this is my plan for the engine to be put in my FB so far. what do u guys think? suggestions? TIA

GSLSE Rotor Housings
Lapped & Polished 12A Side & Int. Plates
13B EShaft
Ceramic Coated S5 13B Rotors
RB Lightweight Steel Flywheel
RB Hardened Stationary Gears
S5 Front & Rear Counterweights
Large Streetport Intake
Large Streetport Exhaust
All New Seal Springs
Rotary Aviation Apex Seals (2 or 3mm?)
New Side Seals
13BREW Corner Seals & Plugs
New Rotor Oil Seals

 

what about rx-8 rotors with machined apex seal slots?

 

is that all that has to be done to make them work? what is actually done in this process?

 

im not 100% ive, but as far as i know to use them in a regular 13b you use one of the 2 oil control ring grooves on the side and get the apex seal slots machined to work with regular 13b apex seals (rx-8 seals cant handle the peripheral ports IIRC)

 

i thought about it and decided that im gonna turbo my engine in the future so i would like to keep the compression lower so ill go with the s5 rotors instead

 

What is the compression on the rx-8 rotors? Are they lighter than the lightest rx-7 rotors?

 

10 to 1

and yuh, they are the lightest

 

bump

 

Can't you reduce the compression of the RX-8 rotors?

 

why, it would be easier just to use s5 rotors

 

Less weight? I thought you already had the RX-8 rotors, sorry.

 

so any suggestions?

 

3 mm seals and a 150 shot of nitrous injected from nozzles placed at the bottom bend...

 

3mm xeals suck ***. The point of going with a 13B is so you can use the later rotors with 2mm seals, so use 'em!

I like the setup (especially the 13B e-shaft - always important to use in a 13B ) but I'd do two things: I'd brew up one of my special exhaust ports instead of (what I assume you refer to) the RB streetport exhaust, which opens waaaaaaaaaaay too early. And I'd use the aluminum flywheel instead of the steel one.

 

Ceramic Coated S5 13B Rotors


That's the Only thing different between what you are talking about doing than what I did with my engine.

www.swimhurricanes.com/rxpage.htm

 

fixed it

 

3mm seals and a progressive-control 250 shot of nitrous......obliviates any advantage to 2 mm seals or turbos...

 

just to be pedantic

turbos have the benefit of recycling (otherwise) wasted engergy
and can be tuned to deliver similar / same power for similar / less fuel (depending on the setup)

 

I came up with my own exhaust port which also does not open too early. I really like it.

 

Loose the ceramic coating on the rotors and just stick with 2mm apex seals. Lots of people have problems when they machine the slots and use aftermarket seals. Not worth the risk.

 

Yes, I imagine a $350 turbo kit would do the job quite well........if you could find it or build it...

 

im not gonna use nitrous
i like the idea of a different exhaust port
so i guess ill use 2mm seals ( why are 3mm bad?)
rxseven, why should i lose the ceramic rotor coating? it boosts the power.

edit: the engine is gonna be n/a for starters and sometime later on ill install a turbo setup. n/a id like to get it tuned to 200 at the wheels, some may think its a little far fetched for a streetport but i think i can do it.

 

3mm is bad because 2mm works better at high RPM.

 

They're also harder on rotor housings and they don't seal as well. (3mm that is)

Strength is a non issue, you won't break apex seals with an N/A engine.

Also, the 3mm's are now absurdly expensive!