z31maniac

Another quick one as I'm trying to quickly bring myself up to speed on the points rules:

FM frame rails and butterfly brace +3
From Arms will also be an additional +3
V8R front upper control arms +4 (I'll definitely put stock back on with poly bushings)

Correct?

I'm willing to take the +2 on my sport brakes (although I'll switch them out for 949/TSE fronts and the new FM rear kit) to knock some weight, longer pad life and the increased feel from fixed position calipers.

+7 for the 949 Big Grip kit (which should also lose some weight over my current +7 poverty suspension)

And at some point add a Torsen.

I figure the car sits now with 90whp and 2350 with me in it. A proper 1.8 will be next winter's project.

Savington

iTrader: (31)

Almost. You take +3 for all chassis stiffening parts, regardless of how many you do, so the FM rails/brace and Frog Arms are all under the same +3. V8R arms are +4.

FYI - FM beat us to the punch, but we've been developing a similar rear kit for several months now (4-pot Powerlites for the rear). The main difference will be that our kit will include bespoke 2-piece rear rotors and thus be around a pound lighter per side.

z31maniac

I'm happy to hear that. I really didn't want to give up the extra feel the Frog Arms gave the front end. If I also wanted to do the RB Control arm brace and FM Cannon brace, do those continue to fall under all "chassis stiffening" +3, or are they additional since they are on the subframes/suspensions?


I'm not quite ready to buy brakes yet, and I'd prefer to buy both from one place.......and if they will be a bit lighter.

The brakes should be good for what 8lbs up front and ~6 out back?

Savington

iTrader: (31)

[QUOTE=z31maniac;1023918]I'm happy to hear that. I really didn't want to give up the extra feel the Frog Arms gave the front end. If I also wanted to do the RB Control arm brace and FM Cannon brace, do those continue to fall under all "chassis stiffening" +3, or are they additional since they are on the subframes/suspensions?[QUOTE]

The FM Cannon brace should be included in the chassis +3, but anything attaching to the suspension is going to likely add more points.

I'll be perfectly honest: No truly competitive PTE car takes points for any chassis bracing.

Depends on exactly what brake setup you're coming from. Should be closer to 8 out back, though. The original design goal was to shed as much weight as possible while maintaining bias similar to what you'd get out of an 11" Sport rotor setup (our kit is based on a 10" rotor). The only lighter setup would be something based on a 2-piston caliper, but the pad size reduction was a little too much for our comfort.

z31maniac

^THanks for all your input on this thread, it's greatly appreciated.

I figure the car will likely end up in TTD, I don't really want to pull the stiffening stuff back out of the car. It made a huge difference in feel for me (coming from track sport bikes).

The car currently sits on NB Sports brakes with centrics and Carbotechs'.

When do you suspect you will have the rear kit ready? I've also converted over to the Sport master cylinder/booster setup as well.

Oscar

iTrader: (2)

Will there be any sort of (mechanical) handbrake on this rear kit?

Savington

iTrader: (31)

Wilwood does make a Powerlite caliper that can be adapted for a handbrake, but we're focusing on a handbrake-delete kit right now. The primary goal is to shave weight, and retaining a handbrake doesn't fit into that goal.

Oscar

iTrader: (2)

*****. Was hoping for some mechanical backup while getting rid of some weight and single piston sliding pin ------ry.

Seefo

iTrader: (5)

probably shouldn't be using your handbrake at the track anyways. I am assuming this kit is probably aimed at the track only guys.

Handy Man

If you want your track car to be street legal most states require a emergency parking brake.

z31maniac

They also require no tampering with emissions systems, use of DOT approved seat belts and not removing the air bag, etc.

Handy Man

Haha, ok... good point, but in all of the inspections I've done they don't actually check any of those things. they DO check that the e-brake works (obviously this changes state-by-state)

z31maniac

I only bump this up as I ran across an older post of yours saying the lack of a mechanical ebrake a safety issue and how it saved you one time on track.

Have you changed your mind on this?

chris101

iTrader: (7)

I just saw this post and it made me LOL because for 5.5 years, we drove around (summers only during track season) in a 1995 Infiniti G20 that had no cat, no airbags, no factory seat, but it did still have the DOT seat belts along with 6pt belts and we did leave the parking brake)

...Illinois is not only a non-inspection required state BUT if you have a 1995 or older car (OBD1) you never have to go for emissions test so we 'stunk out' people street driving a g20 (haha)

Savington

iTrader: (31)

There are a lot of people who are willing to take that slight added risk in order to shave a bunch of weight out of the rear brakes. I'll run the 4-pot rears on Theseus, but Rover will keep stock calipers.

z31maniac

Fair enough. From what I'm reading from Keith and the power of the ebrake setup (at least on those Wilwood calipers) the ebrake function isn't particularly strong.

Savington

iTrader: (31)

For SCCA legality, it gets you by. Our kit was set up for weight weenies from the start, so the assumption is that if you're paying the money to shave ~3lb per side on just the calipers and another 1.5lbs total on the rotors, the weight of the e-brake cables and the handle inside the car wasn't going to make the cut.

z31maniac

Wow, 9lbs of weight loss off the rear brakes is pretty damn impressive.

I thought I read in another thread you mentioned you were learning something with the rear kit that would translate to more weight savings on the front kit.......am I remembering that correctly? If so, when could we expect the improved front kit to come to market?

I'm completely digging the idea of pulling 25+ pounds out of the car with the improved brake setup and XIDAs I'll order this season vs the old Sport take/Vmaxx setup.

Savington

iTrader: (31)

We're replacing Wilwood's hats with our own. Not necessarily reduced weight, but reduced cost.

Oscar

iTrader: (2)

What would that do for rotor availability? Will the wilwood rings fit your new hat or would it be a bespoke combination? I like the fm rear kit since it uses locally available oem rotors. Maybe not a huge deal for you US guys, but I like not having to wait for essential brake parts when I upgrade to the 11.75" fronts and powerlite 11" rears. (W/ or w/o handbrake).