Results 1 to 7 of 7

Thread: 1998 Supra Comp

  1. #1
    Join Date
    Oct 2019
    Posts
    3

    Default 1998 Supra Comp

    I purchased a few weeks ago. Fair to Good condition. Have spent many hours cleaning hull and Cleaner wax above the water line. Interior was covered by a boat cover that leaked over a period of 2 years. Some of the vinyl on the seats has black spots I can't get off...Any suggestions??? I took it out for my First Run yesterday. Top speed was 35mph, Is that normal ? Indmar V-8. I want to restore this boat for my Grandchildren and teach them to ski while I still have my health at 70. Thanks for your consideration folks
    Last edited by michael hunter; 10-12-2019 at 07:56 AM.

  2. #2
    Join Date
    Aug 2010
    Location
    Oyama, B C , Canada
    Posts
    650

    Default

    Quote Originally Posted by BillyBrad View Post
    I purchased a few weeks ago. Fair to Good condition. Have spent many hours cleaning hull and Cleaner wax above the water line. Interior was covered by a boat cover that leaked over a period of 2 years. Some of the vinyl on the seats has black spots I can't get off...Any suggestions??? I took it out for my First Run yesterday. Top speed was 35mph, Is that normal ? Indman V-8. Iwant to restore this boat for my Grandchildren and teach them to ski while I still have my health at 70. Thanks for your consideration folks
    Should be able to achieve approx 44 to 45 mph.
    Your engine is an Indmar .

  3. #3
    Join Date
    Oct 2019
    Posts
    3

    Default

    Thank You for the reply....Could it be the prop? Tuning? carb? engine sounds good. Wonder what to check out 1st etc?

  4. #4
    Join Date
    Aug 2010
    Location
    Oyama, B C , Canada
    Posts
    650

    Default

    Quote Originally Posted by BillyBrad View Post
    Thank You for the reply....Could it be the prop? Tuning? carb? engine sounds good. Wonder what to check out 1st etc?
    Do a compression test on all eight cylinders first!
    All of your suggestions are valid ones.
    Unless you are a good mechanic take it to a reputable marine shop and let them run through the gauntlet for you.
    Could be a combination of things .
    Good luck!

  5. #5
    Join Date
    Oct 2019
    Posts
    3

    Default

    Thanks Again ….Compression check...Coming UP!!!

  6. #6
    Join Date
    Aug 2010
    Location
    Oyama, B C , Canada
    Posts
    650

    Default

    Quote Originally Posted by BillyBrad View Post
    Thanks Again ….Compression check...Coming UP!!!
    Assuming your compression test checks out ok, then you need to chase the cause for your slow speeds compared to normal.
    You can spend a lot of money chasing potential causes on your own .
    Go to a reputable marine shop and let them do it for you.
    Could actually save you dollars in the long run.

  7. #7
    Join Date
    Oct 2019
    Posts
    1

    Default

    I'm guessing there are a lot of suspects with an issue like this?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •