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HWYSTR455 · 08-21-2019, 04:40 PM

That is no way a reflection. All you need to do is watch that area during the vid to see it, whatever it is is hanging on the cam right there are rotating, AND moving side to side.

EDIT: Now that I'm looking directly at it, it's more obvious.

/

Va68goat · 08-21-2019, 04:53 PM

Sun Tuned,
I like the idea of opening up this motor and checking out the camshaft. On the other hand, my friends that were helping me before are out of the equation for now. Now that Paul and Jeff have their tech, everything will go through them. One thing I don't want to do is spend a lot of time diagnosing things that have been checked 8 times before the tech was involved. As for the distributor, I believe Paul checked that out when he discovered the bad bushing and I'm confident that Paul would have verified that it was straight. But remember, we ran this engine with a different distributor that had another gear on it and it still made the same knocking noise. When we tried the other distributor we also used different plug wires.

STEELCITYFIREBIRD,
Not that I know anything about engines but I always had a feeling that the distributor bushing was the result of something that is causing the knock, not the source of the knock. As I mentioned before, I understand checking everything that it could be but I think it's about time to get inside that motor. Me or my friends aren't touching this motor at this point. I think it's awesome that Paul and Jeff have the tech coming to my house and we're not getting in the middle of that so I'm at their pace. It's been 2 years and a ton of money, I can wait a little longer.

STEELCITYFIREBIRD · 05:04 PM

Definitely worth a revisit with good lighting and/or HD 4K pic/video...and some probing WTF that is...or is not.
I looked at a HFT cam I had handy in hand, definitely the only "counterweight" in that area should be last cam lobe. Roller lobes are centered to lifter bores more than hydraulic lobes.
Went out to a fresh Pontiac short block on stand in my shop, last lobe is nowhere in sight thru dizzy hole with HFT cam, roller lobe should be further toward front than HFT!

Agree HWYSTAR, Definitely their should be nothing in sight thru the dizzy hole but a gear.

Va68goat · 08-21-2019, 04:59 PM

HWYSTR455,
Paul said he had this motor apart. I would imagine he would have noticed something that crazy. That would be odd because this engine has had the same knock since it was first started two years ago.

chiphead · 05:11 PM

Quote:

Originally Posted by HWYSTR455

What the!?! I was so focused on the gear it never occurred to me to look around!

What is that, a piece of a cam bearing or something!?!

/

Give that man a cigar. WTF is that? Is that the back of the cam, near the rear cam journal? That can't be right. There shouldn't be anything between the gear and the rear cam journal.

Edit: Judging by direction of rotation, that object is in front of the gear. Should not be able to see the last lobe? So what the heck is that object?

STEELCITYFIREBIRD · 08-21-2019, 05:08 PM

Now I realize I’m looking from opposite side. Now really WTF is that!!!

HWYSTR455 · 08-21-2019, 05:14 PM

If you watch the vid closely, you will see it changes positions in relationship to the gear, so its just loosely wrapped around the cam core.

.

torqhead · 08-21-2019, 05:15 PM

Quote:

Originally Posted by chiphead

Give that man a cigar. WTF is that? Is that the back of the cam, near the rear cam journal? That can't be right. There shouldn't be anything between the gear and the rear cam journal.

Edit: Judging by direction of rotation, that object is in front of the gear. Should not be able to see the last lobe? So what the heck is that object?

That video is taken from the drivers side leaning over the motor, drivers side at the bottom of video pic area. So whatever that is, is between the distributor gear and the final cam lobe that operates the last valve on the shaft.

Absolutely right, what the heck is that. Wonder if that's what's causing the tapping when the motor is running at speed. Someone needs to get a lighted bore scope, even one of the new styles that you can buy for like $30 on Amazon that works with your phone would give a great view of what that is!

HWYSTR455 · 08-21-2019, 05:16 PM

Pull the dizzy and shine a light down there. I bet you can stick you finger in there and feel it even. Theres not much distance to the lobe from the gear, maybe 2 inches or so.

.

Va68goat · 08-21-2019, 05:19 PM

We had a light shining in there. There is a good chance that is just a shadow!

torqhead · 08-21-2019, 05:23 PM

Quote:

Originally Posted by HWYSTR455

It's moving around, it's not fixed on the cam.

/

I think it possibly looks like it's moving because it's spinning around with the cam. Wonder if it's something that's magnetized and stuck to the cam back there.

Va68goat · 08-21-2019, 05:25 PM

torqhead,
If Paul had this motor completely apart, don't you think he would have noticed something at the cam gear?

torqhead · 08-21-2019, 05:33 PM

Quote:

Originally Posted by Va68goat

torqhead,
If Paul had this motor completely apart, don't you think he would have noticed something at the cam gear?

I think anyone at anytime can be human and look right past something that they look at many times. I'm sure the focus when this motor was being gone over again was on machining, bearings, seals, etc. For example, have you ever sent a note or something that you spent significant time to make sure it's right and then afterwards noticed a snafu... I know I have...

Anyhow, just throwing out a thought. It would be absolutely nuts that it could be something this simple, but I think a few people have said over many post it may be just that... I agree with HWYSTR, that don't look like a shadow or glare and think we are both fine if we're wrong but pull that distributor and check it for sure!

hojs69 · 08-21-2019, 05:38 PM

Great catch and I hope this explains it. Simple is always nice.

What video we looking at, at this stage?

John Milner · 08-21-2019, 05:39 PM

I guess I don't understand what that could possibly be other than a lighting glare. I could see a cam bearing spinning in the bore but I'm not sure that one could walk all of the way out and work its way past all of the cam lobes? Also, wouldn't the individual who is looking down at the cam gear and taking a video have noticed something clanking around in there?

torqhead · 08-21-2019, 05:39 PM

Quote:

Originally Posted by hojs69

Great catch and I hope this explains it. Simple is always nice.

What video we looking at, at this stage?

This one: https://www.youtube.com/watch?v=dDZKHIOGWcE

ponchjoe · 08-21-2019, 06:11 PM

So I guess my question would be could you not put your hand on the distributor housing (not cap) and feel for that when it’s turning? A knock would be easy to feel up the shaft of the distributor

firechicken · 08-21-2019, 06:26 PM

Quote:

Originally Posted by torqhead

This one: https://www.youtube.com/watch?v=dDZKHIOGWcE

Isn't that the crank counterweight?

400 Lemans · 08-21-2019, 06:27 PM

Looks like the crank bobweight just rotating around. Very little clearance between that weight and the pump shaft normally.

Sun Tuned · 08-21-2019, 06:38 PM

I'm not worrying bout the distributor.

What's the piece everyone finally saw? It's got a right angle on it. Looks like a piece of angle steel.

Whatever is causing the noise is what ate the first distributor bushing. And will in fact consume this next one if not rectified.

Surely all the people that pulled and replaced the distributor looked in that hole????

Somebody sabotage something by dropping something in there??? Or did something accidentally find its way down that hole by pure happenstance?

Go pull distributor and look in that hole!!!
We got plenty of help to get it back in there correctly.

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