I am starting my budget build ghetto 12A squared project.

I am going to fit a 12A turbo from a Mitsubishi Starion, onto my BONE STOCK 12A carb fed 81 RX. I am beginning rebuild of carb soon, then it's gonna be a bolt and go from there. I plan on also running a stock 1g intercooler from the 1 gen. Any place where I can core a super cheap Exhaust manifold to fit the TDO4 housing? The whole goal of this project/car is to do things as cheap as possible, and to test new Ideas on. I scored my beast for 100 bucks and am not too concerned if it dies, because me and my partners look forward to learning how to put the rotarys together. SO there ya have it. The ultimate noob cheap *** adventure! I am going to shock the community with my DSM'isms. This will be the duck tape turbo kit if you will. I will post more later, with plenty of pictures of my probable failure, or strange ghetto sucess. Any Ideas are welcome, just dont be a hater!

 

I can see your going to run into many problems. First off, the starion turbo isn't going to be able to push much more than 8psi of boost into the 12A, and even that may be pushing it. Also, the carb has to be properly prepped if you going to be using a blowthrough type of system. If its not properly prepped, you'll collapse the floats and most likely have leaks everywhere, not to mention they are a bitch to tune properly. You also have to lock the distributor at 10* advance or something like that to prevent detonation. For the manifold, there isn't anything for the 12A. Mostly its just taking stuff from the S4 and S5 TII engines and adapting it to the 12A. From the sounds of things, you have a lot to learn.

 

thats the idea. Im not lookin for a monster. 8psi would do fine. Ill advance the motor, and I am probly gonna make a custom exhaust manifold. Ill look into the prep for the carb for the blowthrough system while I am rebuilding it.. thanks for the input!

 

Look up Robert from RotaryShack.com. He is the person to talk to about boost prepping a carb. He is 680RWHP on the forums I believe.

 

While you are at it you could try a draw through carb and avoid several issues.this would limit you to 7-8 lbs boost (or maybe 12 with water injection) You could also experiment with stronger springs on the centrifugal advance to flatten the advance curve instead of just locking it. The Starion turbo aught to be OK for this much boost, or a Garret from a TII 2.2 MOPAR. Good luck with the project.

 

What's this "Stock 1st gen intercooler" you talk of? We don't have intercoolers... we have radiators and oil coolers, but no intercoolers.

You'll definitely need to have the carb properly boost-prepped to say the least. Open the dizzy up and take the springs out (you can tack-weld the ***** full advance if you want to be sure, but as soon as the engine starts moving they'll jump to full-advance without the springs). Leave the vac diaphragms open to air and time it like that, so that you don't get any unexpected advance.

Then go ahead and ghetto up the exhaust, intake, intercooler, etc...

Good Luck. You're gonna need lots of it. Do some searching to learn about turbo projects. I don't know **** about them and I already have these suggestions for ya!

Jon

 

if your doing this on the cheap ghettoness just build a box around your entire carb to equalize the pressure instead of boost preping the carb.

 

He might be talking about the stock intercooler on the 12a turbo'd engines. The ones that sit on top of the engines like the Sti intercoolers.

 

i have a cartec set up is a draw through that comes with a holley 600 this set up is water cooled so no itercooler and the set up also includes the down pipe oil lines oil pan and everything needed for it , this set up was made for the 12a . all you have to do is adjust the timing and you can check your fuel to air ratio with the provided o2 sensor and you should be on your way, i have it for sale if you interested let me know. asking price for the whole set up is 750 plus shipping.

 

sorry I should have specified by 1gen I mean 1st Gen DSM, its from a talon TSI. So is most of the flex piping I will be using. Im gonna look at rotary shack for the blow through help, and search some more on the forum. I dont know how the carb works, but I intend to find out as I rebuild it. Thanks for the comments, at this point, anything is helpful! Any Ideas are also welcome, like that box around the carb. I guess I need help on understanding the whole blow throgh idea, and how building a box around the carb will fix it possibly? but yea thanks for the replys!

 

by box are you refering to a plenum , or carb hat/plenum

 

im sorry to say from the sound of your comments you have much to learn, i will do a hole lot of research before undertaking on this , unless you have money to trow away and if you do ill take some, cause my friend the way i see it you will be spending some money once you blow up a couple of engines. do a research ample postings here on 12a turbo setups good luck with your project.

 

The 12AT did not have an intercooler as stock. Later a few modded 12ATs had custom FMIC when they went higher boost but it never was a factory part.

 

by box i was refering to building a box around the entire carb instead of boost preping and carb hat. i do not know if it works, just thought i had heard others talking about it a while ago.