While measuring ring end gap I have run into a little issue, I decided to go with Goetze standard size piston rings fyi.
When I measure my ring end gap with the new rings it come out to be .018-.020 which seemed way too high for a brand new set of rings, I originally thought that I may have honed out the cylinder too much until I decided to measure some of the old rings.
With the old rings I wound up with a piston ring end gap of .013-.014, which is quite odd being you would think the old rings would have worn down creating a larger end gap. My only other thought is the previous owner had the motor rebuilt and they used oversized rings. This doesn't really seem to be the case though being the cross hatches looked perfect and the stock rod bolts were still there.
Also to eliminate the idea of the cylinder bore being different through all 6 bores I have measured the one set in all bores and still had similar results. Also measured them at different depths to check for tape but none was found.
Has anyone had this issue, heard of an issue similar or know who may be able to help?
Can I expect the rings to expend and close the gap up once installed and heat cycled?
If I was going to install a turbo kit along with the build this would be a perfect ring end gap however I'm not going to install a turbo kit immediately and would like to see the specs a bit tighter for peace of mind. I still would like to see first if anyone has any ideas or experience to aid in this issue. Thanks again.
Specs call for .010-.020" end gap on the top 2 rings.
If necessary ill just buy a set of .25mm over rings and file them down just a tad to give me a more proper end gap of .012"-.013"
When I measure my ring end gap with the new rings it come out to be .018-.020 which seemed way too high for a brand new set of rings, I originally thought that I may have honed out the cylinder too much until I decided to measure some of the old rings.
With the old rings I wound up with a piston ring end gap of .013-.014, which is quite odd being you would think the old rings would have worn down creating a larger end gap. My only other thought is the previous owner had the motor rebuilt and they used oversized rings. This doesn't really seem to be the case though being the cross hatches looked perfect and the stock rod bolts were still there.
Also to eliminate the idea of the cylinder bore being different through all 6 bores I have measured the one set in all bores and still had similar results. Also measured them at different depths to check for tape but none was found.
Has anyone had this issue, heard of an issue similar or know who may be able to help?
Can I expect the rings to expend and close the gap up once installed and heat cycled?
If I was going to install a turbo kit along with the build this would be a perfect ring end gap however I'm not going to install a turbo kit immediately and would like to see the specs a bit tighter for peace of mind. I still would like to see first if anyone has any ideas or experience to aid in this issue. Thanks again.
Specs call for .010-.020" end gap on the top 2 rings.
If necessary ill just buy a set of .25mm over rings and file them down just a tad to give me a more proper end gap of .012"-.013"
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