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Centrifugaly supercharged Duster
https://slantsix.org/forum/viewtopic.php?t=42706		 Page 1 of 2
Author:  wicked/six [ Fri Nov 26, 2010 9:52 pm ]
Post subject:  Centrifugaly supercharged Duster
Well maybe...

Since my Engine is apart i have been throwing around ideas. I have a set of Arias forged pistons with a piston deck height that is .130 taller than a stock piston, all thing being the same in my engine now would put me at 10-1. I am Running the Erson 270 FYI.

Now i also have a head that has not been shaved and would drop compression probly to low nines-1.

The Question is are these number so asstronomicly high for the 6 or so psi i'll get out of supercharger? I want a fun car and i'm not afraid to put in the work to get it running well, i just feel with the lower boost i can play with the higher compression a bit let me know if im just thinking to much :roll:

With the 30 over stock piston and 8-1 comp and the supercharger, Nitrous as well startes to creep into my mind :twisted:

Tristan F.
Author:  GENT [ Fri Nov 26, 2010 10:57 pm ]
Post subject: 
You can get away with 10-1. Just keep it below 8 psi. and watch your timing. Also think about meth injection
Author:  Fopar [ Fri Nov 26, 2010 11:22 pm ]
Post subject: 
Triston what kind of fuel are you willing to run? Is it going to be street/track driven or just track?

Richard
Author:  wicked/six [ Fri Nov 26, 2010 11:44 pm ]
Post subject: 
Street/mostly track. We have a station that has Amco 110... Pump friendly would be nice but i want to start pushing the limit a bit...

Im looking into the Meth Injection if i can keep it at 91 or so octane i'm diving in to the 10-1 set up.

Will have O2 bung welded in to header before i fire it.

TF
Author:  emsvitil [ Sat Nov 27, 2010 12:35 am ]
Post subject: 
A centrifugal supercharger doesn't give you much boost at low rpms.............
Author:  wicked/six [ Sat Nov 27, 2010 12:50 am ]
Post subject: 
Niether does a turbo........till it's spooled then its good.

I'd rather have a predictable launch. Slow is good....but then again could pully it to boost up quicker. I'm not going to be the guy waiting at the green light cause the boost guage isn't up yet....turbo...
Author:  GENT [ Sat Nov 27, 2010 1:16 am ]
Post subject: 
Unless you use a really big turbo built for the most top end power,the lag is not going to be that bad. Not to mention you can build up boost by holding the brake and giving it a little gas,so you leave the line with 5-10 psi of boost.
Author:  wicked/six [ Sat Nov 27, 2010 1:42 am ]
Post subject: 
Yea i know. but in a game where .001 can loose i want the car to be kind of consistant, and the centrifugal will play into that. Slant racing is bracket.... :lol: Hey Gent were you building a supercharged car a while back?
Author:  1974duster kev [ Sat Nov 27, 2010 7:59 am ]
Post subject: 
ryan, turbovaliant coms off the line at like 18psi i think. Centri suercharger will look cool and perform awesome good work man get some pics up here i'm curious.
Kev
Author:  GENT [ Sat Nov 27, 2010 12:33 pm ]
Post subject: 
Quote:
Yea i know. but in a game where .001 can loose i want the car to be kind of consistant, and the centrifugal will play into that. Slant racing is bracket.... :lol: Hey Gent were you building a supercharged car a while back?
That is true!

I was not building one personally,but I was helping a friend build one. 360 in a 78 dodge truck.
Author:  wicked/six [ Tue Nov 30, 2010 2:24 am ]
Post subject: 
Some pics for now...
Image
Image

Old pics but should have some new up soon...


TF
Author:  wicked/six [ Thu Jan 27, 2011 12:02 am ]
Post subject: 
Ok so small steps so far, I have got the lower end buttoned up and it puts my compression at 9.25-1 with the uncut head.
Image
Image

Also got the 2bbl 500 to index for boost. Getting close to running! I hope..

TF
Author:  Fopar [ Thu Jan 27, 2011 8:08 am ]
Post subject: 
Triston, it looks good.
How are you going to handle the timing with the boost?

Richard
Author:  wicked/six [ Mon Jun 20, 2011 12:07 pm ]
Post subject: 
Alright i have got the engine together and will have it in the car within the next few days. I will be running it NA to get it smogged and registered so i can drive it. I still have to get the pullys worked out and the carb has some clearance issues with the spacer i have so it will be a little bit before it will see any pressure.
Image
Image

It will be pretty tall with the carb hat and all the plumbing, hope i don't have to cut my hood!

TF
Author:  Fopar [ Mon Jun 20, 2011 1:15 pm ]
Post subject: 
Triston, Why do you need the spacer with boost??

Richard
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