Camshaft Nut Removal (left side)

[Cliff]

I’ll have to offer up my version to a wobble nut & see how it works out!....cliff

[Jon B]

I was able to borrow a wobble nut and do The Wobble Nut Challenge.

1) The genuine Porsche tool
2) The SIR tool

Yes, the SIR tool is too shallow for a wobble nut.
The position of the nut didn't matter, the SIR tool will not sit evenly over it.





Jon B.
Vista, CA

[Alaskan911]

Indeed that was my problem. Fortunately I solved it with a little grinding and was able to continue with my motor tear down. Now I've got the engine completely apart and am in the "oh my god, what have I done" phase. ha

[Jon B]

Fortunately I solved it with a little grinding...

Josh, please post a photo or two showing how your SIR tool was modified to fit the wobble nut, or any other clearance mods.

Jon B.
Vista, CA

[Alaskan911]

Josh, please post a photo or two showing how your SIR tool was modified to fit the wobble nut, or any other clearance mods.

Jon B.
Vista, CA

Here ya go Jon. Grinding out the inside was what enabled it to fit over the wobble nut. Grinding the thick part on the back allowed it to clear the chain. Not my cleanest work, but it worked, ha.

Josh

[Jon B]

Thanks for the photos Josh.
It's similar to what John S did to the back of his too.

I'm sure many wobble nuts have been damaged because the commonly available tool doesn't fit them well.

Jon B.
Vista, CA

[911MRP]

Some photos of my two P203 genuine tools . Curiously one tool’s working surface runs from very top to bottom not just the lowest 1/2 inch like other genuine or even shallower on Sirs Aftermarket previously.

This unusual one is genuine being marked with the Porsche triangle and P203 so no earlier than 1968 when parts marking symbol was introduced ( also a shiny nos factory cam holder with the Porsche triangle and parts sticker plus barcode and inventory label too)


Looks like the toolmaker had a few goes at the stamps but the P triangle and tool number are both there.. in fact multiple times. Maybe I should get the vin forensic guys to check it out
I do have a well used other factory P203 marked with the usual simple bold P stamp and the old school Matador brand cam holder.




I don’t work on classic cars for a living just have factory tools for the old car hobby although I did have the privilege to spend a number of years of free time 2-3 days/week learning things at the side of a dear friend at the workshop of one of UK longest established and much respected independent Porsche specialists established in UK in 1974. Very sadly missed by many in the UK.

Steve

[Cliff]

My Matador cam holder looks to be the same vintage as yours! Although, Matador is stamped below the handle, whereas yours looks to be inline with the handle. My chrome P 202 ( more robust handle)was given to me by a 356 mechanic obtained at the Porsche factory while training to work on the then new 911! I had been a good buyer of some of his early parts he was selling. My P 203 (1/2 inch working area) looks very similar to your factory tool. Your one with the deep points is very unique. Thanks for sharing. .....cliff