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Thread: KMiata SCCA Solo XP swap

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  1. #1
    High Speed Low Drag aMaff's Avatar
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    KMiata SCCA Solo XP swap

    It's finally getting close enough that I want to get started on prep work for this project since I've got most of the parts needed now.

    The first bit of prep was the steering rack, and so as to not lose the NB rack bolts I figured I'd put the bolts into the threaded holes in the V8R-sourced subframe.
    3 out of 4 had powder coat completely boogering the bolt holes. On the upside, the thread pitch of those holes is M12x1.25mm, which is the M12 tap I don't actually have in stock.
    A quick Amazon shopping trip and a couple days later, the tap comes in.
    After chasing the threads in the good bolt hole and 2 of the 3 bad ones, I realize 1 of the engine mount brackets completely blocks access to the 4th. Improvise and overcome right?

    Turns out, a 5/16" 12-point socket makes a good-enough narrow access tap wrench for an M12 tap.



    Nickolaus G recommended I check the rest of the holes on the subframe, and sure enough, the news is equally "good".

    Nope.


    Nope.


    Nope.


    Nope.


    Nope.


    Next move is to run to home depot to get some 3/8 rod (since I'm apparently out) to make a bore-polishing sanpaper flap tool to clean these out before I try bolting this whole thing to the car. Probably need to clean up the surfaces where the eccentric washers bear on the subframe as the powdercoat is probably way too thick there and might limit adjustment range. I'll re-paint everything to prevent rust, but it'll be a lot thinner than whatever 1/8" of powdercoat they slapped on this thing with no protection on bolt holes....
    ~Andrew
    Atlanta Region SCCA
    114 DP

  2. #2
    No words bazooka joe's Avatar
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    Oh boy! Should be a fun thread !

  3. #3
    High Speed Low Drag aMaff's Avatar
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    SITREP:
    Good news: I got the bores cleared out.
    Bad news: they're banana shaped and the bolts won't go in.



    The bolts bind up solid as soon as they get to the 2nd weld, so it's super warped
    I could bash it in with a hammer, but that's going to lead to some serious suspension bind. And I don't have a 15mm reamer sitting around (and a mill big enough to fixture this damn thing in) to fix it myself.




    I appear to have been the very unlucky person that got a bum part. David with KMiata has been awesome to work with and has been super apologetic. He says he's only seen one of these in the last 2 years once the production kits started going out, and they're going to get another one sent out ASAP. Super frustrating, but I'm glad to be finding it now rather than in a couple months when I'm starting in earnest.
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  4. #4
    High Speed Low Drag aMaff's Avatar
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    Steering rack's ready to go (minus a couple zip ties to secure the boots).
    New inner tie rods, new R Package outer tie rods, and my home-brew steering limiters.

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  5. #5
    High Speed Low Drag aMaff's Avatar
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    I got the ends of the frame rails where I cut out the bumper bar boxed back in, for both strength and safety working around that area.

    MIG welding thin, old sheet metal with .030 wire is a pain in the ass but I made it work. I need to get a bigger piece of copper to use as a heat sink for stuff like this, but the little Harbor Freight copper spoon did the job.





    And of course, a little "grinder and paint make me the welder I ain't" to complete the look.



    I wanted to finish the bumper-bar part today as well (boxing in the ends, and welding the 'ears' to the bar), but I broke the bandsaw blade (it just never ends...) so I'll mess around with those tomorrow.
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  6. #6
    High Speed Low Drag aMaff's Avatar
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    Good news: KMiata is having another subframe sent out today.



    While I wait for that to come in, I figure I might as well do some of the small things. I have a depowered NB rack as specced out for the subframe mounts, but didn't realize (until reading through the full documentation) that the 2 small hydraulic fittings on the main tube of the rack housing need to be cut off. So, I did that, then picked up a couple small 3/16" rivets to JBWeld in





    Once it sets up I'll clean that up & throw some paint on it.
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  7. #7
    High Speed Low Drag aMaff's Avatar
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    I thought I was done with the rack, until I had one of those "oh shit, you dumbass" realizations while drifting off to sleep last night.

    There is a shoulder on the new style Inner Tie Rod locking washers that goes on the OD of the rack, vs the old style washers that sat on the OD of the tie rod's threads.
    I realized the rack limiters I made are a really snug fit on the rack, and might not clear the washer. I pulled the boots off and turned the rack through its full range of motion and sure enough, I'd managed to reduce the total travel by another 1/4 turn or so (1/8" per side, give or take).



    I threw it in the lathe and put a counter-bore in it to clear the washer on 1 side, but still ride nice and snug on the rack:



    Much mo' better.




    Of course, taking those staked on washers off broke the areas that were staked, so I clocked them 90 degrees and had 2 fresh areas on the shoulder to put new stakes in. Those plus red loctite (again... removing the inner tie rods wasn't fun) should be good to go now.
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  8. #8
    High Speed Low Drag aMaff's Avatar
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    Finished off the bumper bar side of things today. Welded the ends, then welded the 'paddles' to the bar.

    I'm pretty proud of this one. Turns out, getting welding practice makes your welding better.




    All welded up, with a couple coats of paint.



    On to the next. Probably going to finish up the steering linkage next, then start working on the fuel system.
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  9. #9
    No words bazooka joe's Avatar
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    You’ll be done for the hill climb?
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  10. #10
    High Speed Low Drag aMaff's Avatar
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    Not KMiata content as much as XP content, but these are currently being CNC'd

    Last edited by aMaff; 07-17-2019 at 09:31 AM.
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  11. #11
    High Speed Low Drag aMaff's Avatar
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    Still no. Timetable's always been to tear it down to start this properly *AFTER* the hill climb in August. I'm just starting to work on some of the finnicky out-of-the-car stuff while I'm here. Probably going to tackle the oil pump / chain tensioner / sump / oil pickup next, but that's a big enough job I keep kicking it down the road. It's not really THAT big, I just haven't been able to string a day together to do it.
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  12. #12
    No words bazooka joe's Avatar
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    KMiata SCCA Solo XP swap

    Quote Originally Posted by aMaff View Post

    Still no. Timetable's always been to tear it down to start this properly *AFTER* the hill climb in August. I'm just starting to work on some of the finnicky out-of-the-car stuff while I'm here. Probably going to tackle the oil pump / chain tensioner / sump / oil pickup next, but that's a big enough job I keep kicking it down the road. It's not really THAT big, I just haven't been able to string a day together to do it.
    Ok, got it! Which one are you doing again?
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  13. #13
    High Speed Low Drag aMaff's Avatar
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    Finally starting to move in the right direction of putting stuff ONTO the motor vs taking stuff off. Water pump housing and oil pan are on.

    Last edited by aMaff; 07-18-2019 at 11:21 PM.
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  14. #14
    High Speed Low Drag aMaff's Avatar
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    Picked up the Nine Lives Racing Big Wang this morning. Still waiting on the 2nd elements to come back in stock, but once they do that'll go on as well



    Last edited by aMaff; 07-18-2019 at 12:18 PM.
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  15. #15
    High Speed Low Drag aMaff's Avatar
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    Which hill climb? Chasing the Dragon in Robbinsville, NC
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