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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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 Posted: Tue Apr 22, 2008 6:12 pm Post subject: Connecting new Autometer tach to MSD box |
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It used to be that you just cut both of the loops to set the tach for a 4-cylinder. But now the new ones you cut one for a 2-pulse 4-cylinder and both for a 1-pulse engine. I'm running a 6AL box.
Anyone help me out with this? May sound basic but I don't know...
Thanks.  |
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rphracing
Samba Member
Joined: March 03, 2005
Posts: 21
Location: socal
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| Posted: Tue Apr 22, 2008 6:46 pm Post subject: |
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| cut both have the same thing in my car |
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stealth67vw
Samba Member
Joined: January 22, 2004
Posts: 1852
Location: Grass Pants, Orygun
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| Posted: Tue Apr 22, 2008 7:07 pm Post subject: |
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_________________
John Bates
JB Machining Services
1967 street Bug 2276 w/ 48 IDAs, 2020lbs with driver
7.76 @ 89.55mph 1/8 mile
12.34 and 108.10 mph 1/4 mile |
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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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| Posted: Tue Apr 22, 2008 7:22 pm Post subject: |
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^ uhhh, yeah. I've got the instrctions. My question is are our engines technically a 2-pulse or a 1-pulse... |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Tue Apr 22, 2008 7:44 pm Post subject: |
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What is tach model number?
Will bet its a "2 pulse" setting that will work for you.
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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| Posted: Tue Apr 22, 2008 8:24 pm Post subject: |
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Kind of what I'm starting to think too. It's a 3911.
Thanks. |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Tue Apr 22, 2008 8:32 pm Post subject: |
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Maybe my "guess" is wrong....
This site and instructions for 3911 says cut both wires....
http://www.egauges.com/pdf/AutoMeter/407j.pdf
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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| Posted: Tue Apr 22, 2008 9:20 pm Post subject: |
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Well that's the thing, there is an old one and a new one. The instructions with my guage are like the pic posted above - a brown and blue loop, no orange. That's why I am confused - because they seem to have changed the electronics but haven't made it clear as to what to do.  |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Tue Apr 22, 2008 11:01 pm Post subject: |
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So cut 'em up till it works right. You can always splice them back together if it doesn't work; they're just wires.
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The Inspector
Samba Member
Joined: November 22, 2003
Posts: 87
Location: Kerrville, Texas
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| Posted: Wed Apr 23, 2008 6:56 am Post subject: |
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call the MSD Tech Line.
They will be more than happy to answer your questions and explain everything to you.
Eliminate the "guessing" ...... |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Wed Apr 23, 2008 8:18 am Post subject: |
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| The Inspector wrote: |
call the MSD Tech Line.
They will be more than happy to answer your questions and explain everything to you.
Eliminate the "guessing" ...... |
Actually the call needs to be made to AUTO METER...
MSD box just supplies the pulse same as dist points would...
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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| Posted: Wed Apr 23, 2008 8:20 am Post subject: |
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| The Inspector wrote: |
call the MSD Tech Line.
They will be more than happy to answer your questions and explain everything to you.
Eliminate the "guessing" ...... |
Yeah, yeah, yeah. Next thing I know you're going to be hagging me to pull over to ask for directions!  |
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Corwin
Samba Member
Joined: March 29, 2007
Posts: 798
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| Posted: Wed Apr 23, 2008 10:45 am Post subject: |
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Just called Auto Meter and it needs to be set for a 2-pulse system. So, only cut the one wire.
FYI - anyone who runs across this problem. |
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Skate
SBS Hit Squad
Joined: March 24, 2004
Posts: 995
Location: Acton Ca.
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| Posted: Wed Jun 24, 2009 9:53 pm Post subject: |
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What if your not running msd? What is the pulse for a stock distributor coil combo?
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SBS NUMBER FOURTEEN 58.5 |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Thu Jun 25, 2009 7:00 am Post subject: |
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MSD box should not be issue because it triggers on distributor and so if you use dist and "2 pulses" to get correct rev count without MSD box, then it will be same WITH MSD box....
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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Skate
SBS Hit Squad
Joined: March 24, 2004
Posts: 995
Location: Acton Ca.
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| Posted: Thu Jun 25, 2009 7:26 am Post subject: |
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I'm confused, I'm running a stock 1600 with stock ignition. I tried to install the auto meter tach and for some reason I'm not getting a reading. It's really low. I was wondering how many pulses a stock setup has so I can clip the correct loop.
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~~~~~~> LEE <~~~~~~
AIRKEWLD
SBS NUMBER FOURTEEN 58.5 |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Thu Jun 25, 2009 7:46 am Post subject: |
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Is red wire to 12 volts (when key on)...
Black wire to ground...
Green wire to negative (-) side of coil
White wire to instrument lighting circuit...
Did you cut the blue loop at tach?
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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Skate
SBS Hit Squad
Joined: March 24, 2004
Posts: 995
Location: Acton Ca.
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| Posted: Thu Jun 25, 2009 9:11 am Post subject: |
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I got all that, and then I cut the blue loop with no change. Then I was like... Well maybe I need to cut the other loop too so I did and still no change. When the ignition is turned on it goes to zero then when the engine starts it goes back to 1... When I rev it, it barely moves.
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~~~~~~> LEE <~~~~~~
AIRKEWLD
SBS NUMBER FOURTEEN 58.5 |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Thu Jun 25, 2009 10:24 am Post subject: |
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You sure tach trigger lead is on points side of coil? Any splices in wires ? Are they good?
Call Auto-Meter tech support... 815-889-0801
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
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Skate
SBS Hit Squad
Joined: March 24, 2004
Posts: 995
Location: Acton Ca.
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| Posted: Thu Jun 25, 2009 10:43 am Post subject: |
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I ran all new wires, possibly the ground is no good. I was realy just wondering if stock is 1 pulse or 2...
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~~~~~~> LEE <~~~~~~
AIRKEWLD
SBS NUMBER FOURTEEN 58.5 |
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