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| 0.080 piston rings https://slantsix.org/forum/viewtopic.php?t=44760 |
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| Author: | terrylittlejohn [ Wed Apr 27, 2011 5:04 pm ] |
| Post subject: | 0.080 piston rings |
has anybody got a contact that i can buy a set of stock (not metric) 80 over cast piston ring or cross reference rings i can use? |
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| Author: | DusterIdiot [ Wed Apr 27, 2011 7:58 pm ] |
| Post subject: | Lol... |
You know I thought it was funny that Rock Auto has .080 over pistons in the menu...but the OS rings only go up to .060... Good question to ask.... -D.Idiot |
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| Author: | emsvitil [ Wed Apr 27, 2011 8:20 pm ] |
| Post subject: | |
You may be able to determine a part number for the .080 from the .060, then look for the .080 rings......... |
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| Author: | LUCKY13 [ Wed Apr 27, 2011 9:40 pm ] |
| Post subject: | |
The only engine I have found that runs that size bore is some of the Harley Davidson bikes. I have no idea what ring package they run though. I am guessing you all ready have your pistons. If not I would go a different route. Jess |
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| Author: | emsvitil [ Wed Apr 27, 2011 9:51 pm ] |
| Post subject: | |
Standard size is 3.40 2 compression rings of 5/64 1 oil ring of 3/16 Oversizes would be 3.42 3.43 3.44 and 3.46 You need to find a piston that uses 2 5/64 rings and 1 3/16 that comes standard at 3.48 bore or can get there with oversizes...... |
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| Author: | LUCKY13 [ Wed Apr 27, 2011 10:01 pm ] |
| Post subject: | |
I just confirmed that the Harley Davidson piston are the same ring thickness as the slant six. Its one of the older HD's that have the 3.480 bore as a over bore ( I think it was the pan or KNuckle). This shoudl get you a set if you look close at the specs. BTW I bet some of the Ozzy guys can come up with a set also. Jess |
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| Author: | Joshie225 [ Wed Apr 27, 2011 10:06 pm ] |
| Post subject: | |
I just e-mailed Hastings to see if they make the 687 in +.080". |
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| Author: | emsvitil [ Wed Apr 27, 2011 10:21 pm ] |
| Post subject: | |
GM had a 4 cyl (140cuin) at 3.50 73-77 GM 8 cyl at 3.50 (267cuin) 79-81 Olds 8 cyl at 3.50 (260cuin) 79-81 with the 5/64 and 3/16 rings. You could probably file fit these if you had to. |
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| Author: | emsvitil [ Wed Apr 27, 2011 10:35 pm ] |
| Post subject: | |
The Harley pistons are listed as 3 7/16 = 3.4375 some listings say 3.438 Then lots of oversizes .010 - .070 (.010 step) I'd use .050 and file fit. Note: I haven't found the ring thicknesses for the HD rings.... |
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| Author: | emsvitil [ Wed Apr 27, 2011 10:41 pm ] |
| Post subject: | |
Doesn't look like the Harley rings are the correct thickness: http://www.hastingsmfg.com/RingFinderMa ... Y-DAVIDSON |
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| Author: | terrylittlejohn [ Thu Apr 28, 2011 5:16 am ] |
| Post subject: | |
these piston are in the blower motor, i was looking for a spare set if i cook the rings, it has happened before.did the older 2.2 dodges have a 0.040 over piston that used a standard ring not metric? i have e-mailed hastings to, no answer yet. the GM vega had a 141cid 4cyl with a 3.50" bore will these file to fit if i can find them? are the 267cid a 3.50" bore to? i haven`t checked these. all the supplier have the piston but no rings. rock auto have drop the piston so i don`t know what that means! |
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| Author: | terrylittlejohn [ Thu Apr 28, 2011 5:50 am ] |
| Post subject: | |
i have found 2 sets on e-bay , standard 4.4l gm truck but the decripition saids 5/16", i think that`s a miss print! |
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| Author: | terrylittlejohn [ Thu Apr 28, 2011 8:15 am ] |
| Post subject: | |
i just got an e-mail from hasting`s,Terry~ We do still have the set in our line...a 3.4800" bore with a 5/64, 5/64, 3/16 ring groove layout. You can order directly from Hasitngs on a credit card by calling 1-800-776-1088 #2. The set you would order is a 687080 for a plain cast iron top ring - $57.46 + shipping, 2c687080 for chrome top groove ring - $79.35 + shipping or 2m687080 for a moly top ring - $67.24 + shipping. If you have other questions or need further assistance, feel free to contact me again directly anytime. Best Regards, Lisa |
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