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Can you tell me how long my piece of string should be?

motor condition, type of use/abuse all move the goal posts. Why would you want to anyway, a stock R33 has no real power in the top end anyway.

Cos, you could R+D it and then tell everyone how long it lasted............

personally if it were my 25 I would not be revving it past 6500, but it's your engine so up to you. sure it will survive 7000 a few times, hell it could survive 8,000 a few times... but for how long?

lol, this is a thread full of comedians.

Find out where the power peaks and drops off, and set the rev limit there.

If your peak power is beyond 7,000rpm, then you have a massive turbo that requires a built engine anyway.

lol, this is a thread full of comedians.

Find out where the power peaks and drops off, and set the rev limit there.

If your peak power is beyond 7,000rpm, then you have a massive turbo that requires a built engine anyway.

Your shift point shouldn't be at peak power, it should be where you have got an optimal area under the curve. I aim for ~500rpm after peak power...

the idea of rev limiters and tachometer shift lights go hand in hand, when you change gears you want the engine rpm to fall back right into the middle of the power/torque area when the motor is just at its peak power levels...(where the hp and trq curves meet/intersect or are closest to each other...within reason of course)

for example the dyno sheet below for my gts4

post-50030-1213168284_thumb.jpg

the sweet spot is 5150rpm, theoretically i would want the engine rpms when changing up to drop back to anywhere between

4200 and 5300 rpm.

for example if a rb engine bolted to a manual box drops 1100 rpm between 2nd gear to 3rd gear the ideal shift time would be 5000 to 5500 rpm

to get the maximum amount of power when accelerating. this is a rb3026det freshly rebuilt for drift, mildly tuned @8psi so there's not really any call to go over 7000 rpm, and even then you only want to go past 6000 once in top gear.

Edited by nizmonut
question

can the stock engine rev past 7,000 rpm safely??

-stock internals, stock airflow etc

- and assuming your not limited

More to the point - stock airflow (which one assumes is turbo/IC and so on)

Absolutely useless and pointless

Either way, luck of the draw over the limit, might last a while, might last a bit longer, might not

Simple really.

One of my first Power FC tunes on the highflow turbo i had,the rev limit was set at 7500rpm.

Was like this for about 8 months and saw 7500rpm a number of times,though was not held there for any more than about 3 secs.

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