08-20-2012, 04:57 PM
Hi
Lads
Started boring the cylinder
Mounted on the lathe saddle
Body filler is used to plug the end and the centre marked
It is mounted on the face that it will sit on
This should keep the bore paralell with the base
The bottom of the cylinder is held against the face plate this should keep the bore and the botton face in line (note use of tab papers) as a "slip guage)
After a few cuts it was obvious that something was wrong
Sand inclusion in the casting (core sand)
I may as well keep going
Cleaned up at just under 2 1/4 inch
Should be ok with one more fine cut when it cools off
I was aming for a bore of 1 7/8 the same as my marine engine
2 1/4 will give it a bit more power
John
Lads
Started boring the cylinder
Mounted on the lathe saddle
Body filler is used to plug the end and the centre marked
It is mounted on the face that it will sit on
This should keep the bore paralell with the base
The bottom of the cylinder is held against the face plate this should keep the bore and the botton face in line (note use of tab papers) as a "slip guage)
After a few cuts it was obvious that something was wrong
Sand inclusion in the casting (core sand)
I may as well keep going
Cleaned up at just under 2 1/4 inch
Should be ok with one more fine cut when it cools off
I was aming for a bore of 1 7/8 the same as my marine engine
2 1/4 will give it a bit more power
John