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:iagree: Urethane feels so nice. |
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who needs interior?
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Ok so the highlighted items above are what I am interested in. You mentioned you did most of this stuff already? Any additional input would be awesome. Like pics if its custom or places to buy if its vendor related and what weight savings? As far as the brakes and battery I am already going that route. Thanks for the reply! Edit: I will be happy with a 150 lbs (100 lbs is prob more realistic) ish drop spread evenly accross the front and back but preferably more from the front (unrealistic). I say this so I don't have to worry to much about corner balancing the car (YET!) as I don't have coilovers (YET!). My goal is to shed weight from the front and put a wider tire in front with added camber (in front). Well wider tires all around but make it so the car is closer to squared out...Front 265 and rear 285. The requirement is the car must stay functional as a daily driver (I.E. AC). |
Well, the best gains in terms of cost effectiveness are still the basics. Shamu's list includes a lot of extreme measures that are going to cost a lot per lb saved (and no, I don't think he's done most of them).
The most cost-effective basics for dropping weight on a street machine: 1) Zero-cost stuff: Get rid of the windshield washer fluid reservoir system and its tubing/jets, get rid of the top engine plastic cover (if anything it traps heat). 2) Battery reloc + sub/spare removal. Remove heavy battery from front, remove heavy subwoofer and spare tire from rear, install light battery in trunk area. Net drop is 64lbs, 35 from the front and 29 from the rear. Cost is one Odyssey PC-680 battery, plus mounting and cabling hardware and some labor time. http://www.the370z.com/diy-section-d...tml#post211209 3) Lightweight wheels+tires. I went with 18" Forgestars and Continental DW tires. There are lots of options, but it's rotating unsprung mass and it's worth way more than gutting sprung weight on the car. 4) Exhaust system. Look into options like Fast Intentions - good gains and a nice weight drop from the factory system. If you combine it with their long-tube headers it's even more weight drop, and more of it up-front. Once you get those basics knocked out, then start evaluating the rest. Whatever level of interior stripping you can tolerate on the street, and lighter racing buckets are both reasonable options. |
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Prob what I will do is not relocate the battery but I may get the Odyssey and place it in the stock location. I'll remove the spare before every race but leave it mounted as a precaution. I used to have the Forgestars on the Rx8...fantastic rim which will net us about 3 to 4 lbs of weight savings each wheel but I am not sure I want forgestars on the Z...I need to see it in person (Still looking). As far as exhaust I am not sure the savings in weight in this location is worth it or not due to the difference in HP with lets say the Stillen exhaust. Not to mention I don't want to make the weight distribution any worse lol but the headers are a definate. Has anyone tried out a lighter flywheel? |
Caveman, almost all top quality exhausts will net the same HP gains (especially after a tune). The only thing after that is weight & sound really or if you have future plans and are building for that.
A lot of people have a lightweight flywheel, I do not currently but I am sure others can chime in on good/bad. |
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I had the stillen and now have the FI exhaust. The FI weighs far less and with way less bends/restrictions it does flow more freely.
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^ What he said. I also did Stillen then FI. The FI is built better, fits better, obviously has a smoother flowing shape, and weighs less than stock (Stillen weighs more). None of the decent exhausts on this car differ appreciably in performance, and if anything FI's catback is one of the best-performing ones out there. However, Dynos will be Dynos, and all the gains are within the margin of error as far as internet comparisons go.
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Lots of money, but how about the Litespeed titanium exhaust? At $3K it is advertised at 14 pounds, and also +14 hp over the nismo exhaust. I never knew if that meant it was only tested on a nismo, or on a coupe with first the nismo exhaust and then the Litespeed exhaust.
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Question for WSTAR: How much does the plastic engine cover weigh? Does it serve any purpose other than cosmetic?
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