TNTHEMIENGINES
New member
Anyone have any experience with using a piston ring other than the Keystone style. I am not happy with the leak down numbers I am getting.
No you are not. And it is maybe 50 years old technology.What pistons and rings to use is all dependant on the application. We have developed a new forged piston that has a steel insert made into the piston to support the top ring land. We are the only ones to have this technology.
He said forged piston with metal insert not cast with metal insert. Why don't you tell who else makes them if there are others.
The technology has been around quite some time. Just go read Mahle's list of patents (some long expired) and their references and you'll get an idea of how much this has been researched and applied.
D&J might be the only folks currently selling it into this market.
I'd like to know from Drew how many engines and miles on their stuff, how many tear down and inspections, how many used pistons cut up to see what the bond looks like, etc.
It's not rocket science to get the steel insert in there. It is a bit of rocket science to get it to stay in there over the long haul without coming loose.
Pretty sure he meant in the "diesel pickup aftermarket". Other markets are of no concern in this case. I'm glad he decided to try it out.
Agree with you.....BUT....if it was truly novel and reliable, a much wider market would be interested pretty quickly. Like one particular customer big enough that pulling trucks would become a total side show.
Does the hp level factor into the equation at all? I'd think 5500 miles in an engine that did over 1500hp to the tires and went 9's in the quarter would be a bit more stressful than 10k or 20k in say a vp daily driver. I have no dog in this just seems like these are being condemned before they are widely in use.
It's a matter of perspective. There are forged pistons without steel ring lands that go high HP and are already lasting over 20K mi....so when someone says they have a better mousetrap, people ask questions, that's all.
I think everyone would like to see the technology be successful. It's good for all of us.
However we have seen enough bad examples of "development" that people have become cynical. Have to expect that. I don't think Drew's gonna lose an ounce of sleep over this thread. It will only serve to increase interest, I think.