Stock S-13 auto enough power to chirp the tires? and stock 0-60 times

[wiwalsh]

I was just trying to get a bearing for how much power my car has related to stock (I dont have any mods, but mine will most likely be below what stock is since I am still doing the basics to it to tune it up)Three questions,Can an auto S-13 chirp the tires with a stock setup?

Since I dont have a track or a good way to measure quarter or eigth times, what should I expect in 0-60 times for an S-13?

Are 0-60 times for autos larger than manuals?

[mattback]

mine does stupid crazy donuts and power slides and all sorts of fun stuff.

and i only have 550 compression in my motor.

[wiwalsh]

But is it an auto? You can do a lot of fun stuff with a manual....

[240canuck]

I believe the auto has something called tip in retard which makes it impossible to spin the wheels from a stand still unless doing a brake stand. i have an auto and it kinda pisses me off. I had a 91 dodge daytona V6 before my 240 and it was auto aswell and that transmission just dropped when you stomped on it. i would just step of the brake at a light slam the gas to the floor and spin the tires all the way through the intersection no problem it had 185 hp and 210 lbs feet of torque. gotta love the power of american cars. but i still think the 240 could do it if that stupid tip in retard bs was removed you can feel it when you stomp on it, it almost bogs out from 700rpm to about 2500rpm then once it passes that it takes off like a rocket maybe a valve body upgrade would help aswell. i think i heard somewhere you could send your ecu to jwt and they could get rid of the retard thing.

[240canuck]

is this only on the auto's??? i was so pissed at my 240 the first week i owned it cause it felt gutless then i learned about the tip in retard BS and i'm much happier now i just got to get some cash together to get that removed.

[wiwalsh]

yeah, while mine is still in need of more tune up stuff, I also feel a heck of a lot better about my 240.... just gotta save up that 600 bucks for the JWT ECU now.....

[mattback]

mien will spin the tires if i floor it sitting thereyes its an auto

i will get this on video if need be

[wiwalsh]

I dont disbelieve you, just would be nice to see a car do what mine is supposed to do

[HaveBlue]

get bald tires. works great. no seriously.

[wiwalsh]

Well, while the bald tires will work (driving hard in the rain works well too)..... :evilhaha Not exactly what i was trying to acomplish.......The real object was how much power is my car lacking....

[240canuck]

well if you rev it too 6000 rpm and drop it into drive it will spin the tires for miles but the transmission will be SHOT in a few months, aswell it does pretty good brake stands but so does a chevette!!!

[topless@vabeach]

If I cut my wheel and floor it my 1993 convertible (yes an auto) will smoke the tires and do doughnuts. But if my wheels are straight my tires fail to break traction. Then again I like the fact my tires dont spin, I take off while others sit and spin.

[mattback]

my car will break tractin if i am just sitting there in drive, with the brake on. and if i let off the brake and floor it, it will turn both tires and then accelerate.

i gotta get a video of this.

[240canuck]

damn maybe there is something wrong with my transmission cause mine comes nowhere close to spinning the wheels. are you sure you don't have an ECU upgrade or some crazy valve body upgrade or something cause mine just boggs

[mattback]

no i have a bone stock 240sx, you can ask my friends dude. the thing is even down on compression 95 compresion on piston 3

[240canuck]

well I know i have a bad 1st to 2nd shift solenoid so maybe thats contributing to my accelaration problem. once I get it fixed then i'll see if its any better.

By the way does 575 bucks sound like a lot to replace all the shift solenoids? and is this possible to do on your own? I've taken my pan off before and changed the filter just wonderign how hard it is to remove the valve bodies? anyone have any experience?

[C-Kwik]

Why do you care about chirping tires? Chirping tires means nothing. You can get just about any car to chirp. But chirping is something I associate with a very hard shift. Hard shifting leads to breaking parts aince it usually occurs from an unloaded drivetrain being loaded up very quickly.

Tip-in retard is inherent in all 240's, manual or auto. It has nothing to do with the transmission. All it is is when you floor the gas pedal, the timing backs off a little and then eases to it's normal timing to prevent the onset of detonation.

There is a resistor for the transmission that can easily be unplugged that results in very harsh shifts. I don;t remember exactly, but I think it decreased line pressure for an instant when shifting. Most likely for comfort and to increase the life of your transmission. Early on many of the auto guys swore by it, but most ended up plugging it back it, having seen no benefits from it and having to deal with the rough shifting.

[wiwalsh]

It was just an attempt to see if my car was producing less power than a typical 240. I have since learned about the tip in retard, I and that my 240 is actually performing very close to stock (in addition I found out that my car will run neck and neck with my friends '98 prelude until the VTEC kicks in, but thats another story)

Thanks for all the info, I really appriciate it!!!

[mattback]

so youre saying that you might actually be able to launch harder at a less than 100% throttle ??

[wiwalsh]

well, its hard to say... for sure i get a 1 second delay on any substantial power at full throttle, but I think that the TIR isnt bad enough to cause it to respond worse than less than 100% throttle... but thats just my opinion of my own car

BTW, this apparently only affects auto cars, so if you have a manual, you are okay....

[240canuck]

I noticed the other day that in my auto s13 when my gas pedal is depressed fully to the floor I hear and feel a "CLICK" almost liek a switch is rigged to the pedal. Could this be the switch for the TIP IN RETARD??? And if it is could the switch be some how disabled??? If its nothing to do with the tip in retard then what is it???

[wiwalsh]

I havent noticed a tick or a click for my tip in retard. This could be your cv joints or some other suspension component, if it is just happening when first hitting the accelerator

According to the FAQ on 240sx.org, the TIR can only be disabled by changing out ECUs to a JWT ECU (or other reprogramed ECU). I do not know what mechanism actually controlls the TIR, and therefor do not know how to account for it.

My best guess is that it is some combination of speed sensor and TPS.

I also do not know what method it uses to delay the timing. If I cna figure this out, I might be able to compensate a little bit for it. I will look through my FSM and try to find the answer.

Does anyone know if the DOHC or the S-14 models had this TIR response?

[240canuck]

I got a 92 dohc and got the tir.

And i noticed the clicking noise from the pedal with the engine off and not rolling in my gargage the other day. try it your self. sit in it and press the pedal when it hits the floor it will click or tick. well yours is the sohc so mayeb its different.

[mattback]

the clicking is more than likely the kickdown switch at the gas pedal.. to kick down shift when trying to haul ***