Upper engine bolt mod

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John Brooks
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Location: Whidbey Island WA.

Upper engine bolt mod

#1 Post by John Brooks » Wed Aug 14, 2019 12:59 pm

Pulled a friends 62B motor for a clutch change yesterday. The upper bolts were packed with 25 years of oil condensate and grease. They gave me the me the most trouble accessing them from below, I have ever had on over 50 years of these tubs.. After we got the engine out we modified the bolt heads with a roll pin as below so they won't spin. Just a blind hole and a pressed in pin. I know there is several ways to modify the bolts, but this was pretty simple and no welding. A socket will still grip the head but not required any more. If you have a motor out I highly recommend this mod so when you get old you can remove all four nuts from the schrod side.
engine bolt 2.jpg
Simple blind hole and pressed in roll pin. holds the bolt
engine bolt 2.jpg (324.6 KiB) Viewed 94 times
engine bolt 1.jpg
engine bolt 1.jpg (324.14 KiB) Viewed 94 times
John Brooks

62 Roadster
66 912
getting pushed around in porsches since 1965

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356 Fan
Posts: 977
Joined: Sat Dec 21, 2013 12:09 pm
Location: Belfast, Northern Ireland

Re: Upper engine bolt mod

#2 Post by EricMcKinley » Wed Aug 14, 2019 10:42 pm

Ab Tiederman sold these for many years.

I have them on my engine.

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