jhbrennan

997.1 owner's manual calls for 96 ft lbs. subsequently updated (not sure when, maybe 2012) to 118 ft lbs. The owner's manual for my GTS says 118 ft lbs.

Wayne Smith

Not meaning to beleaguer the issue, but lately I've read things that make me wonder if the 96 value was with anti-seize and the 118 was without.

The Internet is a wonderful device, but sometimes it leaves you wondering what to filter out and what to believe!

I grew up with salt on the road and a tube of anti-seize in my pocket. It feels wrong to not use it. But I'm finding more and more things that make me feel it has fallen out of favor. I got the second to last bottle of it at O'Reilly's the other day and the help behind the counter couldn't direct me to it (under the adhesives).

When I recently removed my rear tires the first lug felt loose, so I pulled out my old analog torque wrench (with deflection rod) and found they were all at around 50 lb ft. Did they loosen, or did the dealer put them on that way? One more thing to put on the monthly check list. It does appear that white grease was used on the threads - there is some residual ... On some threads.

BTW ... No vibration or other obvious problems on account of this low torque value (DD, not track).

There are many days I wish Haynes, or someone, had a simple service manual for the 997.2! I've evolved into an older guy based on older ways! Life extracted me from my love of cars for many years and I am trying to correct that as a part of my preparation for retirement. I want to learn what has changed during my absence. Thanks for all the input.

Also: My previous comment on hardness of the wheel affecting the required torque WAS tongue in cheek ... a reflection of some of the minutia that seems to go along with being a Porsche owner! I'm infected with that as well!

jhbrennan

Both the old spec and the new spec call for the use of Optimolly anti-seize.

Wayne Smith

Thanks for the clarification. My fronts were at 95 while the backs were around 50. Almost all lug bolts appear to have some lithium grease on them. A quick monthly torque check is simple enough until I get used to what the car needs! I suspect the rears simply were not torqued correctly to begin with. I read the Manual the night I picked up the car last September. Probably should read it again!

wheeler

I picked up one of these beam style torque wrenches recently... http://www.tooltopia.com/precision-instruments-c3fr250f.aspx

Nice thing is it can be stored in whatever setting you use the most. Vs the twist style that should be unloaded before putting away. Pretty easy to just leave it set and check them quickly.

S2000_Europe

I have see that this set up is very common. Why? wont 7mm/15mm set up add further understeer that already the 997 has?

StormRune

Interestingly, I drove pretty aggressively in the same curves in the same conditions before and after installing my spacers wondering about the same thing. I could detect no difference in handling (of course I'm not a seasoned racing professional either). I think most of us do this solely for the more aggressive look. And I know what understeer feels like since my C4 did it a lot both before and after its spacers as well.

Feelgood MD

Agree with all the downsides, plus to add one more:
-Weight. Spacers add unsprung weight which negatively effects the handling of the car. In fact, weight reduction is the primary advantage of the PCCB rotors which cost $6,000 EACH. They don't really provide any better braking performance (60mph-0mph is basically equivalent to the reds). So what you're paying for, in addition to yellow caliper bragging rights, is weight reduction. Spacers, on some small level, are counter to this.

One more upside (albeit somewhat theoretical):
-Center of gravity. By widening the track, the COG is relatively reduced. Whether this has any real-world benefit is arguable, but since Porsche dropped the mounting of the 997.2 engine 10mm lower than the 997.1 engine, it at least must be on some very smart German engineer's radar.

Disclaimer: I'm about to add spacers to my 997.1S with PCCB and Damptronics b/c I hate the tucked in look. In fact, that's what led me to this old thread. However, if anyone asks, I'm sticking to the lower COG as my rationale

imnotracerx

I have 30mm spacers in the rear and 15mm up front. C4S wide body. Track days spirited touring no issues.




15mm rear 0 front




30mm rear 15mm front.