New life for FB´s 12A

[re japi]

I checked, that pulley goes to many positions... I dont get it...

But finally I got my stupid little project Sunny ready. Hopefully I can go to shakedown (break) it soon...

Also I started to clean my diff. Its very dirty compared to engine and gearbox...

[boosted]

lol i had a sunny 2.0 gti when i was a youth!  cracking motor. Bullet proof my mates all took the :censored::censored::censored::censored: till it smoked every last 1 of them!

[boosted]

Why dont you stick the rotary in the sunny? use Pulsar Gtir rear diff and shafts... front drive shafts split at the cv joint ....rotary powered rear wheel sunny! would be a hoon to drive! Contemplating similiar with my mitsi Colt...need to get evo 123 rear axle as direct fit.

[re japi]

lol Boosted. Yes, I did have crazy ideas. But then reality hitted me and desided just to go with my original plan. Fb parts will go some old school cruiser, will be having retirement days.

[boosted]

I thought a Mazda MX6 as well! lovely motor pick them up for about £600.00 here but then you can get an rx8 for that so will prob end up with another rx8 ! When the colt engine dies then ill convert to rotary power...but that engine is sweet but taken alot of abuse over the last 5 years!

[re japi]

lol

I also planned to swap Kawasaki bike engine to back. Would be fun with 150 horses on but no reverse gear!

My diff is clean and painted now. But breaks are in bad condition. Basically they are seized to solid lump... Those metal plates behind brake disks did give me hard time. So I cutted them to pieces and throw them away...

[re japi]

Brakes are really giving me hard time... I think I need rebuild kit. Seals and stuff are gone. Does anyone got rebuild kit?

[re japi]

Diff is slowly coming together.

Those things around spark plugs started to :censored::censored::censored::censored: me off. So I took drill and Dremel. Its not pretty but much easier to change plugs...

Then I thought that I have deserved a beer :cheers

[Grant Monkhouse]

Well done, those stupid spark plugs surround were taken off my rx4 engine by Carl as they\'re such a pain!!

[re japi]

Ya, stupid US version rotor housing...

[SSScoupe]

Yeah, I really dont know can it be done... But if I get it, I can do profit just to get it running with original setup...

I do have questions and opinions about my engine though. I´m trying to get maximum torque out of it. Its street ported.

-Should I use original carb or weber/dellorto?
    -If using weber/dellorto, should I use side carb or top of the engine carb?
    -I think I have to do cold air intake, so should I do long or short system?
    -Fuel pressure?

-Should I use long or short headers system?
    -Any ideas about lenght and diameter?
    -What kind of silencers to get it "quiet"?

-Should I use original coils?

-Should I use premix gas with oil?

-Original oilcooler or new?
   -How big is needed? Because engine will be in very difficult place so air flow will not cool it.

-Radiator system? Because same reasons...

All ideas, opinions are needed! Thanks

My 12a half bridgport is running the following set up:

Weber 45 DCOE on Rotary Shack Manifold with filter socks - i chose this over a IDA set up as i understood that it should help with peak power earlier in the rev range

Redback headers into custom twin primary pipes almost to the diff, then into a hotdog with an electric butterfly valve into a 3"pipe over the diff into a large 2.5" stainless packed truck style muffler. Valve open its about 96db.

Running rx7 fc coil and bosch coil on a Direct fire ignition set up

Locked distributor

I\'m running premix but really the original oil pump system should have been fine.

Running a Carter Black fuel pump with a fuel tank modified to take 1/2" fuel lines.  Aeroflow 1/2" pipe runs on a return system to the tank at about 4psi.

Recently installed an Aluminium radiator and oil cooler which i yet to run the car with as i need to fab the brackets to fit. Has a single thermo fan.

Carb is still on a base tune with basic jets etc but in the 500kms of testing i\'ve done so far it pulled like a train!  Can\'t wait to get it running again!  Good luck with your build!

[re japi]

Thank you!!! Really good info

[re japi]

Forgot to thank Clive for my present! Thank you sir!
Now I can do some progress to my diff and brakes.

Also, thanks to Steve and Chris for trying to do that mustard prank on me. My bro was laughing hard when I told him that

Another topic: I have been visiting Miata club of Finland´s track days for a few days now. I desiced to join them in Facebook and in their Forum. As I told to Lisa in RS11 we dont have rotary forum here in Finland, and actually we dont have active rotary members. We do have Mazda forum, but they always and usually have their events far away from where I live. So thats why I joined Miata guys. I dont regret to join them, really nice people, active and has lots of track days near me. I also talked with them that some day I want to do a Miata with rotary. They loved that idea and really wanted to support me if they can.

[re japi]

Funny thing happened few days ago. My workmate asked me if I need another diff for my project. His boyfriend has diff with LSD and 5,125 ration. They didnt know if its Mazda part so they asked me.

He sended these photos and said that ring and pinion has markings 1480. Also he send this pdf to me. Check 1480-27-110 on that catalog...

 https://www.google.fi/url?sa=t&source=web&rct=j&ei=r7YfVIOVCKu7ygOmyICwAg&url=https://www.mazdamotorsports.com/pdfs/catalog/07_Differential_Drivetrain.pdf&cd=2&ved=0CB4QFjAB&usg=AFQjCNGy8uKsBvcS8dbfb7y8gLkGCPhkrw&sig2=XNwkZDORAPImP4RqGrdozg

Is this true? Is it for my diff? And how much I will pay for it...?

[clive]

To be sure, from memory you need to know the amount of teeth then divide the pinion amount into the crown wheel and this will give you the ratio