jvallo7

are high rpms bad 4 a rotary?{ 6 grand or so} can u lose a apex from running that
high?

tandolla

iTrader: (1)

umm.. just to let you know rotary's LOVE High rpms.. that is were all the power is at.. it is good to run high RPM in rotary's tach it out at 8 atleast every week.. toget all the carbon build up out of the housings.

rotary;s are known for there high RPM out put..

tandolla

iTrader: (1)

when i race my car i dont think i see underneath 6.. its at redline the whole time.. * basicly. * i shift at 7.5 or 8 nothin less..

mikaz

yeah, rotarys like the higher RPMs. (This doesnt mean you have to rev the **** out of it all the time tho) They are more forgiving to over-revs than a piston engine. I take mine up to redline probably once a week or so. Generally driving, between 2500 and 3500.

tandolla

iTrader: (1)

yea general driving shift at about 3 or so.. but if racing shift high.

88turbotime

Too much time spent in the high rpm's is bad for any engine, even a rotary, but as stated they are more forgiving than a piston engine, and many people do say that it is good to take it up to redline sometimes to rid the engine of built up carbon.

jvallo7

cool thanx 4 the info its just mine has 140000 miles on it and i heard that @ high mileage+ high revs = bye bye apex seals:{

rx7man13b

only redline under load. Free reving=bad

My5ABaby

iTrader: (7)

Why? Could somebody explain to me how revving in neutral is bad? Please... I've seen this posted about 800jillion times, yet no reason.

As for the original question:
High rev's have a tendency to dislodge carbon inside the engine. So, if your car has a lot of built-up carbon deposits, then yeah, revving high could be bad.

HAILERS

No to the rpms and yes you can lose a apex seal at that rpm and higher and lower and anywhere inbetween.

I lost my first and only apex seal doing about 40mph in forth gear. No warning other than the months prior to that I was having starting problems (read low compression). I measured the seals later and they were, how do I say it, smaller than they should be. Worn out covers it pretty much.

That''s why I started rebuilding any RX I bought. You've no clue how worn the things are.

That Rx-7 kid

Yea- that dosent make any sense to me either. Revving the motor high is revving it wether your standing still or flying down the street. If anything I would think that under load is worse because it puts more stress on the motor as opposed to revving it while its in neutral.

Secondmessiah

welcome to the wonderful world of rotaries

when the buzzer comes on (~6900 rpm) then you shift
and definately not before that


a redline a day keeps the carbon away

skrewloose78

ok last year when i went to deals gap in my GSL-SE it had about 180k miles on it and i pushed it hard on that trip. on the gap i stayed above 4500 rpm the entire run thru that. it didnt bother my motor at all but it killed the alternator after making 6 passes.

My5ABaby

iTrader: (7)

That's debatable. It depends on a lot of things as to where your best shift point is. I guess in general it's a good rule... but not necessarily true for everyone.

mikaz

haha.. not. The quicker you can get into the next gear, the faster you're going to accelerate, while staying in your useful powerband. Its been discussed a million times, im not going to bother now.

FCKing1995

iTrader: (3)

Might not kill it right away, but lower rpm's vs. high rpm's... low is better.

Actually, now that I think about it I dont think Ive hit redline in my T2 yet. Reason being a loose mount and bad vibration above 5500, so I get worried and shift around 6200-6500. Which seems to do just fine with me