460 Straight up Timing Chain upgrade

[viven44]

OK that makes perfect sense  Aligned with everything. I'll add this to my knowledge base. Use stainless steel when corrosion resistance is more critical vs. intrinsic strength.

Ford picked Grade 5 bolts back in the day. Wonder if they use stainless steel in this day and age.

[ArdWrknTrk]

They won't go to the expense of stainless.
Grade 5 is lower carbon than 8 and therefore less prone to corrosion.
The work hardening also makes G8 less ductile than lesser grades.

Stainless is essentially cake frosting until you get into the aerospace stuff like Nimonic, Hastalloy or Inconel.

You should ask Bill about this stuff....
He spent decades doing material testing at Newport News shipyard.

[viven44]

On my way to lunch I went ahead and traded those grade 8 bolts for stainless steel .. I’ll use them for the areas exposed to water.. I’m doing it your way

[ArdWrknTrk]

Do it your way, my friend!  

Like I said before, I'm not trying to sell anything.

I'm just a materials science geek that wants to share the reasoning behind my choices.

Occasionally I come off as preachy or abrasive, unfortunately...

You must understand, having a kid somewhere on the spectrum.
"Truth's" are very important.  Diplomacy is not often our strong suit.  😉

[viven44]

It’s my way from now !! and I’m not too far away from the spectrum so I get it.

I started my career in a semiconductor fab and the popular saying was “In God we trust, all others must bring data”. I was kind of groomed in that setting so I’m very data driven.

[ArdWrknTrk]

You're in Semi?!?!

I'm right in the heart of what used to be an epicenter, with IBM all-over (HQ in Armonk) and ASML up the road in Wilton.
I really geek on that stuff. Process, optics, dopants, whatever....
A bunch of the guys in my rocket club used to work at research & prototyping for BigBlue in Yorktown heights and Fishkill.

I really like a Taiwanese guy on YouTube, Jon.
His channel is Asianometry.
Some good insights into the direction of fab in particular.

Guy has an incredibly dry and quirky sense of humor, that I enjoy.
I got that "He's one of us" right away..

[viven44]

That’s really cool !! Been In semiconductor forever. Electrical is what I learned in school but I work with materials, processes but learned the fundamentals on the job.

I tend to over analyze and over plan my projects and it takes me longer but often prevents re-dos.

I have a question though. In the galvanic series, if stainless steel is more noble than the “engine block”, wouldn’t the block end up getting sacrificial i.e. thread’s possibly getting eaten up in a corrosion event??

[ArdWrknTrk]

Yes, chrome is high on the scale, but PST is an anerobic sealant.
No oxygen and no electrolyte means there can't be corrosion in the threads.

[viven44]

Ok, perfect! I’ll use sealant on all of them.

[Gary Lewis]

Today’s vacuum. Guess there is a slight leak as we’ve dropped maybe 5” in a couple of days. 😎

[viven44]

Definitely can't wait that long to modulate the vacuum  

[ArdWrknTrk]

I didn't get a chance to get to my truck today, and measure vacuum at the distributor while running.

But tomorrow after birthday lunch, I'm going to give it a shot.  

[viven44]

I made a video just now, it is uploading will send link when done. From what I can tell V REST is a vacuum stabilizer. It does not restrict vacuum but really smoothes out the noise and holds it at the ceiling of all the noise. Similar to the function of an electrical capacitor to reduce high frequency noise.

I believe the function is to provide the distributor with a smooth vacuum signal as a cold engine has more vacuum fluctuation.

Edit: Here is the video link https://youtu.be/vZLuqVgxB-M

[ArdWrknTrk]

This is what I've been saying all along.... 🤷‍♂️

I didn't know you well enough to use electronic analogies. (I try to keep it simple, here on the 'net. 😉)

So, I've come to another intriguing hypothesis.🧐
The valve itself is what's modulating the amount of vacuum.

The REST is being a resistor (!) limiting how fast the vacuum servo can charge or discharge. 💡

NOW it begins to make sense!

[Gary Lewis]

Ahhh!  The restriction is a resistor and the line and the vacuum canister would be the reservoir aka capacitor.  They get charged up and are reluctant to change.

[viven44]

Now these “useless” emissions discards have some use to me since I’m starting to understand what they can do 🤣 Until now I thought they were just a fire hazard!!

[ArdWrknTrk]

It's all vacuum analogs of electrons.

There weren't computers that could perform under those conditions reliably.
And just like you said about a gearbox, good mechanics could grasp what they did, intrinsically.  

[viven44]

I believe they are both capacitors, with the vacuum canister being a very large capacitor with plenty of capacity but able to operate at a lower frequency and the VREST being a high frequency "decoupling capacitor" that kills high frequency noise.

[ArdWrknTrk]

Can you tell riddles, puzzles and enigmas or another one of my "special interests"

I should have been come a cryptographer for CIA.  

[ArdWrknTrk]

The VREST is providing hysteresis..

..