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Join Date: Jul 2008
Location: Central Washington State
Posts: 4,376
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Weird Bosch plugs
Some of you may be following my recent escapades on valve adjustments and ignition timing.
Here's one for you: I pulled the spark plugs today for the first time since taking ownership of this 930, and they look good other than some gap adjustments. Not your standard W3DPO plugs (NLA), instead they're Bosch WR8DS...not something you would find in a 930, but supposedly in a 944 or 928. I've run NGKB8ES plugs in my past 930, as well as stock W3DPO's. Not meaning to start another spark plug thread, just found this curious. Anybody have any experience with these? I'll probably replace them just because I'm lately into spending money.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ. |
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03-19-2025, 01:41 PM
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What is the Bosch equivalent for the NLA W3DPO's? How do the other plugs stack up?
Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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03-19-2025, 02:52 PM
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Here's an old thread on the topic and hey...I'm one of the commenters! Imagine that. But no reference to this weird WR8DS plug
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/757601-better-spark-plug-than-bosch-w3dpo-stock-3-3l.html&ved=2ahUKEwjXk4vbwpeMAxXKyOYEHcvcLCgQFnoECDkQAQ&usg=AOvVaw24UcyFPEMFROS97V9cokXa
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ. |
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03-19-2025, 05:47 PM
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https://www.boschsparkplugs.net/bosch-wr8ds-0242229537-silver-spark-plug
Bosch silver spark plugs are engineered to improve performance in any sport or racing application. Specifically engineered for colder racing applications, particularly those that run at full throttle, and not for traditional automotive use as they would quickly foul out. Silver enhanced center electrode conducts electricity better than copper or nickel. Silver has a lower melting point than nickel, so these plugs are engineered for high performance, not long life, and have a shorter life span. Also discontinued. I am using W3DPO also Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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03-19-2025, 07:17 PM
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Join Date: Jul 2008
Location: Central Washington State
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Quote:
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ. Last edited by mark houghton; 03-20-2025 at 07:35 AM.. |
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03-20-2025, 04:30 AM
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