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The official DSM CAS information and install guide

LS6 Truck Coils
The beefy ones with the heat sink fins on them

Those coils have overdwell protection built in. If you overdwell the coils, they will fire early, effectively adding advance.

Off the top of my head, max dwell on an LS2 coil is 8ms, IIRC, it is even less on the truck coils.

If you have good system voltage, 3ms is plenty.
 
Old settings were 5.5 on the lq9 coils, then relooked at after some motors got destroyed. New safe limit is is like 4ms, Im running 3.7 with mine. Lots of boost, fuel and air tho in my setup.
 
guys i have a slight problem. i have my cas adapter and cas in the block with the high res disc. now i have everything set to tdc and tried getting the larger area slot on the disc to line up how it shows on page 1 but doesnt get that close like its 1 little window off. anyone else deal with that? cam's/piston @ TDC position
 
Mine was like that. My CAS is the style with wires coming out of the CAS. The position of the sensor is different on the 2 styles.

I ended up retarding the aux shaft one tooth on the timing belt to get the CAS within adjustment range.
 
Alignment of the shaft itself is rather academic, might be nice to have timing marks line up. But all you really need is to have the disc aligned properly on the sensor when the engine is at TDC. To accomplish that you can:
1) Move the intermediate shaft on the belt, one tooth at a time
2) Move the CAS adapter on the int shaft gearing, one tooth at a time
3) Rotate the CAS sensor on the CAS adapter

Some combination of the above should allow you to get the disc in the proper position vs. the sensor when the cams and crank are in TDC #1 position.
 
I'm not sure how far off yours is, do you have a picture? You say its one small tooth off, but if its somewhat close to the middle it will probably be okay. Check and adjust it with a timing light once its running and go from there.

Mine had the inner slot on the disc just outside the sensor area at the limit of adjustment on either side from one "distributor" tooth to the next. But moving the aux shaft one tooth on the belt was a finer adjustment and put the slot in the middle of the sensor with plenty of room for adjustment at the CAS.

Also, are you sure the disc is right side up? I think theres pictures to confirm that earlier in this thread too.
 
I'm not sure how far off yours is, do you have a picture? You say its one small tooth off, but if its somewhat close to the middle it will probably be okay. Check and adjust it with a timing light once its running and go from there.

Mine had the inner slot on the disc just outside the sensor area at the limit of adjustment on either side from one "distributor" tooth to the next. But moving the aux shaft one tooth on the belt was a finer adjustment and put the slot in the middle of the sensor with plenty of room for adjustment at the CAS.

Also, are you sure the disc is right side up? I think theres pictures to confirm that earlier in this thread too.

pulled the timing belt off, set tdc and the cas in the right place, put the belt back on and good to go
 
I have to say, I did a search in this sub forum using the built in search function, and it found nothing (search term CAS). Knowing it was in here, I did a text search for the same thing, and bingo, halfway down the page.

just thought that was interesting, that's all.
 
Search terms 3 characters or less are ignored. Because... racecar.

CAS* works though. 3 characters and a wildcard is a sort of loophole.
 
If I need to search I always do the site: forums.turbobricks.com deal in google. The search bar [on a pc] will remember the search and you can just edit the last part.

And that search came up with this thread first try.

search correctly, n00b
 
it was a comment about how bad the search function is, not a question on how to find something kthnx.
 
So I'm getting 12 v to my cas but no cam or crank signal to ms3x. I checked all my grounds sand they are good. Any ideas bad cas
 
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