- Joined
- Feb 7, 2013
- Messages
- 2,496
The Isuzu engine(4FA1) in my tractor starts hard and as far as I can tell has low compression. Parts are seemingly hard to find.
I was able to find an overhaul kit from Alibaba so ordered one. The cylinder sleeves need to be bored to fit the pistons so it is
going to get interesting. Maybe the existing sleeves in the engine are usable but maybe not. It was my hope that I could just
pull the head and pan and install rings, bearings and rework the valves. If I need to utilize the sleeves, the engine will have
to be removed from the tractor so I can bore out the cylinders to fit the pistons. I would guess that one needs to bore the cylinders
while they are mounted in the block. So, anyhow in the meantime, it runs and plan to use it this spring and rip into it later in the year.
As long as I have this whole kit, my thinking is that it would be best to disassemble the thing down to the block and work on it that way.
I have time to think about a plan of action. It appears to me that if I want to use all the parts and do a first rate job, I need to
pull the engine. The project is somewhat complicated in that there is a loader installed on the tractor making splitting off the
front end more difficult. Now that I think about it, it might be best to pull the head, install new valves and guides and measure
on the bores. Then either do a top overhaul or rip into it if it is too far gone.
I was able to find an overhaul kit from Alibaba so ordered one. The cylinder sleeves need to be bored to fit the pistons so it is
going to get interesting. Maybe the existing sleeves in the engine are usable but maybe not. It was my hope that I could just
pull the head and pan and install rings, bearings and rework the valves. If I need to utilize the sleeves, the engine will have
to be removed from the tractor so I can bore out the cylinders to fit the pistons. I would guess that one needs to bore the cylinders
while they are mounted in the block. So, anyhow in the meantime, it runs and plan to use it this spring and rip into it later in the year.
As long as I have this whole kit, my thinking is that it would be best to disassemble the thing down to the block and work on it that way.
I have time to think about a plan of action. It appears to me that if I want to use all the parts and do a first rate job, I need to
pull the engine. The project is somewhat complicated in that there is a loader installed on the tractor making splitting off the
front end more difficult. Now that I think about it, it might be best to pull the head, install new valves and guides and measure
on the bores. Then either do a top overhaul or rip into it if it is too far gone.