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Discussion Starter #1
Ok so i was wondering if someone car explain this to me. Yesterday i was driving around and decided to see where my rev limiter was. I was able to get my car up to about 7,000 rpm's and thats where it would kick in. I know thats in the red line but doing it once a year wont hurt the car belive me. Well anyways i get a call from some friends and they say there going to the track for freaky friday. So i say what the hell ill go and see if i can get some better times by shifting a little later around 7,000 rpms opposed to the 6,400 that i was shifting the last time i raced it. Well first time down the track in first gear i hit the rev limiter at like approximately 6,750 rpms and was like wtf? All day i was able to go to 7,000. Well i found out that in first its at approx. 6,750 rpms and all the other gears are 7,000 rpms. When i was messing around earlier i never tried it in first gear so i didnt know. Can anyone explain to me why this is. Is it supposed to be like that or is something messed up? I ended up running slower because i bounced of the rev limiter, the next run it started to rain, so i wasted money even going!
 

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Car hits the redline very quick in 1st, not to mention wheel slip can send it flying, its just a precaution i believe because if its spining up that fast even if it hits at 7000 its not like an instant STOP. The flywheel still has its momentum.

Also, if you are enjoying your redline, dont let your dealership do the ECU update as itll bring it down to a nice 6,500 ish :(
 

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Yeah, since the ECU flash, my tranny shifts nicer, but my rev limiter kicks in at a solid 6600.
 

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Just to add to that, hitting the rev limiter every once in awhile doesn't hurt anything. The engine can handle it, just wouldn't reccommend making it a daily occurance.
 

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You know, I hit the limiter lower in 1st, but 2nd and 3rd are still 6750 it seems for me. (This is post-flash)

And to the original poster, hitting your rev limiter 100 times a years won't hurt your car as long as you take care of it properly.
 

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Yeah, I'd agree with that. The 1-2 rev limit seems to be right at about 6600, but I can get it to about 6750 in 2-3 and 3-4.
 

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Discussion Starter #8
Yeah, i realize that hitting the rev limiter wont hurt the car, if it did they wouldnt have the rev limiter so high. At first i thought that in first it was just reving faster so i slowly brought it up to the rev limiter and it still kicked in at approx. 6,750 rpms. Well i dont plan on getting the ecu reflashed because my car is going to run perfect for me (cough, cough) so now that i know where the rev limiters kick in maybe i can go to the track prepared this time and get a good run.
 

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Just to add to that, hitting the rev limiter every once in awhile doesn't hurt anything. The engine can handle it, just wouldn't reccommend making it a daily occurance.
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I do it on a daily basis :) And my car redlines at 7k each and everytime. I enjoy 7k, which is why it wont ever get the ecu flash :) :drive:
 

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I do it on a daily basis :) And my car redlines at 7k each and everytime. I enjoy 7k, which is why it wont ever get the ecu flash :) :drive:
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Well good for you :nana: . I just didn't want to be the guy that says, "Oh yeah, the engine can handle all kinds of abuse" and then see next week he posts that he spun a bearing or something.
 

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Well good for you :nana: . I just didn't want to be the guy that says, "Oh yeah, the engine can handle all kinds of abuse" and then see next week he posts that he spun a bearing or something.
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:nana: :nana: :drive: Understandable. :)
 

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Well good for you :nana: . I just didn't want to be the guy that says, "Oh yeah, the engine can handle all kinds of abuse" and then see next week he posts that he spun a bearing or something.
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Thats what your warrany is for. :) Unless you are past it.. in which case, thats what 4,500 is for :)
 

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Well good for you :nana: . I just didn't want to be the guy that says, "Oh yeah, the engine can handle all kinds of abuse" and then see next week he posts that he spun a bearing or something.
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Can someone explain what a spun bearing is? And how it is exacerbated by an underdrive pulley? (I always liked that word exacerbate. So rarely get to use it in a sentence....)

Anyway, if you see my sig, you'll see I have a pulley, and am growing curious about if it is going to be an issue, and if so, what are the symptoms I would see to nip the problem in the bud. Thanks.
 

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A crank bearing basically, is nothing more than a stationary piece of metal with oil passages in it. Stationary being the key word. If the crank seizes on the bearing, it will cause it to spin with the crank.

The underdrive pulleys I have seen usually do not include a vibration dampener or balancer. This stresses the crank more since it is mounted directly on the crank.
 

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The stock dampener on the v6's is actually an upgrade from what the duratec's used to have. Contour owners actually sourced the V6 part # just to snag our stock dampeners.

Here's a few of the old threads discussing all the issues involved with crank pulley's and the problems they cause.

http://forum.mazda6club.com/index.php?showtopic=14049&hl=udp

http://forum.mazda6club.com/index.php?show...48110&hl=pulley

http://forum.mazda6club.com/index.php?showtopic=19386&hl=udp

http://forum.mazda6club.com/index.php?showtopic=14950&hl=udp

http://www.contour.org/ubbthreads/showflat...ll&fpart=1&vc=1

http://www.contour.org/ubbthreads/showflat...ll&fpart=1&vc=1

Sorry took me a minute to snag some.
 

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The stock dampener on the v6's is actually an upgrade from what the duratec's used to have. Contour owners actually sourced the V6 part # just to snag our stock dampeners.

Here's a few of the old threads discussing all the issues involved with crank pulley's and the problems they cause.

http://forum.mazda6club.com/index.php?showtopic=14049&hl=udp

http://forum.mazda6club.com/index.php?show...48110&hl=pulley

http://forum.mazda6club.com/index.php?showtopic=19386&hl=udp

http://forum.mazda6club.com/index.php?showtopic=14950&hl=udp

http://www.contour.org/ubbthreads/showflat...ll&fpart=1&vc=1

http://www.contour.org/ubbthreads/showflat...ll&fpart=1&vc=1

Sorry took me a minute to snag some.
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Should I, or can I have a shop check my bearings, or will removing this cause something to go off balance and potentially start a probelm where there may be none? In other words can I check for this, and if I do, will checking cause issues?
 

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The engine is porbably really at 7000rpm but the slow as molasis tachometer is not able to keep up, witch would explain why it's quicker to redline in first.
 

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Discussion Starter #19
Yeah i was also thinking that, well at least i know this time so next time o go to the track i dont waste my money again.
 

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The engine is porbably really at 7000rpm but the slow as molasis tachometer is not able to keep up, witch would explain why it's quicker to redline in first.
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Try going to redline in 1st slowly... same thing. The lag you feel is from the pedal to the engine, not the engine to the tac.
 
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