 Another spark plug thread …, WR5DC+ plugs in an RS Spec 2.7l 914/6 |
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| Rufus |
 May 17 2022, 11:19 AM
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Member  Group: Members Posts: 314 Joined: 8-April 06 From: Central NC Member No.: 5,840 Region Association: None 
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I’m having trouble keeping the Bosch WR5DC+ (7992) plugs in my 914/6 from fouling.
The engine is an RS spec 2.7l except with Webers & more aggressive cams w/ faster acceleration ramps. I’m thinking the operating conditions are causing the problem; frequent moderate to heavy traffic, numerous traffic lights, and 45 mph speed limits half the time. Despite the CDI ignition, keeping revs @ 2000 at traffic lights, and rpm above 3000 while moving, the plugs foul quickly. Planning to change to the next step hotter plug … WR6DC+ (7995) and see what happens. Comments? Anyone have experience w/ a similar engine configuration? Feeling like even driving on open roads w/ 60 mph speed limits the “5” would be too cold. |
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Posts in this topic
Rufus Another spark plug thread … May 17 2022, 11:19 AM
slivel I ran these when it was track only:
Spark Plugs: ... May 17 2022, 11:53 AM Steve
I’m having trouble keeping the Bosch WR5DC+ (79... May 17 2022, 12:03 PM john77 Same as Steve, I've been running NGK BP5ES in ... May 17 2022, 12:24 PM Rufus Thanks for your input, guys. Based on that, the Bo... May 18 2022, 01:50 PM
Steve I’m interested in checking the idle A/F ratio. S... May 18 2022, 02:56 PM Rufus Excellent! Thanks Steve. May 18 2022, 03:13 PM  |
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