Can the s13 be a wangan BEAST ?

[J_string]

I always wanted a Big highway beast and while redoing the s13 i thought maby there is something to do with the coupe in that way: so right now the car has a sr mostly stock with bolt-on removed all sound deadening all heater control interior ....... striped , frame is welded going for a cage next month or so got a deal on all around lexan window so i Could save another couple of pounds there but not sure if I'll do it yet ) and got an offer for my sr setup that would give me enought money to built a nice 400 around rwhp ka-t. I planed to keep the stock pig nose bumper cutted but with carbon hood and m' sport fender ( stock hood and fender are to rusted tobe repared )
My question is what else is needed to build a highway beast ?
What kind of suspension ?
Anyway to make a under body kit or to buy one for the s13 ?
And do you beleive there is some potential for the car or am I just day deaming ?

Thanks Jf

[West]

Why ditch the SR? It rev's higher stock for stock vs the KA.

Highway beasts suck, keep it on the track.

If you want a highway beast get a Supra.

[gmckey]

Originally Posted by WeST

If you want a highway beast get a Supra.

Message Length++++

[OptionZero]

underbody kit...?

[Demik]

Originally Posted by OptionZero

underbody kit...?

[90RS13]

when you say underbody kit, are you talkin some crazy kind of bodykit that I don't know about or are you talkin about underbody panels to make the underside of the car flat, to help decrease drag? Either way, if you're going wangan style, I'd save till yer face turns blue and then get an RB26DETT. For Wangan it gets no better in my opinion. By the way, I think wangan cars are sick.

[Ricer240sx]

i say go with the RB seriese motor, although there are a couple of SR powered Z's that are used in the wangan

[ISTOTOSAO]

If you want a "wangan beast" move to Japan, so you stay the hell off of our highways.

[D1GP]

if you're gonna make money off the sr, then why not sell it. but if not, might as well keep it and build it up. 400hp is more then enough to smoke almost anything on the streets. a 400hp 240sx, i would consider a beast.
the ka is a very capable motor, if you take the time and spend a lil to get it up to par and tuned right.
if by underbody kit you mean diffusers, those would help w/ aerodynamics. i have not heard of em being sold for the s13.
lightening as much as you can or willing to, never hurts.
suspensions are several. teins and jics are popular. find the right one for your needs.
nothing is a dream, if you have the money.

[kuruptR]

wangan how, the sr's tranny is way to short.

[Wei240]

Originally Posted by kuruptR

wangan how, the sr's tranny is way to short.

exactly...
all these hp talk is nice, but you're going to be stuck at 115mph, and even if you took the limiter out, it's mechanically limited to ~140-150mph unless you have some other transmission and/or some other diff final gear ratio...
there are other cars on the other hand that can keep on moving past that...

[240KAT]

z32TT rear diff should give you some more top end. My KA-T was a highway monster..beat C5 Vette's in 5th w/out downshifting. I know have my HICAS car now and its my Grip car. WAY more fun than going 150.

[andrave]

well you could swap in a 300zx twin turbo diff which would increase your gearing, and use a CA18 det (high redline) with a 240sx tranny (long gearing)...
I don't know what is done to it but the sr20 tuning video has a 180 mph supra. I think it actually hits 320 kph.

[kidinthehall]

Originally Posted by Wei240

exactly...
all these hp talk is nice, but you're going to be stuck at 115mph, and even if you took the limiter out, it's mechanically limited to ~140-150mph unless you have some other transmission and/or some other diff final gear ratio...
there are other cars on the other hand that can keep on moving past that...

exactly where the hell did you come up with these numbers? because you're about 30mph off.

[Wei240]

30 mph off which ones?

115-120 is your speed limiter, don't think this one is off...
if you're telling me you can go 170-180mph you're on crack...

[kidinthehall]

7500rpm in 5th gear is 172-3 mph. documented

like i said.........where did you get your magic numbers from? mine come from an actual car on a dyno, and from actual people running the cars.

[Wei240]

Originally Posted by kidinthehall

7500rpm in 5th gear is 172-3 mph. documented

like i said.........where did you get your magic numbers from? mine come from an actual car on a dyno, and from actual people running the cars.

are we talking about the 240, if so, prove it, pics of people going 170-180 mph assuming the speedo is accurate at that point

here are my 'magic' numbers:
i believe orion posted this:

www.smokemup.com -->
KA 5 speed transmission:
1st 2nd 3rd 4th 5th
Gear Gear Gear Gear Gear
3.321 1.902 1.308 1.000 0.759

Stock Tire Diameter = 24.69 inches
Rear End Ratio = 4.083:1

RPM 1st 2nd 3rd 4th 5th
1000 6 10 14 18 24 = Speed in MPH
1500 9 15 21 27 36
2000 11 19 28 36 48
2500 14 24 35 45 60
3000 17 29 42 54 72
3500 19 34 49 63 83
4000 22 38 56 72 95
4500 25 43 62 81 107
5000 28 48 69 90 119
5500 30 53 76 99 131
6000 33 57 83 108 143
6500 36 62 90 117 155
7000 38 67 97 126 166

yes, 166 mph is the highest theoretically, but practicality speaking unless you have wind assist on a long downhill slope, you won't ever reach that number unless you change the tranny/diff/gear ratios like i mentioned earlier... or wheel sizing... most realistic top speed is around 140-150

[Wei240]

oh yeah, 'dyno' calculation of top speed doesn't count either, real world situations will usually net you lower numbers...

[Mr. Spool]

so with a tt differential I should be able to get a higher top end out of my s14. I am struggling right know to hit 120. My take offs would be for crap at that point though. also what size tire would help with top end.

[240KAT]

Originally Posted by Wei240

are we talking about the 240, if so, prove it, pics of people going 170-180 mph assuming the speedo is accurate at that point

here are my 'magic' numbers:
i believe orion posted this:

www.smokemup.com -->
KA 5 speed transmission:
1st 2nd 3rd 4th 5th
Gear Gear Gear Gear Gear
3.321 1.902 1.308 1.000 0.759

Stock Tire Diameter = 24.69 inches
Rear End Ratio = 4.083:1

RPM 1st 2nd 3rd 4th 5th
1000 6 10 14 18 24 = Speed in MPH
1500 9 15 21 27 36
2000 11 19 28 36 48
2500 14 24 35 45 60
3000 17 29 42 54 72
3500 19 34 49 63 83
4000 22 38 56 72 95
4500 25 43 62 81 107
5000 28 48 69 90 119
5500 30 53 76 99 131
6000 33 57 83 108 143
6500 36 62 90 117 155
7000 38 67 97 126 166

yes, 166 mph is the highest theoretically, but practicality speaking unless you have wind assist on a long downhill slope, you won't ever reach that number unless you change the tranny/diff/gear ratios like i mentioned earlier... or wheel sizing... most realistic top speed is around 140-150

Wrong engine

[skatanic28]

lower the car a nice amount too, pretty sure that will reduce drag somewhat. and you are definately going to have to change the diff ratio, a lot. if you have 400 hp though i really doubt having longer gearing will slow you down that much, probably look for something 3.4-3.6. can you get custom pinion gears made?

[mbmbmb23]

Originally Posted by epidemiksx

It's just an under valence......I dont believe they have full car under valences for our cars....maybe just under the engine as shown below.




http://www.raretrick.com/index.asp?c...roductsID=6773



You can buy the 3.70 ring and pinion gear from Courtesyparts.com to fit into your S13 VLSD....but its like $600.




-m

[SittinOnDubsWGW]

Originally Posted by andrave

I don't know what is done to it but the sr20 tuning video has a 180 mph supra. I think it actually hits 320 kph.

Supra's are good for a little over 200mph on stock 6spd tranny, you need a lot more than stock HP but tranny wise you are good. I want to say its aroundabout 206 top speed.

On high speed runs, you want to try to figure out how to create the least amount of drag, and you would probably want to have your car set up with a little bit of rake to it(front a little lower than the rear) in helping with keeping the front end down. I've heard that 240's tend to have quite a bit of lift on the front when hitting top end speeds.

If you are really going to try to build a very fast car, look up things like coefficient of drag, and things of that nature for your car.

TIRES should be of utmost importance, you do not want to skimp on the only part of your car that touches the road.

Brakes are another very important area, the stock 240brakes are not all that great and with doing high speed runs, getting the car stopped is very important.

If you are serious about trying to build a top speed car, an interesting read would be that of one on Supraforums.com. There is a post which is something along the lines of "for the supra owners who have taken their cars to 200+." Read that post and it will give you some ideas of things you need to consider when building a car for high speed runs(although all info does not pertain directly to our vehicles).

Good luck with your project.

[Wei240]

Originally Posted by 240KAT

Wrong engine

if anything it's wrong tranny, but i'm led to believe sr/ka trannies are the same or very close in the gear ratios (except for the minute variations in final gear ratio in the diff).

engine has nothing to do with top speed limit, except reaching to your top speed limit faster/slower since it already is mechanically determined by the gearing (or not reaching it at all because it lacks the power, but we're assuming that it does)

[90RS13]

werd, all engines turn 2,000 rpm, at, well, 2,000 rpm. The only thing that would make a difference would be if the redline was higher, but he has it calculated up to 7,000 rpm so...

Also I thought it would be interesting to note that a 90' 240sx se, has a drag coeffecient of 0.300. Given that and the frontal area of a 90' 240sx se, which is 1.820 sq. m. Horsepower loss due to wind (if it's completely calm outside) would be approximately 313.4 hp. You will also have a lot of rolling resistance, especially if you get fatty tires, which you should if you're going that fast. I'm just saying, plan on making a ton of power. Have fun though. I really love wangan cars.

[Wei240]

i see,..
didn't know what the redline for sr's are, but in either case, w/ drag/wind resistance/other factors, i don't think 99% of ppl will ever go that high even if they tried...

[kidinthehall]

he said "wrong engine" because you are figuring for a KA. SR redline is 7500rpm. Also, the final drive in the rear end is the same in both SR and KA cars. 4.08. readily available is the 3.90 J30 LSD or a 4.36 (which i have) from the R32 skyline. Hopefully as soon as my ecu gets returned to me, ill take the GPS out and see exactly what the car will do, though i dont really have any doubt that it will hit the limiter in 5th with the 4.36 rear end. 90% of my driving is drag and drifting, hence the 4.36. I should be making considerably more power now, so i may end up swapping it for a 4.08 anyway.

[Ghettokracker71]

Originally Posted by 2NRS130

If you want a "wangan beast" move to Japan, so you stay the hell off of our highways.

Apparently I'm the only one that agrees with you,lol.

[thx247]

You guys are throwing around 150mph like its nothing....

Think of professional racing; of all the support, the budget, the crews, the years of driver experince....

And you want to have a taste of that with no experince, no crew, no budget...

We need some more chlorine in the gene pool.

[240KAT]

WINNAR!