Ecotec le5 Turbo 2.4 Build (Page 22/28) dobey MAR 02, 03:36 PM quote Originally posted by jediperk: One of those brail batteries would lose a fair amount of weight too. 50/50 weight is not what you want anyways. He has the weight distribution about as ideal as it gets already. Remember, when you hit the brakes the weight transfers forward and when you hit the gas its already where you need it. Depends on what you're doing with it. If he wants to road race, I'd maybe suggest trying to get the left/right balance a bit closer to 50/50, and see how close to the center you can get the CG, and how low you can get it too. Getting perfect weight balance may not be optimal in all situations, but for a track car that you're going to turn fast in both directions, it will get you the best balance of control when running around the track. It will of course be very difficult to get that in a stock Fiero chassis though. What's optimal will of course be different for oval, banked, straight line, etc… Unfortunately, there's a lot more to being fast and getting the right balance, than just losing or moving weight. jediperk MAR 02, 03:51 PM It depends on what he is going to do suspension wise. You can weight jack the suspension for twisty tracks easy enough and I would anyways. The mass is already centered about as well as it can be in a production car as is. Less weight is always desirable in my mind as its less mass to bring to a halt, less mass to get in motion and less mass to change directions with. 4thfiero MAR 02, 05:05 PM Lots of good input! As promised, more pics! It's warm out today. Steven Snyder MAR 02, 06:40 PM quote Originally posted by 4thfiero: Update: Cold Start is fixed! Also got my car weighed...battery is still in the back, i will change that later and re-do. But for now here's where i am at. Without me in the car: lf: 636 rf: 593 lr: 761 rr: 733 front: 45.13% rear: 54.87% total: 2723 With me in the car: lf: 696 rf: 620 lr: 820 rr: 777 front: 45.18% rear: 54.82% total: 2913 not bad? Nice. How much fuel? Your front-to-rear weight distribution is pretty good. Your left to right balance is quite bad though. You should try to get less than 1% difference from side to side... i.e. 51/49 or better. What springs are you using right now? Was the floor level, and was the ride height even from side to side? Here are some good tire size sets that are close to your 45.1% / 54.9% front-to-rear weight distribution. The first two are the best. Front: 225/40/18 Rear: 275/35/18 (45.0% / 55.0%) Front: 215/45/17 Rear: 265/35/18 (44.8% / 55.2%) Front: 205/45/17 Rear: 255/40/17 (44.6% / 55.4%) Front: 215/45/17 Rear: 255/40/17 (45.7% / 54.3%) Front: 215/45/17 Rear: 255/35/18 (45.7% / 54.3%) 4thfiero MAR 03, 12:43 AM About 1/4 tank of fuel My suspension needs to be replaced, which is why i posted about the JRZ rs pro kit. The front springs are cut to lower the car an inch or so. (I didnt do that) and the rear is stock ride height. The scale used was a professional Intercolm E-Z- weight scale mechanics use. It was level. What can I do to improve side to side weight distribution??? Whats your weight distribution like Steven??? Thank you for the tire sizes! 4thfiero MAR 03, 12:44 AM Also Steven, im having Bensopra Motorsports help me out with a custom aero kit. Big wing, chin splitter, under carriage diffuser into a rear diffuser. Stuff like that. Steven Snyder MAR 03, 02:47 AM quote Originally posted by 4thfiero: About 1/4 tank of fuel My suspension needs to be replaced, which is why i posted about the JRZ rs pro kit. The front springs are cut to lower the car an inch or so. (I didnt do that) and the rear is stock ride height. The scale used was a professional Intercolm E-Z- weight scale mechanics use. It was level. What can I do to improve side to side weight distribution??? Whats your weight distribution like Steven??? My weight distribution, as last measured (with a 140-lb driver) was: Left front: 655 Right front: 595 Left rear: 833 Right rear: 837 Since it was weighed I have reduced weight in the driver area by about 30 lbs by means of a lighter seat and removing the carpet. Since the driver is the heaviest thing you can move around a bit (with the next one being the battery), let's look at how driver weight is distributed. Driver weight distribution in my car: Front left: 36% Front right: 11% Rear left: 38% Rear right: 15% Front: 47.5% Rear: 52.5% Left: 73.8% Right: 26.2% Driver weight is distribution in your car: Front left: 32% Front right: 14% Rear left: 31% Rear right: 23% Front: 45.8% Rear: 54.2% Left: 62.6% Right: 37% It looks like your weight is already more evenly distributed than mine, so I'm guessing your seat is pushed pretty much all the way back. If you can move your seat a little closer to the tunnel, that's probably the only other thing you could do to help with the weight distribution by moving the driver. A few things other things I can think of to move static weight distribution toward the right on a Fiero: 1) Lightweight driver's seat 2) Lightweight steering wheel 3) Remove carpet on the driver's side 4) Replace gauge pod with a lightweight gauge panel 5) Lightweight air intake plumbing (not in your case) 6) Single-outlet exhaust on the right side of the rear fascia 7) Move auxiliary components (oil cooler, intercooler, remote oil filter mount, ignition coils, accusump, etc) to the right side of the engine bay 8) Lightweight clutch and flywheel 9) Move a front-mounted battery to under the passenger side headlight bucket 4thfiero MAR 03, 03:27 AM Your right, my seat is all the way back, im 6'2-6'3'' I have stock Fiero seats, i was considering getting lighter seats but was worried about how that would change the drivers sitting height, especially if i have to wear a helmet while racing, i dont wanna keep hitting my head. The stock seat makes my head fit comfortably with 2-3 inch clearance. Is there an aftermarket seat that will allow me to stay at the same seat height (or even go a touch lower) thats lighter and will allow me to move the seat closer to the tunnel??? i have a momo light weight steering wheel, fidenza 8 lbs flywheel, and lightweight clutch. already...moving the exhaust is a good idea but that will interfere with my aero plans...its in the middle of the car as u can see in the pics. Most thing were moved to the right side of the engine bay or behind the passenger back seat (relays, new ecu my stereo amp ect.) THE Battery...i have an optima yellowtop for that nice deep cycle action...im a computer tech/musician and car enthusiast. Music (GOOD QUALITY sound) is important to me. So i need a good battery that can power all my stuff. Is it possible to move my optima battery to where u suggested? Does that mean removing my headlights for good? Formula MAR 03, 08:30 AM How close do those tail lights fit? They look good. dobey MAR 03, 10:00 AM quote Originally posted by 4thfiero: THE Battery...i have an optima yellowtop for that nice deep cycle action...im a computer tech/musician and car enthusiast. Music (GOOD QUALITY sound) is important to me. So i need a good battery that can power all my stuff. Is it possible to move my optima battery to where u suggested? Does that mean removing my headlights for good? I don't think you'll fit a full size battery under the headlight bucket very easily. You could put a small Braille battery up there, like fieroguru did with his build. You could put a second battery offset to the right up front as well. Depending how much audio equipment you're going to run, you probably also want a higher output alternator. You could also get a set of the projector housings from doublec4 on here, and get a little more room under the headlights, as they get rid of all the mechanical bits, and mount to the hood. They'll also give you better aero when you need the lights on. With them, it might be possible to fit a full size battery under the headlight.