- Jul 2, 2007
- Reaction score
- North East USA
Well not all pistons have arrows on them and not all cylinders care which way the piston goes. The piston arrow is nothing more than a easy way to make sure people don't screw something up on the ones that do matter.
People build saws all the time with the pistons flipped around sometimes on purpose when porting sometimes cause they don't know what there doing. What matters is the location of the locator pins and on this model the pins are just outside of the piston skirt so you are no more likely to catch the ring pointing it either direction on a stock 026.
Now below are pictures of the pins on the piston and the cylinder port locations so you can see that it doesn't make any difference which way to flip it on a non-port one. I also added dots in the cylinder to where they approximately are as the intake port width is alot smaller then the skirt width.
View attachment 1079654
View attachment 1079655
So you are a fan of cheap chi-com pistons. Post above stated Meteor, they all have arrows.
Another reason for the arrows, is pistons have a thrust side due to rotation direction.
You ever build a V8 SBC/BBC? They have an orientation for the pistons also.
Not all pistons have arrows on them???
I would not be using those pistons. Pistons are not round. The rings are also oriented so as not to hang in ports.
But hey, what do manufacturers know.
Some people probably put on their pants/underwear on, back wards too......."it don't matter".......