Track forum general chit chat.

[//steve\\]

Originally Posted by slicer

I have a spread sheet documenting all of the weight loss changes that I made to my e92 that I intend to share with the community. It's just a matter of me finding the time to do a write-up. I have been weighing and documenting each item removed from my car over the past few years. I'm currently sitting at approximately 3250 lbs with 1/2 tank of gas. The car feels significantly better at the lower weight but there have of course been compromises made to street civility, sound, comfort, etc to get there.

Definitely interested to see your findings! And you have a DCT car which means you're starting with some extra weight.

I'm mostly interested in the simple stuff right now but I'm always interested to know the data.

[roastbeef]

i've been combing through parts diagrams for some time now. all i've done so far has been easily accessible nuts and bolts;
-strut brace hardware (two bolts, six nuts)
-license plate bolts
-intake plenum lid hardware
-wing hardware
-four nuts on rear exhaust hangers (i had extra nuts)

there is a body brace just behind the rear seats that has three pretty big bolts as well (i have a cusco brace back there). i have to find some time in the garage to take the bumpers off and do some poking around and measure some threads. my next titanium order will be pretty significant, so i have to time it right with mrs beef.

[fsmtnbiker]

Had the scale out yesterday.

Stock part weights:
Drivers heated/power leather seat 63.4bs
Passenger heated/power leather seat 63.5lbs
Stock battery 58.4lbs including mount
Rear brake caliper + bracket 9.5lbs

Aftermarket stuff I’ve weighed so far:
Akra Evo midpipe w/ cats and resonators 18.7lbs
Akra Evo catback 27.3lbs
Megan Racing catback 32lbs
Challenge Sport Xpipe w/ cats and resonators 32lbs
Deka ETX20L battery 15lbs
ECS rear brake rotor 20.1lbs
Stoptech 355 front rotor 17.0lbs
Stoptech ST40 front caliper+bracket 9.0lbs

I’ll weigh the back seat stuff soon, it’s all in a pile in my spare room.

[kyippee]

Speaking of the easier weight reduction parts... what's a good passenger seat that can fold forward and still reduce weight? I see Recaro Sporster CS can fold, but it's a bit more expensive than a random decision.

I'd like to keep folding capability so I can still carry wheels in the back seat of my coupe

[roastbeef]

Originally Posted by kpewpew

Speaking of the easier weight reduction parts... what's a good passenger seat that can fold forward and still reduce weight? I see Recaro Sporster CS can fold, but it's a bit more expensive than a random decision.

I'd like to keep folding capability so I can still carry wheels in the back seat of my coupe

i've thought of this as well and someone suggested loading the wheels in from the trunk.

[kyippee]

Seems like a PITA 😅 loading from back is what I'd do if I stripped the rear interior and did a half cage that allowed rear load like BW high angle

[fsmtnbiker]

Loading from the back without the rollbar was cake. It’s a little annoying with it, but still easy enough to fit 4 wheels/tires along with all my other junk in the car.

[Ximian]

My ST60 kit came in Sunday. Got it in yellow and slotted but the paint quality on the back of the caliper isn't great. Just a spot or two where it's lighter on the paint compared to everywhere else. Now to wait another 2 months until it's warm enough to install it.

What's the best way to get the air bubbles out of the lines after installing? I have Carly and the Bavarian Technic tool but I don't think either can activate the ABS.

[OG Shark]

Working on a solid 50lb race weight reduction myself...



It sucks

[//steve\\]

Originally Posted by OG Shark

Working on a solid 50lb race weight reduction myself...



It sucks

This is by far the hardest weight reduction mod.

I've managed to over the last 5-6 years ultimately lose about 50lbs and it feels much better. The worst part is unlike buying some new part you can't do this one overnight and seeing that initial progress feels like it takes forever. I can also now fit in a heck of a lot more bucket seats so that's a good thing

[Adrian g.]

Wing installed. Can't wait to see how it affects the car.

[StripclubDJ]

Originally Posted by Adrian g.

Wing installed. Can't wait to see how it affects the car.

That pic looks like a lot of AOA

Take side pic

[Adrian g.]

Originally Posted by StripclubDJ

That pic looks like a lot of AOA

Take side pic

Side pics.

I set it to max.... figured I'd start there and work backwards.

[StripclubDJ]

Originally Posted by Adrian g.

Side pics.

I set it to max.... figured I'd start there and work backwards.

My advice to you, is to level it flat.
And work from there.

That AOA would require a shove of a splitter.

That wing with your front end is already going to be understeer city

[Adrian g.]

Originally Posted by StripclubDJ

My advice to you, is to level it flat.
And work from there.

That AOA would require a shove of a splitter.

That wing with your front end is already going to be understeer city

I have seats going in this week. Figuring out the splitter, is next.

[jid2]

Originally Posted by StripclubDJ

My advice to you, is to level it flat.
And work from there.

That AOA would require a shove of a splitter.

That wing with your front end is already going to be understeer city

This. Even with the GT4 splitter flat is about correct. More AOA requires a serious splitter.

[StripclubDJ]

We run 6 inch splitters with all wings level

Your car will lift the front tires on long sweepers with the AOA like that lol

[admranger]

Originally Posted by StripclubDJ

We run 6 inch splitters with all wings level

Your car will lift the front tires on long sweepers like that lol

Put “add fiddle brakes” to “to do” list.

[OG Shark]

Originally Posted by StripclubDJ

We run 6 inch splitters with all wings level

Your car will lift the front tires on long sweepers with the AOA like that lol

What AOA range do you find works with the 6" splitters you run? Working on our setup here as well & about to start experimenting with splitter length.

[StripclubDJ]

Originally Posted by OG Shark

What AOA range do you find works with the 6" splitters you run? Working on our setup here as well & about to start experimenting with splitter length.

Well if we are talking e9x, and it's 67 in span,
Zero AOA
If 61 then that varies , takin the driver preference and tire combination and all factors

I guess it all comes down to driving style.

[OG Shark]

Originally Posted by StripclubDJ

Well if we are talking e9x, and it's 67 in span,
Zero AOA
If 61 then that varies , takin the driver preference and tire combination and all factors

I guess it all comes down to driving style.

Yeah definitely comes down to driving & each car is certainly different - was just curious what you were finding works for your cars. Doesn't take much on these cars for the rear to overpower the front. Thanks!

[Adrian g.]

Originally Posted by StripclubDJ

We run 6 inch splitters with all wings level

Your car will lift the front tires on long sweepers with the AOA like that lol

LOL

Originally Posted by StripclubDJ

Well if we are talking e9x, and it's 67 in span,
Zero AOA
If 61 then that varies , takin the driver preference and tire combination and all factors

I guess it all comes down to driving style.

Mine is a 61", so it doesn't stick out as much at the 67", which is huge btw. Also, I have 11" pedestals, which puts the wing just slightly below the roof line. thus the more aggressive AOA...