DIY_EFI Digest V5 #16
Stowe, Ted-SEA
StowT at PerkinsCoie.com
Wed Jan 12 01:01:39 GMT 2000
howdy and thanks for the tip to go look at the fuel injection parts MSD has.
(I was talking about mounting injectors. as some of you probably know, msd
has some flexible fuel hose hardware, "injector manifold pocket, epoxy-in"
pn 2145. and a range of hose hardware, also injectors. by any chance does
anyone have 4 of these hanging around ? I really only need 2 right now, I'd
hate to have to buy 8 (set).
I suspect that I'll buy injectors from msd also, I have to figure out the
flow. I was going to look up the flow rate of the bosch injectors I got from
my donor 2.3 volvo and double that.
does anyone know if bosch injectors are low impedence or not ? they were
batch fired by the volvo jettronic lh computer, I'm trying to figure out if
I buy msd injectors, if my computer will drive them directly or not.
thanks. Ted Stowe
-----Original Message-----
From: DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu
[mailto:DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu]
Sent: Tuesday, January 11, 2000 12:00 PM
To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
Subject: DIY_EFI Digest V5 #16
DIY_EFI Digest Tuesday, January 11 2000 Volume 05 : Number 016
In this issue:
Re: DIY_EFI Digest V5 #15:Knock Sensors
Re: DIY_EFI Digest V5 #15:Knock Sensors
Re: TWM & GMECM
Re: GMECM and Crank Sensors
Re: Knock sensor on Dyno
See the end of the digest for information on subscribing to the
DIY_EFI or DIY_EFI-Digest mailing lists.
----------------------------------------------------------------------
Date: Tue, 11 Jan 2000 04:52:37 -0800 (PST)
From: Carter Shore <clshore at yahoo.com>
Subject: Re: DIY_EFI Digest V5 #15:Knock Sensors
Ouch!
Geez Grumpy, gimme a break. I was replying to the
original post by brucep at ptd.net, not to your reply,
(got my Bruce's mixed up).
You've probably forgotten more than I'll ever learn on
this subject, and I appreciate the fact that you are
willing to share it with us.
But bear with me a second. I'm facing a similar
problem to the dyno-building Bruce (he is testing
tractor motors). The problem is that no one has
applied knock sensors to my engine (at least not the
manufacturer). Maybe there's a KS that will work,
maybe not. I've seen a spec sheet for Ford KS that
specifies the resonant frequencies for some, but not
for any other manufacturers.
Since I have worked professionally with noise and
signal analysis, I looked to the tools that I used
every day for years. Spectrum analysis is one of them.
It's just a measurement tool, not abstract theory.
When I was in the biz, the instruments cost thousands
of dollars. Now it's free for the downloading.
I believe that a lot of list members would find a
simple cheap system for detecting knock very
accurately on any motor a useful tool. Maybe you too.
I'll share whatever I find with the list, if there's
any interest.
Even if turns out to be BS, at least we will have
found out what does not work, and move on.
Thanks,
Carter
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
------------------------------
Date: Tue, 11 Jan 2000 04:52:37 -0800 (PST)
From: Carter Shore <clshore at yahoo.com>
Subject: Re: DIY_EFI Digest V5 #15:Knock Sensors
Ouch!
Geez Grumpy, gimme a break. I was replying to the
original post by brucep at ptd.net, not to your reply,
(got my Bruce's mixed up).
You've probably forgotten more than I'll ever learn on
this subject, and I appreciate the fact that you are
willing to share it with us.
But bear with me a second. I'm facing a similar
problem to the dyno-building Bruce (he is testing
tractor motors). The problem is that no one has
applied knock sensors to my engine (at least not the
manufacturer). Maybe there's a KS that will work,
maybe not. I've seen a spec sheet for Ford KS that
specifies the resonant frequencies for some, but not
for any other manufacturers.
Since I have worked professionally with noise and
signal analysis, I looked to the tools that I used
every day for years. Spectrum analysis is one of them.
It's just a measurement tool, not abstract theory.
When I was in the biz, the instruments cost thousands
of dollars. Now it's free for the downloading.
I believe that a lot of list members would find a
simple cheap system for detecting knock very
accurately on any motor a useful tool. Maybe you too.
I'll share whatever I find with the list, if there's
any interest.
Even if turns out to be BS, at least we will have
found out what does not work, and move on.
Thanks,
Carter
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
------------------------------
Date: Tue, 11 Jan 2000 08:32:54 -0500
From: "jtyler" <jtyler at ga.prestige.net>
Subject: Re: TWM & GMECM
Well it certainly pays to ask first. Thanks a bunch.
I could always go to a crank wheel later after all the otherstuff
is sorted out, but for street use I certainly don't need to.
I just wanted to eliminate the dist if possible.
So back to the Crane. What electrical input is the ecm looking for
from the trigger wheel?
Do I build a circuit to condition the Crane box output to the GM ecm,
or do you need to make a new driver for the optical sensor itself and have
it trigger the ecm directly? Has someone been down this path...sounds like?
If you can send me the wheel drawing that would be great. If a fax
is less effort let me know. BTW there is absolutely no rush on this.
I am one of those "Blessed" with too many projects.
Dopey
>------------------------------
>
>Date: Mon, 10 Jan 2000 21:54:10 -0500
>From: "Bruce Plecan" <nacelp at bright.net>
>Subject: Re: TWM & GMECM
>
>Geez, not even in the same league. Protractor and X-Acto knife vs AL, and
>measuring, and figuring out where the notches have to be and slotted for
>enough adjustment. If I owned a machine shop and had the engine on a
stand,
>I'd still go the dissy route
>Grumpy
>
>
>| I like the "cut you own wheel" idea with the Crane, very clever.
>| However, if I am going to go DIS, would it be that much harder to
>| make a wheel for the crank pulley and use some kind of pickup down
there?
>Is there one you especially like? Thanks in advance.
>| Jim
------------------------------
Date: Tue, 11 Jan 2000 09:24:50 -0500
From: "jtyler" <jtyler at ga.prestige.net>
Subject: Re: GMECM and Crank Sensors
For yet another project, is there a nice reliable, relatively easy to mount
crank sensor that interfaces easily to the GM ECM's you favor?
In this case a dist is not an option.
I have provisions to build a mount, make/adapt a crank wheel of some type or
precisely install magnets in a pulley or even a flywheel.
Does the GM DIS have 5 or 6k rpm limits, something I read somewhere
indicated that, but they may have been talking about HEI coils? All this
stuff I am playing with needs to make it
to 6.5K, the race app at least 8500.
Dopey
>about the DIS, I'll scan a diagram showing the notches/offset/which notch
>| >fires which coil pack etc..
>| >Grumpy
>
>------------------------------
------------------------------
Date: Tue, 11 Jan 2000 12:11:58 -0600
From: steve ravet <sravet at arm.com>
Subject: Re: Knock sensor on Dyno
> Date: Mon, 10 Jan 2000 15:00:32 -0800 (PST)
> From: Carter Shore <clshore at yahoo.com>
> Subject: Re: DIY_EFI Digest V5 #14:Knock sensor on Dyno
>
> Bruce,
> I believe that the sensors are built to be sensitive
> to specific frequencies, to minimize false trigger,
> etc. In other words, they are specific to a given
> engine.
>
> I have been working with freeware audio spectrum
> analyzer program that uses the sound card on a PC. By
> connecting a wide band microphone to the motor, and
> then simulating knock (resembles pounding on the block
> with a hammer or broomstick), the characteristic
> frequencies of a given motor can be determined. The
> resonant frequencies show up as spikes. If you can
> safely induce actual knock in the running motor, even
> better results.
>
> Using that info, the PC software can be set up to look
> for knock signals for that specific motor.
>
> All freeware, just need to bolt on a microphone
> (guitar mic?) Save the results on a floppy.
>
> YMMV, I'm just playing with it right now.
Carter -- what is this software called and where is it available from?
This is very interesting.
- --steve
- --
Steve Ravet
steve.ravet at arm.com
Advanced Risc Machines, Inc.
www.arm.com
------------------------------
End of DIY_EFI Digest V5 #16
****************************
To subscribe to DIY_EFI-Digest, send the command:
subscribe diy_efi-digest
in the body of a message to "Majordomo at efi332.eng.ohio-state.edu".
A non-digest (direct mail) version of this list is also available; to
subscribe to that instead, replace "diy_efi-digest" in the command
above with "diy_efi".
NOTICE: This communication may contain privileged or other confidential information. If you are not the intended recipient, or believe that you have received this communication in error, please do not print, copy, retransmit, disseminate, or otherwise use the information. Also, please indicate to the sender that you have received this email in error, and delete the copy you received. Thank you.
More information about the Diy_efi
mailing list