MarineEngine.com - Your online store for all types of marine engines and boat parts.
PHONE ORDERS
Monday - Friday
9:00 AM - 5:00 PM EST
Click for TOLL-FREE Number
Online Checkout
Special $9.95 Flat Rate Shipping
(800) 209-9624 | Home | Contact | Shipping | Returns | Cart View your shopping cart.
Part Number Search
Shop by engine/drive part number.
Original & matching parts for sale.
Manuals & Accessories
Shop by description, item number
or manufacturer's model number.
Boat Repair Forum Boat Repair Forum   Boat Video Gallery Video Gallery
   
Results 1 to 5 of 5
  1. #1

    Default Johnson 6 HP head torque

    Hey Guys,

    I'm replacing the head gasket on a 1966 Johnson 5 HP LD-11C, what is the torque value for the head bolts, sequence, and what about any type of gasket sealer? Thanks for your help. Mike

  2. #2
    Join Date
    Oct 2011
    Location
    ft.worth,tx
    Posts
    24

    Default Re: Johnson 6 HP head torque

    mike,
    my manual says to use omc gasket sealing compound-my manual gives torque values by bolt diameter only-#6= 7-10 in.-lb,#8=15-22 in.lbs.#10=25-35 in.lbs.#12=35-40 in.lbs.1/4in.=5-7 ft.lbs,5/16=10-12 ft.lbs.,3/8=18-20ft.lbs.,7/16=28-30ft.lbs.-hope this helps

  3. #3

    Default Re: Johnson 6 HP head torque

    Thanks for the reply. These are quarter inch and I believe that 5 to 7 foot lbs sounds right.

    I made an error, this is a 1966 5 HP engine, LD-11C.

    There seems to be a debate regarding the old gaskets and the new gaskets. One says use gasket sealer and the other says not. I also read to never use the typical high temp copper-kote gasket sealer on aluminum.

    My new gasket has a copper a compression ring around each cylinder bore. Any other comments on gasket sealer, please post. Thanks Mike
    Last edited by mtnmike; 10-22-2011 at 01:21 PM. Reason: error in information

  4. #4
    Join Date
    Oct 2011
    Location
    ft.worth,tx
    Posts
    24

    Default Re: Johnson 6 HP head torque

    mike,
    i am new (some what) to outboards but i have made my living repairing auto engines-a copper compression ring is is a plus but it assumes both head & block are on a 90 degree plane-sometimes not true-i always use permatex aviation gasket sealer on any surface including aluminum and it's never failed or created a problem- it remains pliable and can be removed-never use a hardening type sealer it sets up like concrete,can crack and cause leaks

  5. #5

    Default Re: Johnson 6 HP head torque

    Thanks for the reply. I'm going to use a non hardening type of gasket sealer.

    I think this argument stems from there being two different eras involved. The engine was made in 1966 and many advances have been made in both gaskets and sealing material.

    I'm not a mechanic by trade, but rather by necessity. When the shop rates for both boats and autos reached the $75 to $100 per hour level, I brought my tools back out. I just finished rebuilding the twin carbs and putting a water pump on a 19.5' Bayliner with a Volvo I/O that i bought for resale.

    Thanks again for your input, now if you could just tell me what's wrong with a Geo Metro that I can't fix, I'd be all set. LOL

Similar Threads

  1. 1977 Johnson 70 hp head torque sequence
    By Brown bear 1 in forum Johnson Evinrude Outboard Forum
    Replies: 3
    Last Post: 07-04-2010, 05:13 PM
  2. 1954 Johnson 5.5hp cd-11 head bolt torque?
    By jcreekside in forum Johnson Evinrude Outboard Forum
    Replies: 2
    Last Post: 04-01-2010, 09:55 PM
  3. Johnson 15 hp head bolt torque
    By 4uterry in forum Johnson Evinrude Outboard Archive
    Replies: 1
    Last Post: 05-15-2008, 10:39 AM
  4. Torque on Johnson 6hp cylinder head bolts
    By Nickoloas Kosmenko in forum Johnson Evinrude Outboard Archive
    Replies: 0
    Last Post: 10-25-2006, 07:22 PM
  5. Need head torque specs for johnson 6 hp
    By p_man in forum Johnson Evinrude Outboard Archive
    Replies: 1
    Last Post: 10-02-2006, 05:16 PM

Posting Permissions

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