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Piston rings

T

tired 8n

Member
Is it possible to install two pistons with 3 rings and two pistons with four rings in my 8n without any future problems??? (It' what I have on hand..and I'm cheap!!)
 
Would not recommend it...you will have compression issues, lubrication issues, plug fowling issues on the cylinders with one less ring. There should be someone out there with a couple of rings for you...pretty cheap...maybe free if you let us know what engine/size rings you need.
 
There may be a slight weight difference between the two, but this isn't a high reving drag race engine, once its all back togather you won't notice anything.
 
Using both types should not cause any problems. Friend had a tractor with 2 standard pistons and 2 over bore and ran for years that way., Perkins.
 
Actually how about that thought. Would it be better to just leave off the bottom oiler ring on the four ring piston ?
 
No, if you had to leave one ring off make it one of the compression rings preferably the 3rd ring down. The oil ring would just make it start pumping oil.
 
Thanks guys, for all the help. Since it appears to be far from a Unanimous decesion I best play it safe and put in all 3 ring pistons.

Thanks for all your help!
 
match install the pistons...install the pistons so that as one piston is moving down,its twin is moving up. This will help balance the weights.
 
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