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Sun Dwell Tach |
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smfulle 
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Sponsor Member Joined: 16 Sep. 2010 Location: Ogden, Utah Status: Offline Points: 4503 |
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 Topic: Sun Dwell TachPosted: 17 Nov. 2018 at 6:17pm |
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I get excited about the silliest things.
The old dwell tach that I got in high school (1970s) with green stamps that I won in a raffle from our football team fund raiser, quit. Found this beauty on eBay still in the box with the tune up manual. It looks like it’s never been used.   .
Edited by smfulle - 17 Nov. 2018 at 6:19pm |
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mbullism
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Posted: 17 Nov. 2018 at 6:35pm |
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I'd need to take exception to that being the silliest thing, lol... looks like a great find
 
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1946 CJ2A #69750 - "Plowshare"
2016 JK unlimited (Hers) 1969 Kaiser CJ5 (sold) Analog spoken here.... |
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RICKG
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Posted: 17 Nov. 2018 at 7:13pm |
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That is nice Stan- makes my Actron chi-com blush
 Any dates On the tool or lit?
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I never met a mule I didn't like!
MC51986 "OD MULE" DOD 01-52 Keep 'em Rollin' |
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smfulle
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Posted: 17 Nov. 2018 at 8:15pm |
Action is the brand of the one that quit on me. Couldn’t afford a Sun back then. Well probably the green stamp place didn’t offer anything but the Actron, but I don’t remember for sure. No dates on the tool or box. The Tune-up manual is dated 1976.
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Mike F
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Joined: 12 Aug. 2018 Location: Longview wa Status: Offline Points: 470 |
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Posted: 17 Nov. 2018 at 8:31pm |
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My old sears branded sun gave up a couple 3 or 4 weeks back also. I have been using it since 1980. Silly me went to the local NAPA and finally asked where they kept the dwell tachs. I got a pretty strange look out of the counter gal. I went a couple of other places then tried google. Finally put the model no. of what I had in google and bought the same one I had on EBay. Like yours “new in the box”. It came pretty quick. The box looked a little worn but the contents didn’t have a scratch on it. The cords were still banded up. After unraveling everything I hooked it up. Then I found out why it looke like it had never been used. It didn’t work at all. I sent it back the next day and ordered one just like you have. I think I’ll like it just fine.
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Mark W.
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Posted: 17 Nov. 2018 at 9:04pm |
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back in the day when I was running my 67 Chevelle street racing. My grandma for a birth day or Christmas bought me the big Sears Engine Analyzer  some where along the way I lost it. A few years back I found one on eBay with all the accessories for a good price and bought it. Had to go chase down the manual but I got that printed up so I am ready when it comes time to tune CHUG I also picked up on of the nice adjustable timing lights. If you have a conventional distributor you gotta have a good Dwell Tach and Timing light. |
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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Mike F
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Posted: 17 Nov. 2018 at 9:49pm |
That’s what I had. I’ll save it for you. It isn’t working but the cords are good I think.
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Lee (MN)
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Posted: 17 Nov. 2018 at 10:07pm |
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Nice score Stan! 👍 I see it has the “Points Resistance Scale” on it as well! 👍👍👍
Lee😉 |
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LEE
44 GPW-The Perfected Willys 49 2A 67 M715 American Made Rolling History |
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Mike F
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Posted: 17 Nov. 2018 at 11:09pm |
Well I’m excited for you. These are supposed to be good ones.
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48cj2a
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Posted: 17 Nov. 2018 at 11:09pm |
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Nice Score!
I still have my Sun Tune Up Kit with the same Dwell/Tach Meter, Timing light, Vacuum Gauge, Remote Starter Switch, and Compression Tester Gauge.  |
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Art C
47 CJ2A #134955 Project 48 CJ2A #206759 62 L6226 Station Wagon #58167 10900 45 T3-C #191 Project 47 T3-C #12183 http://www.bantamt3c.com http://www.48cj2a.com |
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TERRY
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Posted: 18 Nov. 2018 at 9:49am |
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I still use my Heathkit tune/dwell meter I built 45 or so years ago. Works just fine.
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BOULDER 48 2A
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willyt
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Joined: 31 July 2018 Location: Seneca,SC Status: Online Points: 67 |
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Posted: 18 Nov. 2018 at 9:59am |
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any tips on where to find a 6 volt meter?
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1952 CJ3A (Lil'Green)
early M38A1(Ole Green) 1970 Jeepster Commando |
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48cj2a
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Posted: 18 Nov. 2018 at 10:53am |
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Art C
47 CJ2A #134955 Project 48 CJ2A #206759 62 L6226 Station Wagon #58167 10900 45 T3-C #191 Project 47 T3-C #12183 http://www.bantamt3c.com http://www.48cj2a.com |
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willyt
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Posted: 18 Nov. 2018 at 1:19pm |
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I see a lot of Sun meters for sale but the ads to not state what their electrical operating range is. I google Sun 7601 specifications and still did not find the info I wanted.
Looks like a few of you are using this meter. Is it designed to operate on 6 volt systems?
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1952 CJ3A (Lil'Green)
early M38A1(Ole Green) 1970 Jeepster Commando |
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48cj2a
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Posted: 18 Nov. 2018 at 3:42pm |
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I just looked at my original Sun Manual for 7601. There was no voltage specification listed.
I summarize since you hook this directly to the coil, set the cyl (4, 6, 8), zero the meter it is not 6 or 12 v specific. I further read on the web in a few different threads this should not matter on an analog meter.
Edited by 48cj2a - 18 Nov. 2018 at 3:54pm |
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Art C
47 CJ2A #134955 Project 48 CJ2A #206759 62 L6226 Station Wagon #58167 10900 45 T3-C #191 Project 47 T3-C #12183 http://www.bantamt3c.com http://www.48cj2a.com |
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willyt
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Posted: 18 Nov. 2018 at 8:45pm |
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Thanks for the info Art. My two lead, analog Acron meter states for 12 volt, that’s why I am looking for a meter that will work on 6 volt. The rpm’s seem close but dwell is not close.
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1952 CJ3A (Lil'Green)
early M38A1(Ole Green) 1970 Jeepster Commando |
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Lee (MN)
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Posted: 18 Nov. 2018 at 10:48pm |
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I have a couple different meters, and have used both on 6-12-24 volt systems with NO issues, most automotive ignition systems regardless of input voltage work around 6 volts!, most 12 volt systems were either reduced via a ballast resistor, a resistor wire in the wireing harness or a ballasted ignition coil, same for a 24 volt system.
Lee 
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LEE
44 GPW-The Perfected Willys 49 2A 67 M715 American Made Rolling History |
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willyt
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Posted: 19 Nov. 2018 at 8:13am |
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Lee you answered my next question, has anyone actually used the meter on a six volt system? Thanks.
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1952 CJ3A (Lil'Green)
early M38A1(Ole Green) 1970 Jeepster Commando |
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RICKG wrote: