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  1. #41
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    You won't feel it, but it adds up!

    This is why I said don't use washers, just use what you got and adjust them to the best that you can.

    This should give you better MPG's though
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  2. #42
    I'm a motorist!
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    Quote Originally Posted by Vadim View Post
    You won't feel it, but it adds up!

    This is why I said don't use washers, just use what you got and adjust them to the best that you can.

    This should give you better MPG's though
    Do you have any data to isolate the influence of indexed plugs? Usually you are pretty careful about documenting these things.
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  3. #43
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    Quote Originally Posted by Benito Malito View Post
    Do you have any data to isolate the influence of indexed plugs? Usually you are pretty careful about documenting these things.
    Yep sure do, it's not the most accurate because the BHP readings are coming from the ScanGauge, but its better then nothing

    Few posts back I posted this...
    Quote Originally Posted by Vadim View Post
    ....
    Conclusion
    Just by doing a little simple index, it looks like I saw about a 10 BHP increase at the same intake air temperature
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  4. #44
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    Quote Originally Posted by Vadim View Post
    You won't feel it, but it adds up!

    This is why I said don't use washers, just use what you got and adjust them to the best that you can.

    This should give you better MPG's though
    i think KEVO didn't use any washers at the end... i guess he didn't feel any difference in power and probably most of us wouldn't because we don't have the scan gauge to tell us the gain... the real test will come when KEVO takes it to the track and lays down a new personal record for his super stock b13!

  5. #45
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    Quote Originally Posted by Fernando Alday View Post
    i think KEVO didn't use any washers at the end... i guess he didn't feel any difference in power and probably most of us wouldn't because we don't have the scan gauge to tell us the gain... the real test will come when KEVO takes it to the track and lays down a new personal record for his super stock b13!
    Oh I know he didn't, I was just saying that the washers are a waste of $20 , well at least for our cars (since our pistons will hit the spark plugs if the spark plug is too low).

    I doubt gains will even be as high as 10 BHP on a stock car...

    Now since my Bosch +2 plugs finally took a dump, started getting bad MPG and terrible power (but thats only in the temperatures below 90*, the Bosch plugs seemed to get the HP back when it was hot outside, which is really weird!)

    Anyway back on subject, I picked up my old BKR6E-11's, and side gapped them, then indexed them. I was able to get 188 BHP at 78* incoming air temp.

    Thats pretty good compared to before, now this is on my older BKR's not the newer ones that I did the tests with couple posts back.

    Once I get my grinder, I will make some good side gapped plugs, a How To following it, and will post some results
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  6. #46
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    thanx VADIM...hope to se the full post, on index and side gap, you know, the whole enchilada on how to get that little extra from your spark plugs, meanwhile KEVO should drag his lazy ass down to the strip and lay down some runs to get new times with the new sparks and the indexing...

  7. #47
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    Quote Originally Posted by Fernando Alday View Post
    thanx VADIM...hope to se the full post, on index and side gap, you know, the whole enchilada on how to get that little extra from your spark plugs, meanwhile KEVO should drag his lazy ass down to the strip and lay down some runs to get new times with the new sparks and the indexing...
    Actually I don't feel the car is running pretty good, I can feel it hesitate, anyway I'm not going to the track until the VE swap
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  8. #48
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    I did couple mods at once, so my results are not going to show 100% accurate for a particular item.

    But lets just say I hit 38 MPG Highway today!

    I will keep on driving more to see if sticks

    Kevo, was the hesitation there before the index?
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  9. #49
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    KEVO, hesitation?... mm did you advance de timing?.... confieza perro !!! le moviste al tiempo? o le echaste de la verde?
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  10. #50
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    Quote Originally Posted by Vadim View Post
    I did couple mods at once, so my results are not going to show 100% accurate for a particular item.

    But lets just say I hit 38 MPG Highway today!

    I will keep on driving more to see if sticks

    Kevo, was the hesitation there before the index?
    It wasn't before I did the EGR removal, there's no SES light at all

    Actually runing 87oct gas, I feel the ride strange and over 5k RPM feels strong, time is set as 17, today I'll fill the tank with 92oct
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  11. #51
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    So the EGR delete could be the reason for that...
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  12. #52
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    i hate to bring this back from the dead but something needs to be adressed. it does not matter which way the spark plug is pointed because no valves are open during ignition. have you guys forgoten how an engine works? and the first valves to open after ignition is the exhaust valve. remember timing is based of top dead center which is on the COMPRESION stroke if valves are open there is no compression.

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  13. #53
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    Quote Originally Posted by macidcrook View Post
    i hate to bring this back from the dead but something needs to be adressed. it does not matter which way the spark plug is pointed because no valves are open during ignition. have you guys forgoten how an engine works? and the first valves to open after ignition is the exhaust valve. remember timing is based of top dead center which is on the COMPRESION stroke if valves are open there is no compression.

    4-stroke engine - YouTube
    So every guy that's ever proven this on a dyne is full of shit? You obviously have never tuned a turbo engine either. If you had, you'd know that regardless of stroke position - the spark CAN be blown out by boost. Explain that if the valves are closed. Suck squeeze bang blow. Spark indexing works.

  14. #54
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    Explain to me how regardless at any stroke position spark can be blown out if it only sparks at one point in the cycle? Its not the actual air blowing into the cylinder its the air in the cylinder on comprsion that blows out the spark. I've litterally tuned hundreds of engines and I know that a gain of 2 or 3 hp is never a deciding factor unless you can creat the exact engine temp air temp intake temp baro. unless its on an engine dyno you can't measure such a small number.

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  15. #55
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    I just got a bluetooth obd 2 reader to work work the torque app. I will give this a shot and see what happens.
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  16. #56
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    Quote Originally Posted by macidcrook View Post
    Explain to me how regardless at any stroke position spark can be blown out if it only sparks at one point in the cycle? Its not the actual air blowing into the cylinder its the air in the cylinder on comprsion that blows out the spark. I've litterally tuned hundreds of engines and I know that a gain of 2 or 3 hp is never a deciding factor unless you can creat the exact engine temp air temp intake temp baro. unless its on an engine dyno you can't measure such a small number.

    Don't Trust Strangers! How Dynos Lie and When to Believe One > MotoIQ > Magazine Articles
    Have you ever tuned a high boost engine? If you have, and it doesn't seem like you have, you would know about the spark being blown out. I'm not gonna sit and argue with you when you haven't done the research. Boost blowing out a spark is a real thing. If it wasn't - I'd be able to gap my plugs at .045 instead of .027. Believe me, I've dealt with enough of it to know firsthand.

  17. #57
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    Quote Originally Posted by Asleep View Post
    Have you ever tuned a high boost engine? If you have, and it doesn't seem like you have, you would know about the spark being blown out. I'm not gonna sit and argue with you when you haven't done the research. Boost blowing out a spark is a real thing. If it wasn't - I'd be able to gap my plugs at .045 instead of .027. Believe me, I've dealt with enough of it to know firsthand.


    i agree that spark can be blown out but if you read what i said, its not from air coming from the intake port and valves. its from the piston pushing the air to the top of the cylinder.
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  18. #58
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    Indexing gains are tiny, for that reason I've been wanting to consolidate this how to with the Sidegapping one.

    Now with indexing, as long as your ground strap is not directly over the intake ports, your pretty much indexed. Thus just doing your best to keep the ground strap between 3-9 o'clock should do.
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  19. #59
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    "Spark Blow-out" is a misnomer. Sparks are never "blown out" like a candle is or anything like that. It is a horrible name for the phenomenon. What most people refer to as "spark blow-out" is actually better described as "hindered spark" or "prevented spark" or something like that.

    What happens is, the density of the air molecules between the spark plug electrode and the grounding strap gets so high, the coil voltage can not overcome the insulating resistance of the packed air and no spark occurs. The electrical energy ends up arcing inside the coil internally, or causing a plug wire to arc to ground, or possibly delaying the spark plug ignition until ATDC when cylinder density has decreased enough.
    Last edited by BenFenner; 09-16-11 at 11:18 AM.

  20. #60
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    I've indexed dead on with cheap as ass washers.

  21. #61
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    indexed mine last night, took 6 plugs to get it right..

 

 
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