<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">

Those cobalt ss's sound ****** mean. </TD></TR></TABLE>

They are out already?

 

This is an old GM supercharger that was used on old Diesel engines. I don't know if GM actually made them, but Eaton, Weiand, and other supercharger companies didn't even exist then. This unit is a piece of history; it was created using plans for the Rootes (not roots) blower, which was actually designed to vent coal mines. Invented by, you guessed it, a man named Rootes. This is why superchargers are still commonly called "blowers", while turbos, which are basically similar, are not. The Rootes blower subsequently influenced the design of every single supercharger subsequent not including later centrifugal designs.

I would love to get my hands on one just as a conversation piece.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">This is an old GM supercharger that was used on old Diesel engines. I don't know if GM actually made them, but Eaton, Weiand, and other supercharger companies didn't even exist then. This unit is a piece of history; it was created using plans for the Rootes (not roots) blower, which was actually designed to vent coal mines. Invented by, you guessed it, a man named Rootes. This is why superchargers are still commonly called "blowers", while turbos, which are basically similar, are not. The Rootes blower subsequently influenced the design of every single supercharger subsequent not including later centrifugal designs.

I would love to get my hands on one just as a conversation piece.</TD></TR></TABLE>

aah! intersting,
thanks for the info man.
Actually my company got one of these,(big reg piece, weighing in at 50 pounds!)
and a couple smaller silver ones, that looked kinda newer, but still way bigger than a n eaton jrsc type blower.

Also I wondered why some people refered to blowers as "roots type blower"
I always thought they meant like grassroots or something, heh.

the one I posted will be up forsale on ebay shortly btw

 

Do the smaller ones look like they are made of aluminum? If so, look for "177", "194", or a similar number cast in raised letters on the case. These would then be the later Weiand-made Rootes superchargers used on classic carburated cars (And on Top Fuel dragsters) The number is the size of the blower, measured in cubic inches of displacement per revolution.

 

i believe the non-sc cobalt's are 16k and the sc'd version being 21k, that is just from what i remember reading elsewhere though.

 

the cobalt ss is suppost to rated at like 205 at the wheels but if it does turn out to be anything like the srt it should be a underestimate..just have to wait a few more months and see..

 

cobalt
$21,995
supercharged...205 hp 0-60 in 6.0 sec
14.5 1/4
115ft 60-0 braking
.89 skidpad
69mph on the 600ft slalom.

now it may not be as fast but in this motor trend i just pulled that info from it has an article about the new turboed mazda 6 which looks pretty nice


Modified by bdm162003 at 12:22 AM 1/7/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">Do the smaller ones look like they are made of aluminum? If so, look for "177", "194", or a similar number cast in raised letters on the case. These would then be the later Weiand-made Rootes superchargers used on classic carburated cars (And on Top Fuel dragsters) The number is the size of the blower, measured in cubic inches of displacement per revolution.</TD></TR></TABLE>

yeah it does look like its made of aluminum

I can't look at any of em anymore though, cuz I got layed of today

 

you got that at work??

where in the hell do you work?

 

I workED at a place htat sells stuff for ppl on ebay..
they send it to us we sell it..

get all sorts of random ****,
saw some turbos there today too.. before I got canned

 

definately off of a tractor or some other heavy equip.. its not that big though.. the 871
(might be bigger) i have off of a detroit desil is at least 2x as big

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">The Rootes blower subsequently influenced the design of every single supercharger subsequent not including later centrifugal designs.</TD></TR></TABLE>

Yup, they determined from the roots that any form of forced induction that doesn't involve internal compression sucks ***** for performance, and thusly every single supercharger subsequent didn't bother to have anything in common with the roots.

Roots are great if you want mpg or bsfc increases at part throttle, are a scavenging ****, or have some ulterior motive where you want to kill off intake harmonics and severely mute exhaust harmonics.

And, yes, I'm leaving the 'e' out and not treating it like a proper pronoun to annoy you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">
And, yes, I'm leaving the 'e' out and not treating it like a proper pronoun to annoy you. </TD></TR></TABLE>

haha.

i never knew it was supposed to be 'rootes' in the first place.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">Yup, they determined from the roots that any form of forced induction that doesn't involve internal compression sucks ***** for performance, and thusly every single supercharger subsequent didn't bother to have anything in common with the roots.

Roots are great if you want mpg or bsfc increases at part throttle, are a scavenging ****, or have some ulterior motive where you want to kill off intake harmonics and severely mute exhaust harmonics.

And, yes, I'm leaving the 'e' out and not treating it like a proper pronoun to annoy you. </TD></TR></TABLE>

so rootes blowers suck and eaton's don't then?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">

so rootes blowers suck and eaton's don't then?</TD></TR></TABLE>

Hee hee!

 

thats a huge bitch...........

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ronin EG6 &raquo;</TD></TR><TR><TD CLASS="quote">thats a huge bitch........... </TD></TR></TABLE>

BEHEMOTH!!

 

Very big blower there..

Good history on that blower and on the Megasquirt thread, interesting stuff Beepy...

 

No roots type blowers dont suck...thats what top fuel drag runs run. I work in a diesel engine rebuild shop we have huge detroit diesel v-8's that are supercharged and turbocharged, useing huge roots blowers and huge *** turbos

 

Well, you can take it or leave it on the blower. They do "suck" compared to turbos and centrifugal units, but that's what antequated technology tends to do. What made them last so long was that blow-through never really worked until EFI came along.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy &raquo;</TD></TR><TR><TD CLASS="quote">Well, you can take it or leave it on the blower. They do "suck" compared to turbos and centrifugal units, but that's what antequated technology tends to do. What made them last so long was that blow-through never really worked until EFI came along.</TD></TR></TABLE>

blow through? efi ??

and yeah, turbo's definetely out do them,
but the "antequated" eaton is still veeery good.

I put together a used jrsc kit on my sohc,
i'm guessing at a good 40hp increase over what I had previously(completely stock 6psi kit untuned). and It ran me $1200.
maybe another hundred or two for miscellaneous stuff, that you could avoid if you know what you're doing(which I didnt ) hehe.

Not bad at all I must say!
you can do a junkyard turbo cheaper,
but the cheapest prefabbed kit you'l find would be a greddy, and that'll run a few hundred more for a complete kit.

It's going to be really sweet when I get my boost upgrade and tuning.
i'm going for 9psi, all i'll need to buy will be pulleys, and injectors.. and pay for tuning..
course if you want BIG POWER.. turbo is the only way.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dave529 &raquo;</TD></TR><TR><TD CLASS="quote">No roots type blowers dont suck...thats what top fuel drag runs run. I work in a diesel engine rebuild shop we have huge detroit diesel v-8's that are supercharged and turbocharged, useing huge roots blowers and huge *** turbos</TD></TR></TABLE>

that blower is from a old detroit 271 whick is allot smaller than the 6v71 and 8v71 detroit blowers which weiend ect use the same basic casting for there blowers.

 

nothing like having a good selection............



The Chevelle went 11.3 @ 67 mph on BFG drag radials, standing on the brakes at the 800 ft mark...........got booted for no cage........

Should run high nines on 26" tall slicks.......

 

^^^Damn. That's a wicked trap speed.

 

faster than 11.99 (now 11.49) you have to have a rollbar, driver was trying not to get thrown out on the first pass.........oops.