hi guys, i need to knwo what the redline is on this motor and where does the peak power come in? anyone know, its not usdm itr motor but jdm itr motor.
anyone?
thanks

 

Redline is 8400rpm and fuel cutoff is 8600rpm. It's 200hp at 8000rpm or 8100rpm, I'm not sure about that part but I'm sure about the redline and fuel cutoff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by negtegra &raquo;</TD></TR><TR><TD CLASS="quote">as stated 8400rpm is redline but i thought it peaked hp at 7800rpm?


Modified by negtegra at 12:50 AM 8/30/2005</TD></TR></TABLE>

No, the USDM motor peaks at 8000rpm, and the JDM ITR motors flows better, but I looked into it and peak power is still at the same rpm level. And like I said, the stock JDM ITR ECU's fuel cutoff is at 8600rpm, it will NOT rev higher.

 

I said 8500 cause you bang-rev limiter......

 

I have a JDM ITR motor and the person in japan that i got it from apparently raised the rev limit. Ive take mine to 9k several times and i can onestly say after 8200-8300 is dose not make any more power so revving to 9k is possible but not reccomended

 

jOO readin the stock tach for that? It's off by a bunch up there ya know.

Mine has seen indicated 9k more than several times. It still makes plenty of power there, it just peaks around 8k and levels off before falling.

 

According to the "Best Motoring International Vol. 1 - Type R Legend" special I watched, the jdm b18c5 will redline at 8,400....but personally I seem to be able to hit 8,900 before it cuts out. (not that I make a habit of doing that...)

Mine still seems to pull really good at over 8,500...but that may be something to do with my aftermarket valvetrain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Andy_R &raquo;</TD></TR><TR><TD CLASS="quote">According to the "Best Motoring International Vol. 1 - Type R Legend" special I watched, the jdm b18c5 will redline at 8,400....but personally I seem to be able to hit 8,900 before it cuts out. (not that I make a habit of doing that...)

Mine still seems to pull really good at over 8,500...but that may be something to do with my aftermarket valvetrain.</TD></TR></TABLE>
Your tach isn't able to keep up with the actual revs. That is why you think you rev that high... The tach just isn't accurate enough

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Riceintegrars &raquo;</TD></TR><TR><TD CLASS="quote">hi guys, i need to knwo what the redline is on this motor and where does the peak power come in? anyone know, its not usdm itr motor but jdm itr motor.
anyone?
thanks</TD></TR></TABLE>

I'm not sure what you're up to, but the dyno plots for all the ITR motors will look about the same.

If you are after maximum acceleration on a basically stock motor (UKDM, USDM, or JDM) you do not have to carry it to redline every time. On a stock motor, if you are careful with your senses, you will notice that the car's progression of acceleration slows the farther you get past 8000.

The motor mated to the stock gearbox (either axle ratio) is designed to keep you on the cam if you are shifting in the 8000-8200 range, and you won't really accelerate faster if you carry it to the 8500 redline.

[I deleted a few posts because it looked like someone made a typo and then other people expounded on this and that, with the potential of misleading a relatively new member.]

 

my usdm type r used to hit rev limit at 8600 then it just started goin to 9k all day lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxsir29 &raquo;</TD></TR><TR><TD CLASS="quote">my usdm type r used to hit rev limit at 8600 then it just started goin to 9k all day lol</TD></TR></TABLE>

Well...my tuned motor appears to shift at 9500, but I know it's not, really.

 

Mine stops @ 9,100, I'm the winnaR!

 

mine's at 8900 rpm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Opie &raquo;</TD></TR><TR><TD CLASS="quote">Mine stops @ 9,100, I'm the winnaR!</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

Well...my tuned motor appears to shift at 9500, but I know it's not, really.</TD></TR></TABLE>

Still on Greek time, Opie?

 

I wish, just fried from 65 hr work weeks since the vacation

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

Well...my tuned motor appears to shift at 9500, but I know it's not, really.</TD></TR></TABLE>

i agree completely, my tach seems to be banging out at over 9600 but my rsm reads 9200, (jdm & spoon ecu) fella at the rollers told me the rsm was far more accurate,
its the same with mechanical speedo's nearly always off,but people will believe what they want to!!

 

i make it to 8900 on 3rd gear on different gears it goes up in the high 8's never made over 9000 i guess it depends on the momentum

 

my redline is set at 9450rpm. but i don't take it that high. i shift at 8600-8700 to compensate for my raised powerband.

 

the itr motor has a redline of 9200-9300 i dont know the other thing

 

i thought the redline was 9200 on the jdm motor not the usdm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by INTEGRAxsi1 &raquo;</TD></TR><TR><TD CLASS="quote">the itr motor has a redline of 9200-9300 i dont know the other thing</TD></TR></TABLE>where the hell do you get this information..

 

http://www.theonion.com/content/node/27836

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">If you are after maximum acceleration on a basically stock motor (UKDM, USDM, or JDM) you do not have to carry it to redline every time. On a stock motor, if you are careful with your senses, you will notice that the car's progression of acceleration slows the farther you get past 8000.</TD></TR></TABLE>
"Careful with your senses" == finely tuned butt dyno

George, this is wrong... If the peak power is at 8000, you'd "like" to have that be in the center of your gear, not just at one end of it.

If I take my stock ITR motor to 8000, I'm at peak power, and I'm accelerating as fast as I can at that given speed. If I carry it a little higher, the rate of acceleration (torque that the motor is making) is dropipng. If I shift right away, I'll be 40 HP below my peak, and accelerating a lot slower because the torque difference between 6000 RPM and 8000 RPM isn't enough to overcome the torque multiplication difference. The torque multiplication in the lower gear is worth keeping as long as possible (or, until the torque at the wheels in the lower gear is the same as the torque at the wheels in the next gear, which probably happens at 9000-9200 on a stock motor :S)





Modified by Chris F at 1:13 PM 9/4/2005

 

3IAR
Numbers behind my previous post...

5-Speed Manual (Standard)
Gear Ratios (:1) / (Rpm) Mph
1st 3.230 / (8400 rpm) 39 mph
2nd 2.105 / (8400 rpm) 60 mph
3rd 1.458 / (8400 rpm) 87 mph
4th 1.107 / (8400 rpm) 115 mph
5th 0.848 / (8000 rpm) 143 mph
Reverse 3.000
Final Drive 4.400

Let's take 2nd to 3rd gear shift at 60 MPH as our example shift.

On this particular stock ITR dyno, the motor is making 92 ft-lbs at redline (and dropping), and 110 ft-lbs at 5792 (5800) RPM.

After gear multiplication, the 3rd gear is making 110 * 1.458 * 4.4 = 706 ft-lbs at the wheel at 60 MPH.

After gear multiplication, the 2nd gear is making 92 * 2.105 * 4.4 = 852 ft-lbs at the wheel at 60 MPH.

Even on a stock ITR, with the torque falling quickly after 8000 RPM, you'd still rather carry that lower gear as far as possible. Easy way to figure it out is glance at the dyno, and see where the HP in one gear/RPM crosses the HP in the next gear/RPM.

(for instance, it LOOKS like at about 9000 RPM, you'd have "about" 133 WHP in 2nd, and after a shift you'd be at about 6200 RPM you'd have the same 133 WHP. Using torque multiplication you'd have about 112*1.458*4.4=719 ft-lbs in 3rd, 79*2.105*4.4= 732 ft-lbs, so 9000 would be a much better time to shift, theoretically, assuming the motor could take it.)

 

i have JDM ITR chipped ECU .. and VS USDM itr ecu

with the jdm itr ecu i can rev her up to 8900.. usdm.. 84-600