Top Speed???

[Tino]

haha try slamming on the brakes going these speeds.

[Silent Drifter]

I read somewhere (possibly on these forums) that u could cut a wire from a sensor in the transmission that goes to the speedometer and ecu and it will eliminate the electronic limiter. is this true? and if not does anyone kno of a device that can be bought to eliminate the limiter?

If you go to 240sx.org an look under FAQ's they tell about the speedlimiter removal also the rev limiter but i kind of liek the rev limiter but yea jus go there an read up on it, tells of 2 ways disconnecting wires from the transmission an also cuttin the wire from the ecu.

[nlzmo400r]

89 24osx (stock) 1152oo2 altima 2.5s (stock) 12o, but she pulls like hell even up that high, and is perfectly stable, i cruise at 1o5 or so all the time (tires are rated till 118 dont wanna push it ) and if she wasnt governed, she'd probably get up to about 135 or so if i had to guess

[NIGHTfall_240sx]

brought my S13 (when i had it ) slammed past the SDO so im not sure, i think it is 135 b4 it kicked out. that was one hell of a rush :-D

[AZhitman]

hitman- what car is that with?

A pristine 1995 Q45t... named "Quella".

[96_S14_SE]

Ive hit little H, in kph in my s14 back when it only had intake and exhaust and 2.5" test pipe (had 2 cats )... I estimate its in the range of 136+ mph... It took a bit to get there but it got there.

Best thing about the stock automatic is the lack of a govenor if you need some sustained high speed I guess. That was the fastest Ive taken it and havent done it again since (that was such along time ago.... mabey like 3 yrs). Ive touched 120 a few times over the 3.5 years though even though its only gotten faster, but my brain kicks back in and I slow down... I try to keep it in double digits even if the rare race happens.

[driftaholic]

i got to 115 before, still had some pedal left. i guess i would hit 118 if i kept goin eh?

[Zaxx84]

According to my Apexi Multichecker, I had her up to 241 km/h on the way home from when I bought it. 165,000 miles, intake, header, high-flow cat, exhaust, pulley, and a few other things. If my calculations are correct, that is supposed to be 150.25 mph. How accurate is this thing? I cant wait to see what the SR will top out at.

[Queamore]

I think I did around 140 with my 75 malibu. I don't know cause the needle disappeard and wouldn't come back up like 15 seconds after I let go of the gas.

[wga240]

I've gotten my Prelude up to 130+ several times before. The car had plenty more in it...I believe it tops out around 150-155. I know I've got a few videos from other members of PreludeOnline.com burying the needle past 150.

I haven't even driven my 240 more than 5 feet yet but once I finish the RB swap in a few days we'll see how fast she'll go

[Nismo_Freak]

Somewhere between the M and P in MPH ... I do it every trip to Houston at least once. I'd say I've gotten 140mph tops.

As for other cars that I've driven... ~180mph in a single turbo Supra.

[RobHakari]

i did 125 the second night i had my q, then i found out the tires were rated to 118. stopped any more notions of that idea. i stopped at 125 cause i hadnt driven her enough to get used to her and ive never driven over 90 before so i was kidna scared

ive heard that with the governor off a q's theoretical top speed is(no other mods) is like 175?

[nlzmo400r]

i dunno about 175, that car wont have the power to get up quite that high, i think 155 is about all they'll do, which is not bad at all, 155 is pretty damn qiuck

[RobHakari]

oh well... i just pulled a figure out of my arse that i thought i heard some where. you know, like how people who think they know everything do all the time. which sadly, is kinda what i do often

[MainEvent212]

isnt thoretical top speed of a 240sx like 145 w/ no governer?

that's no matter for me anyways because when i get my KA-T finshed i should be running about 12 psi on a F-max stage 1...that should be good for like 280 hp right?

[Rockenreno]

on the open desert roads on the way back from san diego I got my s14 up to 95 (I just got it, didn't want to speed too much), but when my friend was driving he did 105 before I stopped him. I just got the car, don't want to push it too hard yet and end up with a cube :P

The car handled brilliantly at those speeds though... and loaded down with nearly eveything I own in the trunk and back seats. Felt like we were only going 60 or so

[Nathan]

Regarding tire speed ratings: they have to run at that speed for 12 hours to attain the rating, I think even an R rated tire (106) would be good for a quick blast to check your tops speed when new. Just dont do it all the time. I'm planning on getting BFG Comp T/A drag radials so that they fit the stock rims and I retain the complete stock look I'm hoping they'll be ok for at least one quick top speed check but they are only rated for 106. The Nitto drag radials are rated for 149 but they dont make a suitable size AT ALL. Really pisses me off as they are really the better tire for street use. Does anyone else know any good street legal drag radials? sorry to hijack the thread a bit...I've gone 121 in my friends 93 Altima!

[MainEvent212]

115 in a mini cooper S...have i posted yet? i did this on the way to six flags 2 days ago anyhow

[Bbill528]

118 for me...

[AZhitman]

i dunno about 175, that car wont have the power to get up quite that high, i think 155 is about all they'll do, which is not bad at all, 155 is pretty damn qiuck

nlzmo - That is inaccurate. Not only does the Q have PLENTY of pedal left at 155, they're top-speed governed at 160. The JWT chip fixes that little problem.

A perfectly-maintained Q with JWt chip and the correct tires (Michelin Pilots) should be good for 170+.

[elbles]

Well, if we're talking about top speeds in any car, I've gone 130 MPH in a 1995 Oldsmobile Aurora, and there was seemingly plenty of room left. Before you start knocking that car, it has a 4.0 liter 32-valve V8 which brings it to 250 HP. It's no speed demon in that car (mad heavy), but Shelby used it in his Series 1. In my 240, I've hit 100+ a couple of times, most notably following my dad on the Saw Mill Parkway . . . I think I was having more fun however, considering he was driving a 01 Chevy Impala. :-)

[AZhitman]

Regarding tire speed ratings: they have to run at that speed for 12 hours to attain the rating, I think even an R rated tire (106) would be good for a quick blast to check your tops speed when new. Just dont do it all the time. I'm planning on getting BFG Comp T/A drag radials so that they fit the stock rims and I retain the complete stock look I'm hoping they'll be ok for at least one quick top speed check but they are only rated for 106. The Nitto drag radials are rated for 149 but they dont make a suitable size AT ALL. Really pisses me off as they are really the better tire for street use. Does anyone else know any good street legal drag radials?

Nate - No flame, but that's incorrect. Speed ratings are actually VERY misleading, and have really NOTHING to do with the "speed" the tire can withstand. For starters, the testing is conducted in a climate-controlled lab (60 degrees), with a nice, smooth roller (no rocks, pebbles, potholes, oil, chemicals, nails, rabbits, etc), on a BRAND NEW tire (no ozone damage) and is far shorter than 12 hours. Consider that NO car can go 12 hours at high speed w/o refueling (and thereby "cooling" the tires).

Take that same tire (that passes as an H-rated tire) out onto the freeway in the summer, where the pavement reaches 150 degrees. Add some small rocks and road debris, some ozone damage from six months of sunshine, a few pounds less pressure than recommended, a few stressed steel belts from that small pothole you hit a few weeks ago AND the corrosion that has already startd from the humidity in the air in the tire. Add to that a poor balancing job (most are) and take that tire up to 100+ mph. The temperature inside the tire can go high enough to actually MELT the rubber. You're now looking at a massive tire failure as the internals self-destruct silently.

I'm not trying to make people paranoid, but the argument you'll hear is, "Dude, I've done that HUNDREDS of times and nothing bad happened." My response? As a certified accident investigator, you'd be surprised what can be discerned from x-raying a blown tire.

Also, why would you buy drag radials? Again, not flaming, but aren't these for a street car? Really, even if you're putting 300 hp to the ground, street tires are a much smarter choice (and you won't have to compromise wear, wet traction and price).

Sorry to ramble - I'll shut up now.

[gunclap]

i did 120 in an mr2 with a friend. i was going 101 south near Santa Barbara, CA. then we fell off a cliff. hehe jk. i let off on the gas before we hit a slight turn. that will most likely be the fastest i will ever go in a car. pretty scary.

[RobHakari]

its freaky when you get going above 110 when youve never done it before. its like going warp speed

[huckedup16]

Ive hit 125 in my 95 Subaru Legacy AWD before it bounced me back to 115. It was in I-91 the year before last before it became cop ridden. Smooth as a baby's butt.

The 93 FWD Legacy I had before it was ungoverned and had taller gears...I never tested it though.

Both were 5 spd and came stock with 140 mph speedos. That fact scared my mom a little when her 17 year old sine had a first car with a speedo that high.

On a side note: My friend who was following me in his 91 Honda Accord Coupe on the above mentioned trip on 91 had to stop at a gas station and refill his transmission fluid after we cruised at about 115 for a good 30 minutes. Dont worry, we both had z rateds equipped. (His were mad tyte 18 inch dubs yo haha).

[K1LLA916K]

i dropped 105 in my 88 sentra. thats the max it reads. pushed the needle all the way down on the way to reno. the funy thing is my car was petty stable. didnt shake at all. if only it could go faster....

[nlzmo400r]

nlzmo - That is inaccurate. Not only does the Q have PLENTY of pedal left at 155, they're top-speed governed at 160. The JWT chip fixes that little problem.

A perfectly-maintained Q with JWt chip and the correct tires (Michelin Pilots) should be good for 170+.

wow, that surprises me a bit, 17o+ in a Q? wow, i didnt even think the new 34ohp Qs could run that high, i figured transmission if anything would stop you at about 16o, and also, as far as the govenor, what year are u talking about that the govenor is 16o, ive heard a story on here (infiniti speeding stories i think it was) where someone in their Q (93 I THINK) was doing 'warp 7+' (he's the big star treck fan with the license plate of 'warp 7' or something) and i thought i recalled him saying his govenor kicked him back once he hit 154 i believe, not questioning you, just curious, also, i really want an o3 Q, i saw one for sale in DOUPONT REGISTRY a while back (it was modded by a shop somewhere) and they wanted somethinh like 8oK for it, but it was brand new (o2) and it was up to i think 45o+hp and ridin on 18s , really nice

[Tweaky_Tom]

A stock 240 (S14) with the rev limiter removed WILL do 140, but the condition of the engine must be TOP NOTCH! No detonation or overheating. It does take a while to get there but man that's fun! But yeah slowing down is a bizatch......feels like a 747 touching down....sssssserrrr......scurch....scurch.scurch....! <<<Tom>>>

[Nathan]

Well AZ...I could have sworn I read that here on NICO but upon searching for 10 minutes...cant find where I read the thing about speed ratings so I guess you are right As for the reason for the drag radials...250-300hp on 6.5 inch wide rims? I dont see how anything but drag radials could even come close to hanging onto that...I've had a VERY easy time spinning tires in Camaro Z28's and SS's and they have 285 wides or something similar out back...225 just wont cut it IMO unless it's a drag radial. The whole goal is to keep the stock rims because I'm too cheap to upgrade them and want to maintain the stock appearance of the car. Rain isnt a real issue either as I dont really drive all that much during the school year and if I HAVE too, I can walk just about anywhere I need too So since 99% of my driving is on dry pavement, I'll have respectable amounts of power, and I want to keep stock rims...I was thinking strongly about drag radials. You are more than welcome to offer another viable solution if you know of one though!

[AZhitman]

nlzmo - The "Star Trek" dude rolls a 99, they're a bit slower. 90-95 are capable of 160 or higher w/chip upgrade... Not that I'd ever push it that hard. At that speed, the slightest goof means you're going home in Ziploc baggies.