Aluminium Bronze Sealing O-Rings

I am trying to avoid doing an o-ring set up in our shop drag car, as it will require customer plates to be made up that just won't ever get used again, and I came across the 4g63 that uses the sealing o-rings that have a recess cut in the sleeve, which is much easier for a machine shop to do. I cannot for hte life of my find any supply company selling the o-rings. I have reached out to Jett Racing, but hoping someone in here may have more information.

I believe you're looking for "Wills Rings", you should be able find several suppliers using that term, then it comes down to the sizes.

I have been looking for a few hours now, no one will sell them outright that i can find. I put in a call to a local airplane technician, as that seems to be the primary market.

Have you tried contacting the manufacturer directly - https://www.trelleborg.com/en/seals/contact-form

There's quite a lot of good info' on their site - https://www.trelleborg.com/en/seals/products-and-solutions/static-seals/wills-rings-o

I sent them an email. The information is on their site, yes, but not a means of ordering. I am looking at the fantastically named "groove-o-matic" system right now, mull it over with the machine shop.

Cool, I suspect you won't need the tool, just a well set up mill, but please update with the progress you make.

Trying to remember, but I think an aquaintance used them on one of his engines, but that was around 40 years ago, and I can't really recall details.

I ordered it, and will give it a go, the machine shop is concerned because it does not also cut a recess in the head, but i suspect that is why they use a copper material with a MLS gasket, instead of a harder steel material with a copper gasket.

I can understand their confusion, they work a little differently from the solid rings that are normally recessed. If you haven't done so, send him/her a link to the the tech' papers on their site, IIRC, the specifically automotive stuff was on page 16(?), or thereabouts, but the whole thing is of interest because of the different designs and characteristics.

Been trying to think of the engine details, but conflating it with other things - like a simple step at the top of the bore the ring sat in, but it HAS been a long time!