My piston shattered, suprisingly the cylinder looks perfectly fine. Can I put a standard piston in? I know Im being cheap but I dont have the money for cylinder work. What do u guys think?
Shattered piston
- Thread starter lazar40
- Start date
What have you done about the parts that's gone in the bottom end?(if they have). But get the cylinder checked by a shop before ordering a piston
your piston shattered for a reason. I would think that you have excessive piston to cylinder clearance. "Piston slap"....... this means that you need to have your cylinder properly measured at a shop and then buy the appropriate piston based on those measurements. then have them bore it to the piston. make sure they hone it and champfer the ports when they bore it.
You should go 1 piston size up from where you are now and bring the new piston(with rings) and jug to a machine shop. They will take care of piston clearance from there.
to make sure, he should have it measured before orderin. that way there is no question if it is right.
The piston shattered because the bore to piston clearance is out of specification. The piston has probably been in the quad since Mosses parted the Red Sea. Measure the bore and you might get lucky.
Im gonna get it my cylinder bored, and they said they can bore it up to 2mm does that sound good and will it give my blaster more power? Their price is 169 and it comes with namura piston and all the stuff.
I wouldn't get it bored over more than what neccisary. OVERBORING DOES NOT GIVE YOU POWER all it does is waste bores on the cylinder. and i would get a weisco piston over a namura anyday. boring sould only be like 50-60 bux and the weisco piston and gaskets like another hundred dollars
Do NOT waste bores. Only go to the next overbore.... If the cylinder is currently 67.75mm then 68mm is the next bore. Do not just waste bores by going from 66 to 68mm in one jump!
The next overbore is the next available piston size that will clean the bore of all scratches, taper, out of round and gouges. A 67.75 mm cylinder with .009 taper will require a 68.25 mm piston. Measuring the wear of the cylinder is the only way to determine the next oversize piston.
Very true, but my point was, his original statement said that he was considering putting a "stock" piston back in it but he was unsure of the current bore size.
His next post was about the machine shop saying something about a 68mm piston.
The only reason to go to a 68mm piston is if the current bore size is 67.75mm (and the taper is within .005" obviously) because that's the "next" bore. There is NO reason to go straight to a 68mm bore from a 66mm bore unless there's damage that can only be taken out by a 68mm bore size (which is highly unlikely)
I actually have a cylinder at the house right now which needs to go from 66.5mm to 68mm. The intake skirt broke but the previous owner kept driving (despite the air leak and the horrible knock) until the broken piston area had rocked in the bore enough to wear it away. The "next bore" for that cylinder truly is a jump from 66.5mm to 68mm.
