Finally - 720 engine swap-more pictures 12/12/15

Nice!

You will like the 23HP Briggs.  I put the same engine in my 720 about 2 years ago.  It has plenty of power and starts very easily.  It looks like a Small Engine Warehouse kit you are using.  That is what I used also.  It went in pretty easy.  It is a very tight fit though.

Is that a 616 frame? (I understand only major difference is the CCKA vs the CCBK). Just never seen a 720 with the solid brake petals.

With gasoline prices being what they are the B&S conversion will yield surprising operational savings too. We don't own any of that series A-C but have 4 Case/Ingersoll's with 16-20HP Onans and wow do they suck down the fuel as compared to more modern designs!!


Edited by Butch(OH) - 11 Dec 2015 at 6:12am

Boy, that is a neat installation!  I'm sure it will be much more fuel efficient.

That is a sweet installation fir' sure! I guess that mounting plate raises the engine up to meet the driveshaft. Pretty slick! Exhaust comes out right where it should be.

you are going to just love that engine every thing about it is better    what muffler did you use ? did you  make  that heat shield ?  might consider bending up a few extras

Looks great!  Have you experienced any problems with engine/exhaust heat from the new engine on the battery?  I had lots of problems with this on my Simplicity 4040 (OEM engine) until I discovered the battery heat shield was missing (I got the tractor when it was less than a year old).  Installing a shop-built heat shield solved the problem for me, but it took me a few batteries to figure out I had to do something.

No, I have not really put to any test. Hope to in the next couple of weeks.
The reason I went with the Briggs and not the Honda is because the guys that sold it to me in kit form said that they (their customers) were not having good luck with warranty work on the Honda's but no problem on the Briggs.   Den

Yes it is easier to bolt the engine down but on the last
Onan that we put in, we welded a rod across the top
of the bolts (the one on the front right needed a bend
down as it would not hit the main casting) that went
up against the engine casting so we did not have to
get a holding wrench on it.  We put the 3 bolts in the
engine holes before lowering into tractor.  We guided it
in so the bolts dropped into the mounting holes.  Then
it was just a matter of installing the nuts and washers.
Did it totally from the bottom.  The worst it would be
is someone on top with a rod to hold the bolts down
until the nuts were installed but on this first effort,
did not even need that. By the way, in case someone
was wondering, the fourth mounting bolts goes into
a tapped hole on the engine base.
Den

I have not noticed any effect of heat on the battery but most of my mowing, whatever, does not last very long.  I have looked in the parts book and they do show a heat shield over the battery but in the 10 or 11 720s, 620s, 616s,and simplicity models I have had anything to do with...there has never been a battery heat shield on any of them.  I have be looking to devise some type of heat shield that would be fairly universal.  The problem being that the original battery hookup was side mount and most of them now are poles on top so a shield cannot be laid or however on top of the battery.
Den

Den you're going to be shocked at how little gas this thing uses. More or less the same engine I have in mine and I can mow close to 15A between fill ups. You will have to adjust the valves a little more often, but it's no problem. You've got a nice piece of equipment there. Leon R  Cmo