Re: 901 swaps

Posted by James2 on January 14, 2005 at 19:23:37 from (207.179.239.76):

In Reply to: Re: 901 swaps posted by paul on January 14, 2005 at 07:41:25:

Paul:
My father purchased a Ford 961 in the fall of 1958 which had a 4 cyl diesel. The engine failed within two years. Ford repaired the engine and installed internal balancers. We did not have any problems after that. An inline four cylinder is inherently more unbalanced than an inline three cylinder. I'm assuming that the crankshaft rod "throws" are not offset. The only good way to fix this is to add a crankshaft balancer. These are commonly two half shafts, running along the crankshaft operating one-half engine speed. If space is a limitation, the balancer can be concentrated (narrow) one-half weights/gears also operating at one half engine speed. But this introduces other moments which can result in other dynamic problems. A lot of OEM's will add more mass to the lower components (if needed for life), then try to use a flexible/dampening mounting system, In my opinion this is really only a band-aid and at best will only be marginally satisfactory, never really good. But none-the-less, I have seen a lot of "marginally satisfactory", highly cost effective arrangements during my tenure. The balancers add rotating mass so they do have a slight negative effect on acceleration, but it generally would still be light years better than a two cyl Deere. OEM's generally deal with three cylinder engine "shake" by optimizing the mounting arrangement which is theoretically more easily acomplished than on an unbalanced four cylinder. However, I have seen several production machines with "rocking and rolling" three cylinders. Bottom line is that I have seen/worked with 3 and 4 cylinder engines, balanced and unbalanced, and would rather have a balanced 4 cylinder rather than a 3 cyl. However, both take a back seat to the old tried and true inline 6 cyl.

Follow Ups:

• adding engine balancer to 4 cylinder 172 diesel?? timberjack 11:01:53 06/22/05 (0)

Post a Followup Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]