|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2016
Location: Pismo Beach, CA.
Posts: 657
|
Simple spark plug question
So i've discovered my car (stock 87 3.2) has Bosch WR8DC+ plugs. I came here to confirm weather they were correct or not, and it looks like i should be running WR7DC's
Any reason my car would have the 8's ? I assume i should switch to back to the 7's. Color of the plug looks good, and in fact they look fairly new.
__________________
1987 911 Carrera Coupe 1987 Buick Grand National 1971 Plymouth Roadrunner |
||
10-12-2016, 08:26 PM
|
|
|
Registered
Join Date: Jul 2016
Location: Pismo Beach, CA.
Posts: 657
|
Well, i think i just answered my own question. Looks like the hotter plug was installed to compensate for a low compression cylinder. #6 is much lower than the rest and the plug is oil fouled big time.
 So, new question,...... why not run the 7's in the good holes, and the 8 in the oil fouled one ?
__________________
1987 911 Carrera Coupe 1987 Buick Grand National 1971 Plymouth Roadrunner Last edited by Tori; 10-13-2016 at 08:21 AM.. |
||
|
10-12-2016, 10:07 PM
|
|
|
Registered
Join Date: Feb 2004
Location: UK
Posts: 2,230
|
We run a 3.2 used on Track Days on an NGK Iridium '8' and it performs very well.
|
||
|
10-12-2016, 11:53 PM
|
|
|
Registered
Join Date: Jul 2006
Location: Charlotte, NC
Posts: 1,964
|
Aren't Bosch and NGK number scales opposite?
Todd
__________________
'81 SC |
||
|
10-13-2016, 04:45 AM
|
|
|
Registered
Join Date: Jul 2016
Location: Pismo Beach, CA.
Posts: 657
|
Quote:
|
||
|
10-13-2016, 06:05 AM
|
|
|
Reiver
Join Date: Nov 2011
Posts: 57,376
|
While you are at it get some good plugs...NGK's
__________________
De Oppresso Liber Strength and Honor 5th Legion |
||
|
10-13-2016, 08:07 AM
|
|
|
 |
| Thread Tools | |
| Rate This Thread | |
|
|
