Piston ring orientation?

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17 Jun 2014 14:13 #636995 by madmatt1
Piston ring orientation? was created by madmatt1
I'm putting my 1977 KZ1000 engine back together this week. It has Wiseco pistons in it, The new rings came with little instructions that show how to position the rings for installation. The instructions are approximately backwards from the instructions in the Kawasaki manual. Granted, these are not the Kawasaki pistons, but does that really make a difference? Just wondering if anyone has opinions on which way to go.... I am assuming it isn't necessarily the actual direction each ring faces, but the overall staggered orientation that is most important?

1977 KZ1000 LTD
1977 KZ1000A

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  • slayer61
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17 Jun 2014 14:47 #636996 by slayer61
Replied by slayer61 on topic Piston ring orientation?
Yup.

Don't be ridiculous! It's only a flesh wound!

[strike]Wife's little bike... 1984 GPZ 550 Kerker and DynaJet stage I kit[/strike]
Wife's BIG bike......[strike] 1981 GPZ 1100 Kerker and [strike]factory FI[/strike] Mikuni RS34s W/ K&N pods[/strike] SOLD
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17 Jun 2014 16:10 #637002 by zed1015
Replied by zed1015 on topic Piston ring orientation?
It's good engineering practice to stagger the ring gaps on assembly but the rings rotate around the piston in operation and will line up thousands of times in their life so the actual position doesn't really matter.
If you took note of the ring position on assembly and then pulled it apart again after a short time running you would find that the rings will have moved anyway.

AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





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17 Jun 2014 20:02 #637024 by Tomolu5
Replied by Tomolu5 on topic Piston ring orientation?
I'm with zed on this one, I've had my engine open a few times in the past couple years and have found what zed says to be true. On assembly I had the compression rings facing east/west, and the oil ring facing north/south. There was a problem, and I had to disassemble with less than 50 miles, I found 2 out of 4 cylinders to have the compression rings lined up perfectly. I thought that I screwed up on assembly, but when I reviewed the detialed photos I took while assembling it, I discovered that they were staggered correctly during assembly.

Mine:
04 Honda rebel 250(wifes)
04 GSXR 750(bolt on galore)
98 CBR 600F3(filter, pipe, adjustable cam sprokets, dyno tune)
76 KZ900A (LTD gauge pods, crash bars, LTD(style)pipes, dyna coils and ignition,headwork and mild port cleanup by cavanaugh racing, K&N filter pods, heck I dunno.

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18 Jun 2014 05:35 #637041 by KZB2 650
Replied by KZB2 650 on topic Piston ring orientation?
Was so careful when I lined mine up ..... must a double checked em 5 times or more. Am surprised to hear this ..... and have been picturing them moving a little and worrying a little about it .....but since the comp is so good and even maybe I can finally stop. :laugh:

I'm sure I would get it perfect again though even though I know now they will be moving anyway. ;)

1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.

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18 Jun 2014 09:20 #637064 by madmatt1
Replied by madmatt1 on topic Piston ring orientation?
Well.. THIS is interesting to hear! It makes sense, but I never thought about it.... :huh:

1977 KZ1000 LTD
1977 KZ1000A

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18 Jun 2014 09:26 - 18 Jun 2014 09:27 #637065 by Tyler
Replied by Tyler on topic Piston ring orientation?
Yes rings will turn over time, some will often comment on how different honing marks and cylinder surface finish affect ring rotation and the way new rings seat etc. Don't know if there is any real truth to it all. I know they way I was thought, no mater what kind of engine be it a lawn mower or an aircraft engine, always stagger the ring gaps.

I would think ring rotation is good thing it would promote even wear of the piton ring. Probably why most of the time you cant see rings worn on the major thrust sides like the rest of the piston.

If I knew what I was doing all the time life wouldn't be any fun.

'80 KZ650 E 700cc, dyna ignition and coils, frame up restoration, daily driver
'81 KZ1300 A3 full restoration, custom big bore pistons, 1400cc 6 cylinder super bike
"77 KZ650 B1 - Barn Find, work in progeress
"74 Yamaha DT 400 Enduro
Last edit: 18 Jun 2014 09:27 by Tyler.

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