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Registered User
Join Date: Oct 2010
Location: Southern NH
Posts: 3,553
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Tach tech ? for the 930 guru's
Since I have an aftermarket boost gauge in my 930, I have considered selling the factory tach with boost gauge in it and replacing it with a tach only. I bought an 87 Carrera for the G50, does anyone know if the tachs are compatible?
Thanks in advance Brendon |
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11-03-2011, 07:54 PM
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Join Date: Mar 2008
Posts: 1,082
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I wouldn't see why they wouldn't work.
The signal should be the same except for the charge pressure signal. |
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11-03-2011, 08:07 PM
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Registered User
Join Date: Oct 2010
Location: Southern NH
Posts: 3,553
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That's what I was thinking as well. No use in having a useless boost gauge in the tach.
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11-03-2011, 08:18 PM
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Registered
Join Date: Dec 2001
Posts: 4,313
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If it doesn't, this will fix it. Made by a fellow Pelican, here is the link. Tachometer Adapter
My 2 '75 tachs work with the '86 3.2 but not with the '79 turbo. I bought one of these and it took care of the problem. No affiliation. A few years back I sent my tach to NHW Speedo and had the boost gauge replaced with a clock. I've also seen them replaced with a volt meter.
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Harold '79 930/DP935 (sold) '68 VW 3.3 Turbo Crewcab |
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11-03-2011, 08:33 PM
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Registered
Join Date: Jul 2001
Location: Suntree, Florida, USA
Posts: 2,261
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IMR,
I just went through this. Make sure you look at the connector on the back of the tach. The 4-pin and 8-pin are not easily compatible. The 4-pin and 3-pin are direct swap. I believe the '87 Carrera is an 8-pin and therefore is not compatible with the much simpler (pre-85) 3-pin tach.
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JB - BreitWerks www.breitwerks.com 321-806-8664 Engine Rebuild & Restorations |
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11-04-2011, 02:22 AM
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Registered User
Join Date: Oct 2010
Location: Southern NH
Posts: 3,553
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Thanks guys, maybe I'll be selling both and looking for a mid 80's tach.
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11-04-2011, 05:24 AM
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