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OK, here we go!

Home-org Forums Nuts & Bolts Tinkering OK, here we go!

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    • Pro
    • ★★★★

    IYKYK

    It has begun

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    • Ace
    • ★★★★★

    Yes…the project definitely has begun…and I have the sore muscles and dirty clothes to back that up…LOL!!

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    • Gear Head
    • ★★★

    Looking forward to seeing the J-swap in action

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    • Pro
    • ★★★★

    Nobody hold their breath! I’m thinking May sometime! 🤞

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    • Pro
    • ★★★★

    Hi Dave, Happy New Year!

    What are you doing to your car?

    looks extreme 🙂

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    • Pro
    • ★★★★

    A little “Miata J swap” search on FaceBook should clear thing up. 😉 Let’s just say ole’ blue is getting a heart transplant!

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    • Spectator

    I can’t wait to see this in motion! Let me know if you need a hand or someone to drink beer and “supervise”

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    • Pro
    • ★★★★

    Same here! When we start doing more interesting things I’ll definitely post up open garage days.

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    • Pro
    • ★★★★

    Can’t wait to hear that V8 idle.

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    • Pro
    • ★★★★

    Not a V8, I’m not a fan of changing the gearbox and rear end, ending up with a car that is just a Miata shell. Going Honda V6, keeping Miata trans and diff. Still a Miata, but with a little more Zoom-Zoom! Hopefully somewhat sleeper, with few outward changes.

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    • Gear Head
    • ★★★

    Let the fun begin!  😀

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    • Pro
    • ★★★★

    Spent a few minutes forum scrolling and tripped over this thread…and other parts in your garage..lol!  Whenever you need and extra hand, or a 6 pack, just call!  Can’t wait to hear her roar!  Glad to be a small part of it!

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    • Gear Head
    • ★★★

    It’s been a few months….how about an update Dave.

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    • Pro
    • ★★★★

    Good point, so here is where we stand. With lots of help from Joe, Lance, and Pete we are getting closer to putting the motor in the car. Honda 3.5 V6 is resealed, TB,WP, oil pan, valves adjusted, powder coated valve covers with new seals. MSM trans got rebuilt and strengthened in NC, then I promptly cut a big chunk of the housing out to accommodate the Honda starter, and installed a hydraulic throwout bearing to replace the normal slave cylinder and clutch fork. Got the adapter plate mounted to the engine, and mounted the trans and starter to it. The engine stand mount is kinda cool because it mounts to the side of the engine allowing access to both the front and rear of the engine simultaneously, and can pivot to use gravity in your advantage. Pete DelMastro has been helping me swap out the normal 4.10 ratio ring and pinion for a 3.63 ratio one the Mike Zilinek sourced for me out of Australia. With the added HP and torque of the larger engine this ratio will make first gear usable and make cruising on the highway better at lower RPMs. My original plan of mounting the power steering pump on the passenger side came into conflict with my air intake plans, one had to yield, and the power steering, and my wallet, were the losers. The simplicity of electrically  assisted steering won, KPower makes a bolt in unit specifically for Miata swaps, and it has the ability to dial in the amount of assist from nothing to video game levels. Lance somehow knew that in 2014 the Acura MDX was still using a very similar engine with electric power steering, and the belt tensioning setup bolted right up to my engine solving the problem of tensioning the serpentine belt after deleting the power steering pump. Wiring looks to be the next big hurtle, deleting what I can of the Miata stuff, and rewiring the Acura harness to a standalone Mega Squirt ECU. Wish me luck on that!

    Here’s a few pics:

    Honda 3.5L

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    • Pro
    • ★★★★

    Thanks Dave for the update.

    Hopefully, there exist KPower wire harness specifically for Miata swaps which would make your life easier.

    Building wire harness from scratch is a challenge on its own.

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    • Ace
    • ★★★★★

    Sourcing the bracket off the MDX motor was a bit of an adventure…I was able to get one from Terryville Auto Parts after verifying that the original bracket would bolt on to the V6 Dave is using. problem solved cleanly and using a stock part!

    Now that the diff is reassembled i can get in there and put the rear end back together. Diff housing also reinforced…that sucker ain’t gonna break!

    Small victories…but progress

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