My New Project Car - RC-Monster Forums

Takedown · **My New Project Car -** 03.24.2009, 03:38 PM

Hey guys. Went out and bought my first "project car" 2 weeks ago. My dad wont let me work on the 01 buick century custom so I had to have something else to work on.

Its a 1989 Saab 900S. Its in good condition but a week after I bought it I managed to crash it doing 15mph on black ice... So my project now is to fix up the front end before I slap anymore upgrades on to it. So far It has 2 1/8 exaust piping from the mani back, no cat, and a Cherry Bomb Turbo with a 4in tip. Im hoping that after I get the front end fixed up which isnt to bad that Im going to possibly go rally with it. From what I hear the its easy to get add power to the engine with simple upgrades and the tranny is pretty reliable. Let me know what you guys think.

Hockeyplaya20 · 03.24.2009, 03:58 PM

cant wait :D

Takedown · 03.24.2009, 03:59 PM

Im excited to start upgrading after I fix the front end.

lincpimp · 03.24.2009, 04:36 PM

Quote:

Originally Posted by Takedown

Im excited to start upgrading after I fix the front end.

Pics of the front end...?

We have a few body guys on the forum (cough cough) and they could give you a pointer or 2...

Takedown · 03.24.2009, 05:00 PM

I could get a pic or two of the front end tommoro. Thanks for the tip but its not to bad and is definately fixable by any means.

Takedown · 03.24.2009, 06:56 PM

Ive had this idea stuck in my head for awhile and im wondering if its possible. My idea is to buy a ducted fan with about a 70mm dia and a brushless inrunner motor suited to fit into the ducted fan casing that would be able to handle 12v nominal and a brushless esc that can handle the motor and 12v input. Then mount the ducted fan inside the intake tube. I would make a device so that it would only be activated 100 percent at 75 percent pedal throttle.

Arct1k · 03.24.2009, 06:58 PM

basically an electric super charger -

Takedown · 07:03 PM

Would the saabs current ecu try to cancel out the extra forced air? Most real turbo's/superchargers spin at around 100k rpm's so Id be happy with 60k-80k. This means Id need around a 6500kv motor.

MetalMan · 07:35 PM

The ducted fan idea won't work. I know from experience. A year or two ago I tried it with a 4" ducted fan with a Feigao 12XL and 24v 14Ah lead acid, running through a CC Phoenix 60 ESC. I even went as far as hooking up the ducted fan unit to my Camry's intake, along with a pressure gauge attached. At idle the maximum pressure it recorded was 1/2 PSI...

And if you did go with a higher RPM the ducted fan unit likely won't handle it unless you spend $200+ on it. For larger ducted fans they usually can't spin much faster than 30-40k RPM without self-destructing.

You are familiar with the design of a turbo, correct? It is a turbine, and designed to create pressure. The purpose of a ducted fan is to create thrust, not pressure. This is the main reason why this idea is not likely to work (unless you have hundreds of $$ to spend on really high quality stuff).

jnev · 03.24.2009, 07:32 PM

Saabs are awesome cars.

I drive a 1995 900s currently, and my dad owned two Saab 9000 Aero's previously. All performed perfectly their entire life.

Takedown · 03.24.2009, 07:43 PM

Im willing to spend a good amount to get atleast 2psi from it. If I get a blade with enough angle that will add thrust but intern slow the motors rpms. I think it may be worth a shot atleast. I may double the ducted fans aswell so that the one behind the first one will take all of the moving air from the first ducted fan and shoot it out even faster. 'higher kv motor for the 2nd stage ducted fan motor'.

Takedown · 03.24.2009, 07:46 PM

Quote:

Originally Posted by jnev

Saabs are awesome cars.

I drive a 1995 900s currently, and my dad owned two Saab 9000 Aero's previously. All performed perfectly their entire life.

I'm liking it so far. It has some good kick. 5spd stick ftw.

lincpimp · 03.24.2009, 08:54 PM

Quote:

Originally Posted by Takedown

Im willing to spend a good amount to get atleast 2psi from it. If I get a blade with enough angle that will add thrust but intern slow the motors rpms. I think it may be worth a shot atleast. I may double the ducted fans aswell so that the one behind the first one will take all of the moving air from the first ducted fan and shoot it out even faster. 'higher kv motor for the 2nd stage ducted fan motor'.

they already market these things. they are basically viewed as junk, and as metalman said they will not flow enough to create any pressure. if you want cheap thrills, blow 500 bucks on a simple 75hp nitrous setup. a universal zex setup should do. nothing cheaper, even if you fill the bottle fequently. and you do not have to live with the decreased mpg when you do not use it.

Takedown · 03.24.2009, 09:21 PM

Wont that totally fuk up a stock engine?

lincpimp · 03.24.2009, 09:38 PM

Quote:

Originally Posted by Takedown

Wont that totally fuk up a stock engine?

Nope, as long as the nitro and enrichment fuel are applied correctly is will be fine. A 50-75 hp setup would be fine for a stock motor. That is why I suggest the ZEX setup, pretty much idiot proof in its design and operation.

All nitrous does is contain more oxygen per unit volume than air. So it is the equivalent to supercharging (either with a blower or a turbo), except it adds oxygen by replacing the air with more oxygen rich nitrous, instead of compressing the air as a supercharger does.

More power takes more fuel, and the electric pre MAF blower units will only ever be able to max the MAF out so that it adds more fuel. If you force more air in than the maf can accurately read you will run lean and that is when engines go poof.