Follow us on...
Follow us on Twitter Follow us on Facebook Watch us on YouTube
Register

User Tag List

Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. #1
    Member
    Join Date
    May 2011
    Location
    new jersey
    Posts
    35
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    honing tecumseh aluminum block

    hi im new here just trying to find out if its possible to hone an aluminum bore tecumseh. or is it better to sleeve it . i have the means to do it either way but my friend who's a automotive rebuilder says you cant hone aluminum bores they will wear out prematurely. but the lawn mower guy down the street says it should work. if i take these engines down this far i want the most longevity i can get, any help would be appreciated thanx scott.

  2. #2
    Jeff Clark's Avatar
    Join Date
    Mar 2011
    Location
    Woods Cross, Utah
    Posts
    2,611
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Hone away its only been done for 50 years on them

  3. #3
    Senior Member oldfatguy's Avatar
    Join Date
    Jul 2009
    Location
    North Jersey
    Posts
    2,502
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    just go easy, you just want to brake the glaze on the cylinder wall so that the ring will seat. I read that most of the problems come from not cleaning the bore real good after honing. If you leave any grit in there it will act like sand paper on the piston. wash it out with soap and water and plenty of paper towels to get all the grit from the hone out.

  4. #4
    KustomKartKid's Avatar
    Join Date
    Jul 2010
    Location
    Central New Jersey
    Posts
    16,442
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    1
    Quote Originally Posted by Jeff Clark View Post
    Hone away its only been done for 50 years on them
    ....so Jeff there is no issue with re-establishing the silicone layer at the top of the honed surface ....like with the old nickasil (sp?) coated cylinders.
    I know Sunnen developed a honing process that replaced the old chemical etching process but it's been a while since I messed with that stuff.

    I'm guessing the answer is "it's a friggin lawn mower engine just do it "!!!

  5. #5
    Jeff Clark's Avatar
    Join Date
    Mar 2011
    Location
    Woods Cross, Utah
    Posts
    2,611
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Nikasil coated cylinders are more delicate than the iron bores typically used with Flex-Hones. Nikasil is an electroplated oleophilic nickel matrix silicon carbide coating that allows the use of aluminum cylinder walls without a steel sleeve. This coating reduces friction and wear. Great advantages come with the use of Nikasil on coated aluminum blocks or jugs, one of them is the increased heat removal from the piston, pin and ring assemblies. The other advantage is the tighter tolerances can be achieved. Most Nikasil coatings are 0.0003" to 0.0008". To deglaze and freshen up the bore walls you must use an aluminum oxide material based hone. This softer material works well with the hard walls. Use the hone like described above with the exception of much less rotations. Run the hone for 10-12 rotations in the bore and inspect. If the overall cylinder looks touched then you are done and remove the tool.

  6. #6
    Senior Member
    Join Date
    Jul 2009
    Location
    Southeastern PA
    Posts
    4,526
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    I've honed a bunch of Tec's and never had a problem.

  7. #7
    Member
    Join Date
    May 2011
    Location
    new jersey
    Posts
    35
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    thanks for all replys.

  8. #8
    KustomKartKid's Avatar
    Join Date
    Jul 2010
    Location
    Central New Jersey
    Posts
    16,442
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    1
    Quote Originally Posted by C9H13NO3 View Post
    I've honed a bunch of Tec's and never had a problem.

    that's because you're special

    .....welcome back Nate!

  9. #9
    Senior Member zeeman's Avatar
    Join Date
    Nov 2010
    Location
    north of Atlanta
    Posts
    2,280
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Hey guys. Seems like getting the hone in the bore just right would be critical. Is my drill press sufficient for this task? Any recommendations on what hone to get? I had a local Tecumseh tec. look at my cylinder, and he said it was OK. It does not look OK to me though. Thanks.

  10. #10
    Jeff Clark's Avatar
    Join Date
    Mar 2011
    Location
    Woods Cross, Utah
    Posts
    2,611
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    aluminum oxide hone, if your means are limited use a ball type.

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. Free H-block Tecumseh for Parts
    By MarksA-C in forum Mini Bike Parts
    Replies: 2
    Last Post: 02-21-2011, 06:16 PM
  2. Tecumseh H-Block Charging Coil
    By MarksA-C in forum WANTED
    Replies: 2
    Last Post: 12-19-2010, 06:58 PM
  3. Big Block Tecumseh noise
    By DrewDay in forum Tecumseh
    Replies: 3
    Last Post: 07-11-2010, 09:26 PM
  4. tecumseh short block
    By oldschool71 in forum Tecumseh
    Replies: 7
    Last Post: 04-07-2010, 07:32 PM
  5. Tecumseh HS40 Block And Cam Needed
    By Ruppster81 in forum WANTED
    Replies: 0
    Last Post: 06-23-2007, 09:36 PM

Tags for this Thread

Posting Permissions

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