thanks for the info i will keep you updated

 

no prob...good luck on what ya do

 

I beat GT3's all the time with my Silvia... in GRAN TURISMO.

Seriously, that's a pretty ambitious project you've got there, but a GT3? I think that's beyond the boundaries for a "streetable" 240SX. Simply from an engineering standpoint, Porsche must have spent millions on refining the GT3 into the powerhouse it is... powerhouse not just in straightline, but track duty as well. The technology alone is 5 years ahead of the last S14 chassis.

Then again hell - a Neon SR-T is turbo'd, a Tiburon has a V6 and a 6-speed... but I'd rather pimp my 8 year old 240SX than be caught in one of the above-mentioned

 

i have to make some what impossible goals becuase, i want this car to have a good overall balance not just be fast in a straight line.

if you guys watch best of motoring (evo strikes back) theres a evo in there that they say that can beat a gtr. sometimes you have to pick a platform to emulate to get good results. now a 4 cylinder beating a inline 6 come on!!!

but then again the dodge srt4 is the 2nd fastest car in the dodge lineup so who's crazy.

but if you were out to beat this car what would you use?

 

Unfortunately, there is no 'formula' to get the 240 to these performance numbers. Approaching the Porsche in handling is going to require a lot of testing and tuning on your part.

Even though you're not building a track car, you would probably have to spend a decent amount of testing time on a track measuring tire temps and lap times to get your settings sorted. Depending on how 'perfect' you need the car to be, this could easily become the most expensive part of the project.

I also think that to get anywhere near te Porsche you will need more than a front and rear STB. You will probably want to brace the chassis quite a bit to make it stiffer. Seam welding the underside of the car would be the bare minimum - and can take a considerable amount of time and a whole load of effort.

To reduce weight, you would want to replace all panels front of the A-pillar with fibergalss or cf (please paint it) panels. Possibly ditch the front bumper support. Lightweight battery relocated to trunk.

If you get the car to ~2600 pounds or so, you should not require THAT much power to match the acceleration numbers of the Porsche. I would probably recommend the SR20DET for a power plant for its size and weight. For a broader power band you may want to build and turbo a KA (the extra 20% displacement does make a difference in where the power comes on).

I'd say it could be done, and that it is worth it considering the cost of other cars capable of that performance. I'll bet that most of the wrench work could be done by you - and if you have a welder and the time then the chassis bracing could be done cheaply as well.

It comes down to tuning that suspension... which could be a hit (cheap) or miss ($$$$) proposition.

-Justin

 

More than likely i will use a s13 instead of a s14 because if i smack it into the wall i would not feel to bad. i plan on using a coupe (if i can find a clean one!!!) and i was defiently doing some welding (for sure) a couple of years ago there was a s13 in scc that was in japan that had the ca18DET motor i didn't care for the motor but he welded is frame A LOT. i was impressed.

the tuning i don't mind thats the fun in building the car. i am in no hurry to do this i wanted to buy a new car but nothing out there catches my eye. ok i am lying but the evo vlll/350z will make me run my wallet dry i just can't let that happen. i refuse to pay a car note.

 

I would use a Saleen S7 to beat the car, hehe. lol

But realistcly, This is a hard task to accomplish. Both cars are in COMPLETELY different areas of the automotive world. You know what would be a good idea...going N/A KA? If you do the proper weight reduction and proper tuning on the motor (With upgraded internals) You can see 240+HP and lots of torque and no lag . I dont know the numbers on the GT3 but yea...once again good luck with w/e you choose to do

 

A 240hp n/a KA will have more 'lag' than a turbocharged one.

To get that output (has anoyone even hit 240hp on a streetable n/a KA?) would cost more than doing 240 at the wheels turbo, and have a shorter usable power band higher in the rev range.

If you ask me, waiting for the power to come on at 4500+ RPM qualifies as lag.

-Justin

 

http://www.race-cars.com/engsales/ot...59606209ss.htm
Something to look up to

 

I believe that's similar to the Nasport motors - about 270hp at the crank with the side draft carbs, but completely un-streetable.

-Justin

 

Uhhh....basically every GT-R tested in Best Motoring is a completely stock GT-R. Do you know that they output about 320 horsepower in reality, and once you do a few basic bolt ons, you're in the 400+ range? The EVO that beats the GT-R is most likely a stripped, caged, nearly unstreetable car.

The SRT4 is going to be the third fastest once the V10 truck comes out.

Do you think you can really turn a 240SX into something comparable to what is basically a homolgation LeMans car that has some padding on the seat? If you're planning on doing it with anything less than $10,000, you'll probably have to compromise. Like using a quick spool turbo and swapping tires if you want to beat it at Auto-X, and tossing slicks and a larger turbo for the strip. 380 horsepower in a race-bred chassis is quite a bit to defeat.

If I had to use a car to approach the awsomeness that is the Porsche GT3, I have a couple cars in mind. The Skyline, although it won't be anywhere nearly as hardcore or post skidpad numbers or do enduro nearly as well. A Boxster S. What better than the car that's too close to the Carrera for comfort? In fact, the reason it's slow is because it might steal the Carrera's thunder. Or a classic Porsche. A 914/4 with a built Type-IV and proper suspension will work a GT3. A 993TT with a few select mods (still rather pricey) will blow the window glass right out of a GT3 as well.

A Shelby or GT40 kit car might be another way to beat a GT3 with relatively little trouble. You can put AC in. It's even all self-contained like those things on top motorhomes. Used Vipers or Corvettes are another way to do it. You can pick up a Z06 for like $30,000 used. Hand the chassis to Callaway and the engine to Lingenfelter and you're all set. Grip, drag, and all.

Which attributes of the GT3 are you trying to emulate? You're going to have to compromise. The more of one trait you do, you're forced to do lesser of another trait. ie. straight line, skidpad, road race, endurance race, handling, acceleration.

Because those EVOs and WRXs probably aren't "civil" like you prefer your cars. They probably have insane lag. If you're trying to cover everything a GT3 does well, they're not going to last for 24 hours on the same engine or gearbox. The Easy Street WRX might be faster than a GT3 (and a lot of other cars) but it won't shift easily (dogbox) and it won't burp 500hp out on pump gas, nor does it seem to turn corners nearly as fast.

 

areitu said it beatifully haha.

 

PenPen is my favorite char from EVA. He should be Pimpmaster Pen. That's P-squared.

Thank you for your compliment. I appreciate every word.


PS. I sat in the car in your avatar.

 

lucky you lol. And thx haha.

 

Hmm... interesting.

Let me refine my statements. Do I think it can match the Porsche's performance with the right amount of tuning? Yes - mostly. A lot of this will be attention to the chassis - and you just won't be able to match the Porsche's braking.

Could it match the Porsche with the same level of refinement... maybe not. The GT3 from the accounts I've read is not a very comfortable car. I could learn to live with the discomfort though.

For a good review of the Porsche, track down the article comparing it to the F360 Stradale and the Ford GT. I think it's online in Car and Driver or Road an Track, but I lost the link.

I don't know what car I would choose as a starting point for this goal. You may also want to look at the MR-2, RX-7 and Supra. You may run into motor reliability issues taking the MR2 or RX to those power levels, and weight will be working against you getting the Supra to match the responsiveness of the Porsche.

-Justin