rotorhead1

Does anyone know how mane degrees one tooth on the crank angle sensor spans? if so, does the allowable adjustment for the CAS let it move the distance of one tooth?

HAILERS

I count 14 teeth. 14 into 360 is 25.71 degrees for each tooth. The second part of the question I'd say probably. Are you having problems inserting the cas and getting the proper timing? Just trying to figure the questions direction.

r_ed_line53

What do you really want to know how to do?


see ya,

car 53

rotorhead1

well, i just finished installing my rebuilt engine about 1000 miles ago, the current red line is 6000, and i have to turn the cas all the way clockwise to get any power, and that is at 5500 or so. i have taken the cas in and out, and was wondering if it is jumping a tooth while i am inserting it. if it is jumping it has done it every time, and the manual says nothing about the possibility of it mis aligning on insert. it just says turn the ecentric to tdc, line up the marks on the cas and put it in.

HAILERS

Now we are getting somewhere. Here's the deal. Take the cas out. Now take that black cover off the top of the cas, thats held with two small screws. That reveals a shaft with two teeth on top and just below 24 teeth. Heres the deal. Line up the marks on the bottom of the cas just like you have been doing. Now hold that position and look in the top of the cas and observe the relationship of the teeth to any point on the nonrotating body(ue that black coil with the red and white wires). Now insert the cas completly into the engine. You'll notice that as you insert it in the engine, the shaft will rotate some from where you were holding it. The secret now is to look at the teeth in the top and turn the cas body until the teeth and the fixed point on the body are just like they were when you held it in you hand earlier with the bottom marks on the cas in alignment. You are doing this cas insertion with the first mark on the pulley on the mark, are you not? Of course you are. The car should start right up. At that point you should get a timing lite for fine adjustment. No thats wrong. You need to get a timing light period and finish the timing. Should not have to move the body more than a fraction if you follow the above. If ANY of the above is vague write back. If after installing you find that the cas is at one or the other end of its travel limits while observing the above write back. There is a reason this can happen and can be fixed.

Henrik

Is there any way to install it incorrectly but still get the timing marks to line up?

Henrik
87TII

rotorhead1

you da man!!! ill check it this weekend!

HAILERS

Is there any way to install it incorrectly but still get the timing marks to line up? (HENRIK)
Some reason the queston just does not click in my mind. Something about the question is wrong. Can't put my finger on it. If you align the eccentric shaft pulley mark with the wire pointer on the cover, and then install the cas as in my above post, I don't think you can possibly go wrong. I used to just align the pulley, align the marks on the bottom of the cas and install the cas, all the time realizing that the cas shaft was turning on me when I was putting it in. Then I would start the car. Most always the timing was pretty far off and I had to turn the cas body to where the car would idle enough for me to get a timing lite on it. Finally the light bulb came on in my head and I realized that I could get it spot on if the top cover was off and I could visually see which way the shaft was turning from the setting. Then I could, now that the cas was fully installed , turn the body to the exact spot it should be on. Make sense? I did read somewhere a fellows pulley marks were not korrect, so he had to find true top dead center and go from there. Anyway, yes, the timing marks can line up and the cas can be way off because the body got rotated too far one way or the other. I'm dense. Will you restate the question.Please? Oh yes, something I thought about the other day. The front pulleys that bolt on the eccentric shaft hub with four small bolts.....There are four holes in the pulleys, and these four holes have to be orientated in only one way with the four holes on the hub. If you install these pulleys off a hole by wallowing out the attach holes, then the timing marks would be off. Make sense? Probably not. You need to take the four bolts out and take a good look at the hole pattern to see what I was blabbering about.

rotorhead1

hey hailers,

the more i think about it, the more i think you hit the nail on the head. i knew my prob wasnt the water thermo sensor, or the cold idle, or a bad afm, or a leaking intake. i will send you a pm when i get it worked out. thanks for the hint. i dont know why i never thought to take the cap off the cas and look to see what it was doing.

Henrik

Ya, not well phrased... What I meant was if your timing light matches the timing marks on the pulley, does it matter 'how' the CAS is installed (ie can you get correct timing lights with the CAS installed wrong? and does it make a difference?). AFAIK the pulley is keyed.

Henrik
87TII

TonyTurboII

The CAS isnt nessacarily installed wrong, but has moved off original location. Thats why the adjustment nut is there. To compensate for the internal workings being off, so you dont have to take it all apart and line it back up, you can do it while its installed in the car. Understand? As long as your timing is lining up on the crank, you dont have anything to worry about.

red7

After I install mine and adjusted it with a timing light, it sits at the end of the adjusment. I try re-installing several times even with the cover off but it always has to go to the end of the adjustment to set the timing. How you fix that?

TonyTurboII

"if it aint broke dont fix it"