99 boxster clutch

[Vza]

Hi, Doing my clutch and new DM flywheel on 99 boxster base.Few questions.

Torque for flywheel factory manual says 18 ft lbs + 90 degrees Bentley says 19+120 degrees think I'm gona go w factory manual..???

Torque for 3 bolts for throw out bearing guide tube Bentley has nothing factory manual says 26 ft lbs I went with this and used Loctite wicking threadlock

Factory manual says only grease input spline does anything else need to be greased in there??

thanks

[BFeller]

I belive a spot of lithium grease goes on the pivot for the throwout arm pivot.

[maytag]

Always, always always use the torque setting provided by whoever supplied the fasteners. If they didn't tell you, I'd default to the factory manual. (and if you're reusing fasteners, then you're on your own.... I wouldn't in this application)

[truegearhead]

Originally Posted by maytag

Always, always always use the torque setting provided by whoever supplied the fasteners. If they didn't tell you, I'd default to the factory manual. (and if you're reusing fasteners, then you're on your own.... I wouldn't in this application)

And don’t use any lubricants. They’ll change the torque value of the hardware drastically.

[JFP in PA]

Originally Posted by truegearhead

And don’t use any lubricants. They’ll change the torque value of the hardware drastically.

Nonsense. USING the proper lubricant will give you the most accurate torque readings.

[Boxstard]

Originally Posted by JFP in PA

Nonsense. USING the proper lubricant will give you the most accurate torque readings.

It depends on how the torque spec was originally designed, with lube or dry.

For example, Porsche does not specify any lube on wheel lug bolts, so lube would cause actual torque above the spec.

[JFP in PA]

Originally Posted by Boxstard

It depends on how the torque spec was originally designed, with lube or dry.

For example, Porsche does not specify any lube on wheel lug bolts, so lube would cause actual torque above the spec.

I would suggest you read ARP’s white paper on the subject of reproducible torque levels and how they cannot be achieved without proper lubrication. The random scatter of torque readings without lubricant demonstrates why ANY fastener with a torque setting needs to be correctly lubricated in order to achieve the desired clamping loads.

[Anker]

Porsche does specify that you should use no seize on the wheel bots and that you should be careful not to get any on the conical part that connects with the wheel.

[JFP in PA]

Originally Posted by Anker

Porsche does specify that you should use no seize on the wheel bots and that you should be careful not to get any on the conical part that connects with the wheel.

We use nickel anti seize on every Porsche wheel bolt that passes through the shop, have for decades, and have never had any issues. We have, however, seen multiple cars that were in for the first time with severely galled wheel bolts from not using anti seize, and which required us to make remedial repairs to the hubs and replace the wheel bolts with new.

We also do this on every car that passes through the shop, from VW's to Ferrari's, including center lock wheels.

[Boxstard]

Originally Posted by Anker

Porsche does specify that you should use no seize on the wheel bots and that you should be careful not to get any on the conical part that connects with the wheel.

Okay I was not aware of this... Somehow I though Porsche changed recommendation from lube to dry.

I lubed lug bolts for the last 3 decades with all other cars I owned and maintained, mainly Europeans incl. 914 and 3 generations of SAABs, with no issues. It is rather recentlly for the last 2 years of my Boxster ownership that I just clean bolts with a wire brush and dry-torque, assuming the 96 ft-lb spec based on dry especially as it seems relatively higher than typical 80 ft-lb spec. with other OEM's in my experience. I daily drive mine through MI winter and no corrosion issues when I change wheels/ tires twice a year.

Anyway I guess I'd go back to lube if that's what the P-doctor orders.

[Boxstard]

Sorry OP asking about the clutch, did not mean to hijack the thread with lug bolts...