http://www.xtremerotaries.com/main2/...large/stud.jpg



http://www.xtremerotaries.com/



I want!

nice

I think this could be easily duplicated... I'm not going to pay $400 aus for some friggin bolts... I have a local machine shop that I could have them drill and tap my front iron and whatever else needs machining..

" High strength stud kit eliminates the need for doweling the engine block.



All studs act as dowels which massively increases torsionial strength 70%. Rotor housing deflection reduced - increases apex seal life. Less material machined from housings and plates than with doweling, reducing the possibility of cracking.



High boost engine expansion reduced.



Studs are less prone to stretching under high boost applications. More accurate tensioning of engine.



Less chance of bolt breakage. High quality 12-point nuts rated at 180,000 PSI tensile strength. Studs manufactured from 4140 chrome moly, heat treated, centreless ground and black oxided.



Engine must be accurately drilled reamed & tapped to give 0.1mm clearance.



Standard replacement 13B kits available with no modifications.



20B kits available soon. "



Wow... They aren't playing around!

i donno how good this is though, in terms of strength for teh engine. i think u want it to twist some

I'd be REAL interested in seeing some practical testing data of these things.



B

Why would you want your engine to twist some? Whats the reasoning behind that. The way i look at it is, if the engine is flexing you are losing clearances that are supose to be maintained. This will cause increased ware.

Similar to how you don't want your chassis to flex.

But i could be wrong.

It would seem to be a pain to assembly, you will have the thread the stud through the engine and then tighten the nut. I know with some studs, they are suppose to he hand tight and then the nut is tighthen. What are the chances of the stud getting loose after some time. And what about the harmonic vibrations of the solid studs. I remember reading that a dab of silicone on the stock bolts prevent the vibrations. I would think that this stud is the same size all the way through, it would have more harmonic vibration than the stock bolts.

Considering that's $14 AUS more than what Mazdatrix wants for a set of stock bolts that's pretty cheap. I doubt you can get them made yourself for that unless someone cuts you a huge deal.



I think it will cost that much again to have all the machining done to make them fit.



I think it's pretty interesting though. https://www.nopistons.com/forums/pub..._DIR#>/dry.png