AM Would tweeking the proportioning valve accomplish similar results? Turbine Doc 07-13-2005, 10:22 AM Thought about it but haven't gone there yet with bigger master cyl, what improved for me was stainless flex lines to replace the stock rubber ones, carbon pads, & slotted/drilled rotors, and driving out the knock out slot in back of rear shoe plates, so I could adjust shoes without pulling drums, They are supposed to auto adjust, I've had limited success with that, when fixin to do a "big tow" I like to manually adjust them as well. guybb3 07-13-2005, 11:51 AM I did the stainless lines all around as well and I've also put slightly larger wheel cylinders in the back as suburbans my year had some proportioning issues. Here's the thing, I can't lock the fronts with the ABS disabled, so I know I am missing some braking power :mad: SuperTuscan 07-13-2005, 02:39 PM While researching a rear disk brake system for my suburban I came across some NAPA master cylinder part numbers: SUPPLIER PART # REMFG PORT # BORE SIZE FRONT REAR PRICE CORE COMMENTS NAPA TSM102754 Y 2 40MM 9/16 - 18 1/2 - 20 $84.99 $27.78 C3500HD/4-wheel disc diesel truck NAPA TSM101871 Y 2 40MM/1.125 9/16 - 18 1/2 - 20 $37.99 $13.00 Angled reservoir NAPA TSM101873 Y 2 40MM/1.125 9/16 - 18 1/2 - 20 $34.99 $8.00 Small plastic reservoir NAPA TSM101695 Y 2 1.125 9/16 - 18 1/2 - 20 $29.00 $4.00 Integrated metal reservoir NAPA TSM102535 Y 2 1.250 9/16 - 18 1/2 - 20 $61.99 $13.00 P30 van - same as C3500 NAPA TSM102684 N 2 1.25 9/16 - 18 1/2 - 20 $29.99 $- Stock I apologize for the formatting of the table:) - you can go to NAPA and enter the part number and get the same information. guybb3 07-13-2005, 08:54 PM My wheel cylinders are 1 1/8" instead of 1 1/16" made a huge difference for the better. I got them from EGR brakes but they were a normal raymold? wheel cylinder when I got them. I saved the part # somewhere for when they eventually fail. 95yukon 07-21-2005, 10:06 PM I heard the 3/4 ton front calipers will bolt onto a 1/2 ton but never tried it. It wouldn't be hard to do, and it will provide more clamping. guybb3 07-25-2005, 12:10 PM Even though the truck is a 1500 it is exactly the same as a 2500 so that won't help | ||