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Petronix or MSD coil for a 964 motor?
On my Rat Rod I am going through the ignition system. I know everyone says the currently available Bosh coils are junk. Just curious why no one seems to use popular canister coils like an MSD, Petronix, etc that are very well respected in the American iron world?
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Chris - Insta @chrisjbolton 1975 911s Insta: @911ratrod steel wide body, 3.6 conversion 1989 911 Carrera 25th Anniversary Ed (5th from the last car to ever leave the original Porsche factory assembly line) 2001 996 Turbo - ~54k miles |
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05-17-2019, 01:43 PM
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Join Date: Jul 2013
Location: South East England
Posts: 1,689
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You’re fine Chris. The much maligned Bosch coils are only fitted to engines with CDI. That’s 69 - 83 and Turbos to 89. Your 964 has inductive coils, completely different animals.
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05-17-2019, 02:34 PM
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Location: Missouri
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The Bosch Silver Coils (Made In Brazil) are junk, only time my car has been flat bedded was because of one of these, brand new coils..most 964 owners aware of the problems with the Silver coils are converting to the 993 coil pack
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I think that maybe I'm dreaming.. |
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05-17-2019, 03:06 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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I've been converting 964s to use the 993 twin E-coils. Just order a couple of new ends for the coil wires to fit the new coils, and it's basically a direct swap.
Coil packs: 993.602.071.01 (Quantity 1) Could wire ends: 928.602.557.00 (quantity 2) rubber protection caps: 993.602.801.00 (quantity 2)
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 Last edited by Tyson Schmidt; 05-17-2019 at 03:19 PM.. |
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05-17-2019, 03:14 PM
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Location: South East England
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Quote:
It’s understandable that the small silver CDI coils are prone to failure since they deal with 400V on the primary winding. Inductive coils like the 964 only handle 12V so there really is no excuse for failure!
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05-17-2019, 03:18 PM
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Join Date: Feb 2014
Location: Lomita, CA
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Quote:
and for a longer duration (5-10X the CDI spark).
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Dave |
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05-17-2019, 05:49 PM
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911S Rat Rod
Anni
BatTurbo
