When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Using anti-seize on plugs today isn't generally recommended since it lubricates them and causes them to be mis-torqued... since the torque recommendations are based on unlubricated threads. The threads on most quality modern plugs are already coated with a material to help reduce seizing. A Google search will reveal plenty of agreement with that.
Here's a quote from one of those articles: "Many spark plug manufacturers have issued statements saying that using anti-seize on spark plugs in 2018 is not advised. For example, NGK, Autolite, Champion, Bosch, Denso, AC Delco, will all tell you not to use anti-seize with their modern coated spark plugs."
OK. Point well taken. I quit doing this myself 15 years ago, but threw that in based on what I knew about plus them. The anti- seize coding was not mentioned in my conversation with service shop owner. I thought I had seen some Permatex anti seize browsing in a store recently and incorrectly assumed it is still used on Bosch plugs for Porsche.
Sorry. I had seen this and assumed these were the same Bosch plug threads. But it does advise to use only a small amount of anti-seize compound.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.boschautoparts.com/documents/101512/0/0/1afcc55b-5904-4064-8275-8d0d50d9ef2a&ved=2ahUKEwjI04blodjfAhUkVt8KHUdYAiQQFjAIegQIBBAB&usg=AOvVa w28VdAOI8odfDc_8bpGXdHw
I will say this - if the modern coated plug threads are seizing up that quickly nowadays and are still a problem, I would expect some new tech to come along to prevent this problem. Apparently the new coated threads are not that great...
Using anti-seize on plugs today isn't generally recommended since it lubricates them and causes them to be mis-torqued... since the torque recommendations are based on unlubricated threads. The threads on most quality modern plugs are already coated with a material to help reduce seizing. A Google search will reveal plenty of agreement with that.
Here's a quote from one of those articles: "Many spark plug manufacturers have issued statements saying that using anti-seize on spark plugs in 2018 is not advised. For example, NGK, Autolite, Champion, Bosch, Denso, AC Delco, will all tell you not to use anti-seize with their modern coated spark plugs."
Generally there is an accepted percentage of dry thread torque when applying torque to wet threads because anti seize. Maybe too many people have been getting this antiseize all over the plugs and goobering things up. 23nm is recommended for the plugs dry so 17 lbft.
The WSM procedure for plug replacement on a 991 Turbo involves lowering the engine to get to the plugs. I’m really looking forward - not - to that next year. I don’t have the procedure for the .2 non-T-turbos but expect it to be multi-hour.
I changed the plugs on the 981 a few weeks ago. The plugs made squeaky noises coming out and did not turn smoothly at all. This on a 981 that’s seen no salt, rarely rain and only a few k-miles per year. Also keep in mind that the coils have a moisture seal that keeps the plug wells dry so there’s no rust, dirt, or moisture. The sound and feel of the plugs coming out said “seizure waiting to happen” to me.
WSM be-damned, I put a very, very small amount of anti-seize on the new plug threads. On the 981 the plugs have to be torqued by feel anyway as there is no room for direct use of a torque wrench (I have 10 torque wrenches of varying size so when I write ‘no room’ I really mean it.) If you tighten enough fasteners with crush rings you get a feel for when the ‘crush’ begins. I would expect the engine location on the 991.x to enable proper use of a torque wrench though.
I had my 30,000 mile service done today, at the dealer. The spark plugs were $451.50 labor / $214.92 for plugs. Considering the level of service i get, and last minute weakend apt, i’m thrilled.
I had my 30,000 mile service done today, at the dealer. The spark plugs were $451.50 labor / $214.92 for plugs. Considering the level of service i get, and last minute weakend apt, i’m thrilled.
Wow!! That’s awesome, I’m going to give another dealer a call for a quote. Thank you for that! I’m at 28k so I want to get it done soon!
Wow!! That’s awesome, I’m going to give another dealer a call for a quote. Thank you for that! I’m at 28k so I want to get it done soon!
Ryan- I tried sending you a private message, but your inbox is full and the message cannot be sent.
I am wondering how you fared with pricing in having that 30K service done with spark plugs?
Would you be able to post/send your service receipt (feel free to black out private information)? Porsche dealer is giving me an especially heinous price quote for this work, and I thought it would be good to accumulate some sample price quotes.
Ryan- I tried sending you a private message, but your inbox is full and the message cannot be sent.
I am wondering how you fared with pricing in having that 30K service done with spark plugs?
Would you be able to post/send your service receipt (feel free to black out private information)? Porsche dealer is giving me an especially heinous price quote for this work, and I thought it would be good to accumulate some sample price quotes.
Thanks,
David
Hi David, sorry you can PM now I didn’t know it was full. I had two completely different prices for spark plug replacement. One dealer (Westmont Porsche) quoted me ~$1800 and the other dealer (Orland Park Porsche) quoted me ~$850. Not sure how there was that much difference but I went with Orland and the work was perfect. I can find my service record if you PM me I can get it over to you as soon as possible.
My 991.2 was built in June 2016. I bought it brand new in June of 2018. Now it has 14,000 miles on it. It's coming up on 5 years since build date and 3 years since warranty start.. If it were yours, when would you replace spark plugs?
01-05-2019, 10:44 PM
