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  • Roushkateers Roushkateers Mar 7, 2012 7:34 PM Flag

    Blowing a Fuse

    Every year has a new challenge that effects the racing for the season. Last year was the new few can and the reduction of people over the wall. The Biffle team did a poor job at this and cost themselves several top ten finishes and eventually missed the chase.

    This years hurdle is the electronic fuel injection and the circuit breakers for this system. Tony Stewart turned his car off to save fuel, however it failed to fire and Tony blew a fuse. Will this cause teams to abort this very common fuel saving action? It is too early to tell, but it does put teams on alert. Mark Martin also had problems with his system, but still finished in the top ten.

    Nascar season begins with a series of tracks that have nothing in common, so it is hard to get a few for performance, but it should prove a good test for the system. Look for changes in mounting of relay boxes, easier access for drivers and redundant systems. The teams that solve these problems early could get an edge on making the chase.

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    • I see your drift there Goat. Remember the AJ incident with Foyt? He won Daytona because he turned the roll cage pipes into a fuel tank!

    • ho-ho-hold on a second. If they can change an axle in the pits, the front tire changer needs to throw a box of 30 amp fuses in his pocket... ha ha

    • Great read!!

      I'm just too damn old school, you know points and needle jets to control fuel flow and spark..? (It's not quite that bad! LOL!) It appears I am falling behind the curve though...

      Looks like I'm going to have to read a book or two in order to talk NASCAR in this day and age of you kids and your dang-nabbit technology...


    • I will give that old Chrysler some credit. The motor was still running in her up until 2010 when I finally told my daughter park it because I didn't want to mess with the braking system any longer. That K-car so to speak had 392 thousand miles on it. My wife gave birth to my youngest son in that car in 1991!

    • Honestly, I have bought cars since that '85 Chrysler Lebaron
      but except for a '97 Dodge Ram 4x4 Quad cab pick up, I haven't own any Chysler products since. To tell you the truth I hated that damn pick-up as well. The trainy was a piece of shit
      and the motor had to be rebuilt at 76,000 miles. Now mind you I take good care of my vehicles so I don't care for Chrysler stuff to much anymore. I do like the new retro models they came out with, but then again, it's a shame we all aren't driving one.

    • This is only one they will face. There is many waiting to come out. When you think of all the information that the cars we drive are processing. It continuously adjusts itself to run the best. I would like to know what information the fuel system gets. of course it gets crank and cam sensors. does it monitor it's burned fuel ratio O2 sensors? What kind of fines will be handed out for messing with mass air sensors? You know that is going to be a gray area soon traveled.

      With all the complications of this system, wouldn't it figure that the thing that broke down first was a .50 fuse. LoL


      • 2 Replies to A Yahoo! User
      • Use to if you unplugged a O2 sensor on a Chysler after the thig went bad, you could get to where you needed to go. Except for a little problem while braking at a stop, everything would be fine. For some reason once you would get to 100,000 miles everthing would be just fine?

      • Yeah, why that part failure?

        You know, in order to beat the best, NASCAR has to be the best.
        Are they? Do they have the best minds in their camp? Or do the teams own that ground?

        This stuff is all moving targets. You never know what will show up in the garage. Or what's being hidden.

        You wouldn't believe some of the things that get by inspectors. The eyes see something, but there is something else there they don't see. And there are highly talented people whose best talent is hiding stuff teams don't want seen.

        I want to know more about this. We aren't experiencing ground breaking technology with this. EFI of many types have already been used in motor racing. There is already lots of data gathered from other series. And some teams have hired people that have been working with it in racing.

        I want to know more. FEED ME!lol But really.

    • Until NASCAR makes, or allows modifications to the relay systems that drive the EFI..you won't be seeing anyone turning their engine off to save fuel.
      The "surge" protector if you will, worked as it was designed. Problem is, this common procedure wasn't run thru the NASCAR failure mode analysis, which just makes me shake my head. All the money that was spent on this switchover and they don't cover the fuel saving scenario?? No excuse for this to be a problem in my opiniion.
      A circuit breaker? Gimme a break...
      Of course I don't have a Twitter account, maybe if I did France would listen?? LMAO....

      • 2 Replies to Dawg™
      • I think your right there Dawg, but the blame should be placed on the team. You'd think that the team would have experienced this before now, especially if they had tested for all scenarios. Stewart's R+D must have dropped the ball here.
        There were other teams who were conserving fuel but didn't
        shut down. Maybe they knew what would happen? I feel perhaps they need to allow the teams to install a back up system such as in the voltage system. I think this was something that just happened and shouldn't have, you know?

      • But, Dawg, that's assuming they didn't do the research. I have to believe that they did. Do we even know for sure that part failure is ruled out? And it's possible to have something work hundreds and thousands of times in the lab, but fail when in the field.

        The EFI is so efficient so far that we don't see exhaust flames any more. No extra unburned fuel to flame up.

        It also could be that stopping and restarting the engine could use more fuel than they save. There are just lots of variables I haven't seen anything about. I have to admit that I haven't looked for them either. But I do check all my sites daily.

        I guess I'm just saying the jury is still out for me.
        I want me some more proof.lol

    • Yota's blowing up last year... EGR's this year?

      • 2 Replies to John D
      • EGR was not the only failure. Each manufacturer had one at least. Could this be a result of the fuel system? Could it be that they may have been running too lean creating a lot of heat? Just a question I have to ask with the spread on the manufacturers this year. No one stands out.

        The other question I wonder if we haven't started to see. Will crew chiefs find they have a lot of trouble figuring the fuel mileage? Depending on the system, some will allow you to run but you would have very little throttle to hold speed. this would suck when your out of gas but could help keeping you running while refueling. I'm guessing by the duel siphon fuel pump this one just drops dead on you. sucks all the gas in and when empty your out. This system will adjust through out. Those who think with there foot will get more out of a car than a car then those who just have a foot to floor mentality. I think we will see much more come of this fuel mileage thing in coming weeks. Especially when we have those long green runs.


      • This is just another glitch in a long history of glitches in motor racing.
        We find them. We fix them. And we keep on racing.
        It's been that way since the first two autos raced. And will continue long after there are no more engines/motors in racing.

        It won't be long before the fix is in for this problem.


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