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Flatlander
10-22-2021, 08:52 AM
I am getting ready to freshen up my 260 and looked into getting new rings for it. The last time I bought them they were around 400.00
This time they are upwards of 600.00!!! WTH....about fell on the floor!
I contacted an engine builder about possibly getting a discount on the TiN rings. He said he doesn't use those any longer and now uses chromoly black oxide coated rings
in nicasil bores. I thought I would get other peoples thoughts on using those rings. I trust the guy but have never heard of this done. They are much cheaper....
Flatlander
10-23-2021, 09:32 AM
no one has heard of using these rings?
half fast
10-23-2021, 04:22 PM
Years ago that’s all Gene Treichel used when building nikisel motors . Who is your engine builder ? Hf…
Dave S
10-23-2021, 05:13 PM
Ya be lucky to get anything..........
Flatlander
10-23-2021, 05:39 PM
I usually do all my own motor work...I was just looking for a better price on gold rings and that is when I heard about the black oxide coated rings. I don't want to say who I heard this from...don't want to cause a pissing match. I never had good luck with Gene, so I'm not sure that helps my decision.
Mrzip
10-23-2021, 06:40 PM
John Marles. Will take care of you.
Flatlander
10-24-2021, 01:37 PM
Have you actually run these rings in nic motor?





John Marles. Will take care of you.
Mrzip
10-26-2021, 08:52 AM
Yes.. Been in there 2 years. They Work Just Fine ;)
Dave Strong
10-26-2021, 10:50 AM
260's originally came with moly rings, TiN rings came out in later 90's to address complaints of early ring replacement. Moly rings seat quicker are easier on cyl plating but do not last quite as long as gold rings.

Dave
Flatlander
10-26-2021, 11:49 AM
Thank You guys! I figured they would be ok to use...but of course there had to be a downside to them. I was told they would go 100 hours, not bad. My current rings have 120 on them and still have some life left.
The big question?? Merc rings= $600.00 or Black Oxide rings $200

Mrzip, do you know how many hours are on the rings in your motor?
Mrzip
10-26-2021, 02:25 PM
Quite a few... It's a fishing motor.. I checked compression other day.. No Problems.
Qshot1989
10-26-2021, 03:19 PM
[QUOTE=Flatlander;3314427]Thank You guys! I figured they would be ok to use...but of course there had to be a downside to them. I was told they would go 100 hours, not bad. My current rings have 120 on them and still have some life left.
The big question?? Merc rings= $600.00 or Black Oxide rings $200


Who sells these black oxide rings? Any adverse affects to nicasil?
Stoker boy
10-26-2021, 04:19 PM
Are black oxide rings actually black?
half fast
10-26-2021, 04:29 PM
Yes , they are black. Gene gave me the merc number to order and use but I can't find the part number we used then .I do remember I had to order 6 because they came 2 per pack. hf...
Stoker boy
10-26-2021, 04:49 PM
Only thing I’ve been told on the 260 that I’ve used, is chrome with titanium nitrate coating. I never heard of the inexpensive black rings. Are the black rings good for super high rpm motors?
CI STV
10-28-2021, 08:58 AM
I’d just bite the bullet and buy a set of the Gold Ti Nitrate rings. Nic bore 2.5s are getting harder to come by and hanging a piston in the bore at high RPM due to a cheap ring breaking or sticking will make a nice window in your block. Don’t ask how I know. I see Powers has them for $599, which is a lot, but a lot less than replacing/repairing your powerhead.
rjdubiel
10-28-2021, 09:45 AM
you may want to check with Dean at Wizard too, his pistons use merc rings. Is this what your talking about with a stuck piston in an expensive nik block? haha check out number 4!

495477
Qshot1989
10-28-2021, 10:21 AM
John Marles has sets Chromoly rings that apparantly last just a long as gold rings and does not hurt the nic. He said he has seen no issues with them. $200 shipped for 12 rings. Probably Ti coated.
CI STV
10-28-2021, 11:15 AM
John Marles has sets Chromoly rings that apparantly last just a long as gold rings and does not hurt the nic. He said he has seen no issues with them. $200 shipped for 12 rings. Probably Ti coated.

Thanks. Good to know. That guy really knows his sh!t, so if he says it works, I would take his advice.
CI STV
10-28-2021, 11:18 AM
you may want to check with Dean at Wizard too, his pistons use merc rings. Is this what your talking about with a stuck piston in an expensive nik block? haha check out number 4!

495477o

That looks good to what I did to my first 260 years ago. It stuck the piston so hard that it broke the crank, the rod snapped and windowed the block so bad you could stand on one side and read a newspaper on the other!:rolleyes:
Flatlander
10-28-2021, 12:21 PM
These are the rings I have been referring to, they are black oxide coated.


John Marles has sets Chromoly rings that apparantly last just a long as gold rings and does not hurt the nic. He said he has seen no issues with them. $200 shipped for 12 rings. Probably Ti coated.
Flatlander
10-28-2021, 02:09 PM
I'm leaning towards staying with the gold rings. John said the black oxide rings would last 100 hours...does that mean they need to be replaced somewhere around 80-90?
I know the gold rings will go at least 120 hrs. It's worth the money to me for another 30-40 hours of life. Not to mention the cost of gaskets and seals to do a re-ring.
jmo