Red line for a KA? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Rickrak77 · 11-30-2005, 12:06 AM

The KA Midget is back.

The pickup I got my KA out of didn't have a tach in it, so I'd really like to know what the red line for a stock KA is since I finally got a tach for it.

How do you post pics here? I've got some pics of my car I'd like to post.

reefer1114 · 11-30-2005, 12:32 AM

Search Son!

orion::S14 · 11-30-2005, 07:47 AM

S13 or S14 KA?

Useful redline depends on which motors (different cams)...but use ~6500 as a safe redline for now...although ~7000rpm is no big deal. That's not to say you'll be making power up there, but it won't fly apart due to exessive piston speeds.

- Brian

SirWarrior · 11-30-2005, 08:31 AM

Quote:

Originally Posted by orion::S14

S13 or S14 KA?

Nissan Hardbody Pickup as stated

Quote:

Originally Posted by Rickrak77

The pickup I got my KA out of

orion::S14 · 11-30-2005, 08:58 AM

OK, I'll assume a late model Frontier? Maybe a D21? SOHC or DOHC?

Nonetheless, truck cam(s?) will be geared for low end, so use ~6000rpm as a good redline.

The bottom end of all the KA's are quite similar, and that's what really limits RPM...but for your purposes, 6k is safe, and you'll most likely not make power above that...so why push further?

- Brian

s14unimog · 11-30-2005, 09:22 AM

there is absolutly no reason to take that motor over 5600, If you look at a dyno sheet you will see that power peaks and drops off after that. There is no need to rev the piss out of a KA, it just makes more noise.

Evil98silvia · 11-30-2005, 09:30 AM

Youll hit the limiter right around 7200. If your sliding your car around you will definatly need to rev past 5600.

***S14DB*** · 11-30-2005, 10:35 AM

I hit the limiter at 6400 on the dyno.

s14unimog · 11-30-2005, 10:45 AM

mine hits 6400 limiter also

Evil98silvia · 11-30-2005, 11:28 AM

Oops sorry I have a JWT ecu. I forgot I had them move the limiter, its been a few years.

ledzeppelin240 · 11-30-2005, 04:28 PM

When accelerating in 1st gear it is useful to take it up to redline so when you shift you are still in the power band...

Rickrak77 · 11-30-2005, 08:12 PM

Cool, my wife rolled the pickup (90 model, sohc in case anyone's interested) so I stuffed the whole drivetrain into a MG Midget (I started out with just the engine and tranny but the midget rearend only lasted about a week before giving up all of it's gear teeth).

I'm not sure if the 240 and the pickup used the same trans. or even rear end gears, but knowing a general redline helps.

The cam in this is definitely made for lower RPMs, it makes power to about 5600 or so, then kinda falls off, but in a 1600 pound car it doesn't matter all that much.

socal240sx · 12-01-2005, 01:13 PM

No need to rev a KA above 5600 rpm as this the KA makes most of its power and torque lower in the RPM range (which what I like about the KA) and is a VERY durable engine at low revs because it is a light truck engine. The downside is that revving to high too much may throw a connecting rod as that seems to be the KA achilles heel from what I hear from downs that have done multiple rebuilds on their KA's

Evil98silvia · 12-01-2005, 01:16 PM

True if your just accelerating, but there are times where youll need to rev past. I havnt thrown a rod yet...

But when I do I hope it punches a BIG hole.

ryan hagen · 12-01-2005, 05:54 PM

i think s13's have a higer rev limiter than s14's, but my 91 with a jwt is at 7200, when i bounce the rev limiter i think it would proablly go higher. but i have intake header ecu, used to have cams, etc.

Ghettokracker71 · 12-01-2005, 09:16 PM

gotta post pics and more detailed specs on the mG! I remeber back when you first starting posting about it. Thats so hot man.LIGHT fucking car with a torquey ass 4 banger...

11-30-2005, 12:06 AM	#1
Rickrak77 Join Date: Jun 2004 Location: Central CA Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	Red line for a KA? The KA Midget is back. The pickup I got my KA out of didn't have a tach in it, so I'd really like to know what the red line for a stock KA is since I finally got a tach for it. How do you post pics here? I've got some pics of my car I'd like to post. __________________ Some days you're the windshield..... Some days you're the bug.....

11-30-2005, 07:47 AM	#3
orion::S14 Nissanaholic! Join Date: May 2003 Location: Orange Park, FL Posts: 1,666 Trader Rating: (0) Feedback Score: 0 reviews	S13 or S14 KA? Useful redline depends on which motors (different cams)...but use ~6500 as a safe redline for now...although ~7000rpm is no big deal. That's not to say you'll be making power up there, but it won't fly apart due to exessive piston speeds. - Brian __________________ www.KA24DEvelopment.com

11-30-2005, 08:58 AM	#5
orion::S14 Nissanaholic! Join Date: May 2003 Location: Orange Park, FL Posts: 1,666 Trader Rating: (0) Feedback Score: 0 reviews	OK, I'll assume a late model Frontier? Maybe a D21? SOHC or DOHC? Nonetheless, truck cam(s?) will be geared for low end, so use ~6000rpm as a good redline. The bottom end of all the KA's are quite similar, and that's what really limits RPM...but for your purposes, 6k is safe, and you'll most likely not make power above that...so why push further? - Brian __________________ www.KA24DEvelopment.com

11-30-2005, 09:22 AM	#6
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	there is absolutly no reason to take that motor over 5600, If you look at a dyno sheet you will see that power peaks and drops off after that. There is no need to rev the piss out of a KA, it just makes more noise. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

11-30-2005, 09:30 AM	#7
Evil98silvia Join Date: Dec 2003 Location: washington DC Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	Youll hit the limiter right around 7200. If your sliding your car around you will definatly need to rev past 5600. __________________ Robbie C. KA-T

11-30-2005, 12:32 AM	#2
reefer1114 Zilvia Addict Join Date: Dec 2004 Location: in your womans pants Posts: 638 Trader Rating: (0) Feedback Score: 0 reviews	Search Son!

11-30-2005, 10:35 AM	#8
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	I hit the limiter at 6400 on the dyno. __________________ Comments should be taken as Opinions not as Statements of Fact

11-30-2005, 10:45 AM	#9
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	mine hits 6400 limiter also __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

11-30-2005, 11:28 AM	#10
Evil98silvia Join Date: Dec 2003 Location: washington DC Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	Oops sorry I have a JWT ecu. I forgot I had them move the limiter, its been a few years. __________________ Robbie C. KA-T

11-30-2005, 04:28 PM	#11
ledzeppelin240 Zilvia Addict Join Date: Sep 2003 Location: Sinse Posts: 688 Trader Rating: (0) Feedback Score: 0 reviews	When accelerating in 1st gear it is useful to take it up to redline so when you shift you are still in the power band... __________________ Anyway, no drug, not even alcohol, causes the fundamental ills of society. If we're looking for the source of our troubles, we shouldn't test people for drugs, we should test them for stupidity, ignorance, greed and love of power. Looking for: JDM S13 OEM Sideskirts

11-30-2005, 08:12 PM	#12
Rickrak77 Join Date: Jun 2004 Location: Central CA Posts: 32 Trader Rating: (0) Feedback Score: 0 reviews	Cool, my wife rolled the pickup (90 model, sohc in case anyone's interested) so I stuffed the whole drivetrain into a MG Midget (I started out with just the engine and tranny but the midget rearend only lasted about a week before giving up all of it's gear teeth). I'm not sure if the 240 and the pickup used the same trans. or even rear end gears, but knowing a general redline helps. The cam in this is definitely made for lower RPMs, it makes power to about 5600 or so, then kinda falls off, but in a 1600 pound car it doesn't matter all that much. __________________ Some days you're the windshield..... Some days you're the bug.....

12-01-2005, 01:13 PM	#13
socal240sx Join Date: Dec 2005 Location: Lake Forest, CA Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	No need to rev a KA above 5600 rpm as this the KA makes most of its power and torque lower in the RPM range (which what I like about the KA) and is a VERY durable engine at low revs because it is a light truck engine. The downside is that revving to high too much may throw a connecting rod as that seems to be the KA achilles heel from what I hear from downs that have done multiple rebuilds on their KA's __________________ Mike F Lake Forest CA 1990 240SX SE fastback (RPS13) KA24E

12-01-2005, 01:16 PM	#14
Evil98silvia Join Date: Dec 2003 Location: washington DC Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	True if your just accelerating, but there are times where youll need to rev past. I havnt thrown a rod yet... But when I do I hope it punches a BIG hole. __________________ Robbie C. KA-T

12-01-2005, 05:54 PM	#15
ryan hagen Zilvia FREAK! Join Date: Jan 2003 Location: rhinelander wisconsin Age: 42 Posts: 1,465 Trader Rating: (8) Feedback Score: 8 reviews	i think s13's have a higer rev limiter than s14's, but my 91 with a jwt is at 7200, when i bounce the rev limiter i think it would proablly go higher. but i have intake header ecu, used to have cams, etc. __________________ 1990 hatch ka24de gt2871r

12-01-2005, 09:16 PM	#16
Ghettokracker71 Post Whore! Join Date: Nov 2003 Location: Don't look now... Age: 38 Posts: 3,327 Trader Rating: (0) Feedback Score: 0 reviews	gotta post pics and more detailed specs on the mG! I remeber back when you first starting posting about it. Thats so hot man.LIGHT fucking car with a torquey ass 4 banger...