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RTz

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Posts posted by RTz

    400+ hp build questions

    in Nissan L6 Forum

    Posted

    thanks for the sarcasm (lol)

     

    Making 400HP, with "x" parts, is rarely black & white.

     

    The difference in a valve job, at that level, can be quite substantial. That is not a 'part'. That is talent, tooling, and care. Some shops are better at it than others. That's only one aspect of head work. There are countless others. Who's doing the head work, and what are they doing?

     

    Are you using a stock exhaust manifold? Ported? By whom? I assure you, some people know how to do this better than others.

     

    A properly tuned motor can make great power for a long time. A poorly tuned motor will do neither. Who's tuning the motor?

     

    This is a never ending story. It goes on and on and on. Making good power, reliably, is not an X Y Z proposition.

     

    Further, defining a peak number, alone, is nearly as disastrous as listing a bushel of parts.

     

    If it was easy, we'd all be doing it.

    and now im looking for the bad boys...

    in Nissan L6 Forum

    Posted

    Yeah The Main Bearings Are Easy To Find But What I Meant Were The Pieces At The Bottom Of The Picture, To Be More Specific, The Big Block Of Aluminum Where The Main Bearings Go Flush Inside. (in Other Words The First Piece Right Over The Number 3) Lol. Thanks Again.

     

    That's not aluminum... its iron, and its called a "main cap". You're saying you wore into a main cap? :hs:

    IAT and outside air temp

    in MegaSquirt

    Posted

    This is the opposite to what rontyler said

     

    No, we're agreeing with each other. If there were no correction, the AFR would go rich. Thats what I said. What Zmanco is saying is that the system, through correction, reduces pulse widths so that it doesn't go richer. The goal is to keep the same AFR.

    computer for zxt motor, to many choices

    in Nissan L6 Forum

    Posted

    I can't imagine running a highly stressed engine powerfully and reliably with a cheap, low resolution computer for too long.

     

    As long as it provides the right fuel/spark consistently and reliably, it won't hurt a thing.

     

     

    But if I'd spent tens of thousands on a stout engine, I would want, at least, the insurance offered to me by an advanced aftermarket ECU and its potential to tune the engine correctly without catastrophic (and expensive) failure.

     

    Its sounds like you're making the assumption that a minimalist or budget oriented ECU is automatically less capable of providing proper ignition and fuel. In some cases, you'd be correct, but not all. It just 'depends'.

     

    I'm not trying to tell you that MS is just as appropriate as Motec. But, what I am saying is... just because a system has less features, or costs less, doesn't mean it won't do a terrific job for YOUR application. To buy a more expensive system for features you'll never use is not the best use of your budget. A somewhat facetious example... SDS is pretty bare bones... yet its 'just right' for a small aircraft. Useful load and RPM are very narrow, and transitional response is not relevant. Nor is idle control. Anti-lag? Buttery smooth rev limiter? Launch control? Who cares? So on and for forth. Point is, it won't run any better with a $25K EFI Technology system. Don't confuse increased cost with better for your needs.

     

     

    Just maybe I have it all wrong in my head (as usual...its a southern hemisphere thing!). :bonk:

     

    Hey... I like you guy's. Some of the best engine management stuff comes from your back yard!

    computer for zxt motor, to many choices

    in Nissan L6 Forum

    Posted

    Reading what you've just said you can get away with a fairly basic ECU for a race car because you expected that you might crash the thing?

     

    That's not quite how I read him. Part of his point is that some of the fancy-ness can be a waste on a track car. One example, some EMS's have a horde of idle control parameters... not terribly important to a race car. Another, large fuel/ignition tables... a 40x16 table is most likely a waste, especially if the torque curve is reasonably smooth. Etc, Etc, Etc. On the other hand, these types of features can be very desirable on a street car, in terms of drivability.

     

    Different uses, different needs.

    Ignition Coil / No Spark

    in Trouble Shooting / General Engine

    Posted

    I looked in at my ignition coil and on the side of it I see this....well i don't know what it is but it is a small circular transistor mounted on a bracket on the side of the ignition coil.

     

    Its the ignitor. Its purpose is to convert the low current output from the ECU to the high current necessary to run the coil.

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