S54 swap questions and concerns

[burkey001]

Let us know what we can do to help. We now carry the wilwood pedals and master cylinders and can make a package deal with our bracket.

if only you had a RHD pedal box option

[nando]

is massive's pedal bracket thing available? it's not on their site.

I want to at least try the booster delete alone, but not with the rest of the brakes stock. I'm thinking something like above would be much better though.

[Jb325is]

I'm sure you know, but I have the booster delete with the e46 m3/e39 540i brakes and while it is decent, it's not great. I have Ferrodo pads in the front and stock pads in the rear, maybe I need to adjust the bias more or get some more aggressive pads (PFC 08 or somthing?). I also had a pretty disconcerting issue with the pedal rod coming out of adjustment, so I think I'm going to dis-assemble and re-assemble this weekend to ease my mind about it. The dual MC's would certainly be an upgrade over my setup, but the extra cost is pretty substantial.

[gills]

Let us know what we can do to help. We now carry the wilwood pedals and master cylinders and can make a package deal with our bracket.

I've already PM'd you guys about pricing. Great deal for sure!

Can you actually provide some more pictures of the setup in this thread?

[nando]

I'm sure you know, but I have the booster delete with the e46 m3/e39 540i brakes and while it is decent, it's not great. I have Ferrodo pads in the front and stock pads in the rear, maybe I need to adjust the bias more or get some more aggressive pads (PFC 08 or somthing?). I also had a pretty disconcerting issue with the pedal rod coming out of adjustment, so I think I'm going to dis-assemble and re-assemble this weekend to ease my mind about it. The dual MC's would certainly be an upgrade over my setup, but the extra cost is pretty substantial.

I'm planning on doing a BBK, probably massive's. with the exchange rate it's like a 25% discount. :)

was curious about the pricing of his bracket/MC setup. Would be really cool if those masters had dual ports because I need a 2nd one for the MK60 DSC pressure sensors..

[gills]

is massive's pedal bracket thing available? it's not on their site.

I want to at least try the booster delete alone, but not with the rest of the brakes stock. I'm thinking something like above would be much better though.

It's not listed on his site. Email him. You have to procure the balance bar and MC's, and you reuse the stock clutch pedal by trimming it up a bit. You do get a nicely CNC'd brake pedal. Might want a remote reservoir as well.

I'm sure you know, but I have the booster delete with the e46 m3/e39 540i brakes and while it is decent, it's not great. I have Ferrodo pads in the front and stock pads in the rear, maybe I need to adjust the bias more or get some more aggressive pads (PFC 08 or somthing?). I also had a pretty disconcerting issue with the pedal rod coming out of adjustment, so I think I'm going to dis-assemble and re-assemble this weekend to ease my mind about it. The dual MC's would certainly be an upgrade over my setup, but the extra cost is pretty substantial.

What size MC are you using and what are the piston diameters in those calipers? A more aggressive pad should definitely help.

I was going to use E36 M3 front calipers (60mm) and M roadster/coupe rear calipers (40mm, same as E36 M3) and they only require a theoretical 100lbs input force at the pedal for 1.0g deceleration using a 3/4" MC, 6:1 pedal ratio, and aggressive street pad CoF. 75lbs-100lbs is the target according to literature referred to in the following, very useful spreadsheet found here that I used to back up my calcs (FredK shared this with me, who happens to have Massive Lee's pedal setup that I shared):

http://www.gt40s.com/forum/gt40-tech-chassis-brakes-tires-wheels/35856-spongy-pedal-new-wilwood-setup.html#post354616

Using a 5/8" MC is about 70lbs. I'd choose the 3/4" because I personally wouldn't want a super long throw, and sensitive brake pedal, which can be attributed to "mushy" feeling brakes.

[FredK]

I'm planning on doing a BBK, probably massive's. with the exchange rate it's like a 25% discount. :)

was curious about the pricing of his bracket/MC setup. Would be really cool if those masters had dual ports because I need a 2nd one for the MK60 DSC pressure sensors..

Massive lists most of their current products on Facebook lol

Tilton 76 series MCs have dual outputs. They're a little more expensive than the 75 series.

[nando]

I see that. nice!

so, two of those is cheaper than 1 stock 325ix MC. :|

[FredK]

(FredK shared this with me, who happens to have Massive Lee's pedal setup that I shared):

http://www.gt40s.com/forum/gt40-tech-chassis-brakes-tires-wheels/35856-spongy-pedal-new-wilwood-setup.html#post354616

I talked to gills, which was very helpful. I actually put the wrong value in my spreadsheet for floating or fixed caliper, which doubled my theoretical input forces! But now that my values are correct, I'm at 55 lbs with a .54 mu to get 1.0G deceleration.

I feel pretty good about my brakes now, with 57mm front 40mm rear calipers, 280mm front rotors, 282mm rear rotors. I had 54/38mm calipers and just wanted to reduce effort a touch. With my old setup of 5/8" front, 7/10" rear, I didn't have the placement accuracy I really wanted. I would start braking easily 100 feet before I had to in order to get to the apex repeatably at the right speed, which really leaves a lot to be desired for chipping away at time and getting more consistent.

We'll see, though. The travel IS a bit longer, and there is more knockback than there used to be, as the system is more sensitive to it. I'll be at the track in a few weeks and I'll have a better idea on how this iteration works for me.

[jink0619]

Thanks for the boosterless info guys, very useful for those who wants to go this route.

[jink0619]

I'm curious to see your after removing the plastic and rubber from the wire harness


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Here's what I did, for those using the e46m3 harness, wires and replay will fit in the e30m3 cover. I cut off all the rubber and plastic box from the harness and taped it up nice and tight.

*I test fitted the 2002 booster and Manifold, everything fits good.

[WannaBe30]

Nice!! Looks better than mine!

So there's a booster somewhere under all that?


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[Jb325is]

It's not listed on his site. Email him. You have to procure the balance bar and MC's, and you reuse the stock clutch pedal by trimming it up a bit. You do get a nicely CNC'd brake pedal. Might want a remote reservoir as well.



What size MC are you using and what are the piston diameters in those calipers? A more aggressive pad should definitely help.

I was going to use E36 M3 front calipers (60mm) and M roadster/coupe rear calipers (40mm, same as E36 M3) and they only require a theoretical 100lbs input force at the pedal for 1.0g deceleration using a 3/4" MC, 6:1 pedal ratio, and aggressive street pad CoF. 75lbs-100lbs is the target according to literature referred to in the following, very useful spreadsheet found here that I used to back up my calcs (FredK shared this with me, who happens to have Massive Lee's pedal setup that I shared):

http://www.gt40s.com/forum/gt40-tech-chassis-brakes-tires-wheels/35856-spongy-pedal-new-wilwood-setup.html#post354616

Using a 5/8" MC is about 70lbs. I'd choose the 3/4" because I personally wouldn't want a super long throw, and sensitive brake pedal, which can be attributed to "mushy" feeling brakes.

My calipers have the same size pistons, and I'm using a stock late model MC, so 22mm I believe? My pedal feels great, the travel is pretty nice, I just don't have a lot of bite. I did have the stock brakes on the car when I first did the booster delete, so I do have that to compare it to and they are definitely a lot better than that. Stock brakes with booster delete = super hard pedal

[jink0619]

Sitting on the fuse box is the stuff I cut off. Still have to extend the Maf connection.

[jink0619]

Nice!! Looks better than mine!

So there's a booster somewhere under all that?


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Thanks man, yea it's in there, amazing how there's a booster that small huh? Lol need to have the shaft modify and paint the booster to make it purdy.