Cracked Piston ??
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Cracked Piston ??
Hi all and happy new year
I removed my pistons and saw that they are cracked from the bottom.
Did someone ever had this problem?
Thanks
I removed my pistons and saw that they are cracked from the bottom.
Did someone ever had this problem?
Thanks
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Re: Cracked Piston ??
I do not want to blame Arias at all as they are good quality.
I am just checking the cause before the next built as I am going with Arias also
The thing I want to say is that I think that this damage came, first the crack and then the crack caused the piston to touch the wall
I was running this P2w for this last season, more than 90 runs.
Last month I removed the head for checking before last event and walls where ok.
These last runs that something happened
I am just checking the cause before the next built as I am going with Arias also
The thing I want to say is that I think that this damage came, first the crack and then the crack caused the piston to touch the wall
I was running this P2w for this last season, more than 90 runs.
Last month I removed the head for checking before last event and walls where ok.
These last runs that something happened
#14
Re: Cracked Piston ??
I do not want to blame Arias at all as they are good quality.
I am just checking the cause before the next built as I am going with Arias also
The thing I want to say is that I think that this damage came, first the crack and then the crack caused the piston to touch the wall
I was running this P2w for this last season, more than 90 runs.
Last month I removed the head for checking before last event and walls where ok.
These last runs that something happened
I am just checking the cause before the next built as I am going with Arias also
The thing I want to say is that I think that this damage came, first the crack and then the crack caused the piston to touch the wall
I was running this P2w for this last season, more than 90 runs.
Last month I removed the head for checking before last event and walls where ok.
These last runs that something happened
#15
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Re: Cracked Piston ??
If thats the case then did you do something different on the last few passes it made? for example did you turn the boost up, or run a different weight oil., ect? My guess is that something added previously unseen heat to the piston causing it to expand further than normal and make contact with the wall. Once contact was made it cracked and continued to make contact.
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Re: Cracked Piston ??
There is a stress riser on the piston strut that needed to me removed on the off the shelf Arias B series piston.. The crack starts there.. Its not a machining/P2W issue
Last edited by uglyasscivic; 01-03-2013 at 04:45 PM.
#20
Re: Cracked Piston ??
had the same problem with some manley pistons , 3 pistons cracked at the same spot and one actually broke , my machinist said the cylinder walls were out of round and thats the reason why it happened.
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