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  1. #1

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    Need Tuning? How to tune ??? And run 30%!

    First Seal your engine with High-temp RTV, Seal the carb. neck, and the back plate,this will help hold your tune andseal up any air leaks, all engines will have some leaks.plus it will keep your temps low (170-190 ish)next set your needles to stock settings first for the break in (Rich HSN), break in with 20% fuel, 5-6 tanks., after break in, change the glow plug, use a hot plug, (Thunderbolt #3 works best)and getByron fuel GEN2. Get Byron Race3000, or Pro-driver3000 It's 30%, but don't lean out too much! Always watch for that thin trail of Blue smoke!! at full speed, if there's NO smoke than your too lean, richen the HSN 1/8th turn out. after tuning the HSN(high speed needle), start to tune the LSN, you want your throttle to be quick and instant!, but NO Bogging up to get to full throttle., it should rev up quick.

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  2. #2

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    RE: Need Tuning? How to tune ??? And run 30%!

    Can u post some pics on what to seal? I havent sealed mine but ive ran it pretty hard and did the break in. Did i mess up the engine?

  3. #3
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    RE: Need Tuning? How to tune ??? And run 30%!


    ORIGINAL: rx7devil210

    Can u post some pics on what to seal? I havent sealed mine but ive ran it pretty hard and did the break in. Did i mess up the engine?
    Do you have a problem with the engine? Is it running inconsistantly?
    When I die, I want to go in my sleep like my grandfather,not screaming
    like the passengers in his car at the time.

  4. #4

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    RE: Need Tuning? How to tune ??? And run 30%!

    I think i have an air leak because it idles perfect then jumps up and starts idling high and rolls forward. I figured it might need to be sealed. Hopefully i didnt ruin the engine.

  5. #5
    Anthoop's Avatar
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    RE: Need Tuning? How to tune ??? And run 30%!

    In general an air leak will cause the idle to be very erractic and the engine will be very difficult to tune.
    I will hazard a guess that this is a tuning issue.
    If the crankcase loads up with fuel it will cause a low idle speed...once this fuel is burnt the idle speed will increase.
    When I die, I want to go in my sleep like my grandfather,not screaming
    like the passengers in his car at the time.

  6. #6

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    RE: Need Tuning? How to tune ??? And run 30%!

    so what should i do?

  7. #7
    Anthoop's Avatar
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    RE: Need Tuning? How to tune ??? And run 30%!

    You need to establish if you have a tuning issue or an air leak?
    When I die, I want to go in my sleep like my grandfather,not screaming
    like the passengers in his car at the time.

  8. #8

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    RE: Need Tuning? How to tune ??? And run 30%!

    I ran it today an i think its just a tunning issue. But dont you think i should seal the engine up anyway?

  9. #9
    Anthoop's Avatar
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    RE: Need Tuning? How to tune ??? And run 30%!

    ...if it ain't broke don't fix it.
    When I die, I want to go in my sleep like my grandfather,not screaming
    like the passengers in his car at the time.


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