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Thread: Identifying underhood plastics types used on our cars

  1. #1
    turbo addict
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    Identifying underhood plastics types used on our cars

    Looking to modify a TII black air cleaner box for a larger outlet (mating to a DBB turbo). Trying to identify the type of plastic that was used on these, so I can plastic weld larger outlet on it. Also trying to identify the type of white plastic used on the air cleaner lid and TB bonnet used on the 84-87 T1 cars. This appears to be a different type of plastic. The black plastic on the TII boxes are a slightly greasy plastic and sort of soft. The earlier T1 white plastic is not greasy at all and harder. Didn't have much luck burning them looking for different flame color or odor as noted in FSM. Any plastic experts or gurus out there?
    TIA,
    Todd

  2. #2
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: Identifying underhood plastics types used on our cars

    Polyolefin based.

    https://www.polyvance.com/identify.php I use often.

    The early T1 air box is probably ABS.
    1994 Shadow Sedan. 2.2 N/A, A568 400,000 miles. "the science experiment"
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  3. #3
    turbo addict
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    Re: Identifying underhood plastics types used on our cars

    Quote Originally Posted by 135sohc View Post
    Polyolefin based.

    https://www.polyvance.com/identify.php I use often.

    The early T1 air box is probably ABS.
    Thanks for the link and your info.

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