Re: TBI vs Port Injected

[Doug Dayson <djdayson@ix.netcom.com>]

So Grumpy...

I have missed some of this thread but I'm guessing that you're talkin'
optimized TBI vs optimized Carb...

I would expect similar peak power and torque...

Somewhat better cold starting and warm-up driveability for the TBI rig...but
what about normal warm driveability...I'm assuming you're talkin' either
Q-Jet's or AFB's with regards to the Carb's...

Can a well optimized Carb equal the overall warm driveability and performance
of a well optimized TBI system?

My well-tuned Q-Jet (71 Vette...406/375) seems to have similar warm throttle
response and driveability as that of my 88 Mopar OEM TBI Van (within the
Carb's limited altitude range of course)...

Thanks...

Doug

nacelp wrote:


> The engine was first optimized using single, and dual plane manifolds.  I
> doubt the is a EFI manifold that outflows a Weiand 7525 (both in stock
> form).  The times/trap speeds were a wash, it was too close to call.  The
> TBI had all the best manners in the world.  I know carbs really well so when
> I say optimized I'm including idle circuit, transistion, acclerator pump,
> secondary air valve, secondary needles, and hangers, air cleaners, etc.
> They were both tweaked as far as a *normal* person would go.

> Grumpy
> >
> 
> ----------------------------------------------------------------------------
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo@lists.diy-efi.org
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org