Installed my 929 master cylinder
#1
Installed my 929 master cylinder
Finally got around to installing my 929 master cylinder.
The brake pedal feels awesome. I love it. Its a lot easier to regulate braking (although Im still getting used to it - I keep braking earlier than I need to).
Since I took the pic I removed the ABS for the rear brakes and installed a willwood proportioning valve. I still need to make the lines for the front brakes. No more ugly green lines. Just silver soon. And when Im done with the front the only lines on my firewall will be the vacuum line for my brake booster and the line for my front right caliper.
The brake pedal feels awesome. I love it. Its a lot easier to regulate braking (although Im still getting used to it - I keep braking earlier than I need to).
Since I took the pic I removed the ABS for the rear brakes and installed a willwood proportioning valve. I still need to make the lines for the front brakes. No more ugly green lines. Just silver soon. And when Im done with the front the only lines on my firewall will be the vacuum line for my brake booster and the line for my front right caliper.
#4
Originally Posted by audiobot7
Looks Awesome. I was just thinking about doing this mod, but havent looked into it yet. Is it necessary to remove the rear abs?
#5
For anyone who wants to do it, this is a great write up:
http://robrobinette.com/mastercylinder929.htm
http://robrobinette.com/mastercylinder929.htm
#6
Originally Posted by stokedxiv
For anyone who wants to do it, this is a great write up:
http://robrobinette.com/mastercylinder929.htm
http://robrobinette.com/mastercylinder929.htm
#7
Id highly suggest this as an upgrade. Its a direct bolt on, but you're gonna need a pipe bender and a double flare tool. Both are cheap and easy to get. Save the fittings off your old lines because they're a bit hard to find (and why throw away something that you can re-use). And pep boys sells brake line by the 5' sticks. You need the smallest diameter one.
Even though I dont think it improves braking, it feels like it does because the pedal is so much more controllable and responsive.
Even though I dont think it improves braking, it feels like it does because the pedal is so much more controllable and responsive.
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#13
If you've got stock calipers this can be considered a performance *downgrade*.
A bigger MC will make pedal travel shorter and also reduce the amount of force the calipers clamp on the rotors for a given pedal force.
A bigger MC will make pedal travel shorter and also reduce the amount of force the calipers clamp on the rotors for a given pedal force.
#15
For the same clamping force, you will have to push harder. And travel will be shorter. The concept is the hydraulic version of grabbing a wrench closer to the nut.
I have never driven a car with stock calipers and a 929 master cylinder, but I don't think I would consider it a downgrade if you have decent (appropriate for your usage; i.e. track pads if you are on track) pads on the car. You only need mega-clamping-force after the brakes have faded. Having to push harder gives you some additional "resolution" for modulating the brakes.
-Max
I have never driven a car with stock calipers and a 929 master cylinder, but I don't think I would consider it a downgrade if you have decent (appropriate for your usage; i.e. track pads if you are on track) pads on the car. You only need mega-clamping-force after the brakes have faded. Having to push harder gives you some additional "resolution" for modulating the brakes.
-Max
#16
Originally Posted by maxcooper
For the same clamping force, you will have to push harder. And travel will be shorter. The concept is the hydraulic version of grabbing a wrench closer to the nut.
I have never driven a car with stock calipers and a 929 master cylinder, but I don't think I would consider it a downgrade if you have decent (appropriate for your usage; i.e. track pads if you are on track) pads on the car. You only need mega-clamping-force after the brakes have faded. Having to push harder gives you some additional "resolution" for modulating the brakes.
-Max
I have never driven a car with stock calipers and a 929 master cylinder, but I don't think I would consider it a downgrade if you have decent (appropriate for your usage; i.e. track pads if you are on track) pads on the car. You only need mega-clamping-force after the brakes have faded. Having to push harder gives you some additional "resolution" for modulating the brakes.
-Max
Ditto
#17
Has anyone driven a car with the stock brakes and 929 master? All those who say you have to push on it harder - it sure as **** doesnt feel like you do. Im barely tapping the pedal and the car will already start braking. ****, it doesnt move but 2" before it starts lockin up the tires, and it doesnt even feel as hard to push as my clutch. Maybe Im just crazy.
#18
Originally Posted by Mr3plus1
No more ugly green lines. Just silver soon. And when Im done with the front the only lines on my firewall will be the vacuum line for my brake booster and the line for my front right caliper.
What, do you set the cruise to get consistant lap times?
You removed half (the rear only) abs?
I always thought is was all or none.
Heck, if you had a pick up, all you have is rear abs.
Whatever..............Nice polish job on the MC
#19
Originally Posted by Mr3plus1
it sure as **** doesnt feel like you do.
You're pushing on the pedal harder but you don't have to push it as far. There is not any mystery involved in this; it's very clear as the others have said.
#20
let's face it, if there is a fractional increase in pedal force that must be applied, unless you have trouble squatting your own body weight at the gym, you are NOT going to notice ANY difference whatsoever in leg muscle effort, and pedal modulation is greatly improved....if you were pressing the pedal with your hand you *might* notice the difference
just do it
just do it
#21
Originally Posted by DamonB
Unless you're God the principles of hydraulics still apply to you.
if you are complaining about brake pedal effort, I highly suggest you visit the local gym and get in shape
#22
Originally Posted by Improved FD
maybe some people on this forum have chicken legs
if you are complaining about brake pedal effort, I highly suggest you visit the local gym and get in shape
if you are complaining about brake pedal effort, I highly suggest you visit the local gym and get in shape
Nobody claimed that the increased effort would be strenuous, they merely claimed it exists. The 929 master cylinder has a larger bore than the stock one. It trades reduced pedal travel for increased pedal pressure.
#23
its 1/16 bigger bore. Look, Ive done it. Im no muscle man but Im no weakling. I keep hearing people saying that it increses force needed. Yes, it may. But will the average person notice a difference? I strongly doubt it. I daily drive my 7 and the only thing I noticed was difference in pedal travel. The extra effort required is a totaly useless point to be brought into this convo. Realisticly, the only thing you're going to notice is how little you have to move the pedal to effect braking, not that its harder to push on it.
#24
Originally Posted by Sled Driver
All that effort to "clean up" your firewall & you still have the cruise control system installed????
What, do you set the cruise to get consistant lap times?
You removed half (the rear only) abs?
I always thought is was all or none.
Heck, if you had a pick up, all you have is rear abs.
Whatever..............Nice polish job on the MC
What, do you set the cruise to get consistant lap times?
You removed half (the rear only) abs?
I always thought is was all or none.
Heck, if you had a pick up, all you have is rear abs.
Whatever..............Nice polish job on the MC
And the ABS is only half removed because I havent had the chance to make the lines for the front brakes. All my tools are at the shop, and realisticly the only time I get to work on my car is before or after work (and maybe during lunch break). I just started removing it on Saturday. Before this weekend I'll have it all gone.
#25
I changed to the 929 brake master cylinder after I had already switched to larger aftermarket brakes so I can't really comment on how it changes the feel of the stock brakes. It did make a perceptable but NOT a big difference with my larger aftermarkets brakes compared to the stock brake cylinder.
Perhaps people that are experiencing a BIG improvement when changing to the 929 master cylinder are feeling the additional benefits of having replaced a worn original master cylinder or replacing old brake fluid which would cause a brake feel improvement above and beyond what the slightly larger master cylinder bore alone could create.
Perhaps people that are experiencing a BIG improvement when changing to the 929 master cylinder are feeling the additional benefits of having replaced a worn original master cylinder or replacing old brake fluid which would cause a brake feel improvement above and beyond what the slightly larger master cylinder bore alone could create.
Last edited by John Magnuson; 02-28-06 at 04:43 PM.