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Hi everybody,

Not sure if this is the right spot or not, but i couldn't think where to put it....

I was looking down the spark plug hole on my RB25det and the pistons had markings on them (not sure if it's from factory or not)

Pistons 1,2,4,5,6 have_________________2_______________Front

____________________________________ H36________________________Mid

____________________________________210_____________Back

But the no. 3 where it says h36 says h26?????

if any1 can help tell me the meaning of these it would be great, also if any1 has pics of the top of some standard pistons

Thanks

Edited by axe s
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https://www.sau.com.au/forums/topic/170856-piston-confusion/
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come on pplz help me... is it standard bottom end or freshened up,,,

quiet possibly could have had a set of bearings put threw it because as you prob no there known for having the standard oil pump shit them selfs, the 2 that you see on the top of your pistons indecates that there 20 thou over size meaning at some stage it has been bored. i am unsure what the other sized number means but ill try to find out for you

  • 4 months later...

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