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Direct Ignition Spark Plugs
Posted by David Prantl (more from David Prantl) on Mon, 26 Nov 2001 23:30:56
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

Using incorrect plugs in 9000 cars with Direct Ignition (red 4-coil ignition 
module, no distributor) can result in various levels of poor driveability, 
especially at higher boost pressures.

The correct plugs are:

NGK BCPR6ES-11 (NGK stock number 6779) for non-turbo DI cars.
Available at NAPA, Pep Boys, Parts-America, and your SAAB dealer.
Search http://www.napaonline.com/
by NAPA part number NGK6779.

Search http://www.partsamerica.com/
by part number 6779.

SAAB part number 02 44 772 (4-pack).

NGK BCPR7ES-11 (NGK stock number 1095) for turbo DI cars.
Available at NAPA, Parts-America, and your SAAB dealer.
Search http://www.napaonline.com/
by NAPA part number NGK1095.

Search http://www.partsamerica.com/
by part number 1095.

SAAB part number 02 44 459 (4-pack).

Plug gap should be 0.039'

Note:  the '-11' in the plug number means that the plug is pre-gapped to 1.1 
mm (0.043').  This is a nominal value, so it can vary out-of-the-box from 
one plug to the another.  You should reduce the gap on a '-11' plug to 
exactly 0.039'.  The non- '-011' versions of the above two plugs are 
physically identical to the '-011' versions, but are pre-gapped to 0.8 mm 
(0.031').  The non- '-011' plugs should be the same price as the 
corresponding '-011' plugs.  So the alternative plugs are:

NGK BCPR6ES (NGK stock number 2330) for non-turbo DI cars.

NGK BCPR7ES (NGK stock number 3330) for turbo DI cars.

David Prantl
david_prantlno39sdcx6spamx782hotmail.com
'84 900S, 5M, 210kMi, RIP as of 2/98
'89 900, 3A, 116kMi, restored and SOLD on 3/24/01
'86 9000T, 5M, 192kMi
'88 9000S, 5M, 142kMi
'90 9000S, 4A, 136kMi
'93 9000CSET, 5M, 74kMi
'97 9000CSET, 5M, 60kMi
'68 97 Sonett V4, 4M, 76kMi, #000467
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