bryonbush 85 Report post Posted August 27, 2019 My wilwood parts showed up this past week while I was away. I went with their master cylinder and the proportioning valve. Down side is with the booster I have, the MS hits the shock tower. Anyone running a thinner MS? Quote Share this post Link to post Share on other sites
69Stanger408 82 Report post Posted August 27, 2019 I don't use a booster as the vacuum is not sufficient to manage same. Made a plate out of aluminum to cover the mounting holes 1 RPM reacted to this Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted August 28, 2019 There are several posts on this topic. The single diaphragm booster is not as deep, but is much larger in diameter. I used a double diaphragm booster and a Ford Explorer/Ford Ranger master cylinder. One of my toughest parts of my whole project was to find a combination master cylinder, prop valve, etc that fit and had enough clearance from my headers. I think I put a separate post on this on the technical forum. If not, let me look and I will find the pics. The Wilwood master cylinder is long. Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted August 28, 2019 71 - 73 mustang pancake booster. Quote Share this post Link to post Share on other sites
lanky 44 Report post Posted August 28, 2019 I have yet to install mine, but I also have an explorer MC that will fit with a booster. I know this because the MC I have now (cobra) is exactly the same length and I've seen pictures of it fitted with a dual diaphragm booster. Quote Share this post Link to post Share on other sites
RPM 1,190 Report post Posted August 28, 2019 I too have to recommend using no booster. Unless one has a serious medical issue, anyone with a driver license has enough strength to stop a Mustang with manual brakes. My favorite upgrade was removing the brake booster. Dang car stops better than ever. Quote Share this post Link to post Share on other sites
lanky 44 Report post Posted August 28, 2019 I have to respectfully disagree with you RPM, if I ever drive my car hard for more than a few minutes IMO it's very tiring...leg shaking afterwards tiring. For cruising it's no problem at all. Before we get into a MC bore discussion, mine is sized correctly (1"). Leaves just enough pedal travel left when front brakes begin to lock. Quote Share this post Link to post Share on other sites
Viperpete 36 Report post Posted August 28, 2019 Id want a booster with a big horsepower application- no doubt. My car has manual brakes now- which is fine for around town- but I wouldn't want my wife to drive the car and have to worry that there could ever be an issue stopping in time. Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted August 28, 2019 A single diaphragm booster "pancake booster" may also interfere with the Z-Bar due to the larger diameter. I was told the Boss 429 brake booster would solve this problem. I will let the experts weigh in, but my Explorer mastery cylinder and Wiilwood distribution block mounted on the double diaphragm booster do not hit the shock tower. Quote Share this post Link to post Share on other sites
bryonbush 85 Report post Posted August 29, 2019 I’ve contemplated not using the booster but if I can, I’d like to keep it. I’m running an automatic transmission so I don’t have to worry about it possibly hitting the Z bar. I thought about using the MS out of a ranger or explorer as I’ve seen others using them but simply for cosmetics I wanted to go with the wilwood. Quote Share this post Link to post Share on other sites
Mach1 Driver 560 Report post Posted August 29, 2019 Why not get yours rebuilt- I believe West Coast Classic Cougar provides a service Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted August 29, 2019 We have a lot of our customers tell us the manual setup we have stops better than their old power setup 1 1 RPM and 69Stanger408 reacted to this Quote Share this post Link to post Share on other sites
bryonbush 85 Report post Posted August 29, 2019 4 hours ago, Mach1 Driver said: Why not get yours rebuilt- I believe West Coast Classic Cougar provides a service There’s nothing that needs rebuilt. The booster is only about two years old and works fine. But I’m working with wilwood now. They just released a more compact MS a few weeks ago. After talking with them, that’s what I’ll go with. It’s about a $50 difference between what I have now and that unit but I won’t have to mess with my booster. 1 barnett468 reacted to this Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted August 29, 2019 Hey Byron, Hadn't seen the compact Wilwood unit yet, if you get one, post a picture. 1 mwye0627 reacted to this Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted August 30, 2019 21 hours ago, bryonbush said: There’s nothing that needs rebuilt. The booster is only about two years old and works fine. But I’m working with wilwood now. They just released a more compact MS a few weeks ago. After talking with them, that’s what I’ll go with. It’s about a $50 difference between what I have now and that unit but I won’t have to mess with my booster. Don't forget to make sure you have the proper clearance between the booster rod and master cylinder. This is a critical clearance that few people think of checking. 1 RPM reacted to this Quote Share this post Link to post Share on other sites
bryonbush 85 Report post Posted August 30, 2019 Just now, barnett468 said: Don't forget to make sure you have the proper clearance between the booster rod and master cylinder. This is a critical clearance that few people think of checking. yes, ive made that mistake before. 15 hours ago, Vicfreg said: Hey Byron, Hadn't seen the compact Wilwood unit yet, if you get one, post a picture. wilwood 261-14963-bk is the part number. they just released it a few weeks ago according to the rep I talked to. once its installed ill post it up. Quote Share this post Link to post Share on other sites
Rsanter 152 Report post Posted September 1, 2019 I have already been there. i have a 69 conv. I upgraded to the willwood MC to find it is longer than the original and will not fit with the stock booster. the booster I used is from TUFF STUFF. Got it from summit racing. it is a non concourse version of the one used or the boss429 originally. it works great, leaves more room in that area and makes the car easier to work on in that area. bolts right on, but.... you will need to modify a spacer or slug that goes in the back of the MC piston for it to work properly with the rod in the booster. there is a tool to measure this with but I just did carefull measuring with my calipers. i also used my lathe to shorted the piece that came with the MC (for this purpose) to make it the right length. overall not too hard to do and overall a good upgrade. let me know if you need more info bob Quote Share this post Link to post Share on other sites
bryonbush 85 Report post Posted September 19, 2019 Things have been moving painfully slow on this. Last night the new master from wilwood showed up. This morning I got to work and the new master fits great. One caviot is the wire plugs for the pressure switch has to be removed before putting the master into place. But once its in place, you have plenty of room to work. I need to do the plumbing still and add the residual valve. Quote Share this post Link to post Share on other sites
Rsanter 152 Report post Posted September 23, 2019 That is a different or newer version of the willwood MC than I have. there is no way that one I got was going to fit Quote Share this post Link to post Share on other sites
bryonbush 85 Report post Posted September 24, 2019 3 hours ago, Rsanter said: That is a different or newer version of the willwood MC than I have. there is no way that one I got was going to fit You are correct. A whole new one that wilwood released a few weeks ago Quote Share this post Link to post Share on other sites
