Breakdowns

I started a season with random breakdowns turned on I broke down three times in the first four races.! Is this random or does it have something to do with engine stress? DaMan

> I started a season with random breakdowns turned on I broke down three times > in the first four races.! Is this random or does it have something to do with > engine stress? > DaMan A little of both. I am running a season with 25% length and I am in the 12th race and no breakdowns yet. I ran a single Dega race and broke down on the 4th lap with same setup I used for 2 season dega races. If you have your 4th gear redlighting(warning light) 3/4 down the straightaway or you shift gears after redlighting you will probably breakdown more often. I only broke down once, but I also have my setups where I don't redlight until I am at the end of the straight or I am drafting. -- Eric Treaster http://www.geocities.com/Yosemite/4092/nascar2.html

>I started a season with random breakdowns turned on I broke down three times >in the first four races.! Is this random or does it have something to do with >engine stress? Random breakdowns are exactly that, random. However, even with random breakdowns turned off, the engine is not indestructible (nor are the tires). Over-stressing the motor by by turning too many RPMs will eventually cause it to fail. (If you really blow past 8500, like 9700 or so, the engine will fail almost instantly... But lap after lap brushing 9200 or 9300 under load will wear your engine out long before the end of medium length race.) Get a taller fourth gear if this is your problem. ---Jim Sokoloff, Papyrus

>>I started a season with random breakdowns turned on I broke down three times >>in the first four races.! Is this random or does it have something to do with

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>>engine stress? >Random breakdowns are exactly that, random. >However, even with random breakdowns turned off, the engine is not >indestructible (nor are the tires). >Over-stressing the motor by by turning too many RPMs will eventually >cause it to fail. (If you really blow past 8500, like 9700 or so, the >engine will fail almost instantly... But lap after lap brushing 9200 >or 9300 under load will wear your engine out long before the end of >medium length race.) Get a taller fourth gear if this is your problem.

Just curious, Jim, is it the number of times over 9200 or is it the amount of time the engine is over-revved? We had a Late Night race at Bristol Friday night, and one of my teammates got nailed by this with 11 to go in a 200 lapper. He was curious as to what the failure mode is. BTW, I warned him about it, must've jinxed him. :( Dave Sparks IWCCCARS Project: http://www.theuspits.com/iwcccars/index.html Late Night League: http://www.sequoia-dev.com/Hawaii/latenite.html Hawaii Handle: davids

It's a cumulative effect by some function of (in decreasing order of importance) amount over-revved, amount of time spent over-revved, throttle position while over-revved, and some minor temperature effects. Engine wear is minimal up to around 8400 RPM, then is slight, but noticable up to about 8700, and then is progressively more severe at higher and higher RPMs. ---Jim Sokoloff, Papyrus

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> >>I started a season with random breakdowns turned on I broke down three > times > >>in the first four races.! Is this random or does it have something to do > with > >>engine stress? > >Random breakdowns are exactly that, random. > >However, even with random breakdowns turned off, the engine is not > >indestructible (nor are the tires). > >Over-stressing the motor by by turning too many RPMs will eventually > >cause it to fail. (If you really blow past 8500, like 9700 or so, the > >engine will fail almost instantly... But lap after lap brushing 9200 > >or 9300 under load will wear your engine out long before the end of > >medium length race.) Get a taller fourth gear if this is your problem. > Just curious, Jim, is it the number of times over 9200 or is it the amount > of time the engine is over-revved? We had a Late Night race at Bristol > Friday night, and one of my teammates got nailed by this with 11 to go in a > 200 lapper.

Wow, so that was it! I wondered where I picked up that extra position! <G> David T.