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HELLO I AM WORKING ON A STIHL 046 BIG BORE WITH A 54MM PISTON DOES ANYONE KNOW THE RING GAP THE PISTON HAS RUBBER RING STOPS IN SO I THINK RING GAP SHOULD BE BIG I AM NOT SURE PLEASE HELP THANKS!
How far do you have the ring into the bore? That seems excessive to me but for the life of me I cannot remember how much clearance per 10mm of bore there should be. It's probably been written in a post before, just need to search maybe.With the rings squeezed in the cylinder there's only about 8-10 thousands ring gap.
@madhatte, can you move this thread to chainsaw forum? Thanks.
With the rings squeezed in the cylinder there's only about 8-10 thousands ring gap.
In the good old imperial measurement days it was 4/6 thou per inch of bore can't be ar**ed to work out the metric.thanks for the info I have 8 thousands
1mm = about 0.040In the good old imperial measurement days it was 4/6 thou per inch of bore can't be ar**ed to work out the metric.
I have this picture saved on my PC, no idea where I got it from (.008-.016"):
View attachment 548761
This one is saved right next to it:
View attachment 548762
Thanks for that, Living in France all dimensions are metric but being originally from the UK & old school ( 80 years old) I tend to revert to Imperial measurements It's me age you know well that's my excuse & I'm sticking to it1mm = about 0.040
That's all you really have to remember for quick ref or to be exact, 1"=25.4 mm
SO 4 thou is about 0.1mm
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