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  1. #1
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    Transom bolt torque

    Getting ready to bolt my jackplate on my hydrostream any ideas on how much to torque the bolts? Sure don't them to come loose but don't want to crack the fiberglass!

  2. #2
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    Plywood core, up to 50 ft. #'s Engine to jackplate 1/2'' bolts 90 lb#s Foam core trans: I am scared to go over 35 ft#'s. Tighten securely and use good nyloc's. Check every few trips for a while to look for any compression if it's a new trans. They don't need to be crazy tight. Just even and secure. Edit.....Use the fine thread bolts too if possible.
    Last edited by XstreamVking; 04-09-2021 at 11:20 AM.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  3. #3
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    I recently contacted Skater regarding thru bolt torque for jack plates. 75ft.#.

  4. #4
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    Is that jack plate to the hull or plate to engine Tq? Skater does a plywood trans too, right?

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  5. #5
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    Jack plate to hull. Yes Skater uses plywood with epoxy/glass over it and paint.

  6. Likes XstreamVking liked this post
  7. #6
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    Quote Originally Posted by XstreamVking View Post
    Plywood core, up to 50 ft. #'s Engine to jackplate 1/2'' bolts 90 lb#s Foam core trans: I am scared to go over 35 ft#'s. Tighten securely and use good nyloc's. Check every few trips for a while to look for any compression if it's a new trans. They don't need to be crazy tight. Just even and secure. Edit.....Use the fine thread bolts too if possible.
    me too lol. Thats the only concern I have with the Coosa is crushing it during this process. Still thinking of adding tubes of some kind
    Hydrostream dreamin

  8. #7
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    Most people that mount their engines don't use a tq wrench. They use a 8-10''long 3/8'' drive ratchet. Most are torqued far below what they think they are. 35#s on a 1/2'' drive 24'' long handle is a lot of clamping force. Make it as tight as you dare. Stop just before it cracks..Hahaha..

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  9. #8
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    I used stainless socket head cap screws with the thick stainless ARP washers on both the clamp-to-setback and setback-to-transom connections:

    https://www.allensfasteners.com/deta...roduct_ID=0180
    https://www.allensfasteners.com/deta...uct_ID=22247An

    Inside the boat- stainless fender washers then thick stainless washers, to spread the load:

    https://www.allensfasteners.com/deta...oduct_ID=20223
    https://www.allensfasteners.com/deta...uct_ID=9000012

    Stainless nylocks on all of them:
    https://www.allensfasteners.com/deta...oduct_ID=00089

  10. #9
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    That will look real nice.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  11. Thanks David - WI thanked for this post
  12. #10
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    Thanks for all the great information got the plate sealed and torqued last night!

  13. #11
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    Had the exact same question this morning for my Checkmate, glad this was right at the top.
    2019 Crestliner 240 Rally DX CWDH Tritoon Merc 200 DTS
    2014 Checkmate 2000 Pulsare BRX Merc 250 Pro XS

    Powerquest 290 Enticer FX Twin 454 Sold
    Hand Built 10ft Aluminum Jet Boat 1500cc Kawi 4stroke Sold
    Playcraft 24ft Tritoon conversion with 235 GT Johnson Sold

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