>Heinz:
>
>OK, I hear you, but I guess you didn't understand my question (i. e. How
>do they (bank and individual nozzle type injection systems) differ and
>what benefits do they offer
vs.TBI and port types)???
>
Paul,
Only way the bank and individual differ is that only one injector fires at a
time and you can adjust individually the fuel fed. It's still a ported type,
just individual injector control vs 2x4.
Re my ported: I have more control via a laptop with the Rance/Accell EFI
(ported) with reference to programming.
For my own peace of mind (which has no bearing on anything) I prefer the
fuel being injected a ways down the intake manifold vs spraying right on
top.
>Also, will you have an EGT sender for each cylinder?
Yes.
>What brand?
The AV10 that was mentioned on this list a while back. It's actually used
for aviation. It should clean up the instrument cluster by quite a bit.
After looking into it I could see some benefits of voice alert when
something is abnormal. ( I can recall that it would've saved me a head
gasket on a trip a long time ago ). I'm now a little better off with the
digital gauges as they flash when over limit, but a whack behind the ear (or
in the ear) can only help.
>Is
>the gauge an all in one type, graphic display?
measures individual probes and remembers hi and low.
It's a single LCD display that can be set to manually display a 'gauge' or
it'll scan.
Monitoring goes on continously no matter what and you can also log to a
laptop.
It's just too bad I didn't find this before spending a pile on gauges it'll
probably be replacing.
More in synch with your question, I hope
Heinz
>Otherwise, all I
>understand you will measure is each bank of the engine exhaust?
>
> Paul
>
>From: Heinz Wittenbecher [mailto:heinz]
>Sent: Monday, November 16, 1998 2:27 PM
>Subject: Re: GMC: Fuel Injection
>
>Hi Paul,
>
>TBI is really just a replacement for the carb. I had 2 injectors with
>the Howell system that basically sprayed fuel into the intake manifold.
>(my explanation is really oversimplyfied, i.e. just meat and potatoes.
>
>
>The ported system has an injector for each cylinder, but they actually
>only fire (spray) twice, i.e. 4 at a time. (Not one side vs the other,
>but rather in 4's as appropriately timed). This means that a cyl may get
>fuel before TDC and another after TDC, etc. It seems that in most cases
>this is perfectly adequate and of course cheaper to produce.
>
>The potential problem with this scheme is that if a cyl is hot/cold vs
>the other 3 in the bank it is less than perfect. I would think that an
>EGT would be the only way to tell. Now assume we have a modified piston
>head, such as one of mine (swallowed exhaust valve which rattled around
>a bit before it spit it out the back
it comes to mind that that
>cylinder may be hotter or colder. Probably no big deal if a little
>colder, but probably not so good if it's hotter, ie leaner.
>
>So... if for 300 bucks I can tweek it so that each cyl is perfect
>combustion I consider that a not too bad investment.
>
>I expect that I'll have my engine monitor (silicone sally) in over Xmas
>and I'll be able to get an idea on just how even all cylinders burn with
>the EGT's.
>
>At least that's how I have it in my mind... and I could be totally wrong
>
. After all I'm just a hobby pro [g].
>
>I welcome any substantiation or clarification.
>
>Heinz
>
>
>From: Bartz, Paul
>Date: Monday, November 16, 1998 11:01 AM
>Subject: RE: GMC: Fuel Injection
>
>Heinz:
>
>First I've seen any mention of bank and individual nozzle type injection
>systems?
>
>How do they differ and what benefits do they offer
vs.TBI and port
>types?
>
>Paul Bartz
>
>From: Heinz Wittenbecher [mailto:heinz]
>Sent: Saturday, November 14, 1998 1:09 PM
>Subject: Re: GMC: Fuel Injection
>>
>>Dan, if
www.bytedesigns.com/gmc is where you looked... disregard this
>>note. If it's not... take a browse over there and let me know if you
>>have questions. I'm currently running the ported kit from Rance that
>>uses Accell electronics.
>>Once I get my EGT's hooked up I'll see if it's needed or not.
>>From: Dan Winchester
>>Date: Saturday, November 14, 1998 9:47 AM
>>Subject: GMC: Fuel Injection
>>So far I have only seen one descriptive article about fuel injection.
>>Are their others on the list that have converted and what are your
>>experiences?
>>What are the different brands? Holly, ???
>>What are the different types? Throttle body, ported, ???
>>
>
