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  1. #1
    spud's Avatar
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    Fired Up 1390 Tonight

    I fired up the 1390 tonight. It sounds good, very snappy throttle response with the Black Jacks. I was checking torque on the head bolts and one of the bolts wouldn't hold torque. So now the head has to come back off and a time-sert goes in. Any helpful advice would be welcome.

    Thanks


  2. #2
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by spud View Post
    I fired up the 1390 tonight. It sounds good, very snappy throttle response with the Black Jacks. I was checking torque on the head bolts and one of the bolts wouldn't hold torque. So now the head has to come back off and a time-sert goes in. Any helpful advice would be welcome.

    Thanks
    Using SS head bolts ? Or the OEMs ?

    Check and double check them all before you dis-assemble it. That way you can repair all the questionable ones while the heads are off. When using the timecerts, be sure to counter sink sink the insert deep into the cylinder so that when installed it is a little below the surface. Also I red loctite the insert, and oil the install tool threads or it can break off in the insert.

  3. #3
    spud's Avatar
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    OEM's thanks. What a bummer.

  4. #4
    Duke's Avatar
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    Use only the OEM bolts.

    When I did Aubrey's I taped te top of the cylinders real well and just cut an opening where I had to drill. Towels packed tightly everywhere and the shop vac hose ziptied right beside the location. Piece of cake unless its one of the front 2. Then you need a 90 degree drill.

  5. #5
    spud's Avatar
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    Middle cylinder. I was going to cover everything like a surgical procedure. Just like you stated. I don't think the bugs will be worked out for WF so the ported 1300 will go.

  6. #6
    Hydrotoys's Avatar
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    Jim,
    verify that the surrounding material didn't warp and pull out as well. Otherwise the timeserts will be fine...shouldn't hold you up!

  7. #7
    spud's Avatar
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    Ok. The engine is assembled using all brand new OEM fasteners, brand new OEM crank trued and welded by Riva. No corners cut anywhere.

    I'll pull the head tonight and post some pictures. I figured there would be a few minor bugs to get worked out knowing the history of this topend.

    The rest of the fasteners all hold torque specs no problems.

    Thanks

  8. #8
    Moderator Insanediego Joe's Avatar
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    Cant wait to see this monster run 80 with you sitting on the seat!

  9. #9
    GO Spud, those time certs, or heli coils as i call them are a piece-o-cake to install... The best time of year to test is here.. Cool weather is on the way. Turn the fuel up and fly...

  10. #10
    Caution raider fan in the area !!
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    go,spud racer go..........>

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