Upper engine bolt mod

For those who couldn't care less how their 356 left the factory!
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John Brooks
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Joined: Tue Jul 08, 2008 11:50 am
Location: Whidbey Island WA.
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Upper engine bolt mod

#1 Post by John Brooks »

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.
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Simple blind hole and pressed  in roll pin. holds the bolt
Simple blind hole and pressed in roll pin. holds the bolt
engine bolt 2.jpg (324.6 KiB) Viewed 2189 times
engine bolt 1.jpg
engine bolt 1.jpg (324.14 KiB) Viewed 2189 times
John Brooks

62 Roadster
66 912
84 Cab
getting pushed around in porsches since 1965

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Eric McKinley
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Posts: 1348
Joined: Sat Dec 21, 2013 12:09 pm
Location: Belfast, Northern Ireland

Re: Upper engine bolt mod

#2 Post by Eric McKinley »

Ab Tiederman sold these for many years.

I have them on my engine.

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Dave Wildrick
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Posts: 1953
Joined: Wed Mar 26, 2008 2:10 pm
Location: Houston, TX

Re: Upper engine bolt mod

#3 Post by Dave Wildrick »

Not as classy, but wrapping a small stainless steel hose clamp around the flats works just fine, with the adjustment screw head preventing bolt rotation.
Dave Wildrick
Houston, TX
#10230
64C coupe
65C coupe

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Wes Bender
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Joined: Wed Aug 27, 2008 10:54 am
Location: Somewhere in the Gadsden Purchase, USA

Re: Upper engine bolt mod

#4 Post by Wes Bender »

Careful Dave......they'll think we're both "shade tree" mechanics. Works though.
Some days it's just not worth chewing through the restraints.....

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