there is a thread on an M3 forum on a step by step to lose about 300 pounds in that car or so. Some of it is extreme, some isn't.

I do happen to notice a difference when my gas is low (the rear ends breaks lose very easily too). I have added a sub and an amp and better speakers to my car, but I took out ALL the stereo junk which was pretty light wt, except the stock head unit was waaaaay heavier than my alpine. I can remove my sub, it is on rails similar to a car seat and slides right out when I want to save wt or need more room. I also saved wt with test pipes, will be gettting the nismo exhaust and UR pulley. My wheels and tires are 9 pounds lighter than stock total, but I bet than is negated by the wt being further out to the parameter.

for guys that take out the spare tire and tools, what do you do, bring a can of that tire patch stuff with you just in case???

 

the stock re040s are run flat...so why bother with a spare. i just dont care if i get a flat. ill call up my buddy and pick up my spare from my garage.

 

AAA gets $50 a year to pick me up wherever I am - on a flatbed too.

What the hell do you do with your $1600 (retail replacement) Track Rays rim if you do put on the spare? I sure as hell am not going to leave it and come back for it, and I'm pretty sure it's not going to fit at all under the hatch, even with it wide open...

 

Can anyone shed anymore info on this swap? It seems like a nice alternative to the vq35 in terms of rebuild and parts availability.

 

What car uses the SR20DET btw?

 

The Silvia in Japan used the SR20DET. I thought you were a know it all Phile. j/k
If you have lots of funds, you can do this swap. It's not easy Chris said and took him about 5 weeks.

 

remember when you remove weight in front of the tires its more of an advantage, but in a 350z its a lil bit harder.

 

MY CAR!!! whoooo, it has a redtop sr20det but a blacktop is in the mail, should be extra fun!... check my site for more info

 

HEY! I'm glad you brought that up. I didn't type "know it all". Matter of fact, I didn't type anything for that. Is it possible a moderator put that there? The only other thing I can think of is that my GF put it there...put that's a looooooooooooooong shot.


Anyone have an idea?

 

IMO, swapping-out the VQ35 for a 4-banger qualifies for the ridiculous-idea-of-the-week award. (Although, it's better than a small-block-swap, which some neandertal will no doubt attempt one day.)

 

somebody has already tried to swap the stock battery for an optima gel battery. Saving was about 9 lbs. I say moving it to the rear axle is the way to go. then you can have extra weight (traction) on the rear wheels yet still maintain less weight by taking out your spare/jack.

windshield wiper fluid is 8 lbs of extra (1 gallon) weight. That is an easy one and is in front of the front wheels.

remember by dropping all this weight you do play with the weight balance. in stock form the Z/G's already have too little traction. I stripped my trunk, yet ran worse quarter times (14.6 vs a 14.4) when I was stock on stock rubber. So unless you gots better tires than stock, leave the isht in your trunk.

if you lighten your exhaust you can put lowering springs or coilovers to make up for the higher center of gravity.

 

I wouldent be so sure of that, they put a toyo 4 banger in a supra in Top Speed's car if I remember correctly and it was faster and less powerful than the I6 2jz thats cause its lighter and lower center of gravity helped it acheive a higher top speed than the extra power of the heavier and less centerd I6 could achieve.

 

Oh, I'm not saying a person can't engineer a car that is ultimately faster w/such a swap -- I just consider it nothing more than a technical exercise, and a deliberate defacement of beauty. It violates Lateapex Axiom #1: always opt for more, smaller cylinders.

 

Drag Limited is right. Even in the JGTC, Supra's were running the 3S-GTE cuz it was a lighter engine than the 2JZ-GTE and you can still make lots of power from them. So unless you're just drag racing, I would be amused to see how you fair against TopicsII on a road course.

 

I was under the assumption that the spare tire added weight in the rear for traction and weight distribution. When the engineers design cars, don't they consider the weight of everything....even passengers, spare tire, jack, and gas for optimal performance? Kinda like how plane manufacturers have to consider the weight of wiring and screws for safety. I understand the ideology of reducing weight but when is it doing more harm than good. If I spend $5000 to get lightweight wheels and tires to save 40lbs, wouldn't that $5000 go a lot farther in adding FI to add 100hp so that 40 addtional pounds don't mean a thing ? Will removing the spare put less weight in the rear creating less force on the rear tires thus create less traction? With the removal of the spare, will the weight distribution change thus changing the center of gravity? This is the only reason why I haven't removed my spare yet.

 

u have to also keep in mind that straight acceleration isn't every thing.
when a car is lighter, the braking and cornering will also improve while ur accelration improves!

 

But without the right amount of weight distribution (especially in the rear) your rear end would tend to kick out more around corners without the right weight pushing down on the tires. Unless or course you put softer springs in the rear to compensate.

 

How heavy is a 2jz?

 

Damn heavy.

 

in japan aren't they swapping the skyline engines with the vq in the racing circuit? ...opposite of here.

ps. was the gtr ever rear wheel drive?....i'm not too familiar with the skylines but i thought they were awd ...or both in different versions