SC400 Twin Screw Supercharger Project In Development
02-03-11, 02:28 PM
#1
SC400 Twin Screw Supercharger Project In Development
Look what showed up on the front porch today!
Lysholm 2300 twin screw
Me and a friend of mine, Thane, are working on a separate HTD style blower drive similar to what Lextreme member Hypronet, Kevin Deane, used on his 3.3 liter twin screw setup.
The plan is to get it running on 6.5psi to start with, then add water/meth, stand alone, fuel system and then go for 12-15psi down the road, but I'm only focused on 6.5psi for now and get it on the road and enjoy it. We estimate that a 1.2:1 drive ratio will yeild 6.5 psi with this setup.
Thoughts, impressions, quesitons, I can't really think of what else to say right now.
Lysholm 2300 twin screw
Me and a friend of mine, Thane, are working on a separate HTD style blower drive similar to what Lextreme member Hypronet, Kevin Deane, used on his 3.3 liter twin screw setup.
The plan is to get it running on 6.5psi to start with, then add water/meth, stand alone, fuel system and then go for 12-15psi down the road, but I'm only focused on 6.5psi for now and get it on the road and enjoy it. We estimate that a 1.2:1 drive ratio will yeild 6.5 psi with this setup.
Thoughts, impressions, quesitons, I can't really think of what else to say right now.
02-03-11, 04:16 PM
#4
The manifold will set you back around $1500 and can be landed in the US in 3-4 days.
The twin screw charger(whipple/lysholm or KenneBell/Opcon) will set you back ~$1200 used to $2000 new.
You then need to fabricate or adapt a rear inlet manifold to mount the throttle body and bypass valve to. Modify the top plate of the manifold to suit the supercharger of choice, and lastly figure out a pulley system to drive the blower. You can figure another 1-2 thousand for this.
There's a used bolt on whipple setup for sale right now for $7000.
The twin screw charger(whipple/lysholm or KenneBell/Opcon) will set you back ~$1200 used to $2000 new.
You then need to fabricate or adapt a rear inlet manifold to mount the throttle body and bypass valve to. Modify the top plate of the manifold to suit the supercharger of choice, and lastly figure out a pulley system to drive the blower. You can figure another 1-2 thousand for this.
There's a used bolt on whipple setup for sale right now for $7000.
02-03-11, 04:20 PM
#5
The manifold will set you back around $1500 and can be landed in the US in 3-4 days.
The twin screw charger(whipple/lysholm or KenneBell/Opcon) will set you back ~$1200 used to $2000 new.
You then need to fabricate or adapt a rear inlet manifold to mount the throttle body and bypass valve to. Modify the top plate of the manifold to suit the supercharger of choice, and lastly figure out a pulley system to drive the blower. You can figure another 1-2 thousand for this.
There's a used bolt on whipple setup for sale right now for $7000.
The twin screw charger(whipple/lysholm or KenneBell/Opcon) will set you back ~$1200 used to $2000 new.
You then need to fabricate or adapt a rear inlet manifold to mount the throttle body and bypass valve to. Modify the top plate of the manifold to suit the supercharger of choice, and lastly figure out a pulley system to drive the blower. You can figure another 1-2 thousand for this.
There's a used bolt on whipple setup for sale right now for $7000.
In your honest opinion what is more reliable and has the longest life, a supercharger or a turbo kit? And what is easier to use and hook up?
02-03-11, 04:33 PM
#6
I honestly don't want to turn this thread into a super vs turbo charging debate. The subject has been covered a million and one times here on in this very forum since 2002-2003ish.
I like that fact that this twin screw can deliver 12psi by 1900rpm. In terms of superchargers I like the twins screws design over centrifugal or roots types.
I chose to go this route because I have a spare motor to mock it up on, and I can do 90% of the work from the top of the motor and I don't want to mess with the exhaust manifolds at this point, but once they pose too large of a restriction, I might just replace them with turbo manifolds and and go TWINCHARGED!
I like that fact that this twin screw can deliver 12psi by 1900rpm. In terms of superchargers I like the twins screws design over centrifugal or roots types.
I chose to go this route because I have a spare motor to mock it up on, and I can do 90% of the work from the top of the motor and I don't want to mess with the exhaust manifolds at this point, but once they pose too large of a restriction, I might just replace them with turbo manifolds and and go TWINCHARGED!
02-03-11, 04:34 PM
#7
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I am very interested in supercharging my 1UZ too. Please keep us updated with details, because I want a good example to follow in my setup. My goal is upper 300's at the wheels. Nothing crazy, and like you ill have a standalone, but I hope to have one in place already before I boost.
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02-03-11, 04:36 PM
#8
I honestly don't want to turn this thread into a super vs turbo charging debate. The subject has been covered a million and one times here on in this very forum since 2002-2003ish.
I like that fact that this twin screw can deliver 12psi by 1900rpm. In terms of superchargers I like the twins screws design over centrifugal or roots types.
I chose to go this route because I have a spare motor to mock it up on, and I can do 90% of the work from the top of the motor and I don't want to mess with the exhaust manifolds at this point, but once they pose too large of a restriction, I might just replace them with turbo manifolds and and go TWINCHARGED!
I like that fact that this twin screw can deliver 12psi by 1900rpm. In terms of superchargers I like the twins screws design over centrifugal or roots types.
I chose to go this route because I have a spare motor to mock it up on, and I can do 90% of the work from the top of the motor and I don't want to mess with the exhaust manifolds at this point, but once they pose too large of a restriction, I might just replace them with turbo manifolds and and go TWINCHARGED!
I actually started a turbo vs supercharger thread in the past but I like to hear peoples opinions on this topic whenever I can.
Anyways im looking forward to watching this progress.
Thanks again
02-03-11, 04:39 PM
#9
I am very interested in supercharging my 1UZ too. Please keep us updated with details, because I want a good example to follow in my setup. My goal is upper 300's at the wheels. Nothing crazy, and like you ill have a standalone, but I hope to have one in place already before I boost.
At 12-15 psi I think the power is around 400hp at the wheel. Neil at Rush imports is running that boost level on a stock early 1uz bottom end.
02-03-11, 05:39 PM
#10
Well on a similar setup (Paul in Australia) has made 400hp at the motor on 6.5psi or about 300 at the wheel. You don't need standalone to run this... The stock injectors/maf/ecu are capable of supplying enough fuel.
At 12-15 psi I think the power is around 400hp at the wheel. Neil at Rush imports is running that boost level on a stock early 1uz bottom end.
At 12-15 psi I think the power is around 400hp at the wheel. Neil at Rush imports is running that boost level on a stock early 1uz bottom end.
Our cars already have 250 hp r u telling me it is only a 50 hp gain?
or are out cars 250 hp at the motor and not the wheels?
If so how much hp at the wheels does a stock engine put out(93 sc400)?
sorry for all the questions
thanks in advance
02-03-11, 05:50 PM
#11
Guys please forgive my ignorance but your saying that (paul in australia) has made 300hp at the wheel with this setup.
Our cars already have 250 hp r u telling me it is only a 50 hp gain?
or are out cars 250 hp at the motor and not the wheels?
If so how much hp at the wheels does a stock engine put out(93 sc400)?
sorry for all the questions
thanks in advance
Our cars already have 250 hp r u telling me it is only a 50 hp gain?
or are out cars 250 hp at the motor and not the wheels?
If so how much hp at the wheels does a stock engine put out(93 sc400)?
sorry for all the questions
thanks in advance
02-03-11, 07:17 PM
#12
Yep. Sc400 puts 180-185hp (on a good day) to the rear tire. (through the stock a340e automatic transmission. A manual trans would have less parasitic loss and probably put down closer to 200hp)
6psi is good for 120whp gain at the tire.
Here's Paul Drane's setup: https://www.clublexus.com/forums/per...charger-4.html
Read up!
The big plus side to a twin screw is it gives instant boost as soon as you stab the throttle.
(There is a bypass valve that lets the rotors of the supercharger free spin by re-routing the discharge air back into the inlet of the supercharger. This valve is open anytime the engine is under vacuum, like part throttle cruising, idleing, etc. But, as soon as the first margin of boost is produced, the valve returns to the closed position and boosting begins. )
What happens when you stab the throttle of idle at 5 mph now? The engine lacks low end torque and the car bogs until about 2800rpm and it seems to come alive. If a twin screw can pump 12psi boost by 1900rpm... it's going to assist the engine exactly where it's lacking most.
6psi is good for 120whp gain at the tire.
Here's Paul Drane's setup: https://www.clublexus.com/forums/per...charger-4.html
Read up!
The big plus side to a twin screw is it gives instant boost as soon as you stab the throttle.
(There is a bypass valve that lets the rotors of the supercharger free spin by re-routing the discharge air back into the inlet of the supercharger. This valve is open anytime the engine is under vacuum, like part throttle cruising, idleing, etc. But, as soon as the first margin of boost is produced, the valve returns to the closed position and boosting begins. )
What happens when you stab the throttle of idle at 5 mph now? The engine lacks low end torque and the car bogs until about 2800rpm and it seems to come alive. If a twin screw can pump 12psi boost by 1900rpm... it's going to assist the engine exactly where it's lacking most.
Last edited by UpInTheLex; 02-03-11 at 07:21 PM.