Valve Train Time, Raby article now posted with permission Options

[OU8AVW]

Next step for me is setting up my valve train geometry. I searched the web and the World and now I have enough information to know that I need more information. I see a few references to an article Jake had on his now extinct forums. The Facebook page is pretty vast. Can someone point me to this article? I think that's my first step toward comming up with more intelegent questions.

FYI: I'm building a 2056 based on a late case.
I have Jake's 9550 cam installed
I have swivel feet adjusters mounted on 1.7 rockers with solid spacers
I am using SS valves and chromoloy push rods
I installed 8x10 rocker studs
I have used .065" of shim on the cylinders with no head gasket

Thanks! (IMG:style_emoticons/default/piratenanner.gif)

[Cap'n Krusty]

Looking at your last picture, it's pretty evident that you failed to follow one of Jake's first instructions, one that's also mentioned in an early post in this thread. Your dial indicator probe is NOT parallel with the axis of the valve. In fact, it's at a pretty steep angle. You need a longer tip on the dial indicator, and it needs to be positioned over the retainer so the shaft lines up with the center line of the valve stem. Readings at an angle, which is probably not repeatable, aren't gonna be as accurate as they need to be, and the tip is apt to deflect, making it even worse.

Now for the Krustiness you've all been waiting for! Making the rocker assembly mounting studs 10mm is NOT an "update". It's just making them bigger, as Porsche (and VW) never introduced this change in later engines ...............

The Cap'n

[OU8AVW]

Looking at your last picture, it's pretty evident that you failed to follow one of Jake's first instructions, one that's also mentioned in an early post in this thread. Your dial indicator probe is NOT parallel with the axis of the valve. In fact, it's at a pretty steep angle. You need a longer tip on the dial indicator, and it needs to be positioned over the retainer so the shaft lines up with the center line of the valve stem. Readings at an angle, which is probably not repeatable, aren't gonna be as accurate as they need to be, and the tip is apt to deflect, making it even worse.

Now for the Krustiness you've all been waiting for! Making the rocker assembly mounting studs 10mm is NOT an "update". It's just making them bigger, as Porsche (and VW) never introduced this change in later engines ...............

The Cap'n

Another astute observation CK. I have corrected the angle of the gauge. Thank you for the correction of semantics, however useless that information is, it is still entertaining. (IMG:style_emoticons/default/poke.gif)

What do you think about the lack of adjustment? I did machine the rockers for more clearance but it's still tight.

[Cap'n Krusty]

Looking at your last picture, it's pretty evident that you failed to follow one of Jake's first instructions, one that's also mentioned in an early post in this thread. Your dial indicator probe is NOT parallel with the axis of the valve. In fact, it's at a pretty steep angle. You need a longer tip on the dial indicator, and it needs to be positioned over the retainer so the shaft lines up with the center line of the valve stem. Readings at an angle, which is probably not repeatable, aren't gonna be as accurate as they need to be, and the tip is apt to deflect, making it even worse.

Now for the Krustiness you've all been waiting for! Making the rocker assembly mounting studs 10mm is NOT an "update". It's just making them bigger, as Porsche (and VW) never introduced this change in later engines ...............

The Cap'n

Another astute observation CK. I have corrected the angle of the gauge. Thank you for the correction of semantics, however useless that information is, it is still entertaining. (IMG:style_emoticons/default/poke.gif)

What do you think about the lack of adjustment? I did machine the rockers for more clearance but it's still tight.

I like the idea of plenty of adjustment. You start out too close and it could end up being a nightmare down the road. I agree with the others who have suggested shimming the rocker stands. A few thousandths should be OK, but too much shimming can allow the rockers to hit the valve covers.

The Cap'n