fran...k.
Husqvarna
AA Class
I was taking some pictures the other day and maybe someone could add something to some of my queries. Even if no one can add much it most likely will be informative to some.
so here we have left to right
420 auto which I have been lead to believe is also an air cooled 430
430 water pumper mahle
cagiva replacement piston
not sure perhaps seizeco
Also you will see the original and the cagiva replacement wristpin bearing, not as much different as I thought.
Here we have them base to base the two mahle or stock ones on top have the same transfer port cut out. As you can see the seizeco has a gap much larger and the cagiva one slightly smaller. You can also see the three wristpins the short, too short waterpumper one the 420 auto one and the new cagiva one in the wrapper.
Here I am showing that the cagiva piston seems designed for the air cooled 430 cylinder and the gap in the mahle pistons lines up with the water cooled cylinder which might be a 500 but the cut out is the same I got somewhat confused. I got the cagiva piston and had a water cooled cylinder bored for it but noticed the issue of blocking off part of this transfer area. I am not showing how these skirts and the lands between the holes in the cylinder work out but the seizco one obviously will miss some land to rub on/slide by.
Here is the packing reverse side and the cagiva piston.
Maybe someone can help me out here.
Any idea what entity made the cagiva piston or the one I am calling the cagiva piston? It is a very nice piston, my boring guy was impressed with it, the wristpin isn't super short but it doesn't fit in the water cooled cylinder well if you want maximum transfer.
Can someone take one of those Woosner or what other brand names they are marketed under in other parts of the world and put them up against any of these options for a comparison?
Is the seizco the brand I think it is?
Fran
so here we have left to right
420 auto which I have been lead to believe is also an air cooled 430
430 water pumper mahle
cagiva replacement piston
not sure perhaps seizeco
Also you will see the original and the cagiva replacement wristpin bearing, not as much different as I thought.
Here we have them base to base the two mahle or stock ones on top have the same transfer port cut out. As you can see the seizeco has a gap much larger and the cagiva one slightly smaller. You can also see the three wristpins the short, too short waterpumper one the 420 auto one and the new cagiva one in the wrapper.
Here I am showing that the cagiva piston seems designed for the air cooled 430 cylinder and the gap in the mahle pistons lines up with the water cooled cylinder which might be a 500 but the cut out is the same I got somewhat confused. I got the cagiva piston and had a water cooled cylinder bored for it but noticed the issue of blocking off part of this transfer area. I am not showing how these skirts and the lands between the holes in the cylinder work out but the seizco one obviously will miss some land to rub on/slide by.
Here is the packing reverse side and the cagiva piston.
Maybe someone can help me out here.
Any idea what entity made the cagiva piston or the one I am calling the cagiva piston? It is a very nice piston, my boring guy was impressed with it, the wristpin isn't super short but it doesn't fit in the water cooled cylinder well if you want maximum transfer.
Can someone take one of those Woosner or what other brand names they are marketed under in other parts of the world and put them up against any of these options for a comparison?
Is the seizco the brand I think it is?
Fran