Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Briggs 5Hp Seized


  • Please log in to reply
8 replies to this topic

#1 1978murray OFFLINE  

1978murray

    diesel mechanic

  • Senior Member
  • Member No: 2523
  • 598 Thanks
  • 1,163 posts
  • Location: harrison city, PA

Posted May 23, 2013 - 12:48 PM

i have been working on a modified 5hp briggs for a guy, well anyway it has a shaved head, cut eyebrows, ported and polished intake and exhaust, and new carb jets. i got it 90% together and decided to test it out. dumped gas into carb and it fired, i did this couple times just for the heck of it, it never over revved or made a funny noise. but i went to pull it again to do another run and it just froze.  u cant turn the motor at all.  took plug out thinking i hydolocked it, still seized. took head off everything looks fine exhaust valve is open and all but motor will not turn. any ideas



#2 John@Reliable OFFLINE  

John@Reliable

    Procrastinators unite tomorrow

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 36
  • 1,295 Thanks
  • 1,416 posts
  • Location: Boston- Cape Cod MA

Posted May 23, 2013 - 12:52 PM

Missing any tools >> only kidding :D

 

I wouldn't play with it anymore, time to start breaking it down to see whats going on for sure.



#3 8tyman8 OFFLINE  

8tyman8

    Member

  • Senior Member
  • GTt Junior
  • Member No: 5455
  • 414 Thanks
  • 731 posts
  • Location: kingston ont canada

Posted May 23, 2013 - 12:58 PM

What was the tolerance on the piston and bore ??? the pistons are undersize so when they warm up they will be right in the bore is you have a over size piston it can heat up and get wedged in the bore .. Did you put oil in it ?? I have seen that done before ..



#4 brahlf OFFLINE  

brahlf
  • Member
  • Member No: 9019
  • 11 Thanks
  • 24 posts

Posted May 23, 2013 - 01:10 PM

One of two things.

Piston is stuck in bore, too big. Or ran without oil and seized the rod to the crank.

#5 HDWildBill OFFLINE  

HDWildBill

    Freedom is not Free. Thank those in uniform for your freedom.

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 6354
  • 8,710 Thanks
  • 8,563 posts
  • Location: Ga

Posted May 23, 2013 - 03:36 PM

One of two things.

Piston is stuck in bore, too big. Or ran without oil and seized the rod to the crank.

 

That's what I was thinking no oil.



#6 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,486 Thanks
  • 39,722 posts
  • Location: Collinsville, Oklahoma

Posted May 23, 2013 - 03:41 PM

No oil or too tight tolerances!



#7 1978murray OFFLINE  

1978murray

    diesel mechanic

  • Senior Member
  • Member No: 2523
  • 598 Thanks
  • 1,163 posts
  • Location: harrison city, PA

Posted May 23, 2013 - 04:23 PM

nope brand new oil, and yes its the right amount. also it has stock piston and rings.



#8 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,486 Thanks
  • 39,722 posts
  • Location: Collinsville, Oklahoma

Posted May 23, 2013 - 04:46 PM

Any possibility the rod is 180 out?



#9 MH81 ONLINE  

MH81

    Proud to be Deplorable

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 27,316 Thanks
  • 28,634 posts
  • Location: N. W. PA

Posted May 23, 2013 - 10:23 PM

Are the rings new?




Top