Well, the drag strip comments was made for a rather complicated set of
assumptions that I should have elaborated on.
The turbos can far exceed your engines ability to take the cylinder
pressure. However, the stock engine maybe able to stand this much power
for short blasts down the drag strip. If you had a setup with adjustable
boost then you could lower it for street duty and survivability, but then
turn it up for drag duty. When you did you'd probably want to run racing
gas (unleaded if you still have cat(s)).
I've seen the 2.2L fours take ungodly amounts of boost (I witnessed 24lbs
on several occassions) on the drag strip with proper precautions (extra
fuel, timing adjustments, forged pistons with lower compression).
It's always been my opinion that a heavy vehicle used in all around
performance street driving is much better off with a SC.
By the way, you should get superior mileage with a Turbo setup since the
boost is generated by exhaust and not the crank. Another reason, turbos
were so popular on small fuel efficient 4 bangers.
There is absolutely nothing wrong with the twin turbo setup for the street,
as long as you understand that the big boost numbers that are advertised
are simply not smart with a stock street driven 3.9L. As such my view is
that its overkill for most people considering it. The SC setups will work
for most everybody on the street. And the truth is, Nitrous is a cheap
option in MODERATION for those wanting to experience just a limited amount
of playtime.
And of course, if the twin turbo setup is price competitive with the SC,
who cares if it's overkill and you can only use a small portion of the
boost possible? But usually a custom twin turbo setup is much more
expensive. Doesn't hurt to express interest and let them price it out!
Steve Ekstrand, Pasadena, CA Driver: '00 Dakota CC SLT+ 4.7L 3.92SG 255's
and Shelby Lancer #485 ---The Boost Monster! With a blown trans... :-(
Stacey's Driver: '00 Inferno Red Intrepid ES-3.2L-24V Autostick w/Leather
Race Car: 69 1/2 Road Runner 440-6 (ex-NHRA SS/GA future B or C/SA???)
Project Car: 69 Barracuda Notchback (Orig. 318, now 360w/Edelbrock Heads)
Homepage: http://sites.netscape.net/professormopar/homepage
----- Original Message -----
From: "hoegen" <hoegen@kersur.net>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, April 26, 2000 12:55 PM
Subject: DML: Re: Re: Re: Re: SciTeck-twin turbos (Jason)
| OK Steve, so what I am gathering by your statements is that the twin
turbo s
| are designed for those V6ers who are dedicated to the drag strip, not
those
| of us who are lookin for more power off the line (and more) for those
| "street" situations.
| My V6 like many others, is used exclusively for street use, so I'm
guessing
| that the Twin-Turbos are NOT what I nor other street users should be
| considering?
|
| Thanks for the responses
|
| Kevin Hoegen
| http://www.kersur.net/~hoegen
| 99 Dakota Sport 2WD V6 CC Solar Yellow
| S/T Graphics/20% "removable" Tint
| K&N "home-depot Black PVC" air intake/Quick-D TB ...in the mail!
| Black AR-767s with 255/60s
|
|
| -----Original Message-----
| From: Steven T. Ekstrand <cyberlaw@earthlink.net>
| To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
| Date: Wednesday, April 26, 2000 3:39 PM
| Subject: DML: Re: Re: Re: SciTeck-twin turbos (Jason)
| ..........
| >So the short answer is that a twin turbo setup will probably kick an SC,
| >BUT!!! You can't simply slap major boost on a stock 3.9 (or nearly any
| >stock engine). I really couldn't imagine putting more than 8 psi
through a
| >stock 3.9. I know I'm pretty conservative, but for most of you I doubt
if
| >you're really looking for dedicated drag toys. For 8 psi, twin turbos
is
| >major league overkill!
| >
| >Now if somebody wants to completely rebuild and modify their 3.9, then
you
| >can have some serious fun with a twin turbo setup!!!
| >
| >Steve Ekstrand, Pasadena, CA Driver: '00 Dakota CC SLT+ 4.7L 3.92SG
255's
| >Stacey's Driver: '00 Inferno Red Intrepid ES-3.2L-24V Autostick
w/Leather
| >Race Car: 69 1/2 Road Runner 440-6 (ex-NHRA SS/GA future B or C/SA???)
| >Project Car: 69 Barracuda Notchback (Orig. 318, now 360w/Edelbrock
Heads)
| >Homepage: http://sites.netscape.net/professormopar/homepage
| >
| >
| >----- Original Message -----
| >From: "Chuck Robbins" <intense99dak@home.com>
| >To: <dakota-truck@buffnet.net>
| >Sent: Wednesday, April 26, 2000 11:50 AM
| >Subject: DML: Re: Re: SciTeck-twin turbos (Jason)
| >
| >
| >| I'm still learning about all of this and there are a lot of
| >| other membrs who could explain better then I can, but ...
| >| This twin turbo set-up (for v6's) involves two sequential
| >| turbos. The first kicks in with low rpm's and the second kicks in
| >| with mid to high rpm's. Therefore virtually eliminating any
| >| turbo lag.
| >| How do they compare to a supercharger? First and foremost
| >| the supercharger is a lot simpler to install & maintain. I don't
| >| know specifics, but that is the impression I've gotten from the DML
| >| and a few others. As for horsepower & torque, I'm inclined to
| >| say the the twin turbo set-up will blow the doors off a supercharger.
| >| I know that this leaves a lot open and I'm hoping someone with
| >| more knowledge steps in. I have yet to talk to Sciteck personally,
| >| so there are a lot of unknowns in this.
| >|
| >| Chuck Robbins
| >| '99 Dakota Sport
| >| http://www.members.home.com/clrobbins/dakota.htm
| >|
| >| > What are twin turbos and how do they compare to a supercharger?
| >| >
| >| > Jason
| >| >
| >| >
| >| > > I just received an email from Sci-Teck saying that pricing
| >| > > is going to take another week or so. I guess they would like
| >| > > to see a few more people at least interested in the turbos.
| >| > > If you are interested, give them an email at
| >| > > SciTeckMiami@aol.com You don't have to committ now, just
| >| > > "show an interest".
| >| > > Hopefully there will be a few more interested people as I am
| >| > > really looking forward to having the turbos on my Dak :)
| >| > >
| >| > > Chuck Robbins
| >| > > '99 Dakota Sport
| >| > > http://www.members.home.com/clrobbins/dakota.htm
| >| > >
| >| > >
| >| > >
| >| >
| >| >
| >| >
| >|
| >|
| >
| >
|
|
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