Streetable Horspower

Dream about your 240's turbo power in this forum.
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JohnR
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Streetable Horspower

Post by JohnR »

I was reading the dyno section and talking about 1000hp KA, when another member chimed in what is the point it is unusable power on the street. So how much power is considered truly usable horspower in a 240sx for street use. Ego's and bragging rights aside how much power with proper suspension and tires will a 240sx harness? My guess is around 350hp will still allow the right foot to hit the floorboard with some authority.
TryingToTurbo
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Post by TryingToTurbo »

Been discussed a thousand times. With a set of streetable tires that last more than 1,000miles, a solid 300whp is plenty and still maintain driveability and comfort.
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boker240
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Post by boker240 »

ur obviously talking about traction. dr's and some beefed up suspension in the rear 450whp and under is streetable. imo over 500whp is where a chevy rearend would come in handy.
arias 8.8.1,615 tomie inj.,clevite bearings,arp 10mm hs,z32 maf,jwt ecu,intake butterflies removed,all emissions removed,cx rad. dif dual fan controller,altima dual fans,fidanza fw,stage 3 clutch,solid d shaft,j30 rearend,energy suspension bushings,kyb struts,155 lbs weight reduction.
currently n/a.
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He'll probably blow the motor, and then join the army of retards who hate on KA's for no good reason.
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Jordan Gladman
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Post by Jordan Gladman »

It isnt the power level, its the driver. 300whp starts to feel weak as heck after a couple weeks of motoring around every day. You put it in 3rd or 4th and wish you had another 200whp... I would love to daily drive a car that makes 1000whp.

Ripping around in a 600whp KA isnt much different from someone ripping around on a 1+ liter bike.
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tom550
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Post by tom550 »

everyone has there opinion.
if i had like 50 more hp i would be very happy for just going to work and what not.
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jeeta_s
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Post by jeeta_s »

I think 300Whp and under is great if you have a small turbo that spools up real fast.
itwillboost
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Post by itwillboost »

It depend on the driver and road conditions. Anyone else ever see the guy from london with the 2000hp street legal car ? It was on a couple different news shows like 2 years ago.
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R34SR
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Post by R34SR »

stock ftw
MEGASQUIRT 2 PNP
AEM IGN1A COILS
EAGLE-ARP-SUPERTECH 9:1 KA24DE
BW S257 SX-E .78AR
ID1050x Injectors
Full Race twin scroll manifold
ISIS FMIC
Mazworx z32 tranny swap
CTS V CALIPERS
STANCE LX+ Coilovers
J30 LSD
AME FS01 WHEELS 18X9 +25



TinyT wrote:for the love of god, post your setup, do you really think you can get an answer after saying HI ME CAR HAS TURBO NOW BUT I CANT BWAAA PSHH WITH IT WHATS WRONG
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Post by Theo23 »

I think someone touched on it above, but it's not about the number.. It is about how well it is built. A lot of 240's have hick-ups, are not built right, and are tough to drive even at 250 whp. If you can size the components properly, tune it very well, build the suspension appropriately, and maybe have the boost hit smoothly, you could drive 400hp very decently on the street.
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Walperstyle
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Post by Walperstyle »

It all depends on what type of driving you do.

1000hp is pretty much only good for Drag racing, burnout competitions, or dyno numbers

The S chassis is not good for bringing power down to the ground stock. You need wider tires, and a beefed up drivetrain if you ever expect to use that 1000hp.

300-500 is streetable, after that, it depends where you are and what you are doing. Only you know how your clutch reacts, and how to engage at the right RPM.
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peter32582
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Post by peter32582 »

I drive a 332whp and 355wtq S14 daily during the summers and it 's fun. Like most I want more power.
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508whp and 421wtq at 23psi on E85

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jeeta_s
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Post by jeeta_s »

^^ did you build your motor or just running stock internals?
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Post by JohnR »

KA24DE Arias 8.8:1 pistons, ams sportsman rods, arp head studs, megasquirt, 3" front to back exhaust. All other components new but stock. going to purchase gt3071r turbo, will buy injectors when turbo is installed. Engine currently in my 510 with 3.9:1 viscous lsd r200 wolf creek racing cv shafts. Sorry no S chassis for this KA but I love having the 383 of four cylinders, stump pulling torque for the street! All my freinds run small block chevy's
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Post by peter32582 »

I have a built KA with 9.5.1 Airas pistons, Eagle H-beam rods, stock bore, etc.

That setup was with a Garret GT3071r-WG turbo and I made 332whp and 355wtq at 15psi dropping to 10-11psi, due to bad internal wastegate.. The GT30 blow up a month after it's 1 year warranty. So no more BB turbos for me PERIOD. My new setup with consist of a Precision 5857 .82 A/R and a 46mm PTE wastegate.
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508whp and 421wtq at 23psi on E85

Elite Auto Engineering
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763.634.8005
www.eliteautoengineering.com/
JohnR
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Post by JohnR »

How does the precision turbo compare to the garrett?
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Post by peter32582 »

Don't know just quite yet. Will have everything in and running come mid to late April. I'll post dyno sheets once tuned also. the new setup will be mated to a equal length manifold, all V-band, which will be Made by Elite Auto Engineering.


Few pictures of the 5857SP turbo and the Precision 46mm WG

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Here's my old setup dyno sheet

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508whp and 421wtq at 23psi on E85

Elite Auto Engineering
1607 99TH LANE NE, BLAINE, MN 55449
763.634.8005
www.eliteautoengineering.com/
187MotorSports
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Post by 187MotorSports »

^Nice keep us up dateted, On my old setup i made 335.2whp and it was a very very fun street car. To me i would say it was very streetable.
JohnR
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That is cool

Post by JohnR »

I will look forward to seeing your dyno with the new turbo and be able to compare the two graphs. I am not sold on the gt3071r but am looking for a turbo that will give as broad of a powerband as possible while making somewhere near 350-400hp
gold zenki
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Re: That is cool

Post by gold zenki »

JohnR wrote:I will look forward to seeing your dyno with the new turbo and be able to compare the two graphs. I am not sold on the gt3071r but am looking for a turbo that will give as broad of a powerband as possible while making somewhere near 350-400hp
what ate u planning on running if not the 3071? I was recommend a 3076 .63rear my power goals are around the same as yours..
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JohnR
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Post by JohnR »

I have found that th gt3071 from garrett will fit my build quite well however I may decide on a different company. Some people seem to dislike garrett ball bearing turbo's, I have nothing against them, however this is my first turbo project and at the price of turbo's I am trying to get as much feedback from people as possible before I make my decision. One of the biggest things seems to be being honest about power goals, there is no sense running a gt35 for my power goal and I do not have some lofty 500hp goal for my first build either I think 350hp is a good starting place. The other turbo that could feasibly work would be a 2871 however I think I want the room to grow that the 3071 offers.
gold zenki
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Post by gold zenki »

@johnR ... this is also my first turbo build, I have a fully built ka log style t3/4 Mani looking for hiiighhh 300 if not 400. If u don't buy a garret who are u looking at,
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Post by smbonn2005 »

Streetable horsepower is all on the preference on the driver, I used to daily a 80 Trans Am with 600rwhp before I got into the import scene. Now I'm building a 700whp+ KA that will be driven on the street when it is nice enough :D Granted there will be a lot of suspension and drivetrain mods to get the power to the ground but you pay to play so...
JohnR
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Post by JohnR »

I really have no brand prefrence for turbo as I have no experience with them, however I know that other companies must build turbo's comparable to a gt3071r and I am not so blind as to only look at a garrett, bang for the buck enters into the equation,

As for streetable horsepower, I agree personal prefernce is a large part of it however I have a friend with a 600rwhp 87 Trans am and that car is only streetable in warm, dry weather also you cannot just plant your right foot, it will roast the rear tires for as long as you have fuel and the car has very modified suspension and MT ET Streets. So my preference will include not being f@#$ed if it rains also not having to be too careful with my right foot, something you don't have to be scared to let the wife drive, having said that she will probably never drive it!
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