KA24E Rev Limit

Information on the naturally-aspirated KA24E and KA24DE engines.
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discoballer
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Any one know what the stock rev limit is in a KAE? it seems like mine is hitting around 5200. Seems kinda low, i mean i know its a SOHC and all, i just wanted to make sure this sounded right to you guys.

Thanks!


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Ajax
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Not a SOHC guy, but it should be more than 5200. Probably somewhere close to 6800 I'd guess. What does the car do when you hit 5200?

seang
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Tachomemter not working?

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discoballer
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Ajax wrote:Not a SOHC guy, but it should be more than 5200. Probably somewhere close to 6800 I'd guess. What does the car do when you hit 5200?
Thats what im sayin. It feels like you hit the rev limiter. i even tried to ease it up to it on the highway. dropped it to 4th and slowly brought it up to 5200 and it stopped building revs.

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Ajax
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Um. Might not be the best idea to test your rev limit in 4th gear on the highway- I'm pretty sure that would be over the spped limit. Does it do the same thing in every gear? How about out of gear?

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discoballer
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to be honest i never tried it in neutral. but the fact of the matter remains the car wont rev over 5200 or so RPM.

seang
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I have a weird little theory that might just be wrong. It makes sense, but it is a shot in the dark.

How familiar are you with what 5200rpms sounds like on different engines? Could you ballpark it even without a tach? Ok, here is what I'm getting at. It is like the engine is really spinning to the rev-limiter, but the tachometer is only reading 3 of the cylinders, so 25% of the signal is gone. If this were true, then it would read 5200 when really it was spinning 6500. I don't know....?

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Ajax
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Another thought- you're doing this in 4th gear, right? What speed is that? If its 114 or so, its the speed limiter and you're going too fast on public roads.Again- Does it do this in all gears? in neutral?

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discoballer
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Ajax wrote:Another thought- you're doing this in 4th gear, right? What speed is that? If its 114 or so, its the speed limiter and you're going too fast on public roads.Again- Does it do this in all gears? in neutral?
theres no chance 4th gear at 5200rpm is 114 mph. sure it was over the limit but thats besides the point. it does it in 1st and 2nd as well. havent tried it in neutral.

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discoballer
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seang wrote:I have a weird little theory that might just be wrong. It makes sense, but it is a shot in the dark.

How familiar are you with what 5200rpms sounds like on different engines? Could you ballpark it even without a tach? Ok, here is what I'm getting at. It is like the engine is really spinning to the rev-limiter, but the tachometer is only reading 3 of the cylinders, so 25% of the signal is gone. If this were true, then it would read 5200 when really it was spinning 6500. I don't know....?
well it seems like im short shifting. like theres more revs left but the limiter is stopping me from doing so. so i dont think its actually at 6500 but only reading 5200.

gumby74
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Revving a KA to redline is both pointless and dumb, E or DE alike. I can only imagine the mileage on your engine is into the 100k range so if you continue driving the car like a Honda you are looking at a rebuild.

As to you problem, get under the car on the passenger side. Along the transmission there should be 3 connectors, from the tail end of the transmission a)speed sensor b)can't remember and c) reverse light switch. Disconnect the second one and go for a spin. If that does nothing then try disconnecting the third connector and go for a spin. Sorry, I have not had to mess with the sensors down there i n years, my memory fails me. If that still does nothing have your MAF sensor cleaned and checked out.

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discoballer
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gumby74 wrote:Revving a KA to redline is both pointless and dumb, E or DE alike. I can only imagine the mileage on your engine is into the 100k range so if you continue driving the car like a Honda you are looking at a rebuild.

As to you problem, get under the car on the passenger side. Along the transmission there should be 3 connectors, from the tail end of the transmission a)speed sensor b)can't remember and c) reverse light switch. Disconnect the second one and go for a spin. If that does nothing then try disconnecting the third connector and go for a spin. Sorry, I have not had to mess with the sensors down there i n years, my memory fails me. If that still does nothing have your MAF sensor cleaned and checked out.
1) i dont drive it like a honda lol. i simply just bought the car and noticed the car stopped building revs at 5200.

2) thanks, ill check those out.

gumby74
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Your post says otherwise. I could care less though, your car.The sensor on the transmission acts as a rev limiter when it craps out. For the life of me I can not remember what it's called though. Disconnecting it kills the signal to the ecu, removing the rev cut. Good luck.

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discoballer
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gumby74 wrote:Your post says otherwise. I could care less though, your car.The sensor on the transmission acts as a rev limiter when it craps out. For the life of me I can not remember what it's called though. Disconnecting it kills the signal to the ecu, removing the rev cut. Good luck.
Much appreciated, thanks for the help.

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jonas92
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does the motor just stop building revs like it just wont go over 5200 or is it acutlly hittin revv limit..like bang bang bang bang ??

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discoballer
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jonas92 wrote:does the motor just stop building revs like it just wont go over 5200 or is it acutlly hittin revv limit..like bang bang bang bang ??
yea, sorry i guess i worded it wrong. it hits the limiter at about 5200.


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