 Will a silver dot tac work with a 2.2 e 911 motor? |
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| pete-stevers |
 Jan 13 2022, 04:22 PM
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#1
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Shinee Side Up Prep and Paint  Group: Members Posts: 2,672 Joined: 10-October 04 From: Abbotsford,BC, Canada Member No.: 2,914 Region Association: Pacific Northwest 
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I am just wondering if a silver dot tac will work with a 2.2 e six
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| 914Sixer |
Jan 13 2022, 04:32 PM
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#2
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914 Guru Group: Members Posts: 9,453 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Only a 911 tach will work, 69-73 were silver dot.
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| mepstein |
Jan 13 2022, 04:52 PM
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#3
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914-6 GT in waiting Group: Members Posts: 20,587 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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It will work fine if you buy a tach-adapt. They are about $70 and a genius little piece.
Attached thumbnail(s) 
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| brant |
Jan 13 2022, 04:52 PM
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#4
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914 Wizard Group: Members Posts: 12,167 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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I might have this backwards...
but a 4 cylinder tach will read 2/3rds of the rpm of a 6cylinder tach so 4000 rpm when the motor is actually at 6000rpm. |
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| Retroracer |
Jan 13 2022, 05:00 PM
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#5
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Senior Member Group: Members Posts: 655 Joined: 7-July 13 From: Bend OR Member No.: 16,100 Region Association: Pacific Northwest
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A stock 914-4 tach can be made to work with a 6 cylinder engine by using one of these:
https://ashlocktech.com/tach-adapt-1 ...but your indicated redline will be different from actual, unless you modify the fascia. Other options based on modifying your existing tach or replacing the tach core are available too, and range in price accordingly. - Tony |
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| mepstein |
Jan 13 2022, 05:52 PM
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#6
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914-6 GT in waiting Group: Members Posts: 20,587 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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And the owner of the device is a member here. (IMG:style_emoticons/default/beerchug.gif)
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| ClayPerrine |
Jan 14 2022, 08:37 AM
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#7
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Life's been good to me so far..... Group: Admin Posts: 16,542 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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A 2.2E 911 motor uses a CD ignition. The tach output from it is low voltage, and won't trigger the 914 tach designed for a kettering ignition with a high voltage tach output.
Better to find a 73 911 tach. It will work with the CD box ignition, and will display correctly. Clay |
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| Mark Henry |
Jan 14 2022, 09:56 AM
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#8
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Pete if you want to send it to me, I'll put a new driver board in and calibrate it correctly.
PM me if interested. |
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| Shivers |
Jan 14 2022, 10:05 AM
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#9
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Senior Member Group: Members Posts: 3,335 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
QUOTE(Mark Henry @ Jan 14 2022, 07:56 AM)  Pete if you want to send it to me, I'll put a new driver board in and calibrate it correctly. PM me if interested. Cool. *Note to self |
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