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Thread: Gen 3 Coyote Motor Mount bolt size

  1. #1
    Senior Member Junbug's Avatar
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    Apr 2022
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    Gen 3 Coyote Motor Mount bolt size

    I'm dropping in my engine tomorrow and laying out all the bolts I'll need. It seems there isn't specific listing of bolt size for the Coyote motor mounts to motor block. I have the Energy Suspension kit as part of the complete kit, along with the provided spacers. No where do the instructions or manual state what size the motor mount to motor block bolts are. Of course I've dug through my boxes of bolts, and the only ones that fit are the ones that came with the transmission mount/spacer kit. These ones are stamped grade 8.8 and appear long enough, but I'd like confirmation if that is correct.
    Thanks,
    -Byran
    -Bryan
    Mk4 Roadster w/ IRS, Forte Gen 3 Coyote/TKX, Wilwood Brakes
    Build thread https://thefactoryfiveforum.com/show...oyote-TKX-EFI)
    Ordered: 6/27/22, Delivered: 1/20/23, First Start 10/16/2023, Go-Cart 3/30/2024

  2. #2
    Senior Member edwardb's Avatar
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    According to my notes, those are M10 x 1.5. I don't remember where they came from on my Coyote builds. I think they came with the kit. But don't remember any details. Easy enough to check and should be widely available.

    What you have stamped "grade 8.8" are not the right ones. That's an SAE designation. Those aren't metric bolts and the Coyote is all metric. They may fit (some do, sort of) but not exactly right. Similar hardness metric bolts would have a "10.9" or "12.9" (slightly harder).
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

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