Doing a web series on my low buck 911 Project, looking for feedback

[Bob Kontak]

Originally Posted by sugarwood

How did your rocker shafts not have seals when you removed them? I only saw empty grooves. How does it come from the factory?

Why do you think they call them RSR seals? They use them in race car engines and not production cars.

Originally Posted by sugarwood

I'm learning more from your videos than I've learned in 6 years of reading words on this forum.

Your lack of learning has nothing to do with the words in this forum. Edit: Get out there and screw some stuff up is a nicer way to say it.

[sugarwood]

What is the point of the empty grooves?
Why not just have a solid barrel ?

[ADDvanced]

Originally Posted by sugarwood

This was an amazing video. I'm learning more from your videos than I've learned in 6 years of reading words on this forum.

Thanks man! If I can get people to tackle some projects they wouldn't have otherwise attempted, I'm stoked! I had no idea how to do any of this stuff until I dove into this project.

So, the cam had tension on some of the rockers and valves, and its best to rotate the cam to alternate what has tension on it? Is that why your socket got stuck on the tight rocker? Nice explicit explanation later on, about the bumpy part of the cam creating pressure.

Yup. Fumes were causing my brain to say relieve tension using the valve adjustment screw, instead of turning the engine over. Derp.

I don't understand how you could invert the inside/outside of the seal. It only goes on one way unless you twist and kink it like a mobius strip, which would be obvious

No, the whole thing was inverted; the inside square edge was on the outside, and the rounded edge was on the inside. They're elastomeric so they can twist like this:

How did your rocker shafts not have seals when you removed them? I only saw empty grooves. How does it come from the factory?

What a strange way of securing the rocker shaft. Is the metal that soft that it expands when you tighten the beveled bolt?

What is the point of the empty grooves?
Why not just have a solid barrel ?

Nope, most engines didn't come with them. When the engine was brand new and the bores were literally perfect, they probably weren't necessary, but depending on how many times that shaft has been removed/installed, it could develop grooves/wear, so installing RSR seals when you have the chance is a good idea. Those grooves are there to allow the metal to flex from that point; they are basically the fulcrum that allows the end to extend/enlarge.

If it was solid the ends would not expand as easily. Because both the washer/nut have a beveled edge, it presses outwards into the beveled edge of the rocker shaft, expanding slightly when compressed.

Does that make sense?

[Bob Kontak]

Originally Posted by sugarwood

What is the point of the empty grooves?
Why not just have a solid barrel ?

That's a valid question. The outside diameter grooves are inboard of the recess to accept the thingie that expands the outer lip. I see it having nothing to do with that function.

However, it's German so there is a reason.

[Bob Kontak]

Originally Posted by ADDvanced

Those grooves are there to allow the metal to flex from that point; they are basically the fulcrum that allows the end to extend/enlarge.

I'll buy that but I don't understand it and that's ok.

[ADDvanced]

Some updates! I have a lot of irons in the fire (like usual) but haven't had time to edit videos. Trying to catch up! Expect a few more videos pretty quickly, as I have a lot to share.



https://www.youtube.com/watch?v=ToRYPNVMBH4

DIY Porsche How to on finishing up Block Assembly; I go over how to:
- Level & install Timing Chain Covers
- Carrera Tensioners
- Protect Zinc Plating
- Install an Oil Sump Plate
- Remove the headers
- Grind down an exhaust insert or two
- Assemble/Install the Throttle Plate
- Install the Crank Pulley & Engine Hook
- Modify/Install the Cylinder Baffles for Improved Cooling
& probably some other stuff. Please let me know if I did anything dumb, also, this shows my fix for the dumb exhaust inserts.

[ADDvanced]

Haven't updated this thread in forever, figured some people who don't frequent the 911 technical forum might dig some of these:

[ADDvanced]

[sugarwood]

Whoa, tell us about that insane Quad in the storage shed !!

[Fast Freddy 944]

Moving camera vote 2. Cool restore, but if the camera moves, im out. Pawn stars does that and other 3rd person view point tv series does, Im changing the channel, barrrrffff...Motion sickness...

[ADDvanced]

Originally Posted by sugarwood

Whoa, tell us about that insane Quad in the storage shed !!

Where? Not sure what you're referencing?

[ADDvanced]

Originally Posted by Fast Freddy 944

Moving camera vote 2. Cool restore, but if the camera moves, im out. Pawn stars does that and other 3rd person view point tv series does, Im changing the channel, barrrrffff...Motion sickness...

Which episode?

I had complaints about that in the first episode so I didn't do it again.