how fast can a SOHC s13 go? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

91CRXsiR · 12-05-2002, 12:05 AM

i noticed that when im driving my car.. @ about 90-95MPH the rev is only about at 4200RPM if the redline is @ 6500 RPM what speed would i be at in 5th gear?

gschroeder78 · 12-05-2002, 04:36 AM

I hit 118MPH before it cut out. I wouldn't really want to go too much faster with stock suspension but I imagine it could get at least 125MPH stock.

*sykikchimp* · 12-05-2002, 02:34 PM

I had an auto 90' and hit around 125 before I slowed down.

AKADriver · 12-05-2002, 02:50 PM

It'd probably be drag limited between 130 and 140.  Redline in 5th is about 145.

logo20 · 12-05-2002, 03:30 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">It'd probably be drag limited between 130 and 140.  Redline in 5th is about 145. </td></tr></table><span id='postcolor'>

a stock shoc 240 can run 145mph?  when I had a 90 integra its top speed was 125mph.  I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.

*Jeff240sx* · 12-05-2002, 03:36 PM

It's a fairly easy over-simplified equation that does not take into account the increasing for of air resistance and tire drag. But you divide the rpm by the speed, then you'll get rpm per mile an hour. Then divide redline by rpm per mile an hour.
If you don't like words:
4200 / 95 = 44.2 rpm/mph
6500 / 44.2rpm/mph = 147mph
Sorry.. I know it's oversimplified.
-Jeff

AKADriver · 12-05-2002, 05:02 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'>
no.

redline in 5th would be 145.  but the car will not ever reach redline in 5th.  It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.

Nismo240SX · 12-06-2002, 11:40 AM

well, i'll sort this out for you... i've had my car registering where 130-135 mph should be. yeah. if i remember correctly, my car was running around 5,600 rpms. btw, i have an auto 90'. just thought i'd help you guys out.

*sykikchimp* · 12-06-2002, 02:49 PM

JWT says a 5-speed 240 w/ just their ECU and no other mods will do 130.

91CRXsiR · 12-08-2002, 01:14 PM

eh.. my cluster stops at 115 MPH does it cut there? or is it like my trueno where the needle can be pointing straight down?

uiuc240 · 12-08-2002, 01:37 PM

<!--QuoteBegin--AKADriver+Dec. 05 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ Dec. 05 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>2)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'>
no.

redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'>
Actually, no.

Redline (6500 rpm) in 5th gear (0.759:1) with the stock rear end (4.083:1) and 205/60-15 tires will get you 154.03 mph. But, as has been said, you'll never get there with the power of the KA. I would imagine 130-135 would be a good estimate...unless you were going downhill with a nice tailwind.

gear/speed calculator...use it

Eric

Ni5mo180SX · 12-08-2002, 05:00 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ Dec. 04 2002,7:02)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'>
no.

redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'>
A little more then a year ago I hit about 142mph@ approx. 6200RPM in 5th.

*Jeff240sx* · 12-08-2002, 07:45 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Ni5mo180SX @ Dec. 08 2002,7:00)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'>
A little more then a year ago I hit about 142mph@ approx. 6200RPM in 5th.</td></tr></table><span id='postcolor'>
Either your car isn't stock and has much more horsepower (I/H/E) or you are mistaken.  Also, how can you specify to the mile per hour on anything over 120?  And then, you will have about 5 miles an hour error that is inherent, and relative to the speed you are going.  At 80 mph, my spedo is off by 3mph (according to my turbo timer, which is hardwired to my ecu.)  It will be an increasingly larger margin of error as your speed rises.
-Jeff

Ni5mo180SX · 12-08-2002, 08:27 PM

My car wasnt stock, thats correct. The speedo may be lying but no way I can go off of that at those speed anyways.

12-05-2002, 04:36 AM	#2
gschroeder78 Zilvia Junkie Join Date: Nov 2001 Location: Westminster, CO Age: 46 Posts: 507 Trader Rating: (0) Feedback Score: 0 reviews	I hit 118MPH before it cut out. I wouldn't really want to go too much faster with stock suspension but I imagine it could get at least 125MPH stock. __________________ 1989 240SX Coupe -Eibach Prokit Springs -KYB AGX Struts -Apex-i N1 Dual Exhaust Westminster, CO

12-05-2002, 02:34 PM	#3
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	I had an auto 90' and hit around 125 before I slowed down. __________________

12-05-2002, 03:30 PM	#5
logo20 Zilvia Junkie Join Date: Apr 2002 Location: Houston, TX Posts: 345 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">It'd probably be drag limited between 130 and 140.  Redline in 5th is about 145. </td></tr></table><span id='postcolor'> a stock shoc 240 can run 145mph?  when I had a 90 integra its top speed was 125mph.  I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out. __________________ http://community.webshots.com/user/logo20

12-05-2002, 03:36 PM	#6
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	It's a fairly easy over-simplified equation that does not take into account the increasing for of air resistance and tire drag. But you divide the rpm by the speed, then you'll get rpm per mile an hour. Then divide redline by rpm per mile an hour. If you don't like words: 4200 / 95 = 44.2 rpm/mph 6500 / 44.2rpm/mph = 147mph Sorry.. I know it's oversimplified. -Jeff __________________ Whatup?

12-06-2002, 11:40 AM	#8
Nismo240SX Zilvia Addict Join Date: Sep 2001 Location: Marion, Virginia. Age: 39 Posts: 855 Trader Rating: (0) Feedback Score: 0 reviews	well, i'll sort this out for you... i've had my car registering where 130-135 mph should be. yeah. if i remember correctly, my car was running around 5,600 rpms. btw, i have an auto 90'. just thought i'd help you guys out. __________________ 1990 Nissan 240sx:s13 blacktop, s13.5 front

12-05-2002, 12:05 AM	#1
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 42 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	i noticed that when im driving my car.. @ about 90-95MPH the rev is only about at 4200RPM if the redline is @ 6500 RPM what speed would i be at in 5th gear?

12-05-2002, 02:50 PM	#4
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1) Feedback Score: 1 reviews	It'd probably be drag limited between 130 and 140.  Redline in 5th is about 145.

12-05-2002, 05:02 PM	#7
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1) Feedback Score: 1 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'> no. redline in 5th would be 145.  but the car will not ever reach redline in 5th.  It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.

12-06-2002, 02:49 PM	#9
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	JWT says a 5-speed 240 w/ just their ECU and no other mods will do 130. __________________

12-08-2002, 01:14 PM	#10
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 42 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	eh.. my cluster stops at 115 MPH does it cut there? or is it like my trueno where the needle can be pointing straight down?

12-08-2002, 01:37 PM	#11
uiuc240 Nissanaholic! Join Date: Apr 2002 Location: Naperville, IL Age: 46 Posts: 2,093 Trader Rating: (0) Feedback Score: 0 reviews	<!--QuoteBegin--AKADriver+Dec. 05 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ Dec. 05 2002,6<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>2)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'> no. redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'> Actually, no. Redline (6500 rpm) in 5th gear (0.759:1) with the stock rear end (4.083:1) and 205/60-15 tires will get you 154.03 mph. But, as has been said, you'll never get there with the power of the KA. I would imagine 130-135 would be a good estimate...unless you were going downhill with a nice tailwind. gear/speed calculator...use it Eric __________________ 2002 Mazda Protege5 1989 S13 w/SR20DET (sold)

12-08-2002, 05:00 PM	#12
Ni5mo180SX Zilvia Junkie Join Date: Dec 2001 Location: Orange County Posts: 423 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (AKADriver @ Dec. 04 2002,7:02)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (logo20 @ Dec. 05 2002,4:30)</td></tr><tr><td id="QUOTE">a stock shoc 240 can run 145mph? when I had a 90 integra its top speed was 125mph. I'd like to know how fast my car can go, I imagine it runs around 140mph but i'd need a new speedometer and ecu to find out.</td></tr></table><span id='postcolor'> no. redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'> A little more then a year ago I hit about 142mph@ approx. 6200RPM in 5th. __________________ Mazda RX-7 FC3S: Jspec motor, ported turbo & wastegate, JIC FLT-A2 coilovers, Mazdatrix adj. rear camber link, TB mod, Koyo 53mm Radiator, Corksport Cat back/midpipe/downipe, 3" Al TID, Apex'i air cleaner, Mazda Comp. mission/motor/differential mounts, Mazdaspeed Strut Bar(R), FD torsen differential, HKS SSQV, HKS elec. boost gauge & elec water temp, Cusco Oil catch, 680cc secondary's, Walbro 255, Banzai Racing FCD, RB DTSS Eliminator bushings, Exedy Clutch & PP, Exedy chrome moly flywheel, RB oil baffle, RB dual alt. pulley, 5 lug conversion, FC3S.org thermal bypass pellet, KVR Cross drilled rotors, complete Energy PU bushings, stainless steel brake lines/clutch line, Aerodyne shroud panel, Azenis RS, and some other stuff. A hybrid of sorts I guess

12-08-2002, 07:45 PM	#13
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Ni5mo180SX @ Dec. 08 2002,7:00)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">redline in 5th would be 145. but the car will not ever reach redline in 5th. It'll stop accelerating somewhere between 130 and 140 thanks to wind resistance.</td></tr></table><span id='postcolor'> A little more then a year ago I hit about 142mph@ approx. 6200RPM in 5th.</td></tr></table><span id='postcolor'> Either your car isn't stock and has much more horsepower (I/H/E) or you are mistaken.  Also, how can you specify to the mile per hour on anything over 120?  And then, you will have about 5 miles an hour error that is inherent, and relative to the speed you are going.  At 80 mph, my spedo is off by 3mph (according to my turbo timer, which is hardwired to my ecu.)  It will be an increasingly larger margin of error as your speed rises. -Jeff __________________ Whatup?

12-08-2002, 08:27 PM	#14
Ni5mo180SX Zilvia Junkie Join Date: Dec 2001 Location: Orange County Posts: 423 Trader Rating: (0) Feedback Score: 0 reviews	My car wasnt stock, thats correct. The speedo may be lying but no way I can go off of that at those speed anyways. __________________ Mazda RX-7 FC3S: Jspec motor, ported turbo & wastegate, JIC FLT-A2 coilovers, Mazdatrix adj. rear camber link, TB mod, Koyo 53mm Radiator, Corksport Cat back/midpipe/downipe, 3" Al TID, Apex'i air cleaner, Mazda Comp. mission/motor/differential mounts, Mazdaspeed Strut Bar(R), FD torsen differential, HKS SSQV, HKS elec. boost gauge & elec water temp, Cusco Oil catch, 680cc secondary's, Walbro 255, Banzai Racing FCD, RB DTSS Eliminator bushings, Exedy Clutch & PP, Exedy chrome moly flywheel, RB oil baffle, RB dual alt. pulley, 5 lug conversion, FC3S.org thermal bypass pellet, KVR Cross drilled rotors, complete Energy PU bushings, stainless steel brake lines/clutch line, Aerodyne shroud panel, Azenis RS, and some other stuff. A hybrid of sorts I guess