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MSD Digital-6 Plus, Bosch & VDO Problems
Hello.
I've got the following setup/parts for my 6-cyl Porsche 2,7L '74 engine, with carburetors: - MSD Digital-6 Plus, ignition box #6520 - MSD HVC Blaster coil, #8252 - VDO Tachometer, 10 000 rpm (electronic) - Bosch distributor, with no breaker points (type 3,0L '78 magnetic trigger) My questions: - What type of tachometer adaptor, do I need ? PN8910 or PN8920 ? - Should I CUT or NOT CUT the green loop in the magnetic compensation circuit (shown in fig. 3 on pg 5 in the install. instruction) ? Best regards, Urreg/ Porsche 916 Replica |
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03-02-2004, 11:42 AM
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Join Date: Mar 1999
Location: Vancouver,Wa.
Posts: 4,457
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The 3.0L dizzy turns the opposite direction of the 2.7L. I use the
74 euro spec dizzy (same as the RS MFI motor). They are still available new....bout 300 bucks. I use the 6AL MSD + high vibration coil. Magnecore 8.5mm wires are good for making the electricty go where it's supposed to. The early tachs don't need the adaptor.....73 & older....for sure....not sure about later ones. If yours is the "big wires" tach, you'll prolly be OK without the adaptor. Haven't a clue bout cuttin' the wire.
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JPIII Early Boxster |
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03-02-2004, 12:45 PM
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Hmm...
I'll uppdate my question after checking, exactly what type of Bosch distributor and tachometer I've got ? Thank You for the fast answer ! /Urreg |
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03-02-2004, 01:21 PM
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Got this answer from MSD (Joe LaPille) and will try this ASAP.
"Sir, If the distributor is an actual magnetic pick up triggering the box is off of the magnetic pick up then you will need the 8920 adapter. You do not need to cut this if this is a factory magnetic pick up. Thanks, MSD tech" |
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03-02-2004, 11:46 PM
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Porsche 916 Replica
