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Opinions on twin turbo for the K5

ryoken said:
like a big version of the old Moroso Kool Can...
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me and my uncle made one of those out of a foldgers coffee can, just ran fuel line into a can in a circle starting from the bottom to the top, pack it with ice and call it good, worked out pretty good. :D
 
sounds like

[QUOTE/]
Unfortunately, I had to sell that awhile back due to no job and no money. Really sucked having to sell that. I got a call back from the buyer 3 months later. He was all pissed since the place in Vegas that put the motor together screwed everything up. Luckily for him, his machine shop spotted all the mistakes and was able to fix them but it cost him more $$$. I had to send him some cash out of my own pocket since I guaranteed the engine. :doah: I would of just installed it the way it was and found out the hard way that the engine was doomed from the start. My luck with big blocks is terrible since that would of been engine #6! I just want to drive it! :crazy:

Pics of what happened to my 496:
http://www.off-road.com/chevy/tech/454engine/problems/MVC-568S.JPG
http://www.off-road.com/chevy/tech/454engine/problems/MVC-571S.JPG

Pic of my 540
http://www.off-road.com/chevy/rodent/540/sb1.jpg[/QUOTE]

sounds like you need to find a different machine shop, you probally used the same shop on all of your prior engines and they all poped, and you thought it was just your fault or a faulty part and all along it may have been your machine shop blowing those motors for you, thats why i use a shop that regularly builds donovan monsters and pontiac big chiefs along with quite a few nascar and dirt track motors and they guarantee them in the racing environment...so my wild 383 seems tame to them!!
 
i've always wondered about a supercharger

or dual super chargers on the front running off my belts, but rig up a type of pulley on them like on an a/c compressor, where you can engage or disengage the huffers......make the hat with the top like a check valve...when they are off the lid is allowed to drop down 3/4-1" and suck air thru the slot around the outter edge and thru the filter and run naturally aspirated.....but when you wanted the boost flip a toggle that locks up the clutch pulley on the front of the superchargers and they build up enuff pressure to push the top back up and closed so that pressure can be built up inside the hat...and your running with boost...i've toyed with the idea in my head and on paper for about 17 yrs but never have known any one who knew enuff about huffers to blow holes in my theory or tell me that it might would work, what do you guys think?
 
blazin_blazer said:
or dual super chargers on the front running off my belts, but rig up a type of pulley on them like on an a/c compressor, where you can engage or disengage the huffers......make the hat with the top like a check valve...when they are off the lid is allowed to drop down 3/4-1" and suck air thru the slot around the outter edge and thru the filter and run naturally aspirated.....but when you wanted the boost flip a toggle that locks up the clutch pulley on the front of the superchargers and they build up enuff pressure to push the top back up and closed so that pressure can be built up inside the hat...and your running with boost...i've toyed with the idea in my head and on paper for about 17 yrs but never have known any one who knew enuff about huffers to blow holes in my theory or tell me that it might would work, what do you guys think?
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Sounds like what Mad Max had on the Road Warrior :p:
 
I'm getting in late but here's my take.

First, I'd be very wary of running a turbo, especially twin turbos, moreover ones mounted directly to the intake manifold, without an intercooler. Yeah, it'd be cheaper, and easier to plumb, but without it thats a crapload of heat going right back into the engine.


Second, unless you're running high rpm mud bogs, drag races, or just tearing up the streets, the turbos won't do you much good. If youre riding trails, I doubt, (unless you're driving like a maniac) I doubt the turbos would even see RPMs high enough to provide boost or power gains.

If you're going for the "cool" factor, it'd be awesome. If you're going for a high RPM application like drag racing or mud bogging, thats a great way to make insane power with not much displacement. But for a trail rig, I wouldn't even consider it an option.

Mike
 
blazin_blazer said:
sounds like you need to find a different machine shop, you probally used the same shop on all of your prior engines and they all poped, and you thought it was just your fault or a faulty part and all along it may have been your machine shop blowing those motors for you, thats why i use a shop that regularly builds donovan monsters and pontiac big chiefs along with quite a few nascar and dirt track motors and they guarantee them in the racing environment...so my wild 383 seems tame to them!!
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Yeah, I've had bad luck with a couple shops. Won't be going back. Wish I could find someone here locally.

1st Engine
Stock 350 TBI
no happy with HP

2nd Engine
383 Carbed
Western Engine in Denver built it
Lost oil pump pickup in pan
My fault on that since I didn't weld the tube

3rd Engine
Used 454
Bad luck and spun a main

4th Engine
GM Crate 454 with peanut port heads
Not happy with HP

5th Engine
496ci (used crate block)
Built by Western Engine
Bad Job on machine work
Spun rod bearings after 3k miles
Western wouldn't offer any warranty since it was custom

6th Engine
540ci
Built by Dyno-Flo in Vegas
Had wrong bearings, not decked correctly

Other experiances with shops:

Pro Built in Denver
Does good work but they had my LS1 for 6 months and never started on it.
Picked it up, sick of waiting

Heads by Paul in Denver
Suppose to be one of the better shops
Installed a piston backwards and a few other no-no's I found.

Anyone know of a REALLY good shop in Denver??? :confused:

Oh, someone mounted twin supercharges on a C2 vette. Plenty of HP but couldn't keep it cool plus he had no traction.

MTMike said:
I'm getting in late but here's my take.

First, I'd be very wary of running a turbo, especially twin turbos, moreover ones mounted directly to the intake manifold, without an intercooler. Yeah, it'd be cheaper, and easier to plumb, but without it thats a crapload of heat going right back into the engine.


Second, unless you're running high rpm mud bogs, drag races, or just tearing up the streets, the turbos won't do you much good. If youre riding trails, I doubt, (unless you're driving like a maniac) I doubt the turbos would even see RPMs high enough to provide boost or power gains.

If you're going for the "cool" factor, it'd be awesome. If you're going for a high RPM application like drag racing or mud bogging, thats a great way to make insane power with not much displacement. But for a trail rig, I wouldn't even consider it an option.

Mike
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Yeah, I think I'm scrapping the turbo idea. Good power but I'm worried about the heat going up steep highway passes and it would be tough to mount an intercooler where it would't get smashed. Above the motor would be okay but the pluming and mounting sounds difficult.

A supercharger sounds like a better idea but I'm still worried about heat.

For now I'm just building a nice 400 SBC with AFR 190 heads and I'll see what power I can get out of it. If I'm not happy with HP, then I may stick a supercharger on.
 
that was all hollywood

78Suburban said:
Sounds like what Mad Max had on the Road Warrior :p:
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what i'm talking about is superchargers....on that movie he had a roots type blower and it won't work like they dipicted it..i laughed so hard when i 1st saw that because it won't work that way , but what i'm proposing may just actually be feasible..any1?
 
blazin_blazer said:
what i'm talking about is superchargers....on that movie he had a roots type blower and it won't work like they dipicted it..i laughed so hard when i 1st saw that because it won't work that way , but what i'm proposing may just actually be feasible..any1?
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Yes, it actually can be made to work like that. Toyota MR2's in the late 80's with factory roots type superchargers had a clutch on the blower pulley. The clutch wouldnt engage until about 3000 RPM's, unless the motor was under heavy load. This was easily bypassed and could be wired to a toggle switch that could control the engagement.
 
Twin Superchargers:

Sorry, it was a C3, not a C2.
1,200hp Twin Whipple
charged 512 CID Merlin
DSC08088%20copy.jpg

DSC08110%20copy.jpg


4mb Video:
http://www.lateral-g.org/movies/1200hpvette.wmv
 
the blower on max's car was just a fancy air cleaner shell for a carb. there was a clutch that turned on the "blower" when he pulled the knob.
 
tx_sub said:
the blower on max's car was just a fancy air cleaner shell for a carb. there was a clutch that turned on the "blower" when he pulled the knob.
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Yep.

Another addition to the black car was the prolific Weiand 6-71 Supercharger bulging though the hood. This supercharger had a real Scott injector hat (now a nostalgic drag racing piece) sitting above it, yet all of this was just a movie prop mind you, and was not functional in real life. The internals (rotors) were taken out, and it sat on a stand above the block, and also above a four-barrel carburetor which is what actually fed the gas/air mix to the engine. You will also note that Max's black car had side pipes, or "Zoomies." Eight tips in all, yet only a couple (the rear ones) were actually functional. The tips were flared in MM1, and not flared in MM2 (different Zoomies altogether in that movie). In MM2, the car also had a different blower assembly.
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More info and pics on the car:
http://www.lastinterceptor.com/real.html

O3.jpg
 
cool link... :D

i always thought they were tweaked Javelins... :doah:
 
Bwaaaaahahahahahaaaaa!!!!!!!!!! I stopped over at Shawn's place yesterday afternoon and discovered exactly why he has a new love affair with turbos. And all the folks whining that turbos only make power at high RPM are totally full of $h!t. :rolleyes: Next time you're in the Denver area, I'm sure that Shawn would be more than happy to show you the errors of your thinking. A properly sized turbo makes power the instant that you mash the loud pedal! :bow: :bow: :bow: I'm still giddy... :D :D :D
 
Leadfoot said:
Shawn

I can't offer you any help with turbo's, but glad to see you back around and tinkering.
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Thanks! :) Glad to be back. ;) It will be nice to FINALLY get the K5 out of the garage and back on the trail.

HarryH3 said:
Bwaaaaahahahahahaaaaa!!!!!!!!!! I stopped over at Shawn's place yesterday afternoon and discovered exactly why he has a new love affair with turbos. And all the folks whining that turbos only make power at high RPM are totally full of $h!t. :rolleyes: Next time you're in the Denver area, I'm sure that Shawn would be more than happy to show you the errors of your thinking. A properly sized turbo makes power the instant that you mash the loud pedal! :bow: :bow: :bow: I'm still giddy... :D :D :D
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:DYeah, it comes on really quick on that little car. Not too often you see an AWD burn out on all 4 tires (equipped with front and rear lockers). I'll have to take you for another ride when I get the better turbo installed. Shooting for 11's next spring. Thanks for coming by and helping out yesterday Harry! :bow:
 
well tell me

joez said:
Yes, it actually can be made to work like that. Toyota MR2's in the late 80's with factory roots type superchargers had a clutch on the blower pulley. The clutch wouldnt engage until about 3000 RPM's, unless the motor was under heavy load. This was easily bypassed and could be wired to a toggle switch that could control the engagement.
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1st off roots is a blower that can't let air be sucked thru, a supercharger is a completly diferent creature and with a check valve style hat it could work
how the motor pulls air thru the vanes in the rotor..not gonna happen...now with supercharger with a cluctch type pully and a hat on the carb that will drp down while not under boost it gets air, flip the superchargers on it pressureizes the hat pushes the top up and you have boost, some1 that knows what they talking about explain why or whynot this would work?
 
blazin_blazer said:
1st off roots is a blower that can't let air be sucked thru, a supercharger is a completly diferent creature and with a check valve style hat it could work
how the motor pulls air thru the vanes in the rotor..not gonna happen...now with supercharger with a cluctch type pully and a hat on the carb that will drp down while not under boost it gets air, flip the superchargers on it pressureizes the hat pushes the top up and you have boost, some1 that knows what they talking about explain why or whynot this would work?
Click to expand...

how do you explain the 3800 supercharged cars will run and drive with no belt on it then? ive seen plenty of them lock up an idler pulley and toss the belt and the cust drive them to the shop?

the 3800's have a roots style blower made by eaton.

ryan
 
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