Spark plugs for SC'D 87 S4
05-29-2007, 11:12 AM
#16
Rocket Pilot
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Originally Posted by Hacker-Pschorr
Whoops - stock plugs on the early OB's are WR8DC. Had those on the mind.
Like I said with the NGK conversion, some site list the BPR6ES as a replacement for both the 6 & 7 Bosch plug. They must fall somewhere in the middle of each other. You will not hurt anything running too cold of a spark plug. Just check them often & if they start to foul, go one hotter.
Did you fix your running problem?
Like I said with the NGK conversion, some site list the BPR6ES as a replacement for both the 6 & 7 Bosch plug. They must fall somewhere in the middle of each other. You will not hurt anything running too cold of a spark plug. Just check them often & if they start to foul, go one hotter.
Did you fix your running problem?
05-29-2007, 11:17 AM
#17
Administrator - "Tyson"
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Originally Posted by Kevin Michael
BTW fellas, should of mentioned it before, I pulled the plugs and 3 were nice and tan, and the other 5 were sooty black. Makes no sense to me,any of you ever seen this?
Kevin
Kevin
This is what my plugs looked like with a few bad valve guides / seals allowing oil to drip / get sucked into the engine:
https://rennlist.com/forums/928-forum/158282-why-my-928-is-low-on-power-dyno-also-posted.html#post1556103
After new valve guides & seals:
https://rennlist.com/forums/928-forum/280125-spark-plug-review-pictures-inside-how-do-these-look.html
05-29-2007, 12:28 PM
#18
Drifting
Eric, nice spark plug post! 
Alright, here's another one for you:
(..the first one was for the water manifold idea)
Alright, here's another one for you:
(..the first one was for the water manifold idea)
