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33R877-0003-G1 cracked block

#1

K

kdrenshaw

I'm wondering if anyone here knows if there is a NON Briggs engine that will replace 33R877-0003-G1. I've just cracked the second engine block on this model. this is obviously a JUNK engine and I'm losing faith in the Briggs product line. I really don't want to put on another Briggs engine unless it is the only option that i have available. does anyone on here know why the engine blocks keep cracking? is there a way to stop it from happening?


#2

B

bertsmobile1

Photos ?
Cracked where ?
never had one come into my shop.
Something wrong with your equipment ?
What is it fitted on ?
How many hours ?


And yes any engine with the same shaft diameter and length can be fitted to whatever it is that continually cracks the briggs engines.


#3

R

Rivets

I also have never had one in the shop either.
Cracking in the same place?
How long did each one have in running time?
I’d say two engines, same problem, something else is going on?
Who installed second engine, new engine or short block?


#4

K

kdrenshaw

thanks for the replies.

first engine had around 150 hrs on it
second had about 50 hrs

it's on a craftsman yt3000 riding mower

no issues with the mower that i know of.

it did crack in the same place. right behind the throttle assy.

first engine has a large hole, about the size of a nickle (2-3cm)
second engine has a hair line crack and i can see oil shooting out of when the engine runs.

left and center pictures are from the original engine. large hole.
right picture is of the current engine. small hairline crack.


not an easy picture to take since it is behind the throttle assy.

also, i installed the second engine.

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#5

I

ILENGINE

Be interesting to see the inside of that engine to see what could be coming apart inside. I suspect something to do with the counterbalance system, but what is causing the failure that would push the counterweight system through the block. Everything else inside the engine, if it broke would shut the engine down permanently.

What does the area that you mow look like. Got hills, and you are side sloping, mowing up and down, or is it just flat ground.


#6

K

kdrenshaw

ILENGINE said:
Be interesting to see the inside of that engine to see what could be coming apart inside. I suspect something to do with the counterbalance system, but what is causing the failure that would push the counterweight system through the block. Everything else inside the engine, if it broke would shut the engine down permanently.

What does the area that you mow look like. Got hills, and you are side sloping, mowing up and down, or is it just flat ground.
Click to expand...

My yard has a gentle slope and i mow in a square pattern and across the slope switching from one to the other every other week. i don't do up and down the slope.

the first engine with the hole in the block, shut down immediately when the hole was formed.

the current engine with the crack, still runs. it is hard to start, but runs super fast engine speeds and shoot out oil. I've stopped running it as of this moment in time.

i too am curious as to what the inside looks like. just not sure how to remove the broken area. if it's easy, i'll pull it apart and take better pictures.


#7

Boudreaux In Eunice La.

Boudreaux In Eunice La.

If it's running too fast you have solved your issue.... RPM's were too high and you got some stress cracks....... Something will turn loose soon if you can't get the RPM's set right...

Could be the governor not set right ETC ETC...............

Let us know Mon Ami ~!~!


#8

K

kdrenshaw

Boudreaux In Eunice La. said:
If it's running too fast you have solved your issue.... RPM's were too high and you got some stress cracks....... Something will turn loose soon if you can't get the RPM's set right...

Could be the governor not set right ETC ETC...............

Let us know Mon Ami ~!~!
Click to expand...

It started running super fast after the crack formed. everything was running well before. this is the second engine this happened to. first one was original with the tractor. second one was purchased and installed by me. worked well for about 1.5 seasons.


#9

Boudreaux In Eunice La.

Boudreaux In Eunice La.

Look on that throttle assembly and see if that fatter spring is hooked up on both sides........


#10

R

Rivets

I don’t know what you call a gentle slope or how large an area this slope is, but that may be your problem. By mowing constantly at the same angle may be causing oil starvation on internal parts. You say you mow across the slope one week in one direction and switch to go the other direction the next week. If your slope is over 15 degrees, you are asking for some serious problems, because your lubrication system is not designed to work for long periods at those angles.


#11

Boudreaux In Eunice La.

Boudreaux In Eunice La.

Rivets is correct....... That's why commercial guys rather a Horizontal engine on their mowers........


#12

I

ILENGINE

Wouldn't take much of an angle with the discharge blowing grass down the slope, because the oil slinger in on the same side as the broken block, crack.. I am suspecting oil starvation myself.


#13

B

bertsmobile1

ILENGINE said:
Wouldn't take much of an angle with the discharge blowing grass down the slope, because the oil slinger in on the same side as the broken block, crack.. I am suspecting oil starvation myself.
Click to expand...

I killed 2 engines mowing across a slope.
The landlord has an orchard & we mow between the rows of trees with a real tractor and then around then with ride ons.
Driving around 10' circles 14' apart was enough to kill 2 engines in my mowers and 1 in his.
Solution was as previously mentioned and get a mower with a horizontal crank.
In his case some old 2000 series Cubs & I use a 24" 2 stroke walk behind to do the fine finishing around the mulch & irrigation pipes .

Pull the engine out , flip it over and pull the sump off.
The oil level is 1/4" below the joint.
I keep one here which I fill with water, stretch some cling wrap over the top then tip it far enough to starve the oil pump / slinger to show my customers just how slope sensitive these engines are, and the bigger the engine, the more sensitive they are .


#14

K

kdrenshaw

bertsmobile1 said:
I killed 2 engines mowing across a slope.
The landlord has an orchard & we mow between the rows of trees with a real tractor and then around then with ride ons.
Driving around 10' circles 14' apart was enough to kill 2 engines in my mowers and 1 in his.
Solution was as previously mentioned and get a mower with a horizontal crank.
In his case some old 2000 series Cubs & I use a 24" 2 stroke walk behind to do the fine finishing around the mulch & irrigation pipes .

Pull the engine out , flip it over and pull the sump off.
The oil level is 1/4" below the joint.
I keep one here which I fill with water, stretch some cling wrap over the top then tip it far enough to starve the oil pump / slinger to show my customers just how slope sensitive these engines are, and the bigger the engine, the more sensitive they are .
Click to expand...

Thanks All. I need to measure my slope of my yard. it is about an acre but i can't imagine that it's 15 degrees, but i can't say for certain. i will measure tonight and update.


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