Register free!

The Green Industry's Resource Center


Reply
 
Thread Tools   Display Modes
  #1  
Old 10-25-2001, 12:12 AM
EJK2352's Avatar
EJK2352 EJK2352 is offline
LawnSite Bronze Member
 
Join Date: Jun 2001
Location: Salem, Ohio
Posts: 1,149
Leaf vac engine swap

I have a leaf loader w/ an 11 hp. engine. I found a replacement engine but the crankshaft is 3/8" longer than the original engine.
Has anybody ever cut down a crank to make an engine fit. If so how did you cut it?? A friend said to just fire up the engine and hold a hacksaw on the crank where it needs cut. ED
Reply With Quote
  #2  
Old 10-25-2001, 12:29 AM
Robert Doubrava's Avatar
Robert Doubrava Robert Doubrava is offline
LawnSite Senior Member
 
Join Date: Aug 2001
Location: Beeville, Texas
Posts: 342
im sure a cuttin' torch wont work well. it may be messy. id buy a different engine that has the same crankshaft length, instead of cutting the crank shaft to make it fit. what kind of engine is on it?
__________________
My truck:

1970 Chevrolet C20

My equipment:

1984 22" Yazoo BigWheel 5hp B&S I/C
1993 38" Craftsman rider 12.5hp B&S I/C
2004 Craftsman 17" gas weed-wacker
2004 Craftsman gas blower
1982 Trim-All edger 2hp B&S
1990's Stihl 009L, 14" bar
1964 McCulloch 250, 20" bar
Reply With Quote
  #3  
Old 10-25-2001, 07:05 AM
Richard Martin's Avatar
Richard Martin Richard Martin is online now
LawnSite Fanatic
 
Join Date: Mar 2000
Location: Greenville, NC
Posts: 14,551
EJK2352 wrote:
............................
Has anybody ever cut down a crank to make an engine fit. If so how did you cut it?? A friend said to just fire up the engine and hold a hacksaw on the crank where it needs cut.
............................

I just used a cut-off disk in my hand grinder the last time I did it.

Any good machine shop should be able to do this if you remove the crank first.
__________________
Serving Greenville, Winterville and Ayden NC



Reply With Quote
  #4  
Old 10-25-2001, 08:56 AM
justractors justractors is offline
LawnSite Member
 
Join Date: Sep 2001
Location: Frozen North, Michigan
Posts: 39
Not rocket science

The two considerations here are pretty basic.
One do not overheat it while cutting. Use a hacksaw and a pocket full of patience. No cutting torches and if you use a grinding disc be slow at it.
Two bevel the end of the crank when you are finished to make pulley installation easier.
You may also have to drill and tap the end of the crank to retain the pulley. If so drill a smaller hole (1/4") prior to cutting off the crank. This will make easier to center since most cranks have a center mark from when they were originally turned.
Take your time and be precise but it is not hard to do and the results will be more than adequate.
Bill
Reply With Quote
  #5  
Old 10-25-2001, 09:32 AM
captdevo's Avatar
captdevo captdevo is offline
LawnSite Senior Member
 
Join Date: Nov 2000
Location: Chiefland, FL.
Posts: 932
Are you sure you even have to cut it?

3/8" isn't much , you should be able to adjust the engine mount enough to take up some of that.

I wouldn't cut on a new crank...
Reply With Quote
  #6  
Old 10-26-2001, 01:07 AM
khouse khouse is offline
LawnSite Bronze Member
 
Join Date: Feb 2001
Location: lee's summit, mo
Posts: 1,479
I have cut one crank off about 1 inch by using a Sawzall very slowly. Then I ran the engine at idle and cleaned it up with my hand held grinder. Then I finished off with a bastard file. ( This is the last resort!). If it's a vertical engine can't you just add some washers between the engine and mount? If it's a horizontal engine can you drill out the mounting holes large enough to slide the engine back 3/8 inch?
Reply With Quote
  #7  
Old 10-28-2001, 10:57 PM
EJK2352's Avatar
EJK2352 EJK2352 is offline
LawnSite Bronze Member
 
Join Date: Jun 2001
Location: Salem, Ohio
Posts: 1,149
Thanks for the replies. I took the old engine off and mounted the new one up. I ended up not having to cut the crank, there was enough clearance inside the housing with the extra 3/8" crank length. The old engine was a Briggs 11 I/C and the replacement is a 13 hp. Kohler Command. I used it for the first time today and that Kohler sure has alot more power than the Briggs did. I got a great deal on the engine too. I bought it from Ray Padgetts Small Engine Warehouse for $550 w/ electric start.
Reply With Quote
Reply

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

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 04:20 AM.

Page generated in 0.08703 seconds with 9 queries