on my own personal 13B I tried roller bearings on the front and rear stationary gears over 6 years ago. there is pros and cons..

Still running? Die a painful catostraphic death? Pics? Care to share more of the first hand experience?

I'm curious as well.

Judge Ito is such a tease :p. Count me in on wanting to see the aftermath of the roller bearings/engine.

Pics or it didn't happen!!!

I found this information if any dedicated rotary fan is interested.....check it out!

http://www.precisionenginetech.com/t...edle-bearings/

http://www.southshorebearing.com/bearings.htm

http://www.daltonbearing.com/iko/iko...-bearings.aspx

http://www.directindustry.com/indust...ing-60788.html

Has anyone ever had a radial trust bearing fail in your engine? There are to many bearing designs, so there has to be a better alternative that will reduce friction and increase HP! Im only tryin to contribute to the forums knowledge and FLOW of IDEAS.

If they're better, why wouldn't Mazda use them?

Price.

Faster production....? Lower costs, and more money in there pockets... i geuss. Lol wouldnt you think so? :dunno:

Longer service life and quieter too

Well i found a donor car NA 88 I think it has a blown coolant seal. But anyway im going to try and cheap bastard rebuild, lmao with different bearings and see what happens. Im fasinated with rotaries and would love to contribute to any design or improvement. If anyone needs any designs of parts im proficient with AUTOCADD, so hit me up!

\,,/_ _\,,/ GIGADY

Hey, you can't argue with that - does the ideation and the testing.

Good luck with the build!

(Ideally you could dyno it with journal bearings and roller bearings).

Thanks for that, what would a 13b na basic bone-stock have with HP just to compare after this Ideation and testing?

Depends on a lot of factors. Port size, geometry, compression, measuring location, flywheel weights, etc, etc, etc.

My S4 NA stock ECU with 7 degree advanced timing and 4 clicks lean on the AFM made 138 WHp per my G-Tech (which I have found to be pretty accurate).

I think (although I didn't copy the run to excel - so it's just from memory) that the S4 NA with a manual transmission did about 118 WHp with stock timing and stock AFR.

My S5 Automatic with stock timing and stock AFR (can't adjust S5) runs 102 WHp per the G-Tech. Made 120 WHp with 7 degree advanced timing.