Master Cylinder Swap Specifics - 3 questions
- Thread starter Randy88FJ62
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- Thread starter
- #22
Lost,
That is an even better solution than using the old rusted stock FJ62 diaphram / booster. I will definitely try that.
To bench bleed, you do exactly that, fill the reservoir, route the two ports into the reservoir with the ends submerged in brake fluid and push the piston in and out until no more bubbles come out. When done, plug the ports real quick after disconnecting the lines you used to route the ports. There are some steps in my ROTW thread, including pictures of the lines I used to route the ports into the reservoir.
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- #24
Took ten years but the used T100 MC finally gave out. Swapping with a new Advics (ie aisin) this month. Luckily the booster is still going strong.
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- #25
I am confused when it comes to residual valves. I am reading that drums require a 12 lb residual and rear disc (ie my rear 97 FZJ80 axle) requires 2-4 residual valves (keeps the rear pads closer to the disk for faster brake response).
The T100 trucks came with rear drum brakes. How do I check and if needed, replace the residual valve in the master cylinder?
This is the new one I purchased:
Advics 472013D020 Brake Master Cylinder
The T100 trucks came with rear drum brakes. How do I check and if needed, replace the residual valve in the master cylinder?
This is the new one I purchased:
Advics 472013D020 Brake Master Cylinder
LAMBCRUSHER
SILVER Star
Just take it out if it’s still there, usually on the masters rear output....
- Thread starter
- #27
Looks like the 1995 T100 MC currently on my truck and the 1993 T100 MC coming in the mail both don't have residual valves. All the threads (mostly 40/55 tech) show the residual valves screwed into the two exit ports of the MC.
This agrees with the roundforge website I was reading which says the FZJ80 MC is most sought after for the 2lb dual residual valves for the front and rear discs. I guess the residual valves keep the pistons and pads from backing off the rotor which helps for less pad movement and faster braking response.
I'm running SSBC quad piston brakes in front and stock FZJ80 brakes in rear so I think my braking feel will be a lot different than most due to the extra fluid movement the front brakes require.
Side note for those that care. Ø1" MC bore of the T100's are non-ABS and the Ø1 and 1/16 MC bore are for ABS. The roundforge website says this doesn't matter but others say the return flow is higher on ABS? Still unsure of the exact differences of ABS versus non-ABS.
Always learning something new.
This agrees with the roundforge website I was reading which says the FZJ80 MC is most sought after for the 2lb dual residual valves for the front and rear discs. I guess the residual valves keep the pistons and pads from backing off the rotor which helps for less pad movement and faster braking response.
I'm running SSBC quad piston brakes in front and stock FZJ80 brakes in rear so I think my braking feel will be a lot different than most due to the extra fluid movement the front brakes require.
Side note for those that care. Ø1" MC bore of the T100's are non-ABS and the Ø1 and 1/16 MC bore are for ABS. The roundforge website says this doesn't matter but others say the return flow is higher on ABS? Still unsure of the exact differences of ABS versus non-ABS.
Always learning something new.
- Thread starter
- #28
What is the point of the 47210T bolt on the bottom of the MC? Does it have any application for bench bleeding? Or just pumping fluid through the two main exit ports is fine?
