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flywheel bolts
does anyone have an easy solution to remove the flywheel bolts on a 79 3.0 . how about an easy solution to remove the heat exchangers .
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08-13-2000, 01:46 PM
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When I removed mine, I used a grinder on a few of them. I picked up a torques head at sears for about $6.00. Once the flywheel was removed, I was able to remove the remaining studs without much effort. You might also want to try a pair of vice grips on the head. Remember, you need to replace them once they have been removed. Don't plan on using the same ones.
Steve |
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08-13-2000, 03:57 PM
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Those flywheel bolts are NOT Torx!!! The proper name, though it not seen very often, is 'Polygon Drive' ... many Porsche specialty suppliers have them, and just call them 'Star Allen' sockets, or 'Flywheel socket' ... descriptive, but not really accurate in the semantics' department!
If you see the German brand 'STAHLWILLE' in the picture in the catalog, you can be assured it will fit properly, and be able to remove/install the flywheel bolts without problems. ------------------ Warren Hall 1973 911S Targa [This message has been edited by Early_S_Man (edited 08-13-2000).] |
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08-13-2000, 07:52 PM
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My mistake on calling those torques heads. I used a 12mm 12 point, triple square metric internal werench bit set by Lisle to remove those stubborn flywheel bolts.
Steve |
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08-14-2000, 06:21 PM
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Famous German Screws, arent they?
In fact, these are bolts, made by a German Aerospace Standard (LN 29 949), called "Cylindrical Bolts with Inner Polygon" or in Aerospace terms "Cheese Screw". They are common on German cars esp. for exhausts, sometimes cylinder heads etc., as they are made of corrosion resistant steel for applications up to 650 °C (1200 F). Just for curiosity. Jens '76 CIS with '73 body conversion |
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08-14-2000, 10:39 PM
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For the heat exchangers, buy one of those log T type allen wrench sets. I think it is the 8MM you will need for the Hex bolts that go through the exchanger. For the nuts, use a universal socket with a small extension to get at the proper angel. Drop the whole unit as one piece. Do not try and seperate them, its to hard while installed. Make sure you heat the nuts first with a torch for about 10-15 seconds. This will ensure that you do not snap the studs. When you put them back on use a dab of Anti-Sieze.
Hope this helps |
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08-15-2000, 11:25 AM
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