Whoa ! Supercharger?

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Enough of turbo outlet restrictions, EGT, spool up, low fuel turbos, high fuel high rpm turbos. Can't we Paxton-ize? Can these handle the job?

We ought to be able to get a kit constructed somewhere. The ME's can do the CFM calculations. This will select the proper compressor. Once the compressor is selected, a bracket, longer serpentine belt, tensioner, some plumbing & walla #ad
A different We've probably got the best source of fabricators around. #ad
The different pulleys will change boost @ a given RPM.

Next the 6 into 1 exhaust manifold goes by-bye in favor of a thick tube, high temp coated 3 into 2 into 1 shorty.

Can we do this & not worry about fuel while boosting?

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Money Sink - 96, 5 speed, SLT, 4X4, LWB, Ext Cab, ISSPRO pillar guages, TST 605, Delvac 1 & Amsiol, Injectors, K&N, Monicas silencer ring removed, Exhaust brake, 4" CAT back w/no CAT, 4" chrome turn down tailpipe straight out back, Mag-Hytec, 3:54, Spray in bed liner, Super5th side to side tilting 24k#, Brush Guard, Stainless rear window louvers & lite bar, Diamond plate tool box & bed caps, Dodge running boards, Sheepskin.

 

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forrest , i'm sure it can be done , but i believe that the turbo is basically free horsepower , where a paxton will require horsepower to make horsepower , but its an interesting idea , put on the 24 valve motors unless you fool the computer you will still de fuel even though boost will not be controlled by the wastegate ...

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John W. in N. H.
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Y2K 2500,QC,4x4,SLT+,CUMMINS,Auto,TT,CS,3. 54 LSD,Driftwood,Camel LEATHER + LOADED,Line-X,silencer ring in the glovebox,aspiring to BOMB !

1969 Dodge Superbee, Black on Black, 383, 4spd, BOMBed !!

 

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What kind of horsepower would it take to run a supercharger at 30+psi? Would a supercharger even make 30+psi without going way outside it's efficiency window? Weren't roots-type blowers used on class 8 and 9 trucks years ago? What were the results if they were? Must of gone to turbos for a reason? Questions and uncertainty were what I majored in during my short stint in college... answers were few and far between #ad
!

Chris

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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

 

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Part of getting good mileage is not ramming boost and fuel down the engines throat when just puttin around. I don't need 250 Hp to get to the 7-11, the turbo is horsepower when you need it.
EGT's are still important with the blower. 1200 degree exhaust upstream of a turbo or without is still going to melt your pistons. There is no free horsepower.
Food for thought #ad


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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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Remember the Killer B's? They were the Group B class, 2 & 4wd cars that were running 400 to 500hp from 1. 6 to 2 liters. They had a supercharger & a turbocharger. They figured they couldn't wait around for the boost so they configured the supercharger, pulley & pop off valve, for low rpm & used the oversize turbo for the high end, where rpm & fuel was a plenty. The supercharger basically 'disengaged' from the circuit & left things to the turbo.

Basically they had 'boost' from just off idle to red line, with no lag. #ad
They were ramming tons of PSI down the throats of those little 4 bangers. I don't remember the PSI, but it was a bunch. A whole lots more than the 4psi for a streetable air rammer.

Right-O, nothing is for free, but maybe there is a tradeoff, HP to turn it -vs- spool up & EGT.

Here we are needing a big turbo to handle the high end fueling requirements & more RPM, but suffer from in-town mileage, turbo lag & smoke @ the low end. Maybe tweaking a pulley diameter & wastegate on the supercharger allows it to be 'custom tailored' to the different levels of BOMBing. #ad


Maybe its a 'dream on', but its definately another way of cramming air thru an intercooler & nada restriction on the way out. #ad

 

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It would be easier to sequentially twin turbocharge the engine. This configuration uses all 6 cylinders to power a small, quick-spooling turbo. The second, larger turbo is fed by all the exhaust gases of the first turbo when RPM is low. When the boost builds quickly as a result of the first small turbo, the small turbo is bypassed and all the exhaust gases flow directly to the larger turbo. So, while in the low RPM, you're building boost with the small turbo, but generating turbine speed of the larger turbo too.

Supercharging generally doesn't build as high of boost as turbocharging because the turbine RPM isn't as fast. Personally, I like the turbo.

-Michael

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'00 2500 RAM, RegCab, 4x2, Cummins, 6-spd, Driftwood/Agate...

 

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Take a look at this:
www.dieselnet.com/news/0002honeywell.html

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1989 D250, 727 auto trans, 16 cm^2 turbo housing, Banks Powerpack, Turbo Shop Intercooler

1998 VW Jetta TDI

 

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Forrest, I worked on this a bit and came upon brick wall after brick wall. If I had a lot of time I could make this work. I believe in the concept but fabricating all the hardware is not easy without access to a machine shop. I called Paxton and got shut down. By the way, I believe it was Paxton who told me they needed 55,000 rpms for 30 lbs boost, this is the supercharger and not the engine thank goodness!! This doesn't sound like enough to me. I also called Whipple and they told me their supercharger made 5 to 6 lbs of pressure. Not impressive! I called Eaton, negative. This is an engineering Mt. Everest!!

 

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HVAC,

Wholly bummer. #ad
I was so gun shy after trying to get technical data out of Banks that I didn't call. I rember dragsters use to mount a power takeoff blower/Monica in front of the engines. You'd think the power takeoff boys would have something.

Figured that fabrication would rule on this one, but if you've ever looked under the hood of a 5. 0 Mustang, you can't see the ground yet the drive belts, the supercharger boys did it. Where there is a will & a perceived bunch of suckers, there's a way. #ad


Well, maybe some Capitalistic Pig will show up with something & lure more green out of our kids inheritance. #ad

 

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Don't get me wrong, I would still like to persue this idea. But the only way I will hamper Piers with this concept in May would be to wedge a 671 GMC under his front wheel!!! LOL

 

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FORREST, you touched on zero-lag turbo/supercharger setups. In the March issue of Road & Track they tested a Group A Ford Focus rally car. It was equipped with "anti-lag" turbo plumbing. The description was vague but the system basically passed just enough fuel and air to maintain some combustion temps and exhaust pressure to keep the turbo spooled up with the throttle plate closed. Ignition timing was cut to reduce power during the systems closed throttle application. The article said that all kinds of pops and crackles accompany the systems use. COOL! This little 4-banger is said to produce "in excess of 300hp" and 406 lb/ft through a single 34mm air restrictor. Pretty good in my book.

Chris

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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

 

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I was at the SF boat show about a month ago and noticed that Volvo Penta is using such a thing currently. I asked about it all the salesperson knew was it was supposed to make it faster out of the hole and under low rpms quicker respons. Its still out there we just need to find it. (HeHe)BOMBS AWAY

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HVAC, Loud & clear. I think the idea requires 2 steps. 1st, play it down to Piers while, 2nd, keep in the back of the mind, make sketches, more calls, get VC financing, create & sell version to Piers that has remote controlled 'boost decrease' mode. Another switch on the dash. #ad
#ad

 

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rrxp689, I didn't see that. Good thing though, don't those articles make you squirm? There is some trick technology there.

See, in order to get that kind of output from a 16V 4 banger, they've got to be cramming more than single digit PSI. We just need a bigger version. We've got plenty of coil spring capacity left & 5 more psi in the front tires, no problemo. #ad

 

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Just took a look in my library and found this about tractor pulls and sequential turbocharging: "If each compressor is matched to produce 2. 7:1 Pressure Ratio, the interstage absolute pressure will be 2. 7x15=40. 5 psia. Intake manifold pressure will then be 109 psia or 94 psig. Some of the tractor pullers have actually reported intake manifold pressures as high as 105 psig. " BOMB!

 

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HVAC,
When I was hunting for my RAM, I stopped at Dave Smith's for a drool session.

Out front of their showroom was a White RAM that was Dave's. This was supercharged and I suspect probably created by Dr you know who.

The sales guys said it was unreal. Then again they were sales guys.

 

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Hello MY6EATSV8S, good to see you made the BB.

Forrest, I like the way you think, let me know if you spot Piers down your way planting booby traps, OK? #ad


David, I may call up there to Dave Smith's to see if anybody has any info.

 

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Hmm,
That trip would have been thanksgiving weekend of 1998 when I was bringing some furniture from Great Falls to Tacoma.
I almost bought a 98. 5, glad I waited for the 99 that I bought in Vermont.

 

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Why are you glad you waited for the 99 its still got to many valve?hehe

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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, 119k, 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,!2. 10et@105mph

 

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Forrest, did you know it's much easier to "remotely" shut down an electronic engine than a mechanical one #ad
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Scourge of the North #ad