6 Horsepower - General DIY Discussions - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > DIY Forum > General DIY Discussions


Thread Tools Display Modes
Old 05-29-2008, 06:20 PM   #1
Join Date: Mar 2006
Posts: 2,083
Rewards Points: 1,000

6 horsepower

Have an older tecumseh 6 horsepower riding lawn mower engine that has reached its last legs. Will a briggs 6.75 horsepower engine work for a replacement?

Would they both have the same torque?


redline is offline   Reply With Quote
Old 05-31-2008, 04:20 PM   #2
Idiot Emeritus
Join Date: Mar 2008
Location: Fernley, Nevada (near Reno)
Posts: 1,849
Rewards Points: 1,492

Whenever I replace a gas engine with a non-stock one here's what I look at.

1) Will it fit? If the mounting bolts don't line up, can the machine it mounts to be drilled, or can an adapter plate be made? How about overall dimensions and operating controls? Shaft diameter, position relative to mounting bolts, height, etc. If it's belt drive, alot of this can be adjusted.

2) HP needs to be the same or more, and RPM must match closely. Almost all gas engines are standard rotation, so it'll likely turn the right way.

3) If it's pull-start, make sure you'll have easy access to the starter rope handle.

4) Oil fill and drain; occasionally, you'll need to add a short length of pipe to the oil drain, or changing oil will be a big mess. Remember to do this before you add oil. Depending on obstructions, gas tank fill location must be considered as well.

If all of the above are OK or can be modified, you'll be fine.


P.S. Torque is a function of HP vs. RPM. For example, 1HP at 1800 RPM=3 ft.lbs. of torque; 1HP at 3600 RPM= 1.5 ft.lbs. of torque. HP is the ability to do work; 1HP is the ability to lift 33,000 lbs. 1 foot in 1 minute. Torque is how hard a shaft is turned. You can't have HP when a machine is not moving, you can have torque whether it's moving or not.



micromind is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1