Can The Stock Engine Rev Past 7,000 Rpm Safely

[bustafat]

question

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

-stock internals, stock airflow etc

- and assuming your not limited

[Guilt-Toy]

yeah, you should be able to rev it to 7053rpm without any issues... 7054 will snap things...

[bustafat]

probaby should have mention a r33 gtst, so rb25

[bustafat]

probaby should have mention a r33 gtst, so rb25

[slaughter]

proably should have mentioned it only once

[tridentt150v]

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............

[Tangles]

Ive made 7000rpm the rev limit on my re-chipped ecu

was going to be 6500, but upped it at last minute

[G3TFKD]

when i first got my car, i didn't know that the rev limiter was taken out, i took it to 8000 RPM.

my engine never forgave me for that...

[Beer Baron]

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?

[G3TFKD]

nah this was on my 20. my 25 doesn't go anywhere near 6000RPM

EDIT: oh i don't think that comment was to me....

[Lithium]

I have mine set at at 7200rpm rev limit, no problem so far.

[nizmonut]

most engines will peak 8000rpm, but you gotta ask why when most engines regardless of type make there power under 7000rpm????

[The Mafia]

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.

[Lithium]

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...

[N1GTR]

Its a 2.5, rev it to 10k and let us know how you go - 2.5's are cheap enough

[nizmonut]

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

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 June 11, 2008 by nizmonut

[R31Nismoid]

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.

[NYTSKY]

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.

[allthewaytotheskyline]

my stock computer on my rb20det has a rev limiter at 7500....i rev it there all day long.

get top torque all the way!

might i add my engine has never missed a beat...thank god!

[Munkyb0y]

hold on a sec. where is the stock limiter on the 25?

i thought it was around 7000 - 7200rpm

hitting that limiter shouldnt be an issue, as long as you dont live on it.