Stormlasher

I was wondering if any of you guys had a keen say to see how it looks, it feels OK to me but just seeing if you guys got a sharper Eye caus I have never done this before.

Eddy rotor

I hope it looks OK. Last weekend I did the same with an RX8 engine that stood still for 5 years after a water seal break...
It looks almost the same. And the rotors look almost perfect after a bath in the ultrasound cleaner
I'm new here to.

jcbrx8

Not the sort of thing you want to entrust to a "look see". I highly recommend you check proper rebuild tolerances (see link) w/a set of calipers and feeler gauges.

Rotary Engine Rebuild Tolerences & Torque Settings - AusRotary

All the best.

CaymanRotary

Hard to tell with pictures. Doesn't look completely ruined but definitely needs the carbon and oil cleaned off. Possible you will need to replace housings and a rotor or two.

TeamRX8

iTrader: (25)

nobody on this planet has a sharp enough eye, thats why micrometers, thickness gauges, and a rebuild manual with measurement specifications exist

but you can save yourself a lot of trouble by buying new rotors and rotor housings as a standard Renesis rebuild practice

but if you can live with a so-so engine wrt performance and eventual life then go ahead and reuse those parts instead
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GoodfellaFD3S

I'm curious as to why you'd recommend new rotors as a standard Renesis rebuild package?

TeamRX8

iTrader: (25)

because it’s not like the previous 13B engines at all. If you go back and study the SAE Renesis paper and then see my own posts on here about what makes a Renesis sideport completely different than the prior engines wrt port overlap/leaking it should become apparent. The rotor side clearances are much more stringent on a Renesis. That plus the shallow Renesis apex seal depth wallows out the apex slot way sooner. The Renesis is also very sloppy wrt rotating assy balance.

bottom line is that if you want a well performing Renesis then the used rotors won’t let you get there. The exception is if they’re machined for the deeper RX7 apex seals from new and the rotating assembly is fully balanced, and then you can get several rebuilds out of them.

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Snox801

Oh come on team your not giving rob dahm enough credit. Lol.
I like his videos but he seems to have a lot of failures after just putting things together.
I’m a very competent bike and sled engine builder and I’m still not sure I’m gonna tackle my own rebuild. Because like everything it’s all knowledge learned over time with tricks of the trade. What if I make one rookie mistake I didn’t really know about. Then start over and it cost more than a good shop in the end.