Author Topic: S6 sump plug  (Read 5718 times)

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Offline Austinpike

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S6 sump plug
« on: 24 Jan 2008 at 12:04 »
On my S6 the threads have striped out of the alloy sump hole. Can any one suggest a good repair, ie over size and re thread or insert some kind of threaded boss ?

Offline Edin

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Re: S6 sump plug
« Reply #1 on: 24 Jan 2008 at 16:39 »
Hej Austinpike
Use Time Sert insert an exelent solution,- your can have informarion and nearest dealer on Google. Good luck
Kind regards Edin DK.

Offline Boxer

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Re: S6 sump plug
« Reply #2 on: 25 Jan 2008 at 09:46 »
Hello Austinpike,
for a good comparison of TimeSert vs Helicoil see: http://www.advrider.com/forums/showthread.php?t=105094
Kind regards Rudolf

Offline Austinpike

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Re: S6 sump plug
« Reply #3 on: 26 Jan 2008 at 07:51 »
The plug has a OD of 1" and 20 T.P.I what is it ? as it is not listed on my reference tables, and would I be able to get a repair kit this fine?

Offline eddie

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Re: S6 sump plug
« Reply #4 on: 26 Jan 2008 at 12:05 »
Hi Austinpike,
                      From the dimensions you have quoted, the thread is probably 1" x 20 tpi cycle thread (either British standard cycle thread or CEI). The only difference being the included angle of the thread - British standard had 55 degree and CEI had 60 degree. These threads were in common use in the cycle industry in the early to mid 1900's - with the smaller diameters available in both 20 and 26 tpi - most larger diameters were 20 tpi (as on steering head bearings). Then, in the late 1900's, even the cycle industry went Metric. The main reason for using such fine threads was that with the better mechanical advantage of the fine thread, sufficient pressure could be applied with the relatively small and crude spanners that were usually included in the toolkit. Where alloy castings are concerned, though, a coarser thread is preferred as it would be much less prone to stripping. Regarding fitting a 'Helicoil' or similar insert, I would be surprised if they are available for this size of thread, as there is probably little demand for them. You may have to enlist the help of an engineering firm to make a special oversize tap and a new plug.
                                      Eddie.

Offline Austinpike

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Re: S6 sump plug
« Reply #5 on: 27 Jan 2008 at 05:19 »
Looking at the Time Sert and Helicoil range this 1"x20 TPI is not a option ! over size plug or brass boss seems to be the way to go.