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Old 12-28-2014, 08:48 PM   #64
Celadrielas
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Ok, so let us start with some basics of physics. A) if you want to make a car stop faster, accellerate faster, or turn faster -- Put that bitch on a diet. She's fat. Plump is not pretty with any stock car that is a "track car". B) Rotational, sprung, and unsprung weights matter and will absolutely change the way a car handles and feels.

Now, I did read so I know this is not a dedicated track car. That is an important thing because that makes everyone's advise sound advise. Using the porsche example from page 1... I've been there and the struggle is real. Put a 6 puck clutch into a civic and then get stuck in traffic in southern california. You have two realizations. The first, you suddenly hate that clutch. The second, you suddenly realize you'll need to start working out your right leg more because that left calf is going to look beast. It's a real struggle.

Stating estimated numbers that are high, we have a 3000 lb car. I weigh 196 lbs @ 6'0" and I am unsprung weight. remove 130lbs of unsprung weight and I am suddly 66lbs. But the weight balance has changed depending on where you pull that weight from. If you pull it from the rear (Rear seats, jacks, spare, floor mats, muffler, ect) you suddenly have a front bias vehicle. So this is what is happening in the example on page 3 of the driver who's mountain vehicle steps out more. Your tail end is lighter so the front end wants to throw it around.

Now, let's use round numbers for power (also over stated for simplicity). Let's say you have a 3000 lb vehicle with 200 hp. You add 30 hp with your OFT. Fantastic. 15% gains in power means you're 15% faster, right? Well... no. But you will feel it and the difference will be noticed even at stock weight. Horsepower is not linear to speed. This is because air has mass. (This is assuming vehicle still takes in all fuel and air as needed and is properly tuned.) Air may feel like a bed sheet of resistance at 50 mph, But at 500 mph it's wall. Sadly more power does not always = more speed.

So here's my suggestion... Do research within yourself to figure out what YOU want from the vehicle. (I know this post is from 2013, but info is relavent for all current readers too). If you want to build a track only car, shit like a stereo, back seat, muffler, floor, ect. might not mean a damn thing to you. But if you're in a daily driver only, those luxaries suddenly seem to matter a lot.

Next, do your research on parts. What is the budget you want to spend (Determined before parts are selected) and what is the most bang for that buck that you would like to spend to achieve the goal that you would like to see with that vehicle.

It's your vehicle, and there are different strokes for different folks. So do you as only you do and drive the vehicle that makes your heart and wallet happy. If you want to keep the current weight balance front to back, remove 15 lbs from the front and rear at the same time. But remember to try and keep it balanced left to right in the same way.
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