Whoa ! Supercharger?

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Piers,

See, my peanut brain was still on a mechanically actuated, HVAC controlled, wastegate actuator. I was envisioning HVAC leaving ahead of the green light, watching the rear view mirror, letting you get 1 or 2 truck lengths ahead, opening the center console, pulling out the black box with the red button in the middle, flipping up the enable switch, pulling out the antenna, drooling, laughing, pushing the button & waving as he goes by.

The Highway Patrol working on an EMP device that might just fit the bill. Ah, joystick controlled, BF black box under the camper shell, roof mounted antenna, the label "HVAC" under the fire button. Funding should be no problem. There are probably a number of 12 valvers that would pitch in. #ad

 

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Wow Forrest, that's way to technical for me #ad
I was just gonna crawl under HVAC's truck and put a line clamp on his fuel line #ad
#ad
#ad

Scourge of the North #ad

 

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YIKES!!! :O Please... Stand away from the truck!! WARNING...

 

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Okay, if your not gonna let me get near your truck I'm gonna be forced to start building a remote shut down device, I can practice on Bill's 24 valve hehehe

Scourge of the North #ad

 

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The self propelled guns (howitzers) we drove in Guard had 2 stroke V8 Detroits that had a Roots blower and turbocharger both, rated at 400 something horse.

 

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FWIW
The blowers on the GM671 serve a different purpose, two strokes require scavenging air for combustion. Without the turbo, the 671 is about 250 horse, less than impressive.

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Jason's Lil' Mack - 89 D250LE 2WD 5Spd 3. 55 Reg Cab. K&N,"tweaked pump", 3. 5" Exst straight,E&M Custom seats. Bosch H4, PIAA 80W/80W HdLites. Bosch 100W Driving. Bosch 55W Fogs.
215,000 miles (350,000 Kms)

 

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or just use Nitrous oxide and a super big turbo, 20 lb bottle should last a while, best of both worlds, it would take a wile for the long turm cost to out weigh the costs of making a blower work, plus how muck powet do you want? Seems like five or even six hundred should be enough. Let me know if you realy want more.

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'96 2500 4x4 3. 54 traclok,billit grill,blue head lights,tenzo blue fog lights,clear tail lights w/red bulbs,chrome front & rear dif covers, alumium bed rail covers and tailgate cover,3" stageII lift,35"BFG M/T's on alumium rims, Kenwood sterio system,tinted windows,westach 60lb boost/egt guage,NOS,bullydog LPG injection,360 degree K&N,"tweaked" pump, 4" exaust w/ flowmaster and a 5" tip,Jim Leonard dual disc clutch, 120k, best performances to date=14. 41et@94. 7mph,328. 7hp w/out LPG,372. 2hp with, more on the way=HX40 w/ 18cm2,TST #10 w/ spring kit,thicker head gasker(lower compression), porting the head, and "killer B" injectors,cant wait to see them pherd guys jaws drop in shame HeHe. '98 Prostreet FXR,Kenny Boyce,96" S&S,Thunder Header,Metzler,12. 10et@105mph

 

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Do blowers work very well at 2000 or 3000 RPM?

 

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Jeff, good point. Seems like you would need a 2" dia. pulley to get some of these systems to produce any boost. To get 55,000 rpm outta the whichever brand is not easy for us low rpm slugs. Now if your at 8K, it is a different story. For you math pleasure seekers, take the crank pulley dia. over the supercharger pulley dia. times rpm times 3. 54. So if your crank pulley is 8" and your supercharger pulley is 4" you get 2, times rpm (3500) is 7000 times 3. 54 is 24,780 supercharger rpm's. The Paxton I believe it was needs 55,000!

 

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Jeff & HVAC,

Right. I'll bet the folks that are using superchargers & turbos on the same motor are spinning the superchargers faster than we are. #ad
Looking worse & worse for the home team.

Looks like the solution, for now anyway, is the hybrid HX40, with the 16cm2 exhaust housing. #ad
Now if we could just get a group purchase going to beat down Piers on the $. #ad

 

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Don't forget the dreaded blower belt. Who wants to be towing 12k up a 6% grade and have the belt fall off? Think the trailer would start pulling you back down the hill? I'll keep my turbo!



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Chris
95 3500 CC SLT Cummins auto
TST 230hp kit, TC lockup switch, TransGo.
Isspro EGT, trans/rearend temp, boost gauges
A-Pillar Mounted
Scotty Air System, Factory Cat-Delete Pipe

 

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this is an old topic... but has gained my intrest... JB

 

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gentlemen, it is already happening a supercharged/turbocharged diesel for commercial application. at airventure 2000 ,in oshkosh wi. i saw a set up of this nature which will be available in aircraft starting the first of the year.

 

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heliopilot... If my memory is right some of the truck pullers use a combo of 4 turbos or 2 turbos and 2 superchargers...

 

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if you read my previous post, its on most small marine motor now, supercharger and turbo. volvopenta.
Adam

 

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If all you want is intake boost at idle, why not install a 10 ga. air tank at 125PSI and run a 2" line to the intake manifold. When you want pressure, open the valve and dump copious amounts of cool air into the engine. Have another device read engine speed and shut off the valve when the engine reaches 2500 RPM. You might regulate the output to 30 PSI, for that little bit of safety margin.

... Let me check some numbers ... 10 ga. of 125 PSI air might yield 2 seconds of 30 PSI pre-boost. That should be enough to get enough fuel through the engine to spin up the turbo. ... 2 seconds, the regulator will hardly have time to react. Rev up the engine and just before you launch, open the valve and let the air blow in full pressure. At 2500 RPM, the engine is sucking in 30 ga. of displacement per second? Hmmm. Might need a 20 ga. tank.

Fest3er

 

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David-VT, not to nitpick, but just for the sake of accuracy, when I bought my '97 at Dave Smith Motors in April of '97, I was told that Dave Smith died a few years before in a scuba diving accident. Maybe there's a Dave Jr. , I don't know.
Andy