Nebr_Rex
Coast to Coast
z just the balance 'factor' is changed.
The weight I removed was on the throw side,not the counterwieght side.
2) 400 = 64* 62 ,use a KZ650 Wiseco piston @ 65mm,3 over stock 62mm
440 = 67.5 * 62,use the KZ750 Wiseco piston @ 69mm,3 over stock 66mm
((Edit/When using either Wiseco pistons you can milled the head other .035 in.
because those pistons have a shorter dome
This will be a total of .070 in. off the head.
Bringing the compression ratio up to roughly 10.3 with each combination.
Milling just the original .035 will result in a 9.3 ratio.
The valve pockets are 5 degrees off which might cause a problem with a milled
head and high lift cam.))
The drop in pistons I have are from a discontinued Wiseco kit from eBay.
It is a drop in for the 440.
If I were you I'd do a compression check etc. first, to see what condition the engine is in.
Then if it's good leave it alone and find another to hop up.
Because there is nothing worse than walking by a motorcycle you could be riding. 8)
The weight I removed was on the throw side,not the counterwieght side.
2) 400 = 64* 62 ,use a KZ650 Wiseco piston @ 65mm,3 over stock 62mm
440 = 67.5 * 62,use the KZ750 Wiseco piston @ 69mm,3 over stock 66mm
((Edit/When using either Wiseco pistons you can milled the head other .035 in.
because those pistons have a shorter dome
This will be a total of .070 in. off the head.
Bringing the compression ratio up to roughly 10.3 with each combination.
Milling just the original .035 will result in a 9.3 ratio.
The valve pockets are 5 degrees off which might cause a problem with a milled
head and high lift cam.))
The drop in pistons I have are from a discontinued Wiseco kit from eBay.
It is a drop in for the 440.
If I were you I'd do a compression check etc. first, to see what condition the engine is in.
Then if it's good leave it alone and find another to hop up.
Because there is nothing worse than walking by a motorcycle you could be riding. 8)