Rick Lee

I know what Beru says. What do you guys think? I'm doing this job tomorrow.

chris walrod

While I typically apply anti seize (copaslip) to anything that threads into aluminum, I trust the factory recommendations not to on spark plugs.

Have fun

kkim

X2

Rick Lee

Just came up from prepping the car. This job ain't so bad. I already have a carbon fiber heater bypass tube, so that's easy enough to get out of the way. Took the right muffler off - easy. Then I removed the clutch dust tube and bracket and the big rubber boot to the right heat exchanger that covers up cyl. #1 lower plug. Turns out two hex screws from the right bank sheet metal were missing, so I'm wondering who did that. Engine has only been out once and I don't believe that sheet metal would need to have been removed for it. Anyway, I just spent an hour and a glass of Maker's Mark from jacking up the car to washing my hands. Wasn't too bad at all. A few weird angles and I'm glad I have a lot of good tools. Plugs R&R tomorrow instead of church - ha ha.

chris walrod

No worries Rick, 11 are easy, its just that #6 upper that can be a challenge. Do the hard one first, the rest will be a piece if cake!!

Rick Lee

Oh, I'd have it no other way. #6 intake is first tomorrow after I'm back from the gym and the coffee is done.

kkim

x2 x2

Ray Calvo

I lubed plugs till I had one jam in the heads of my old '84 Carrera. Plug was in there so tight it snapped in ahlf when trying to remove it. Required engine removal and cylinder head removal, then drilling out the old plug. Since then haave not lubed plug threads on the old '84 or present 993.

I've uploaded photos to this site but can't see instructions on how to find them again! Uploading photo instructions are clear; how to access them again info I can't find.

AOW162435

Rick,
Are you done yet?








Andreas

Edward

Rick,

I would not. But IF you decide to, use veeeery little on the threads, and I have had good results in the past with copper-based anti seize (I think mine is from LubroMoly).

Edward

Rick Lee

Ok, just spent a total of two hrs. on #6 intake plug. That included a trip to Sears to get some locking 3/8 drive extensions. I found the duct tape method to be useless. Took me less than 10 min. to do cyl. #4-5-6 exhaust. Old plugs are two prong and don't look that bad for 49,500 miles. I'm probably gonna finish the right intake and button it all back up and then move to the left side. This ain't too bad. Porsche could have given 1" more clearance in a few places and it would have made a world of difference. I sure hope my new three pronged plugs are gapped right. It's pretty tough to use my disk gapper tool to measure them. Decided against lube.

Chris L

Richard,

Aren't you about 10k miles early on the plug change? Or do you think they weren't changed at 30k?

Chris.

Mike J

That question came up at the 911 engine rebuild class. Gerry Wood's answer is that he found that the Bosch plugs seems to use a better alloy for the threaded part of the plug which does not gall or stick on aluminum heads. He does not lube on those types of plugs and has not had any problems. However, on other brand plugs the found the formulation for the metals difference and they have been known to bind. So he recommendation is to stick to Bosch and no lube and it will be okay.

I on the other hand have used a tiny bit of antiseize and it seems to be OK but whom am I to go against 30 years of experience... ;-)

Cheers,

Mike

Rick Lee

I'm positive they weren't changed at 30k miles. Haven't checked the PO's receipt in a few yrs., but since they billed the PO for flushing the clutch slave at the 30k service and DID NOT do it, I doubt they bothered with the plugs either.

Just finished a day of HELL and only got the right bank done. Problems started when I discovered the clutch dust hose totally frayed and beyond salvage. Took about 4-5 visits to local stores before I found something I could use. That did the trick, but buttoning things up was no fun. Why did Porsche make it like that? Those tiny sheet metal and clutch dust pipe bracket screws are tough to reach. Anyway, I figure the left side will be a piece of cake. Since it's still salty and slushy around here, I don't need to drive it anytime soon, so I'll bang out the left side over an evening or two this week.

Rick Lee

Some lovely photos. This is the clutch dust tube and it looks far better in this photo than it was. Totally unreusable.