I bought a 93 Toro T bar walk behind. It is a nice big mower.
I knew when I tested it that is needed a valve job.
I ordered new valves, all parts, springs, retainers. I used Chevy 350 lifters, as I have heard on many forums this is acceptable.
I tore the entire engine down to clean and inspect it. I found the crank to be smooth and used plastigage and got a 5 thousands reading.
The cylinder looked exceptional, you could see the factory crosshatching. I did run a fine hone to just to possibly break glaze.
I was very very careful, replacing seals, cleaning. Things look good.
I spent a ton of time making sure that I matched the marks on both the camshaft and balancer.
I am sure I nailed this. Checked it three time (however I am human).
My particular motor does not have the adjustable type of lifter mechanism.
As it stands, the motor is a little hard to start, but runs PERFECT at 1200 rpm idle, as smooth as any motor I have ever heard.
In fact I can work all the mower functions and gears. It is very strong.
I can rev it up to maybe 2200. Right at the same rpm every darn time it starts spitting out of the carb and almost dies unless I set it to idle.
It sounds excellent at 2000.
I keep thinking that I need a way to adjust the lash. The other thing might be the Chevy lifters pumping up too hard.
Right now I am just frustrated.
Oh, I did rebuild the carb, as well.
I find it strange that it is a the same rpm range every time. Seems like right at the point where the valve floats or no longer seats.
I am sure it is something silly.
I am using 10-30 quaker state synthetic.
I would appreciated any advice.
I knew when I tested it that is needed a valve job.
I ordered new valves, all parts, springs, retainers. I used Chevy 350 lifters, as I have heard on many forums this is acceptable.
I tore the entire engine down to clean and inspect it. I found the crank to be smooth and used plastigage and got a 5 thousands reading.
The cylinder looked exceptional, you could see the factory crosshatching. I did run a fine hone to just to possibly break glaze.
I was very very careful, replacing seals, cleaning. Things look good.
I spent a ton of time making sure that I matched the marks on both the camshaft and balancer.
I am sure I nailed this. Checked it three time (however I am human).
My particular motor does not have the adjustable type of lifter mechanism.
As it stands, the motor is a little hard to start, but runs PERFECT at 1200 rpm idle, as smooth as any motor I have ever heard.
In fact I can work all the mower functions and gears. It is very strong.
I can rev it up to maybe 2200. Right at the same rpm every darn time it starts spitting out of the carb and almost dies unless I set it to idle.
It sounds excellent at 2000.
I keep thinking that I need a way to adjust the lash. The other thing might be the Chevy lifters pumping up too hard.
Right now I am just frustrated.
Oh, I did rebuild the carb, as well.
I find it strange that it is a the same rpm range every time. Seems like right at the point where the valve floats or no longer seats.
I am sure it is something silly.
I am using 10-30 quaker state synthetic.
I would appreciated any advice.