Flash yours to 9k, let us know how it works.

The only thing stopping me from an ap2 is the 8k (sorry 8.2K) redline.

I've driven a ap2, it for sure feels like it has more torque, but that's a combination of secondary shaft, heavier flywheel and of course the little extra torque.

 

Yep. I had to detune my car to 8k for a month, it sucked. Felt like every time the party was getting started it was time to leave.

 

I have no intention of increasing the rpm limit as it's set. Neither does the OP from what I've read. Anything else is just speculative as to what it could or couldn't handle.We already know that flashpro stuck their neck out to 8500 on the Ap2.Is that because it flew apart at 8600?

 

I asked my tuner about revving an f20c to 9k. He said it would handle it, just not everyday all day like a f20c. Obviously the smaller stroke allows itself to higher revs.

 

TODA valvetrain + AEM EMS can fix that safe and sound, the bottom end should have no problems

 

It's not just about floating valves. There are piston speeds you have to take into consideration. Keep in mind we are not talking a race engine here. We are talking someone who will drive their car daily.

 

I'm taking them into consideration, the F22Cs rods and pistons are solid much more resilient than the head is. In an over-rev situation, what's the first thing to happen? The intake retainers go...and then the valves touch the pistons...I haven't see issues with the pistons/rods being the weak parts of our motors.

 

Some have suggested that an AP2 is probably out of your price range, but i assure you that isn't true. I nearly bought an '05 with 18k on the odometer for $14,500. You should easily find an AP2 with 50k+ within your price range.

 

drive both and see which one you like more. both are reliable, both look pretty much the same, both have convertible tops, 4 wheels and brakes.

i prefer AP1 because it is more raw, you may prefer AP2 because it is more refined. the internet can't make the decision for you

 

I've seen the valves float causing the pistons to slam into the valves, breaking the retainers and popping the keepers loose. But yes, the pistons and rods are stronger than the retainers. Keep square in mind also.