rotary_FD3S

I was just being " technical " hahaha I know it makes almost no boost if any haha

crzlito

You guys have been very helpful thank you

crzlito

Thanks for all the information guys.

neit_jnf

iTrader: (17)

IMO, if you stay NA you don't really need a 2-pc eccentric shaft with center bearing as long as your rotating assembly is properly balanced and race clearanced.

what I would do:

-street ports primary and secondary
-semi peripheral ports on the rotor housings
-custom staged intake manifold to keep secondaries and semi-p ports closed until triggered
-rx-8 rotor gears or other hardened gears
-9.7:1 scalloped, lightened, clearanced and balanced rotating assembly
-2-pc ceramic apex seals
-oil mods (increased pressure, external line, etc)
-cooling jacket mods
-good tuning running premix

you could get or surpass 300 whp this way with a streetable and durable setup

Evil Aviator

So how do you know that is legal for his race class? It isn't even remotely legal for the class that I race in.

neit_jnf

iTrader: (17)

Does he specify a race class anywhere in the thread?

All I see is summer street driving with some track with a streetable not too loud 300 hp all motor goal. So that's the motor I'd build for this scenario.

Evil Aviator

No, and that is exactly the problem.

diabolical1

iTrader: (3)

any links or references?

neit_jnf

iTrader: (17)

there's a well documented NA 20B with 9.7 rotors, ceramic apex seals, staged semi-p ports, etc. dynoed at 475whp. its somewhere in this or other rotary forum.

a 13B with similar treatment should be at a little over 300whp.

Evil Aviator

Defined Autoworks

The hill climb motors had a similar setup, but a higher rpm and more tweaks. Horsepower = (torque * rpm) /5252. Therefore, high-rpm engines will produce a lot of horsepower even though they don't have much torque.

diabolical1

iTrader: (3)

this is the reason i asked. it does make sense on paper, but i was curious to see if someone has actually done it yet. i am very aware of what Logan's car did when it had the 20B, but your previous posts assert "13B semi-pp", "get or surpass 300 HP", "streetable", and "durable" as established. and it's not that i doubt any of it is possible, it's just it may be a little bit "cart before the horse."

diabolical1

iTrader: (3)

i'm going to poke around and see what i can find on these when i get some time. i am intrigued. outside of Millen when he used to run rotaries, i'm not very familiar with what setups hill climb rotary guys run.

Evil Aviator

SPiN Racing on this forum (although he is mostly on the other forum) has one of the old engines. If you ask, he may send you a picture of the display board that he brought to DGRR. It has a bunch of stats and pictures of the car. It's pretty neat, but unfortunately I don't have any pictures, and I'm also not sure how much information he wants to share on the internet.

crzlito

crzlito

Found some information through racing beat.

diabolical1

iTrader: (3)

that information is a little dated, but (in my opinion) i think it may be more inline with what the average DIY-er can likely achieve.

Evil_Sephiroth

iTrader: (1)

I really don't like ceramic seal for this low hp target....

I prefere a major housing wear then the risk to shatter a ceramica seal and๒ destroy alla inside the engine