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Main : Misc Piston rings - which way up?

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Piston rings - which way up?
Piston rings - which way up?Popular
Submitterdatrat_daveMore Photos from datrat_dave   Last Update2005/2/21 9:35    Tell a friendTell a friend
Hits2483  Comments8    0.00 (0 votes)0.00 (0 votes)
I did this in paint, yes its dodgy i know....

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Poster Thread
datrat_dave
Posted: 2005/2/21 9:38  Updated: 2005/2/21 9:38
Home away from home
Joined: 2004/8/10
From: Melbourne
Posts: 775
 Re: Piston rings - which way up?
Right so in the manual it clearly states that the 2nd groove ring (compression ring) must
have the beveled edge pointing upwards but in the handout in the rings box it said it should be downwards....Im confused and need this info before going ANY further!!

Advice plz!
Cheers
Dave

Poster Thread
dattodevil
Posted: 2005/2/21 9:44  Updated: 2005/2/21 9:44
No life (a.k.a. DattoMaster)
Joined: 2004/1/20
From: Christchurch. NZ
Posts: 1382
 Re: Piston rings - which way up?
the bevelled edge is there to dodge the ridge in the bore, as alot of people don't go to the expence of a rebore

Poster Thread
datrat_dave
Posted: 2005/2/21 10:02  Updated: 2005/2/21 10:02
Home away from home
Joined: 2004/8/10
From: Melbourne
Posts: 775
 Re: Piston rings - which way up?
so therefore the bevelled edge must face upwards other wise it could catch on the side right?!

Dave

Poster Thread
dattodevil
Posted: 2005/2/21 10:13  Updated: 2005/2/21 10:13
No life (a.k.a. DattoMaster)
Joined: 2004/1/20
From: Christchurch. NZ
Posts: 1382
 Re: Piston rings - which way up?
So I believe, I am no engineer though and it has been a while since my last rebuild, But from memory the bevelled ring was on the top, Repco brought them out as ridge dodgers (protec rings).

Poster Thread
Dodgeman
Posted: 2005/2/21 10:18  Updated: 2005/2/21 10:18
No life (a.k.a. DattoMaster)
Joined: 2003/6/27
From: Southern Tablelands N.S.W. Australia
Posts: 8287
 Re: Piston rings - which way up?
Follow the instructions on the packaging that the rings came in. If you bought factory Datsun rings that were identical to the originals,... then the book info would apply.
If they are "replacement" rings, stick with the ring manufacturers instructions.

Poster Thread
kegs
Posted: 2005/2/21 10:55  Updated: 2005/2/21 10:55
No life (a.k.a. DattoMaster)
Joined: 2003/1/5
From: campbelltown (sydney) australia
Posts: 1802
 Re: Piston rings - which way up?
exactly what dodgeman said, its on the instructions ive build many motors and never seen a packet that didnt tell u how to do it.

Poster Thread
feral
Posted: 2005/2/21 12:25  Updated: 2005/2/21 12:25
Home away from home
Joined: 2002/5/1
From: Millgrove Vic OZ
Posts: 985
 Re: Piston rings - which way up?
If they are ACL or similar they will have a dot or mark on the top of the ring near the ring gap.
Check the ring gaps before fitting to the pistons..

Poster Thread
Cable_Tie
Posted: 2005/2/22 1:28  Updated: 2005/2/22 1:28
Home away from home
Joined: 2004/6/4
From: Brisbane, Australia
Posts: 770
 Re: Piston rings - which way up?
Have a look here

Ring install

As I was told many years ago: (sexual content?)

In regard to the bevel/chamfer on the ring:

If it is on the inside, it is UP

If it is on the outside, it is DOWN

Just like bedroom activity. Hey, it has helped me remember it all these years on!