Contour Enthusiasts Group Archives Forums Modifications Duratec Performance best of: s/c or turbo

i posted a similar quesion about this earlier.. teh turbo is better for boost upgrade and gives you more power. but with a turbo you cant drive long distances it is bad for the engine....

ive been told a super charger is the best way to go so it has a little lag it wont kill your engine as much asthe turbo if im wrong my bad but this info has been filtered to me so i wasnt the first person that was wrong

Originally posted by svttour:
i posted a similar quesion about this earlier.. teh turbo is better for boost upgrade and gives you more power. but with a turbo you cant drive long distances it is bad for the engine....

Bad info dude,



ive been told a super charger is the best way to go so it has a little lag it wont kill your engine as much asthe turbo if im wrong my bad but this info has been filtered to me so i wasnt the first person that was wrong

More wrong info. Sorry...

Turbos with new technology (the kit I am working on) are made to go long distances, without damage to the engine. If anything, you might worry about the Vortech S/C causing excessive wear on the main bearing up front that spins the FEAD and S/C pulley.

Points well taken Rara.

As far as the seq. turbos, you are definitely right about the complexity of the system.

I see I also started something by the looks of the post about "twin turbo".....
answer:
Early 90's import sports cars were using twin turbos or sequential in the case of Toyota, in the hopes of reducing turbo lag.
The lag seems to be mostly caused by the need to accelerate a turbo from lower rpm at idle to much higher rpms like at full throttle. With the sequential system, I kinda described my understanding ofwhy they used it in the earlier post.
I believe the twin turbo systems were just trying to beat the lag problem by using two smaller turbines to provide the output of one bigger one becuase the smaller ones could be spooled quicker due to their lower mass.
I suppose you could use twins or sequentials, but as Rara pointed out the complexity is much greater. Cost is also an issue. There is another factor today about the materials. The materials used today (almost 10 years after the twin turbo nissan 300zx) are much stronger and allow turbos with less moving mass to produce outputs like older more massive ones.
warmonger

The issue of you cannot drive long distances with a turbo because its bad for the engine is pure BS! How do I know? Because since 1986 I have owned several turbocharged cars and I do drive them. I comute to work each day an average of a 100 miles,not only that but the wife and I love to travel several times a year. None of my turbocharged cars have ever blown an engine, Hell the only thing I have ever had to do to any of them is replace the timing belts and I do this about every 70,000 miles. I have one car right now that I bought brand new in April of 89 I drive that car everyday to and from work and it has made several hauls across country it has 186,000 miles on it, not one single engine failure to date. The only thing that has ever been done to the engine is replacement of the timing belts, I've done this 3 times in the life of this engine. Oh and I did replace the alternator, NONE of these problems were related to the turbocharger! :rolleyes:

Auto companies would not be putting turbos in stock cars if they were not somewhat reliable :rolleyes:

Hello...

I've been away for nine months so..... I see we have a turbo charger kit coming out soon. What are the expected costs AND will I be able to bolt this onto my 1995 SE? It ain't no good to me otherwise.

Paul

I already have one person with a 95 interested. I don't see why it wouldn't work. Send me your Name, Specs, and how much you would be willing to put down as a deposit. send to "chris@spazmail.com"

Thanks,

-Chris

Come on Chris,!!! bolt a tubo on a stock 95 ,with what mileage 85-95,000 ,lets be serious here!.No regard for engine condition etc etc...bit rash dont you think!

That's why I wanted him to send me more info on the car. High milage/older cars might be more frail for forced induction, yes. A tired engine won't be magically woken up with a turbo, if anything a rude awakening, and it will go back to bed angry.

Believe me, the last thing I want to do is say this kit will work for EVERY Duratec in any condition. There are many factors that need to be looked at before a modification like this gets done. On a case-by-case basis as well.

This isn't going to be just a box of parts that gets a shipping sticker slapped on. That's what Vortech does.

I appreciate the concern.

Regards,

-Just as a comparison- Don't flame please.
The late model Mustang crowd is getting away from S/C, now that T/C are becoming more available (and cheaper)now that people have figured out how to tune them. Electronics have given builders the tool they need to fine tune just about any complex turbo system. Pick up any MMFF,or 5.0 magazine and you'll see the fastest cars all are on turbo's with intercoolers.

With that said-

One of the biggest problems with S/C's is belt slippage. To combat the slip, they were running bigger drive belt's (6 and 8 rib) and/or cog drive, and cranking them down very tight which put enormous stress on the crank snout. Broken cranks and premature bearing wear, are common.

The other problem's with S/C is parasitic drag and compressed heat. After the initial Hit of $3000. for the S/C. $300. for injectors, $250. for fuel management, and $1400 for an Aftercooler to keep the heat down so you can run the higher boost levels "safely" you might end up with 50%-70% of the company's claimed horsepower gains. That's from personal experience-
I may be biased, but turbo's are more efficient when you tune them properly. ie Intercooler, fuel management,timing etc.

my opinion.