I stopped reading after the second page but how many people if anyone has used the 3x00 cam from here? http://www.milzymotorsports.com/

I must be blind then...'cause I can't find it. Or they took it down already.

wrong site! but close!! lol... this is fun... maybe too much of this!! ------------> :ec:

I think you are reading the schematics wrong... And you obviously don't understand the basics behind ALL hall-effect sensors.

http://www.picotech.com/auto/tutoria...r-signals.html

I'm just wondering how you know the circuitry on the cam sensors. Did you somehow find that on schematics as well? Do we need to get an o-scope out and scope some of these to show that the hall effect sensor does indeed send a square wave (as determined by the size of the notch on the cam) to the PCM and not a spike as you think? So far, I've shown diagrams from official GM tech manuals and you've posted basic info on hall-effect sensors that is wrong. Unless of course, GM for some odd reason redesigned their hall-effect sensors to send out a pulse, but they decide to keep calling them hall-effect sensors to trick everyone.

In short, show me your proof, and then maybe you can attempt to convince me...

Not many yet considering he just got the first batch and shipped them out to us this week. I got mine on monday. Installing it this weekend but won't have the engine in and running for a while since I'm waiting on a custom radiator. xxxblackhillxxx has a stage2 cam and heads that Milzy installed on his car last weekend. I've seen the vid for it and it sounds sweet! He's planning on a custom dyno tune soon. I don't know about everyone else, but the first run of these was a group order (like 8-10 I believe), and they should all have theirs soon if not already.

Link to the vid would make this a whole lot easier. I should have known Tom was going to be the first GA with the cam, he mentioned he had some surprises up his sleeves.

http://www.ez112.com/videos/MVI_0404.AVI


edit

right click, save as

there ya go, beat me to it. that's a friend's site hosting it ... please right click, save as

First. I'm not describing how a hall effect sensor works. I was describing how the CMP sensor works based on the schematics I was given.

Here they are. If you have a different interpretation feel free to speak it.

:drool:

Wow... you got your explanation of off those schematics? Unfortunately, the srceen shots are too small to really read most of what is on there, but you can get some understanding out of it. The switch shown in the sensor will operate as in the link I gave you. IOW, whenever there is change in the distance from the sensor to the ferrous metal (ie, cam) the switch will move positions. Its like putting 2 magnets together with the same polarities facing each other. From a distance, nothing happens. When you bring them together, the weaker will be pushed away by the stronger. This doesn'y happen for just a spike, but for the entire time that the magnets are close together. Therefore, when the cam position sensor is close to the metal, it will give one signal, and when it is further away, it will give another signal. The resistor you see in the diagram is just representative of the internals of a chip inside the PCM. In order for voltage to flow through a wire, you must have a complete path for it to flow. The 12V wire and GND wire going to the sensor provide a reference signal to the sensor. The actual signal is then that 12V, but it also needs a GND of its own. The wire goes back to the PCM and into a chip. How the chip works is really way to indepth for most people to understand, but it is basically just a whole lot of transistors. All transistors will have their own GND to complete any signal coming into them. Therefore, to complete the path of current flow, the signal passes through the transistor and to the chip's GND. The transistor takes the square wave produced by the signal and sends it along to the rest of the system.

Just basic digital circuitry....

:whistle: lol

How come GM changed the design 3 times?

JEEZ tom, that is the coolest thing I've ever heard come out of a GA. what did the whole setup cost you, cam + parts +install?

As far as the change in 2003, here is what GM has to say...

"The 3.1L front camshaft journal has been revised with a new timing pattern. This journal is now machined with 50/50 pattern of raised and lowered semi circles, rather than a single boss or lug. The operating principal for ignition and fuel injection timing has not changed, but the new timing pattern requires a slightly smaller cam sensor and modifications to the fuel injection wiring harness. The new timing pattern was introduced in anticipation of future development."

Cammed GA = the new hotness! MORE VIDS, that was sick.

Is it really any different than this?

http://www.60degreev6.com/hlperf/94Beretta.wmv

Oh, and if whoever is hosting is really worried about bandwidth, change the format. Its sad when a 24sec video is 8+MB. Mine is over 2 1/2 minutes and its only 2.3MB....

Tom you think you can break 14s now? lol How does it feel? Are you going to hit the track soon? Give us some personal opinions.

Didn't I say this a few posts back?

haha I don't think he cares too much.