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M96/7 Wrist Pin Clip Inserter Extractor


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Through a stroke of genius, I created the worlds first documented wrist pin clip inserter extractor specifically for Porsche. I think I will patent the device and make millions.

If you are rebuilding your M96/97 engine you need this tool!

If the inserter is stuck, it allows you to pull the extractor tube out of the access hole in the side of the cylinder once you've driven the clip home.

Basically it's a pick on the end of a 3' long threaded rod with a wing nut and some washers to use for leverage on the side of the case, so you can gently pry the inserter out.




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Logray, that is exactly the "low bucks" approach we need to see more of; thanks for the idea. :thumbup:

For those that have never assembled this part of an M96, this is the tool with the clip inserted:


And here is Jake Raby using the above tool on the end of the "insertion device" to pop the clip into a piston:


And the clip installed in the piston:


Because you are "building a ship in a bottle" so to speak, when the clip holder gets stuck, it can be a major headache............

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I'm sure it could be fabricated from any suitable material capable of holding the clip in compression until it is inserted into the wrist pin opening on the piston, as it only has to do it six times, unless you are a professional engine builder. The trick is knowing what the OEM tool looks like, and what it has to do, so that you can whip up a cheap substitute for the $300 "factory" tool..............


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  • 4 months later...

Looks like a great work around but why would the "inserter" get stuck?

The insertion tube with the cir clip inside it is long (26 inch) can't you just pull alittle harder if it is stuck?

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At the end of the insertion tube there is a sleeve that is separate from the tube.

The sleeve is the piece where you put in the clip.

The sleeve can get stuck in the hole (because it is not attached to the insertion tube), and this tool was the easiest way I could find to extract it.

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  • 1 year later...

Logray's tool is brilliant and imho should be supplied in the Baum kit. Then he would make the millions he so richly deserves.

Baum should also include in the instructions for their Piston Driver/Circlip insertion tool B9602K a detailed explanation of how you need to index and depth mark the tool. Yes, indexing/marking adds even more time to this tedious and exacting task but compared to dismantling a partially built engine to retrieve a misfired clip it is an obvious precaution.

An alternative to the old fashioned circlip would be Spiralock/spiral lock/spirolock. With the right tool,it may be less likely to misfire? I have encouraged the patent holder (Clyde/Chris Norwood)for the Lock in Tool to contact Jake to adapt the tool for the M96.

Then Logray will have to invent a Spiralock removing tool and make another pile?

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  • 4 weeks later...

Thank you LOGRAY !

Installing the circlip on Piston #6(the most difficult one) this afternoon. First I did a 'dry' run with no clip to check my index and depth marks..

The nose piece stuck in the piston!!

I am soooo glad I lubed everything carefully.otherwise this would have been a real problem.

I do not understand why the nose piece is removable. It is easy enough(though a little awkward to load the clip in the full length tube.  By contrast, removing a stuck nose piece is a lengthy and anxiety riddled hack.

I shall try a carefully recessed pop rivet to prevent this.

I shall also spend more time fiddling and checking that I have absolutely perfect alignment of the wrist pin to the tool.

But the most important task was to thank Logray for sharing his idea .

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