the fact is there is only one report of a motor blowing up. there are tons of us that are running ap1 ecus with ap2 motors.
The main problem is running ur ap2 motor at 9k alot.

 

let me end this debate

Greddy turbo'ed ap2 engine in ap1. Sees 9k at lease a few times a day my DD well maintained 20k + miles

i'm here all night.

 

question, since we're on the topic.

i HAD an ap1 motor. swapped an f22 in and just got tuned for 8500rpm. is that higher than stock redline on an f22? what IS the stock redline officially? is 8500 safe enough?

 

OK, Let me add more to the facts, since you didn't really show any.

-Mean Piston Speed
Ap2 8000rpm (default redline) = 24.19 m/s
Ap2 8280rpm = 25.03 m/s

Ap1 8900rpm (default redline, not 9k) = 25.03 m/s
Ap2 8900rpm = 26.91 m/s

Looking at mean piston speed Ap2 is the same as Ap1 at 8280 rpm, at 8900 rpm it is 7.5% more than Ap1.

But if you studied physics, mean piston speed doesn't mean much. Since what we after (what everyone worries about) is side-loading. In basic terms, we need to know the piston accelerations at every rod angle. Force = Mass * Acceleration right? But there is one more thing to that equation, since the piston is at an angle, we need to multiply it by Cosine (angle-measured vertical in reference to the horizontal plane to the piston rod).

The only thing I haven't done research on is Mass, I'm going to assume this as a constant M for the time being. If you have knowledge on this, please fill me in.

For calculation purposes, I'm going after max piston acceleration.

-Ap2 8280 rpm = 44,427 m/s^2
-Ap1 8900 rpm = 46,766 m/s^2
-Ap2 8900 rpm = 51,329 m/s^2 --> 9.8% more than Ap1

If you find any error in my calculations, please feel free to correct me. I would like to know if I made any mistakes.

Finally, to answer your questions. I would not rev a 2.0 to 10k stock, for two reasons 1. Dyno shows that power drops signficantly after ~8400 rpm. The engine power at 10k would be the same at ~6.5k. The car would loose a lot of inertia.
2. I would not rev my 2.0L to 10k without doing any calculations.

Now food for thought, Ap1 10,000 rpm :

Mean piston speed = 28.1 m/s --> 12% more over stock , 5% more over Ap2 at 8900 rpm.
Max Piston Acceleration = 59,040 m/s^2 ---> 26% more over stock , 15% more over Ap2 at 8900 rpm.

Back to the topic, I'm currently running my Ap2 with an 01 ECU. I don't rev all the way to 9k. I usually shift at 8500 rpm and chirp the tires almost every time. I shifted to 9k several times, but the feeling after 8.5k feels slow. It is my in opinion that the drastic drop of power after 8.5k makes the car feel slower. The Ap2 engine swap into the Ap1 will be ok. From the board, Billman250 has done many of this swap.

Finally Ap2 at 8500 rpm

Mean piston speed = 25.7 m/s -->1.5% more over Ap1 at 8.9k
Max piston acceleration =46,819 m/s^2 ---> 0.1 % over Ap1 at 8.9k.

Again, please correct me if I'm wrong. I would like to know if I made any mistakes in my calculations. I approached this from my personal best knowledge and education, I'm certain that there are many more things I have to learn about automotive engineering, and if you feel that I left anything out, please educate me and everyone on this board. But please stay with the facts, provide some numbers, calculations, and what not. Fyi, I'm a California Professional Civil Engineer.

 

f22 redline at 8k, fuel cut at 8.2k. See my post above and make your decision.

 

Back to OP's question. So engine harness and clusters will work with an F22C in an AP1 with AP1 ECU and vise versa with F20C in AP2 with AP1 ECU?

 

The cluster will work fine. The engine harness, I don't know, but check out the thread below. Personally, I would contact Billman250 and get a straight answer.

Check this thread out, lots of good info about Billman250 doing F22 swap into ap1:
https://www.s2ki.com/forums/index.ph...ic=254276&st=0

It's getting late here in Cali, good night!