Rental oring/fire ring tool

[GorillaDave]

I am building a head for my 12v and I know these tools are kinda pricey. Does anybody have any sources of one that is available for rent?

[ILLINOISRAM]

I doubt your gonna find them to rent. The machine shops that have them are few and far between. Nobody is gonna just have them laying around. Orings and fire rings are way different. They don't use the exact same tools for both. My fire rings are .105 thick and take a round radius cut of like .030 deep so you get the proper crush with a stock hg. Orings are usually .035 thick and have a groove cut in head so it lays on top of the factory firering to provide more clamping force. There are more differences within each setup but you get the idea. Which one are you using?

[BlackSkyRacing]

I think he may be referring to the Isky tool for cutting the o-ring groove in the block. I believe Isky themselves does the rental, but it is more of a pay full price, use the tool, and get all but $80 of your money refunded.

[GorillaDave]

Originally Posted by ILLINOISRAM

I doubt your gonna find them to rent. The machine shops that have them are few and far between. Nobody is gonna just have them laying around. Orings and fire rings are way different. They don't use the exact same tools for both. My fire rings are .105 thick and take a round radius cut of like .030 deep so you get the proper crush with a stock hg. Orings are usually .035 thick and have a groove cut in head so it lays on top of the factory firering to provide more clamping force. There are more differences within each setup but you get the idea. Which one are you using?

Thanks for the info. I personally want to do o-rings. Would it make a difference if I cut the block or the head?

[GorillaDave]

Originally Posted by BlackSkyRacing

I think he may be referring to the Isky tool for cutting the o-ring groove in the block. I believe Isky themselves does the rental, but it is more of a pay full price, use the tool, and get all but $80 of your money refunded.

^^^^THIS. I could not remember the name of it to save my life.

[BlackSkyRacing]

Originally Posted by GorillaDave

^^^^THIS. I could not remember the name of it to save my life.

Haha, yeah just remember to get the Isky 200-GRM... That's the one for bores bigger then 3 3/4"

[BC847]

Originally Posted by GorillaDave

Would it make a difference if I cut the block or the head?

It's my understanding that: O-ringing the head means that if one were to later have to mill the head, you'd have to O-ring it again afterward. The idea being that O-ringing the block would perhaps, in most cases, need only be done once.

But of course the same applies if one were to mill the block . . . .



I think that heads get done most often as they're easier to pull and tote down to the shop.

[GorillaDave]

I believe that I am going to stick with doing the block as there is no one local that understands what I am talking about.

I am going to rent the tool and do it when the new head is ready to do on.

Thanks for the input and sources guys.

[Squatch]

O-Ring and Receiver Groove Cutter: BHJ Products, +1 (510)797-6780

[chevota84]

Originally Posted by Squatch

O-Ring and Receiver Groove Cutter: BHJ Products, +1 (510)797-6780

Do you know what the price is for that tool?

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[ozone burner]

If I rme ember right it is 1500.00 to 2000.00 it's been a few years since I priced it

[homewrecker]

Originally Posted by ozone burner

If I rme ember right it is 1500.00 to 2000.00 it's been a few years since I priced it

It's right around $1500 for the set up. I was looking into one last year. Do 6 or 7 heads and it will pay for itself.

Sent from Razr Maxx

[chevota84]

Thats pretty reasonable really. Has anybody used this particular one?

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[Jim Fulmer]

Doing an O-ring in the head, find a machinist to do it with a Bridgeport, all he would need is a head gasket and the wire you want!

Jim

[ldiesel]

I agree with jim have a machinist do it for you. those portable tools are notoriously inaccurate.

[chevota84]

Inaccurate as in depth or position?

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[BlackSkyRacing]

Originally Posted by chevota84

Inaccurate as in depth or position?

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Position... At least with the Isky piece the bore keeps the position consistent. Not to mention is considerably easier to set up.

I like the argument earlier about having to recut the grooves if the surface is decked. Being that you can buy the Isky tool for what it cost to have a machine shop o-ring the head, it will pay for itself pretty easy. Not to mention if you own a shop or have a group of friends that could also use it.

Just sayin...

[GorillaDave]

Does anybody know of a thread here that has some more info on o-ringing a block. I have searched and came up with few results. Again guys thanks.

[White Knight]

Originally Posted by ldiesel

I agree with jim have a machinist do it for you. those portable tools are notoriously inaccurate.

Accuracy and precision have A LOT to do with the machinist. A good operator with a not so great tool can still make a good product. On the other hand a inexperienced operator can really mess some stuff up. That's what worries me about do-it-yourselfers that don't have any experience. If it were the same price I would rather have it done by someone who has experience.


My local shop uses the BHJ tool and has done a lot of Cummins heads with very few failures on daily drivers or race trucks. He knows what he is doing and I trust his work.

[BlackSkyRacing]

I know you gentlemen all mean well by telling the OP to have a machinist do the work, but he isn't talking about cutting the head for O-rings. He's talking about cutting them in the block, which is far easier and can be done with less technical knowledge. Granted I do agree that heads should be cut at a reputable machine shop.