Briggs and Stratton horse power question


  #1  
Old 08-06-15, 06:56 PM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
Briggs and Stratton horse power question

I have a 126T02 Briggs engine. Its rated as a 6.75 hp

Also I have a 125K02 thats a 6.5 hp

The same numbers for pistons and carbs come in my manuals. What makes the difference ? RPMS ?
 
  #2  
Old 08-06-15, 08:46 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,996
Received 106 Likes on 96 Posts
Probably the label adds another 1/4 horsepower.
 
  #3  
Old 08-09-15, 06:49 PM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
Different crank and block number. Maybe a longer stroke ?
 
  #4  
Old 08-09-15, 06:53 PM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
Lol they could make money like that.
 
  #5  
Old 08-09-15, 07:53 PM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
I wanted to put LOL after RPMS !!
 
  #6  
Old 08-09-15, 11:17 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,996
Received 106 Likes on 96 Posts
There is no notable difference between many of these different rated engines. It's marketing for the most part. I wasn't really kidding about the only difference being the label. Same stroke, same compression ratio, same everything. RPM could be different, that's a possibility, but that would be about the only difference.
 
  #7  
Old 08-10-15, 03:32 AM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
My main reason for asking is that I want to take a crank from a 6.5 and put in a 6.75 block, but the blocks are different #s in the manuals.
 
  #8  
Old 08-10-15, 09:20 AM
G
Member
Join Date: Jun 2006
Location: United States
Posts: 2,549
Likes: 0
Received 23 Likes on 22 Posts
Go to the Briggs site and check the part numbers for the cranks. Have a good one. Geo
 
  #9  
Old 08-10-15, 11:18 AM
B
Member
Thread Starter
Join Date: Aug 2015
Location: USA
Posts: 242
Likes: 0
Received 0 Likes on 0 Posts
I looked them up last week crank #s are different on a 6.5 and a 6.75. I am wandering why.

Except for the fact that the ends of the cranks might be different for attaching certain pulleys or blade flanges.
 
  #10  
Old 08-10-15, 11:46 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,996
Received 106 Likes on 96 Posts
If the block numbers are different, then I would say that there's a chance the crank won't interchange, but I don't know. Briggs made several engines with the same parts inside and different hp ratings, but I don't know of anything that tells which ones are the same and which ones are different without looking at individual part numbers of each. If the part numbers are the same, it's a safe bet that parts will interchange. If the numbers are different, it's a gamble.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: