Rev to 9000rpm???

[tinkerbell]

yeah, it is the 8900 i would be most dubious of...

[Zakarados]

OK question,

The specs show max power at 7600rpm (or 7800rpm i cant remember) does it hold that power all the way to the 8600rpm cut off? or after say where redline starts at 8000rpm does the power peak drop?

[tinkerbell]

no, power drops off past "peak"

[Zakarados]

So, theoretically what would be the best point to shift to get best performance from a engine getting peak KW at 7800RPM and rev cutout at 8600RPM? Very interesting.

[00dc2]

you need to look at the shape of the power curve to know for sure.. but in general, you get the most out of honda engines by shifting at just before rev limit

[freakygeek]

So, theoretically what would be the best point to shift to get best performance from a engine getting peak KW at 7800RPM and rev cutout at 8600RPM? Very interesting.

Shift at the rev limiter... your revs will drop to a higher power output in the next gear. Shifting right at peak power is silly. If you shifted at peak power in a DC2R you would likely fall out of VTEC in the next gear.

[l3vnd1]

what on earth are you talking about?

Rev limiter = fuel cut.

Less fuel/no fuel = Lean ---> Detonation.

[tinkerbell]

So, theoretically what would be the best point to shift to get best performance from a engine getting peak KW at 7800RPM and rev cutout at 8600RPM? Very interesting.

power is irellevent. torque is the king!

you should shift so that you end up in the peak torque in the next gear...

[tinkerbell]

The smoke blowing out was a result of the car running lean.

i meant what are you talking about with the "smoke" comment.

[00dc2]

i disagree completely tinkerbell..

power is the key and torque is irrelevent (when racing) you want to maximise the power output of the engine at all times.. not its torque output

[l3vnd1]

i meant what are you talking about with the "smoke" comment.

On fuel cut - I have seen cars puff out smoke when hitting the limiter.

[ChargeR]

power is irellevent. torque is the king!

you should shift so that you end up in the peak torque in the next gear...

Yeah this is incorrect. Are you suggesting that I should change gears in my Charger to place me at 3000rpm in the next gear where peak torque is and that arriving in the next gear at say 4000rpm where I have more power available is bad?

To say nothing of the fact that spending longer in the previous gear would give higher torque at the wheels and better accelleration. The only reason to shift before redline is if torque and hence power fall off so quickly that the car will accelerate slower in the lower gear. Pretty rare in a DOHC honda where torque holds well to very high revs.

[tinkerbell]

Yeah this is incorrect. Are you suggesting that I should change gears in my Charger to place me at 3000rpm in the next gear where peak torque is and that arriving in the next gear at say 4000rpm where I have more power available is bad?.

yeah, my comment was Honda specific.

sorry.

[ChargeR]

yeah, my comment was Honda specific.

sorry.

Your comment was still wrong .

[tinkerbell]

On fuel cut - I have seen cars puff out smoke when hitting the limiter.

that doesnt mean they are running lean!