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Old 07-26-2002, 05:52 PM   #1
ferretboy
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Default NA Vs. Turbo

Okay, here is the question that I pose to you guys and gals. What are the advantages in your experience with NA vs. Turbo.?
I know that you'll spend a lot more gettnig a car to make the same power NA vs. turbo, just wondering why go NA? Oh yeah, no nitrous either. Thanks for your thoughts.
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Old 07-26-2002, 06:06 PM   #2
Julian
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If you had unlimited funds, there would be no detriment to going turbo. It all depends on your priorities, what you want from the car/engine, and how much money you have. You can realize some of your goals within normal means.

Staying N/A is simpler, less effect on emissions/legality, generally more reliable, etc. All depends on how you do it, see: How much money do you have?
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Old 07-26-2002, 07:22 PM   #3
ciper
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?? I always thought it was a crossing curve. To a certain point an NA would be cheaper (say 2.5 liter running 240hp) then afterwards the turbo becomes WAY cheaper.
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Old 07-26-2002, 07:58 PM   #4
ferretboy
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HMMMM Keep it coming guys. Basically thinking of going for something in the 200hp range. I've seen the prices (cobb cams, heads, headers, pulleys) about 4000.00 turbo kit (4000.00) so mainly more reliability and simpler too?

Last edited by ferretboy; 07-26-2002 at 08:06 PM.
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Old 07-27-2002, 12:58 AM   #5
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i'm not a subaru guy, but i've changed a few spark plugs so i'll take a stab at this...
there are 2 ways to go forced induction (excluding N2O)

the right and expensive way

or slap it on

i don't think many people realize that when you are running 8# of boost or more, YOU NEED TO DO MORE THAN BOLT ON A BLOWER if you expect this thing to last and work well. A blower/turbo cam, forged internals which usually implies a rebuild which implies even more money. A bottom end alone for a CORRECTLY built blower/trubo motor will cost you thousands before labor costs. and thats not even counting the labor costs!
Now add the blower/turbo, the cam(s), the lifters, rockers (if applicable), labor, intercooler, guages, tuning etc....

or you can be a ass-clown, bolt on a blower and be cool for 25k miles...

also all things being equal, a NA motor lasts MUCH longer... thats not to say a FI motor won't go 130k miles if built CORRECTLY


My camaro costed me well over $5k with the tranny rebuild (not including rear end) and I didn't have to pay labor. I can barely handle 4# of boost with my forged pistons and billet connecting rods. my crank isn't forged so thats a problem. my cam also has a small LSA so its not going to be that great for a blower either. and damned if i install a turbokit on that car...
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Old 07-27-2002, 05:32 AM   #6
US2JDM
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I was just talking this over w/ lethargicman the other day...I personally think the N/A route is a great way to go. You're gunna spend dough either way, but with an N/A motor done right you'll have some good 'pull' all the time (no waiting for a turbo to spool-up). There's a lot less that you'll have to worry about too just sticking to N/A. If you DO want to pour in some serious $$$ you could go crazy and get some serious head-work done...upgrade valves, more aggressive cams, up the compression some. I was even thinkin' individual throttle bodies sitting under some velocity stacks.

Just a few ideas...I've got a million of 'em

Word.

-Milan
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Old 07-28-2002, 12:28 AM   #7
ImprezaTs
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wow good info... what does basic NA consist of other then I/E/H, pulley?
I prefer NA setup too since its a lot less maintenance hassle and thinking of going down that route soon.
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Old 07-28-2002, 02:51 AM   #8
HURRY CURRY
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n/a is great coz the power is there when you need it and not some sudden burst of power that 99% of people driving subarus dont need. all i have is exhaust and i removed the vent covers on my hood and im fine. my suspension is pretty decent as well which makes an impreza much more fun to drive than any turbo or high horse power bull...
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Old 07-28-2002, 03:11 AM   #9
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I like N/A cause of the weight distribution and the EJ25 cause of the torque coming out of low speed corners (autocross)
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Old 07-28-2002, 03:16 AM   #10
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Quote:
Originally posted by Julian

Staying N/A is simpler, less effect on emissions/legality, generally more reliable, etc.
I tend to disagree. From what I have seen, it is much easier to pass emissions with forced induction than with going N/A (using cams and such). The visual may be harder but definetly not the sniffer test.

Eric
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Old 07-28-2002, 04:34 AM   #11
US2JDM
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Quote:
Originally posted by Imprezinator


I tend to disagree. From what I have seen, it is much easier to pass emissions with forced induction than with going N/A (using cams and such). The visual may be harder but definetly not the sniffer test.

Eric
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