Nitrous Rings. ( Hellfire, Stainless )

[jsj372]

Anybody using them??? Any comments on them?? :smt017

[Monty Mikho]

Only way to fly!!

The G-2000 Tool Steel rings suck!! I crowned the rings after just 4 passes. The tool steel rings are also hard on the cylinder bore. They need special hone also.. Waste of time and money in my opinion..

The Hellfire rings are softer but seal a lot quicker and take a lot more heat.. IMO..

[Jim Monson]

I use the hell fire rings as well.

[jsj372]

Thanks guys!!!

[amature]

I use them as well. I have a set here that came out of the motor after two years of street driving and many many passes down the 1/4. They are pretty soft but they look great.

[Mark Nealen]

Hi :-D
Looking for a little input on what rings to use on a nitrous motor. BBC 4.5 bore, also ring end gaps. What about piston coatings? any info would be greatly apresheated.
I recently burnt two pistons in my 454 bbc with a 250hp nitrous shot and I am not shure why :shock: . I only melted #7 & #2 right along the valve releaf and it stoped at the top ring. I did hit the rev limiter hard once when I had some sever wheel spin would that cause this to acure?

Thanks any info on this would be greatly apreasheated :)

[jsj372]

I talked to a well respected engine builder here in Det. who also developed many Nitrous and Turbo engines and he recommended me to run the Hell Fire rings gapped at .006 per inch of bore then subtract .008 from that number to get the setting for the second ring, then run the oil support rings at .012-.014. So for a 4.5 bore x.006 =.027" top and .019" for the second ring. As with any question...get more than one opinion. As far as the coatings, I would wait and see what Monty has to say. Good luck.

[RPM]

Perfect Circle Fire Power rings would work great for your application. What ring stack are you running? Non coated PC479 material (Hard Ductile Top Ring) will hold up great. I would run .006" - .007" for top ring gap and open the second an extra .002". The oil ring gaps you can run as tight as .015" but I would say most box sets will come in at .025" on the rails. Thats ok since 80% of the oil control comes from the second ring. Some folks just like tight rails, nothing wrong with that since you dont get a lot of growth out of the oil ring.

If you have any other questions feel free to ask.

RPM.....

[Monty Mikho]

I would also say the HellFire rings.. RPM is the best guy for this question as this is what he does for a living. I can only tell you what my personal experience is with rings on my applications/combos.. G-2000 TS rings sucked.. Hell Fires always worked great.. I always used .0075"/per inch for the top ring and .0075/per inch + .002" for the second ring. I have not found any power in finding the right gap for the rings. So I play it safe...

[outlawss]

im rebuilding my 555 i just bought new pistons. what rings should i use? its a 555 with two stages on it. i plan i on hitting it with 400 total on the spray. its a 14:1 comp. piston 1/16 1/16 3/16 ring grooves, also theyve been gas ported..... im using a vacuum pump. what style rings would you guys use and what gap to make the most horsepower???

[NPS Nova]

Hellfire's. I'm sure most will agree. 8)

[n20mstr]

I have a big Mopar with a 4.375 bore, since im cheap ive been using a Ross off the shelf piston that has worked well so far, it has a 1/16 1/16 3/16 ring package, I have been using Moly rings and it was worked ok for a while now, Im hitting it with a combined jet size of .113 ( fogger and plate) and like i say its worked good so far, i want to know if i can get a Hellfire or nitrous specific ring in that 1/16 size, to be honest i havent even looked any where, just asking here. I want to hit it with more nitrous and i know the Moly rings are not too good for higher doses of nitrous, also would it help to add a vacum pump to this engine?? thanks

[NOS-Nelson]

You should go with a Hellfire ring set. Moly faced rings don't like detonation. And yes a vacuum pump will help any engine.

[mhancock]

Hellfire rings here too. They are the best nitrous ring that you can get IMO.

[n20mstr]

sorry to ask a dumb question, but who makes Hellfire rings?? Sealed power? and do they come in common sizes 1/16 and is it ok to use without gas ports??

[NOS-Nelson]

sorry to ask a dumb question, but who makes Hellfire rings?? Sealed power? and do they come in common sizes 1/16 and is it ok to use without gas ports??

Yes 1/16 is a standard size. Just need to makes sure what the radial wall width is. Should be about .195. 4.375 is a common bore size.

[redvictor]

sorry to ask a dumb question, but who makes Hellfire rings?? Sealed power? and do they come in common sizes 1/16 and is it ok to use without gas ports??
yes,sealed power,and in all common sizes,and perfect without gas ports.

[Boweevil]

I'm building a 360" sbf to run a healthy amount of sauce. GRP rods, gas ported Diamond pistons, TEA highports...should be around 13.5or 14:1 compression. I gather the Hellfire rings are the correct answer but I've heard they don't last long. I'd like the thing to be good for more than 30-40 hits before I have to replace the rings. What's the best setup?

[Sam Vincent]

I'm building a 360" sbf to run a healthy amount of sauce. GRP rods, gas ported Diamond pistons, TEA highports...should be around 13.5or 14:1 compression. I gather the Hellfire rings are the correct answer but I've heard they don't last long. I'd like the thing to be good for more than 30-40 hits before I have to replace the rings. What's the best setup?

Total Seal AP steel rings.

[Boweevil]

Total Seal AP steel rings.

Thanks Sam! Your opinion is highly valued. Hope to see you at the track. Maybe you can help me figure out how to get this thing to hook at 2900# on 325 BFG's. Should be fun.

[joesmithz28]

Total Seal AP steel rings.

x2

Nothing beats em for longevity.

[Ed-vancedEngines]

The HellFire rings are the most popular. They do have lots of wall tension.

Some builders prefer the Ackerly & Childs Tool Steel.

I prefer and exclusively use the Total SEal AP Stainless which is actually a Top Fuel Nitro Ring. It will take a ton of heat. It does not have a great amount of wall tension. Many times I just reuse them if doing a minor freshen with only a glaze break honing.

I also deal with only one person at Total Seal. Keith Jones is my main and only man there.

Ed

[Collinsautomotive]

I like the Mahle Nitried Steel Ring for nitrous/boost use. They are low tnesion but seem to be able to take big heat. They also have the best overall flatness of any ring I have ever seen. Check them out if they offer them in your sizes.

[hiredgun93]

Hell Fires are too hard of a ring that tend to damage the cylinder walls over time. Not really a concern with a good aftermarket block but definately too hard for stock blocks.

[Rick Crawford]

Total Seal AP steel rings.

I'll second that.....

[Cs19]

Childs akerly HTD ring same as hellfire?

[notsobroke]

i use Childs akerly HTD don't seem to have a problem with them.

[trink408]

Total Seal AP steel rings.

x3!!!

[388Monte]

I'll second that.....

The rings worked out good for ya then?

[GreenDragginBu]

Not to highjack the thread, but at what HP level is the need for a dedicated ring for nitrous??

I will be using a 250 plate kit on a 496 BBC. should i go with the TS-AP's or just stick with a convential top ring? It will not be sprayed every time.

Thanks in advance.

[NOS-Nelson]

Not to highjack the thread, but at what HP level is the need for a dedicated ring for nitrous??

I will be using a 250 plate kit on a 496 BBC. should i go with the TS-AP's or just stick with a convential top ring? It will not be sprayed every time.

Thanks in advance.

Anything above 150hp and you should consider a non Moly faced ring.

[388Monte]

Anything above 150hp and you should consider a non Moly faced ring.

Agreed !!!

[Ed-vancedEngines]

Total Seal AP Stainless is a Conventional style of ring. It is not Gapless but you can buy them in Gapless packages. It is my belief that the Gapless does help between cold start until operating temp and I do use them on street engines.

In Race engines with nitrous, I only do conventional. Agree also about the 150 max nitrous limit with a moly filled ring. Same with boosted engines too. Moly does not like boost.

Ed