1gen piston rings on 2gen pistons

[chanley talon]

Will 1st gen piston rings work on a 2g piston? I have a set of 1gen rings brand new and was wondering if they will fit on my 2g piston 1g rod combo? Thanks !

 

[chanley talon]

If anyone happens to come upon this thread. The oil ring is not the same size, not only that but there are 2 different 2g turbo pistons. So the only way to really tell is either measure the oil ring or go to the auto parts store and ask for some rings and try to put on the lower oil ring. You will find out what you got real quick. If anyone else would like to add to this be my guest.

 

[Bohrn]

he is correct!

There is a 3.0mm oil ring land gap and a 2.8mm oil ring land gap!! Yea, lets change it THAT much!

I found this out the hard way. Hastings had some.

If you have 1g rings, they will fit all 1g pistons and most of the 2g pistons. But if you have 2.8mm oil rings, they will only properly fit a few 2g pistons.

Its pretty obvious if you have an oil ring assembled and a piston in your other hand, but its hard to see by itself.

 

[groundPork]

Quick dimension to check to see if a ring set is acceptable for use. This does not include a tension test.

Check ring side clearance. Place the correct ring in it's correct groove, and use a feeler gauge set to check how much space is in between the ring and groove. Simple enough, this is you side clearance. It should be between a tight .001" and at the very loosest .003". especially on the top ring. This does not mean the engine will "blow up' if you have .0035" clearance. it will wear faster though. It would not likely end in catastrophic failure. But over time, it does account for more wear on parts. Doubt any one would notice though.

Last thing, and most important. back clearance of the rings to the pistons. I use this rule of thumb if you do not have means of measuring this dimension very accurately. If, when you place the rings in its groove, you get at least .010" on a stock piston for back clearance your safe. Meaning the ring does not protrude past the ring lands when in the groove. not having back clearance on a ring usually ends in a lot of carnage.

 

[chanley talon]

Does anybody know what years came with the 2.8mm and what years came with 3.0mm? ANSWER! There is a early 95, and a late 95+. The later has has a 2.8 oil ring land, and the early has a 3.0.