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Use of Loctite 242: Advice Sought

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I have to replace all 3 of my tweeting idle pulleys on my 2000 C2.

Wayne Dempsey at Pelican recommends using Loctite 242 on the bolts at installation.

How much does one use to make sure those bolts WILL NOT come out while in use but as importantly, ensuring they WILL come out in the future when dissassembly is required?

Loctite website recommends using several drops. I'm worried this might make the bolt impossible to remove later on. How about a drop-drop? Would that be sufficient to prevent it coming out while in use?

Any advice on how much your folks tend to use in similar applications?

Thank you for your attention!


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In 2012 on my return from California to Texas I spent a non-scheduled night in Winslow,AZ.  The idler bolt backed out and the belt came off, red lights on the dash, pulled over to the shoulder and got the cell phone out.  I finally called 911, she put me in touch with a local tow service.  The service asked me where I was, I told him I didn't know. He suggested seeing if there was a "mile marker"anywhere, as luck would have it there was one 100' behind my car.  I was 12 miles West of Winslow.  A nice young man with a flat bed arrived within 30 minutes and took me and the car to the local Chrysler dealer.  One of the  mechanics couldn't wait to get his hands on the car, within 15 minutes he had the bent bolt and pulley in hand.  We overnighted the parts and I was on my way by 10:00 the next morning.  The dealer treated me fair and I was ready for a $300 tow bill from the towing company, it was $87.00.  If you're going to get stuck on the road, do it Winslow, AZ.  Fairness still reins in some places.


I believe the torque for the idler pulley is 50 ft/lb.  I would also recommend following Wayne's suggestion of using Loctite.  Google the Loctite data info.  Also I've called Locktite techs, they were very helpful recommending a specific product for a specific need.  Locktite has tons of products so it worth reviewing them for specific needs.

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Thanks Ahsai and Creekman!

Appreciate the assistance and the good story.

Most techs love to work on our machines and not necessarily because of the financial gain but because of sound design and challenging work Porsche mechanical represents to them.

I also had positive experiences at non-Porsche entities (VW dealer with experienced techs) so far, for work that I don't feel confident in doing myself.


I got the torque values for these bolts so no problems there.

Loctite 242 is suggested for this repair so I feel confident it is what is required.

I will try to use it sparingly and fellow the few drops advice from Ahsai.



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