71plymouth

I have always wondered how to determine which turbo is right for your engine. Can anybody explain or point me in the right direction? I was thinking more on the lines of my 83 12a and my 71 duster. I would appreciate all help.

z-beater

^^^It really depends what you want. But the single turbo section would probably be more helpful.

What are your hp goals?
When do you want to reach full spool?
Porting?
What boost?
How much money do you have?

There are tons more questions...

84stock

iTrader: (5)

Small turbo, little lag and good midrange. Comparable to a supercharger but without the parasitic loss. Big turbo, more lag, explosive top end , much more top end than a supercharger. (potential to really "push" you into the seat)

No_Rotor_RX7

stock 12a use a stock TII turbo. the motor simply won't flow enough air to need anything bigger. if you get a streetport then go with a TRUE 60-1 and you can make 400rwhp and have hardly any lag.

but as said... all depends on what you really want.

REVHED

The proper way is by looking at the compressor maps of various turbochargers.

This is done by calculating the airflow requirements of the engine for your hp goal and then making sure it lands you in the meat of the efficiency range of the turbo for your specified boost pressure.

71plymouth

I don't have much money and don't plan on racing. I am looking for power and efficency. I would like to yank one out of a junk yard and make 100 hp from it. I don't know about boost psi or spool. I guess spool in low rpm range like idle - 3000. Low boost psi so I don't have to try and figure out how to change the comp ratio on the engine. I wll probably do this when I rebuild the 12a and probably street port intake and exhaust. Also not looking to lose any gas economy.

Naegleria_Fowleri

If you port the intake and exhaust, your gas economy is going to decrease as it will take more fuel to the engine. Also, you're not even sure what you want yet - do lots and lots of research before saying "I want to turbo it with a street port" You've no idea the mess you are getting yourself into, so before deciding on something research, research, research, research. Luckily this forum has tons of information on it, so search the single turbo section, search this section, search the second and third gen sections even.

71plymouth

I am not looking to do a damn search. I am looking to recieve input. I do know what I want but lack information. Its obvious that porting will reduce the gas mileage but how much. I also know oabout the FAQ's and doing searches in the forum but I don't have time for that. And like I said I am looking for info in the specifics. Besides if your just going to say do a search don't waste my time and especially yours. Its like saying "hey man should I stick my hand in the garbage disposal and flip this switch", and your dad says" I don't know, should you". Give me a fricken break.

trochoid

iTrader: (6)

There are many options/routes that one can go when doing a turbo upgrade. However, not posting goals and the 'I don't have time to search' attitude is not going to get you far.

With that said, a 2nd gen turbo is probably the easiest to do. The rest is up to you.

71plymouth

This is exactly why I go to anger management

REVHED

Maybe you should go more often.

REVHED

Seriously though, by the sounds of it your best bet would be to rebuild the 12A and do a blow through turbo using a TII turbo and Weber carby. That's all you're getting. You'll find more than enough info by clicking the search button.

trochoid

iTrader: (6)

Why, did you find my post offensive. Not looking for a retarded internet fight, but I posted politely and factually as how things tend to work here and gave you a very simple path to follow for your upgrade.

Fwiw, I had a 71 Road Runner, bought it used in 73. One of the best and most fun cars I have ever owned. Unfortunately, between being married, putting the ex through college, having 3 vehicles and the gas crunch, it was replaced by a new 75 Civic. Still wish I had the car, it would be worth many times what I paid for it now.

As a side note, I have done extensive reading on multiple 7 and rotary related forums. This has given me a fairly decent knowledge base and allowed me to help others on the forum.

I am more than willing to help others whenever ever I can, if I have knowledge on the particular subject. Doing so has given me a fair amount of respect here and a good deal of satisfaction. The more I learn, the more I realise how little I do know and still need to learn. I even help the 'wankstas', and members with attitues, to a point

wecycle

check out
http://www.turbofast.com.au/tfcalc.html
You will need to plug in factors that give you the right engine size, then it will give you a suggested turbo flow rate.

71plymouth

thanks for all help guys, and Trochoid I wasn'nt bitter towards you. Besides how can you tell if someone has an attitude just by reading what they typed. Its not like you can hear them talking.

-xlr8planet-

iTrader: (3)

I have a N/A 7 and a Turbo Civic...
"Slapping" a turbo is not as easy as it seems.

If you need to ask, probably is not for you.

That said. Get a compressor map. If you dont know how to read it.... probably this is not for you, unless you wanna spend the next couple of months bench racing.