Well, hollow you bring up a good point. If you think about it a turbo won't be any less "safe" than a supercharger. Boost is boost man. If you ran a turbo at 4.5psi like the Alpine unit for the Delta, when properly installed it will not be any more dangerous (assuming all the details were worked out in the engineering of our hypothetical kit).

Key word is "properly" here. In my opinion it is much easier to obtain a "properly installed" status with a roots type s/c than most bolt on turbo kits. Usually less components involved.

As far as around town drivability, a roots type s/c has a more linear boost profile than turbocharged engines which should give you on tap boost 24/7.

I don't think a turbo kit when installed right is going to any worse than a super charger. It's just that it takes more cuss words to get turbo to the "installed right" status (in my opinion)!

 

I would have to slightly disagree with you koreandude. A rather small turbocharger running only 4-5psi is not going to have hardly any lag if any at all. Especially for the fact that it'll be on a v6. A lot of talk about turbo lag is myth unless you get into a t3/t4 running 30psi or something. Another reason I prefer turbos over SC is that a SC runs off the crank and aborbs power to create power. A lot of SC from what I've heard use about the same amount of power as an air conditioner. A turbo runs off exhaust fumes though. Thus creating more power off an otherwise worthless by-product of your engine.

 

aww man...I told random I would not get envolved.


Well lets face it...unless you put a big noisy BOV on your turbo. no one will know you had it.

A s/c has a distinctive whine, people will notice this.

Noe even thou the alpine s/c is a good design and has cooling abilities.

A turbo will tend to be more safe. based on the fact you can slap in a nice huge front mount intercooler.

boost is boost, niether is more reliably/safe.

Turbo technically requires more maintence.

If turbos were not reliable, then why would mazda, subaru, mitsubishi, ford, chrysler.

sell turbo cars?

 

I know that there are more bolt-ons avalable for the turbo kit, but (from posts) people that have exhausts, intake, SC, and headers are running low 13's. I would like to go in the mid-to-low twelves and still drive it on the weekends. I don't like the idea of a turbo taking time to spool, I want imediate power. Most of my "races" are stop sign to stop sign so I don't get a full quarter mile to wait for a spool. I just want to know people's opinions and what people think about the positives and negatives of both a SC and a turbo.

 

Well, alot of that depends on how you launch your car.

I mean... Look at it this way. A turbo is technically better.
5 boost is 5 boost.

Now a supercharger makes power with 5 boost plus it creates a parasitic draw.

Turbo creates 5 boost without this parasite.

So in theory. you should have more whp from a turbo system at the same boost level.

You also have more are to work with on cooling the charge down.

Intercooler + N20 cooling , etc

Supercharger you could do water injection. YOu thank alpine for the water cooling built into the s/c. Most do not come as such. Thats quality thought they put into practice.

Now on 5psi. If you were running say twin turbo t25 units.

They would be be spooled up at 1k-2krpms for 5psi

course you would probably start losing hp around 5-6krpms. But I think the s/c is similar deal.

 

hmm that really doesn't mean much especially if it's a small V6. Exhaust pulses will be much stronger on a large say 2.5l I4 than a 2.7l V6 due to the fact that there are less exhaust ports dividing the pulse widths on the 4 cylinder. Of course for the sake of argument that we have equally efficient manifolds on both the 4 and the 6.
come on....I think that statement is a little exaggerated buddy wink
I agree with you 100% but my post earlier was just to exemplify the more complications most people encounter with turbo systems (not to to mention the high maintenance as shaddoh has said) and how the s/c aside from the cons, do have one major pro....plug (well, bolt) 'n play.

 

I do agree with you about the bold and play Koreandude but I think once you've got a turbo tuned well/perfect it can be more rewarding then a SC. It takes work to get it there but everything done right takes work.

 

Im going to recomend this two books recomended by Random i have read one of them and it is vary informative and suggest you all do the same the first one is Maximum Boost the second one is Supercharged! both those links will take you to amazon where you can get the books as well. I can say this Maximum Boost made me change my mind about turbocharging my 400cid V8 pontiac block just cus its more work to get it all dialed in and do all the manifold work.. just keep these things in mind read read read and then ask questions... you see how many posts i have and i have followed this board for some time now. oh and another tip use the search feature built in to this sight there is a lot of jack offs that will post up the same questions over and over where if they searched they would find that the question has already been addressed. i have put more than my .02 cents into the bank today... and just remember its ok to be ignorant but don't be stupid

 

Thanks everyone for all the fun forum reading from this topic, but it seems like things got a little out of control over someone making quick rash statements. No flame intended but i think someone..aka hollow, saw fast and the furious a few too many times and and decided he would read SCC and Turbo magazines until he had a lil bit of lingo to come in here and post. I have had questions i needed answered but i quietly and descretely(spell chk?) emailed random and asked but seriously unless you are an expert on a subject please for the sake of my reading pleasure just ask a question and let the people who do the work and the research field the answers while the rest of us point and laugh while secretly waiting for the answer so we can feel like we knew that already. Anyhow thanks everyone this has been fun...boost isn't always boost????... but B.S is ALWAYS B.S.

 

and with that...we'll call this topic closed.