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Ok time for those with piles of parts to start measuring....
Everywhere you look online 3100 replacmenet rings are 1.2mm x 1.5mm x 3mm.
respectively 3400 ones are marked as 1.2mm x 1.5mm x 4mm
Now I purchased 3400 rings for Roberts 04 3400 engine and the rings that came out were 1.2mm x 1.5mm x 3mm, so any and all aftermarket ones I could find would not work. Ben orders from Total Seal and can specify the oil ring size so I went with him rather than dropping $42 a hole for GM rings.
And I just found my old 2000 pistons that came from a wrecked Venture block and those were 1.2mm x 1.5mm x 4mm...
SO when did GM change back to 3mm for the 3400? is it in 03 like I'm thinking or do I just have a weird ass set of pistons? I did a motor in my Beretta, an 01 and I did both pistons and rings so I never noticed this issue, and may not have had it since it was an 01 engine... I also did the 05 motor in my 96, but never changed the rings, I also didn't note the size of them when I had the pistons out unfortunately...
So anyone have 00 and 03 pistons lying around to double check and see if I'm not crazy.
Everywhere you look online 3100 replacmenet rings are 1.2mm x 1.5mm x 3mm.
respectively 3400 ones are marked as 1.2mm x 1.5mm x 4mm
Now I purchased 3400 rings for Roberts 04 3400 engine and the rings that came out were 1.2mm x 1.5mm x 3mm, so any and all aftermarket ones I could find would not work. Ben orders from Total Seal and can specify the oil ring size so I went with him rather than dropping $42 a hole for GM rings.
And I just found my old 2000 pistons that came from a wrecked Venture block and those were 1.2mm x 1.5mm x 4mm...
SO when did GM change back to 3mm for the 3400? is it in 03 like I'm thinking or do I just have a weird ass set of pistons? I did a motor in my Beretta, an 01 and I did both pistons and rings so I never noticed this issue, and may not have had it since it was an 01 engine... I also did the 05 motor in my 96, but never changed the rings, I also didn't note the size of them when I had the pistons out unfortunately...
So anyone have 00 and 03 pistons lying around to double check and see if I'm not crazy.
