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CR500 topend on FL400 Pilot
Posted: August 4th, 2014, 1:01 pm
by Kuma
Here is another 500 top end on a Honda Pilot, he had a problem with the piston breaking between the ring grooves on the intake side. here is the link to the pilot forum, I noted that the oil holes were not drilled for the exhaust bridge, would that have caused the failure?
http://www.pilotodyssey.com/PO/viewtopi ... =2&t=14552
Posted: August 5th, 2014, 7:37 am
by Roostius_Maximus
I've seen that. Not that its a bridge deal for sure because I've seen it even on a bridgeless one but the top of the boost port will be higher at the outer edges than the center and not have much chamfer. A little snuggle up of that ring end gap never helps but it'll snag the ring land on the port edge and bust it out exactly like pictured.
Posted: August 5th, 2014, 12:29 pm
by Kuma
I noticed that it didn't look like it had much if any camphor on the ports, is that what you are saying?
Posted: August 5th, 2014, 2:00 pm
by Roostius_Maximus
the boost port has been "ported" with a sanding roll and its left an M shape to it.