Part Have arrived -Cam Question!

[Mark McClure]

Well all parts arrived from Pelican over the last week.......3.0l SC 78

SSI
Monthy 2-1 4"
10.5:1 JE Pistons
Gaskets
chains
Webcam Cams 502/104 ( 4 bearing no drives ).

The Pistons are unbelievebly light and the quality of the SSI looks excellent.

What I have discovered, and it is my fault for not asking more questions is that the new cams as requested have no drives. When I was asked if I needed drives for either power steering or scavage I said no. So the cams arrive and instead of using the large nut they are the later style that use the bolt. I now have to purchase a bolt and washer.

The real question is how do you hold and time the cams.....all reference and pictures show the cams with the nut. On the bolt style how do you hold the cam with the tool and tighten the bolt when the washer covers the adjustment holes ( assuming the cam tool uses the adjustment holes). How do you move the cam during timming if you are not holding the cam. Or does the tool hold the sprocket differently. In which case do I also need to update the sprocket.

Thanks

Mark........

[Early_S_Man]

Mark,

Look at the bolt end of your new cams ... and see if there aren't a group of bored holes that 0.1" dowel pins wouldn't fit into??? The 1980.5+ cams' holder uses those holes to 'grab' the cam!

[Fishcop]

Mark, I believe the timing method is the same... just different tools are used. From what I have read, the bolt style are actually superior and easier to work with. You will need to acquire the factory holding tool however - it is distinctly different to the crows foot and holder - a standard socket is used for the bolt. Pretty sure the bolt and washer won't send you broke through Porsche.

[Mark McClure]

Early_s_man,

There are no holes on the end of the cam........also the thread for the bolt does not start at the very end it starts about 2-3cm inside the cam. Even if there were, to use them to turn the cam you would have to remove the cam sprocket. There are two holes on the other end of the cam The right hand one has a threaded hole the left does not.

John - ye it looks like Porsche will be getting some more business from me! In Waynes book the timing method for high lift cams refers to moving the cam not the crank.

Anyone got a picture of each of the end of one of these cams?

Cheers


Mark.......