6pakattack
Well-Known Member
No it's not a MOPAR,but it still WTF over the top !!!!
[ame="http://youtu.be/3EaCnDCsslM"]302 Found[/ame]
[ame="http://youtu.be/3EaCnDCsslM"]302 Found[/ame]
Well I'm going to jump to jump on the Hate Wagon!
NOT because it's a Chiv but, well, i just don't get into the all that Show and no Go......YEAH IT WILL GO, but not while he is the owner!!!!! and if that's the case, why turbo+blower+ + nitrous!!!!! I bet he has never wound it up to full rpm and if he has, i bet it was a 30 mph burn out with only the tires seeing the 160+.......no he hasn't even done that! Afraid of chipping his paint job!!!
And one more thing! twin turbos.... Ok...... blower....Ok but the pluming is not going to work!!!!!!!!! Come on! the blower butter fly's open and then what.......the turbos BLOW OUT THE BLOWER HAT!!!!!! The only boost is coming from the blower.
And if all my rant is even close to right........I don't need to even start with the full one nos set up that will ALWAYS HAVE "UN FILLED BOTTLES."
Yes if i was going to a car show and seen this car i would say WAY WAY COOL!!!! but the I HAVE NEVER DRAG RACED IT AND NEVER WILL JUST PISTed ME OFF.
GRRRRRrrrr ok rant over:director:
You actually looked that close at it?? It sort of reminds me of that GTO on facebook with the 3 roots blowers on it....will look for a picture....Ok i took a 2nt look, them are the turbo inlet tubes not the boost tubes going to the hat My bad:violent1:
That butterfly up top has to be sealed off from the blower and it is only taking the place of air cleaners/air intake to the turbo's. The boost from the turbo's are going in under the butterfly deal.
In theory I don't think you would need blow off valves on the intake tract with a set up like that. Let off the throttle and all air is cut off from entering the turbo?
Also are the blow off valves hooked to the wrong side for vacuum to activate them? Shouldn't they be under the Carb butterflies for them to activate.?
That sure look like throttle linkage up top of the hat/butterflies.
Hmm well it still could work.................... if the hat is divided into two sections. butterfly/top is intake air for the turbos and divide floor separates the bottom half of the hat. Were the blower pulls air thru the top hat, through the turbos and the turbos push through the bottom part of the hat, though carbs and then into the blower. Does that make sense? that way the blower could pull air when the turbos were not boosting. and why it would need the function of the butterflies.
You would have a huge boost leak like that. The air produced by the turbos has to enter the same place above the carbs. The turbo air entering the engine has to be totally sealed. If not you got a boost leak. So all air into the engine would need to come from the turbo outlets that enter at the back of the manifold above the carbs.
So with the way you are explaining once you cracked the butterflies you would instantly have a boost leak. Plus the blow off valves are constantly pulling vacuum keeping them open bleeding off the boost the turbos are creating the way he has it plumbed.
Very complicated funky set up. All for show and no go.
Ok i didn't explain it vary well and i have look at it again. this is how i see it. The hat/butterflies is just that. only it don't go down to the blower it simply goes into the turbo intake piping,(back side of hat) threw the compressor of the turbos and then plumbed under the hat (the alu box under the blower hat). this alu box is sealed to the carbs and then enters the blower.
So the blow off valve could still be working properly, Right......
Basically he could have installed two cone type air filters directly to the turbos and eliminated the hole blower butterfly/hat and piping all together.
Would have help seeing over that monster as well!!!!
I remember there was a guy in the early '80s I think named Rick Dobbertin (?) who built a twin turbo'd and supercharged early Nova. I think the show name was "InNovation". It actually ran and was reasonably thought out.
Here's a link..
http://www.dobbertinhydrocar.com/Nova%20SS.htm
If your interested and want to read the hole thread it is hereSo if your turbo has a pressure ratio of 2.0 (14.7 psi boost), and your supercharger has a pressure ratio of 1.4 (5.9 psi boost) you get a total combined pressure ratio of 2.8 which is 26.5 psi, not 14.7 + 5.9 = 20.6 psi.
So expect to see 14.7 out of the turbo, and 26.5psi out of the supercharger. The supercharger will work A LOT HARDER with much denser air being forced into into it.
The best way to handle this is to just run your wastegate sensing line off the total combined boost, and select a wastegate spring for whatever total boost you finally decide to run. Boost will quickly rise to that pressure and stay there over a very wide Rpm range.
If your exhaust housing originally produced full boost at 4,000 Rpm with just the turbo, expect full boost at more like 2,000 Rpm with twincharging. I am not kidding. You will definitely require a larger a/r exhaust housing, but try it first and see.
The whole thing will be far more responsive and have a much lower turbo boost threshold than you are probably expecting. But the top end power will still be there.