Brake master cylinder?

simplyxj · 03-20-07, 09:30 PM

Brake master cylinder?
My master cylinder is bad in my 85' 4runner. I am wondering the advantage of the 1'' bore master cylinder from trail gear. It's a larger bore but will i notice a difference in braking power? Is it worth doing this or buying the $30 one from the local auto store?

mtntoys · 03-21-07, 06:05 PM

If you are keeping the rest of your breaking system stock, then stick with the stock size master cylinder. The 1” bore is going to push more fluid then the stock MC. Using a 1” bore MC with a stock breaking system will cause you to push the pedal hard for a shorter distance. You will have less of a mechanical advantage with the lager bore. Most people who up grade to the 1” bore have a modified breaking system that requires more fluid. For example, disks in the rear and/or lager calipers in the front.

tntoyota · 03-21-07, 08:11 PM

I think there is a brake mod as well using a V6 MC correct me if I'm wrong....

I think the V6 MC's vac. booster is 1" larger in diamiter. hmm...

you also have to be aware that companyes might try to take abvantage of you by making you think there products are a "custom" mod when in fact it might be something off a supra. (so to speak)

Bear80 · 03-21-07, 11:43 PM

The newer boosters are a dual diaphragm. I use a boster and MC off a Tundra. The BEST thing to do is get the HUGE booster off a 22RE-T.

simplyxj · 03-22-07, 12:12 AM

awesome! thanks!

Red_Chili · 03-22-07, 02:22 PM

No reason to go with Trail Gear, I run a Tacoma 1" bore MC from NAPA, a V6 booster from a 92 V6 truck, IFS calipers in the front, SA calipers in the rear with a Front Range full floater kit, a manual prop valve from FRORF, and am considering interior windshield wipers to handle the noseprints on the windshield.

The stuff about residual valves is... stuff. Only a requirement where the rotors are out of round, on, say, Chebbies or such.

I personally experienced the travails of doing the above one step at a time, and can personally attest that the whole Kit-n-kaboodle needs to be in balance with each other. The closer I got to the whole thing as it is today, the happier I was!

Bear80 · 03-22-07, 06:05 PM

Can you show me the Taco 1" MC??? or does it read 15/16 on the side?? 15/16 is NOT considered a 1" bore a 1" bore is just that not 15/16.

LoveHotHonda · 03-23-07, 01:47 AM

If you really have to fix it, then spend for it.
_____________________________
Honda 07 Ridgeline - Get the Honda 07 Ridgeline Catalog by Honda Motors

Red_Chili · 03-23-07, 12:08 PM

Quote:

Originally Posted by Bear80

Can you show me the Taco 1" MC??? or does it read 15/16 on the side?? 15/16 is NOT considered a 1" bore a 1" bore is just that not 15/16.

It's not 15/16.

Bear80 · 03-23-07, 04:02 PM

got a part number? I know of no taco that has a 1" MC, nor a Tundra for that matter because I'm using a booster and mc off a Tundra.

03-20-07, 09:30 PM	#1
simplyxj IH8MUD Rookie Join Date: Dec 2006 Posts: 67	Brake master cylinder? Brake master cylinder? My master cylinder is bad in my 85' 4runner. I am wondering the advantage of the 1'' bore master cylinder from trail gear. It's a larger bore but will i notice a difference in braking power? Is it worth doing this or buying the $30 one from the local auto store?

03-21-07, 11:43 PM	#4
Bear80 IH8MUD Lifer Join Date: Sep 2004 Location: San Antonio, TEXAS TLCA# 14779 Posts: 2,496	The newer boosters are a dual diaphragm. I use a boster and MC off a Tundra. The BEST thing to do is get the HUGE booster off a 22RE-T. __________________ 40th FZJ80 - Range Rover Recovery Vehicle Alamo City Land Cruisers -Benjamin-

03-22-07, 02:22 PM	#6
Red_Chili IH8MUD Rookie Join Date: Nov 2005 Location: Littleton, CO TLCA# 13257 Posts: 68	No reason to go with Trail Gear, I run a Tacoma 1" bore MC from NAPA, a V6 booster from a 92 V6 truck, IFS calipers in the front, SA calipers in the rear with a Front Range full floater kit, a manual prop valve from FRORF, and am considering interior windshield wipers to handle the noseprints on the windshield. The stuff about residual valves is... stuff. Only a requirement where the rotors are out of round, on, say, Chebbies or such. I personally experienced the travails of doing the above one step at a time, and can personally attest that the whole Kit-n-kaboodle needs to be in balance with each other. The closer I got to the whole thing as it is today, the happier I was! __________________ -Bill Rising Sun 4x4 Land Use Coordinator 1987/1990/1996/1984/1986 5VZ-FE SAS 4Runner Yeah, I know, but about the only 1987 part on it anymore is the body[edit: even that ain't 1987 now...] What is a minitruck guy doing on a Land Schmooser forum, anyway??!?!

03-22-07, 06:05 PM	#7
Bear80 IH8MUD Lifer Join Date: Sep 2004 Location: San Antonio, TEXAS TLCA# 14779 Posts: 2,496	Can you show me the Taco 1" MC??? or does it read 15/16 on the side?? 15/16 is NOT considered a 1" bore a 1" bore is just that not 15/16. __________________ 40th FZJ80 - Range Rover Recovery Vehicle Alamo City Land Cruisers -Benjamin-

03-23-07, 04:02 PM	#10
Bear80 IH8MUD Lifer Join Date: Sep 2004 Location: San Antonio, TEXAS TLCA# 14779 Posts: 2,496	got a part number? I know of no taco that has a 1" MC, nor a Tundra for that matter because I'm using a booster and mc off a Tundra. __________________ 40th FZJ80 - Range Rover Recovery Vehicle Alamo City Land Cruisers -Benjamin-

03-21-07, 06:05 PM	#2
mtntoys IH8MUD Junior Join Date: Jan 2006 Location: Blacksburg, VA/Felton, PA Posts: 107	If you are keeping the rest of your breaking system stock, then stick with the stock size master cylinder. The 1” bore is going to push more fluid then the stock MC. Using a 1” bore MC with a stock breaking system will cause you to push the pedal hard for a shorter distance. You will have less of a mechanical advantage with the lager bore. Most people who up grade to the 1” bore have a modified breaking system that requires more fluid. For example, disks in the rear and/or lager calipers in the front.

03-21-07, 08:11 PM	#3
tntoyota Join Date: Feb 2007 Location: Nashville TN...But I miss Richlands NC Posts: 1,195	I think there is a brake mod as well using a V6 MC correct me if I'm wrong.... I think the V6 MC's vac. booster is 1" larger in diamiter. hmm... you also have to be aware that companyes might try to take abvantage of you by making you think there products are a "custom" mod when in fact it might be something off a supra. (so to speak)

03-22-07, 12:12 AM	#5
simplyxj IH8MUD Rookie Join Date: Dec 2006 Posts: 67	awesome! thanks!

03-23-07, 01:47 AM	#8
LoveHotHonda IH8MUD Rookie Join Date: Mar 2007 Posts: 5	If you really have to fix it, then spend for it. _____________________________ Honda 07 Ridgeline - Get the Honda 07 Ridgeline Catalog by Honda Motors

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