S13 KA24DE feels like having vtec after 5200rpm?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13_newbie · 02-04-2008, 09:57 PM

Hi! I have a 91 rps13 w/ stock ka24de.............i dun rev my engine that much, so i dunn when this started........i have noticed that once my rpm reached about 5200rpm, the acceleration rate is faster. for example: <5200rpm, a = 5m/s, >5200rpm, a = 7m/s...........and u can feel the difference, even my friend that doesnt know anything about cars noticed that............any ideas wat went wrong, or any1 had this funny problem b4???? I just has a clutch replaced w/ excedy oe clutch set and a fidenza 11lb flywheel.......and I have a minor leak in the engine - header gasket...............also, i did a complete 5-lug conversion w/ z32 brakes n s14 rims, if that would make any difference........

btw it happens at every gear.........i tried it out on highway

suggestion please......i tried to search, but find nth...........

5t341tH · 02-04-2008, 10:28 PM

cuz u got a vtec motor yo!! K24!!! WOO

nah jk. thats where the KA motor's power band is. duhh

projectRDM · 02-04-2008, 10:30 PM

Quote:

Originally Posted by s13_newbie

Hi! I have a 91 rps13 w/ stock ka24de.............i dun rev my engine that much, so i dunn when this started........i have noticed that once my rpm reached about 5200rpm, the acceleration rate is faster. for example: <5200rpm, a = 5m/s, >5200rpm, a = 7m/s...........and u can feel the difference, even my friend that doesnt know anything about cars noticed that............any ideas wat went wrong, or any1 had this funny problem b4???? I just has a clutch replaced w/ excedy oe clutch set and a fidenza 11lb flywheel.......and I have a minor leak in the engine - header gasket...............also, i did a complete 5-lug conversion w/ z32 brakes n s14 rims, if that would make any difference........

btw it happens at every gear.........i tried it out on highway

suggestion please......i tried to search, but find nth...........

We speak English here. Maybe you should try it too. All I see is a huge explosion of letters.

slow40sx · 02-04-2008, 10:41 PM

an RPS13 is a 180sx with an SR20 in it, yeah its probly ur 5lug lug conversion and the z32 brakes because that has to do with ur powerband

i had the reverse of that problem around 4000 my car felt like it lost all its power, so i put Lucas fuel system cleaner in and its perfect now

mnmax · 02-04-2008, 11:07 PM

might be that leaky engine-header gasket you were talking about. go ahead and check the oxygen fluid level through the kanuter valve.............

slow40sx · 02-04-2008, 11:18 PM

Quote:

Originally Posted by mnmax

might be that leaky engine-header gasket you were talking about. go ahead and check the oxygen fluid level through the kanuter valve.............

jrocslider · 02-04-2008, 11:23 PM

VTEC

Vastly Taking Everyones Car

sum ricer on my local forum has this in his sig and its makes me mad but laugh all at the same time. also sumthing about his vtak kickin in and spanking my truck motor. this is why i love zilvia. i fucken hate ignorant people.

my 200whp civic can beat any turbo car cause its all about all motor yo

suck a dick

okay. thank you. i'm done.

oh yeah. its your 5 lug causing the vtec to kick in. do a 4x100 conv. and you'll be good again.

racepar1 · 02-04-2008, 11:45 PM

It MUST be either the johnson rod or the muffler bearing yo! Maybe someone hid a NAWZ bottle in there somewhere too. LOL! Seriously though punctuation and sentence structure are things that you learn in gradeschool. USE THEM! It is probably your new lightweight flywheel that is making the engine rev better.

jrocslider · 02-04-2008, 11:48 PM

ding ding ding

and there is your answer VTAK

projekt_s13 · 02-05-2008, 12:05 AM

Powerband.........

VTEC YO!!!!!!!!!!!!!

s13 drifta · 02-05-2008, 12:53 AM

Damn I knew I had vtec when I felt a power serge from my ka, thats honda tight fo sho.

Addicted2Kouki · 02-05-2008, 03:38 AM

lemme borrow your car so i can race some honda boys.

VTEC vs VTEC ohhhhh yeahhhhhhhhh

kamikazekid · 02-05-2008, 04:13 AM

LOL! I still dont think he gets it, ahh this is great. I havent laughed this hard since I was a little school girl.....YO!

lilredstiffy · 02-05-2008, 06:37 AM

how old are your spark plugs and wires

LA_phantom_240 · 02-05-2008, 02:41 PM

This thread fails.

KAs fall on their face after 5200rpms, so there's something fishy.

S13_Nightkid · 02-05-2008, 06:42 PM

Quote:

Originally Posted by LA_phantom_240

This thread fails.

KAs fall on their face after 5200rpms, so there's something fishy.

huh? what are YOU driving?? lol

s13 drifta · 02-05-2008, 07:06 PM

Quote:

Originally Posted by LA_phantom_240

This thread fails.

KAs fall on their face after 5200rpms, so there's something fishy.

I dont know what your talking about, but my power band kicks in at around 6k and revs all the way to 9k, V tech FTW!

No, but seriously most of my power is at higher rpms, from 4500 to 7000, the s13 cams really help out in a s14 motor, well along with my other mods.

slow40sx · 02-05-2008, 07:54 PM

Quote:

Originally Posted by s13 drifta

No, but seriously most of my power is at higher rpms, from 4500 to 7000, the s13 cams really help out in a s14 motor, well along with my other mods.

+1 ...

krazydriver · 02-05-2008, 08:25 PM

The lack of power till ~5200 could be cause by either a bad coolant temp sensor or a bad knock sensor.

If it's the temp sensor you would notice a difference in how the engine runs when it's cold compared to when it warm.

If it's the knock sensor, it's retarding timing until ~5000 rpm where the ecu just ignores the signal and then it's running better.

Hope this helps

xelitex · 02-06-2008, 04:22 AM

spoon motor? jk.

murda-c · 02-06-2008, 06:19 AM

It would suck to ka powerband starting at 5200...because it ends at 6 grand.

Silverbullet · 02-06-2008, 01:40 PM

5 m/s and 7 m/s are not acceleration units. They are velocity units.

96Turbo · 02-06-2008, 01:51 PM

haha, good point. i wonder what sophisticated equipment was used to determine these acceleration values. perhaps if we assumed constant acceleration and knew the total displacement of the car over a given time interval we could solve this problem a little easier.

sil40drift · 02-06-2008, 02:07 PM

Your clutch is slipping. At least thats what i gather from reading your OVERLY thought out post...You mean the engine accelerates revs faster? But the car doesnt accelerate as fast? Almost like its revving up in neutral? *shrug*

02-04-2008, 09:57 PM	#1
s13_newbie Leaky Injector Join Date: Sep 2003 Location: BC Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	S13 KA24DE feels like having vtec after 5200rpm?? Hi! I have a 91 rps13 w/ stock ka24de.............i dun rev my engine that much, so i dunn when this started........i have noticed that once my rpm reached about 5200rpm, the acceleration rate is faster. for example: <5200rpm, a = 5m/s, >5200rpm, a = 7m/s...........and u can feel the difference, even my friend that doesnt know anything about cars noticed that............any ideas wat went wrong, or any1 had this funny problem b4???? I just has a clutch replaced w/ excedy oe clutch set and a fidenza 11lb flywheel.......and I have a minor leak in the engine - header gasket...............also, i did a complete 5-lug conversion w/ z32 brakes n s14 rims, if that would make any difference........ btw it happens at every gear.........i tried it out on highway suggestion please......i tried to search, but find nth...........

02-04-2008, 10:28 PM	#2
5t341tH Post Whore! Join Date: Jun 2006 Location: socal (Huntington Beach) Age: 36 Posts: 2,787 Trader Rating: (14) Feedback Score: 14 reviews	cuz u got a vtec motor yo!! K24!!! WOO nah jk. thats where the KA motor's power band is. duhh __________________ lexus baby

02-04-2008, 10:41 PM	#4
slow40sx Nissanaholic! Join Date: Jul 2007 Location: Virginia Beach Posts: 1,979 Trader Rating: (3) Feedback Score: 3 reviews	an RPS13 is a 180sx with an SR20 in it, yeah its probly ur 5lug lug conversion and the z32 brakes because that has to do with ur powerband i had the reverse of that problem around 4000 my car felt like it lost all its power, so i put Lucas fuel system cleaner in and its perfect now __________________

02-04-2008, 11:07 PM	#5
mnmax Zilvia Member Join Date: Nov 2007 Location: in the Marines now... upstate NY Age: 40 Posts: 194 Trader Rating: (0) Feedback Score: 0 reviews	might be that leaky engine-header gasket you were talking about. go ahead and check the oxygen fluid level through the kanuter valve............. __________________ GIGGITY GIGGITY GIGGITY GOOOO!!!!

02-04-2008, 11:23 PM	#7
jrocslider Zilvia FREAK! Join Date: Dec 2005 Location: DownSouth Age: 38 Posts: 1,344 Trader Rating: (4) Rides Gallery: jrocslider Feedback Score: 4 reviews	VTEC Vastly Taking Everyones Car sum ricer on my local forum has this in his sig and its makes me mad but laugh all at the same time. also sumthing about his vtak kickin in and spanking my truck motor. this is why i love zilvia. i fucken hate ignorant people. my 200whp civic can beat any turbo car cause its all about all motor yo suck a dick okay. thank you. i'm done. oh yeah. its your 5 lug causing the vtec to kick in. do a 4x100 conv. and you'll be good again. __________________

02-04-2008, 11:45 PM	#8
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 42 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	It MUST be either the johnson rod or the muffler bearing yo! Maybe someone hid a NAWZ bottle in there somewhere too. LOL! Seriously though punctuation and sentence structure are things that you learn in gradeschool. USE THEM! It is probably your new lightweight flywheel that is making the engine rev better.

02-04-2008, 11:48 PM	#9
jrocslider Zilvia FREAK! Join Date: Dec 2005 Location: DownSouth Age: 38 Posts: 1,344 Trader Rating: (4) Rides Gallery: jrocslider Feedback Score: 4 reviews	ding ding ding and there is your answer VTAK __________________

02-05-2008, 12:05 AM	#10
projekt_s13 Post Whore! Join Date: Jul 2005 Location: Chico/Pittsburg, CA Age: 39 Posts: 2,801 Trader Rating: (5) Rides Gallery: projekt_s13 Feedback Score: 5 reviews	Powerband......... VTEC YO!!!!!!!!!!!!! __________________

02-05-2008, 12:53 AM	#11
s13 drifta Post Whore! Join Date: Aug 2006 Location: Gardnerville,NV Posts: 2,515 Trader Rating: (105) Feedback Score: 105 reviews	Damn I knew I had vtec when I felt a power serge from my ka, thats honda tight fo sho.

02-05-2008, 04:13 AM	#13
kamikazekid Leaky Injector Join Date: Jul 2007 Location: california Age: 36 Posts: 140 Trader Rating: (0) Feedback Score: 0 reviews	LOL! I still dont think he gets it, ahh this is great. I havent laughed this hard since I was a little school girl.....YO! __________________ Drifting is not a crime

02-05-2008, 06:37 AM	#14
lilredstiffy Zilvia Addict Join Date: Nov 2001 Location: louisiana Posts: 618 Trader Rating: (0) Feedback Score: 0 reviews	how old are your spark plugs and wires __________________ KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST

02-05-2008, 08:25 PM	#19
krazydriver Leaky Injector Join Date: Dec 2007 Location: NY Posts: 57 Trader Rating: (0) Feedback Score: 0 reviews	The lack of power till ~5200 could be cause by either a bad coolant temp sensor or a bad knock sensor. If it's the temp sensor you would notice a difference in how the engine runs when it's cold compared to when it warm. If it's the knock sensor, it's retarding timing until ~5000 rpm where the ecu just ignores the signal and then it's running better. Hope this helps

02-06-2008, 04:22 AM	#20
xelitex Leaky Injector Join Date: Jan 2008 Location: cali. Age: 46 Posts: 57 Trader Rating: (0) Feedback Score: 0 reviews	spoon motor? jk. __________________ -who, what, now...? KA<3

02-06-2008, 06:19 AM	#21
murda-c Post Whore! Join Date: Jan 2007 Location: Montgomery County, MD Age: 36 Posts: 3,198 Trader Rating: (1) Feedback Score: 1 reviews	It would suck to ka powerband starting at 5200...because it ends at 6 grand. __________________

02-06-2008, 01:51 PM	#23
96Turbo Zilvia FREAK! Join Date: Nov 2007 Location: AZ Age: 36 Posts: 1,315 Trader Rating: (11) Feedback Score: 11 reviews	haha, good point. i wonder what sophisticated equipment was used to determine these acceleration values. perhaps if we assumed constant acceleration and knew the total displacement of the car over a given time interval we could solve this problem a little easier.

02-06-2008, 02:07 PM	#24
sil40drift Join Date: Aug 2006 Location: Millbrook Alabama Age: 37 Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	Your clutch is slipping. At least thats what i gather from reading your OVERLY thought out post...You mean the engine accelerates revs faster? But the car doesnt accelerate as fast? Almost like its revving up in neutral? shrug