Cas Adjust

[ak_stylez]

Hey,

CAS on my r33 gtst is currently set at 10 degrees (retarded because stock ecu was advancing too much). I've got myself a power fc which I'm about to install and drive around with for a few weeks before i get it dyno tuned.

I figure before I fit the pfc i should return the CAS back to 15 (default?). is this easy with just the basic tools? how do I get the right angle? does the CAS click with each degree or do I need to pull out the old protractor? clockwise or anticlockwise?

searched but couldnt find much on specifically adjusting the CAS.

thanks in advance

[Guilt-Toy]

LOL! yeah get the protractor out and take some pics and show us how its done, that would be educational for all of us =)

hhahahaaa just kiddin mate, you have to get a timing light and set the timing by using the timing marks on the harmonic balancer on the bottom of the engine.

Probly take it to a mechanic would be the best bet for you, oh and btw it does not click.

[ak_stylez]

I did read a few mentions of using a timing light, but I assumed that was if you were unsure of the default CAS setting.

If i know that the default CAS is 15 degrees, can't I just set it at 15? or is the angle not evident from the outside?

[blind_elk]

Isn't a PFC programmable? In that case, you tell the PFC 15BTDC at idle, then adjust the timing offset in the PFC until the timing light says 15 BTDC.

[Guilt-Toy]

Yeah its not evident from telling the timing on the CAS. only when using a timing light on the harmonic balancer when you tell the timing then you move the CAS to correct the timing.

I did read a few mentions of using a timing light, but I assumed that was if you were unsure of the default CAS setting.

If i know that the default CAS is 15 degrees, can't I just set it at 15? or is the angle not evident from the outside?

[ak_stylez]

so just to clarify guilt toy, i do this BEFORE fitting the power fc?

[Guilt-Toy]

probly better off waiting untill you put the power FC in and get your tuner to lock the timing. (its a term used for setting the timing on CAS to be the same on the ECU)

so just to clarify guilt toy, i do this BEFORE fitting the power fc?

[ak_stylez]

well if that's the case, is it safe to fit the pfc and drive around with it on the base tune while the CAS is at 10? (easy driving no fanging)

car has:

3" turbo back

r34 smic

stock turbo @ 10 psi

pod in box