jeremyriv

Guys, short of throwing nitris (spelling? and is this even an option for a rotary?) what can you do to get more air into a 12A carbed motor?

Right now it is all stock. I would love to get a forced air something or other into it. Or even better, a turbo charger. However, I am not loaded.

Are there any poor man's mods to an engine to get it to go faster?

Thanks

black99

Talk to these guys, the have experiance with turbocharging 12a's...


http://www.mazdaracing.com/


also, you may want to look into importing a turbo 12a from Australia or NZ as I hear they are only about 650.00 u.s. I think they are actually fuel injected motors, but I could be wrong. But I also hear they are getting harder to find, so that price might go up soon. Again the guys at the site above should be able to help you out.

13BAce

If you're into making your own kit: Racing Beat sells a 12A header flange, along with 2" straight pipe and u-bends. You can use this to make a manifold. Then you'll need to add a wastegate, oil lines(water lines too if you choose a water-cooled turbo), and downpipe.

Cartech used to make a kit for the 12a. You could try finding a used kit.

13BAce

You'll also have to dump the stock carb if you go turbo.

What do you have on your car? My friend had an 84 with a 12a with headers, gears, etc., and it was REALLY fast.

SuperchargedRex

Check out the supercharger kit from Atkins Rotary Its designed to use a carb, so you should be all set.

jeremyriv

OK... WHERE in Australia or NZ can you obtain a turbo 12A for 650????? That is dirt cheap!!!!

A friend of mine came up with this really radical idea... I dunno if he was drunk or he dreamt it, but it kicks ***...

He used to race stock cars up here in Maine at a place called Oxford Plains Speedway. While he was there, he and some friends tinkered around with a device called the "Coffe Can Coolatta." It essentially is a coffe can placed somewhere along the fuel line. The fuel line goes into the bottom of the can, and comes out the top. Inside the can, you actually have a 3 foot section of brake line coiled up like a spring. One end is attached to the bottom fuel line, and the other to the top. There is enough room to stuff dry ice into the can. The end result is a 3 foot section of fuel line that is stone cold. So, it actually creates a dense fuel mixture so it burns better/faster.

Well, since the coffe can is WAY too obvious and just too primitive, he had been thinking about alternate ways to do the same thing... BINGO... we found it...

Run your fuel line (it will be a section of brake line coiled up like a spring) through you A/C condensor! This is actually right around the same temp as the dry ice, and it is completely inconspicuos! Now, of course, this is only in the prototype stage. So don't try it yet guys! I will be obtaining an extra A/C system soon so I have a spare to fall back upon...

I'll keep ya all posted...

13BAce

Summit Racing sells a part that does what you're talking about.

austin-7

I don't understand how cold dense fuel will help significantly. Remember fuel is a liquid so the molecules are already packed really tight in comparison to a gas like air. Now I would think that dense fuel would decrease the flow rate of the fuel making your fuel system work harder. Maybe if it's a really hot day, but how hot is your gas tank getting.

jeremyriv

Well, let me put it this way...

CHEM 101...

When any gas is at room temparature, it is not as volatile as it could be when it is at -50 degrees. The reason for this is that the molecules are not tightly packed at room temparature (also could be reffered to as gas-tank temp)

The tighter packed the fuel molecules are, the more efficient and cleaner they will burn! For example, instead of going the route of a "cold can" or "coffee can coolatta" as I call it, you could go with Nitrous Oxide. What this does is it freezes the air coming into the engine. It condenses the oxygen and creates a tighter bond between the molecules. When this oxygen is mixed with fuel and ignited, it burns better because there is more oxygen present than usual. This is why the rice guys with the Honduh's can wip our ***... that is if they are running this ****... and most of them are.

Also, dense fuel does not flow that differently from regular fuel. It's not like the difference between syrup and water or anything... But since the molecules will be better packed together, you would still be getting the correct amount of fuel, just in a smaller space... end result: more fuel, more air, same space... better and higher compression/horsepower... not TOO much, but just enough!

Up here in Maine there are no emission laws (partially thanks to my dad... he helped defeat them) and no laws regulating the use of Nitrous for street cars... but this is expensive stuff we are talking about... not something a college student can readily afford! So, I am going to attempt to run my fuel line through my A/C condensor. With any luck I should be wooping some 4 banger butt in no time!