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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: How do you figure out redline?
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Sun, 09 November 2003 23:14
 
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13B's are safe tile 8500 not 9500... and if you want to get technical.. 8400 is generally when harmonics start to distroy seals... i all depends on the tolerances of your motor.. if its quite loose then everything will self distruct before this 
all manufacturs limit something BEFORE the actual limits of the motor... imgine if the redline was set at the ACTUAL limits of the motor... people taking it to redlin day in day out would soon find them selves one expired motor and who would be to blame? the manufactors...
| lang wrote on Sun, 09 November 2003 22:20 |
| ed_ma61 wrote on Sun, 09 November 2003 21:39 |
rev until the engine stops making power??
ahhh, so if i push nos through my 5me, and its still making power at 9000rpm, this is ok????
redline is based on the mechanical and harmonic tolerances of the engine, not on its power characteristics. if i wanted to, i could fiddle the cam timing on my 7m to make 15hp extra at 200rpm past present redline, but i chose not to... why? cause the engine cant take it! piston velocities go through the roof, rod and crank forces the same, valves start to float etc etc
redline is what the manufcturer says, not what you 'think' ... unless you have a damn good resaon based on modifications to bottom end and valve train...
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i know its a bit different but im trying to make a point...
13b's are safe till around 9500 where destructive harmonics start to set in.
so how do you explain the 7000rpm redline, thats 2500 lower than where its still meant to be safe.
the difficult bit is getting it to spin that fast, ie porting, supplying enough fuel ect.
but im pretty sure that a safe redline would be once peak power starts to drop off is its set up properly
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| | Subject | Poster | Date |
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How do you figure out redline?
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mtsbirch | Sun, 09 November 2003 07:32 |
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Re: How do you figure out redline?
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lang | Sun, 09 November 2003 07:48 |
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Re: How do you figure out redline?
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draven | Sun, 09 November 2003 09:45 |
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Re: How do you figure out redline?
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mrshin | Sun, 09 November 2003 09:56 |
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Re: How do you figure out redline?
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ed_ma61 | Sun, 09 November 2003 10:39 |
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Re: How do you figure out redline?
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gianttomato | Sun, 09 November 2003 11:01 |
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Re: How do you figure out redline?
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oldcorollas | Sun, 09 November 2003 14:49 |
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Re: How do you figure out redline?
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gianttomato | Mon, 10 November 2003 00:31 |
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Re: How do you figure out redline?
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lang | Mon, 10 November 2003 03:20 |
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Re: How do you figure out redline?
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lang | Sun, 09 November 2003 12:20 |
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Re: How do you figure out redline?
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Simon-AE86 | Sun, 09 November 2003 23:14 |
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Re: How do you figure out redline?
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Intensevil | Sun, 09 November 2003 10:58 |
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Re: How do you figure out redline?
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truenosedan | Sun, 09 November 2003 11:04 |
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Re: How do you figure out redline?
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Norbie | Sun, 09 November 2003 12:34 |
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Re: How do you figure out redline?
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mtsbirch | Sun, 09 November 2003 16:57 |
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Re: How do you figure out redline?
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mrshin | Sun, 09 November 2003 22:49 |
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Re: How do you figure out redline?
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lang | Mon, 10 November 2003 00:12 |
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Re: How do you figure out redline?
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coronamark2 | Mon, 10 November 2003 00:48 |
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Re: How do you figure out redline?
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gianttomato | Mon, 10 November 2003 02:45 |
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Re: How do you figure out redline?
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coronamark2 | Mon, 10 November 2003 04:02 |
