Todd's sure fire blower sale - Fred,

[Todd....!!]

Cool David,

Have seen the turbos in the diesels, have even measured them for use on
my 440, the exhaust outlet on the turbo measured 4 inches!  The cubes
may be a bit on the high side as far as the turbo being oversized... 
Not sure of the cubes of the engine I was checkin the turbo on....

I have NO probem with turbo's, but If I can get about the same power out
of a less expensive means, then I may just try it...

I DO really like the controlability of the boost on a turbo system....

AND the fact that a turbo system can generate FULL boost right off the
line with a simple power brake....

Thanks for the info, very interesting!

Later!

Todd....

David A. Cooley wrote:
> 
> At 10:53 PM 6/19/99 +0000, you wrote:
> >Hey Dave,
> >
> >Thanks for the info, very interesting...
> >
> >However, ALL the Diesel trucks(18-wheelers, mack trucks, etc...) are ALL
> >using regular old Blowers in their Billion Mile vehicles, with no
> >problems, and they'vebeen doin it for YEARS....
> >
> 
> There are actually more turbocharged diesel trucks around now than blown...
> Even the diesel manufacturers found the turbo was MUCH more efficient than
> a roots blower.  If you ever get a chance to peer under the hood of a GM
> General, take note on the size of the turbo's... they're HUGE.  those big
> diesels with 18:1 or 20:1 compression are running 20+ pounds boost off the
> turbo and making gobs of torque!
> 
> >Just how long HAVE Roots type blowers been around anyhow?...
> >
> 
> For ever!
> 
> >Point being is that if ALL of the 18-wheelers believe that the way their
> >blowers are set up(Without the teflon seals on the tips of the lobes,
> >etc.) are good enough for millions upon billions of miles, WHY would you
> >wanna mess with that?
> >
> 
> The old GM diesels with blowers actually use the blower on the 2 stroke
> diesels only... I have seen some books that show the blower on the exhaust
> side sucking exhaust out to help scan\venge, and I have seen some books
> showing them on the intake side.  In either case, they are not required to
> build any respectable pressure, only to assist in moving air/exhaust.
> 
> >In other words, just how much more efficient would seals make a regular
> >old 6-71 huffer?  Just wonderin....
> >
> 
> A bit, but it's efficiency is still way down compared to a properly sized
> turbo system
> 
> >I'm thinkin that the seals or the like would make the blower as much
> >more  efficient as TOTAL SEAL rings make an engine....
> >
> 
> there could be a comparison there... Normal rings set up properly in a
> properly prepared/built engine have very little problems... Total seal
> gapless rings also have a bit over that in sealing capacity, but the result
> is more like pissing yourself while wearing a black suit... It gives you a
> warm feeling, but no one else notices.
> 
> ===========================================================
>            David Cooley N5XMT           Internet: N5XMT at bellsouth.net
>      Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
>    Sponges grow in the ocean... Wonder how deep it would be if they didn't?!
> ===========================================================