copycutter Posted August 4, 2011 Share Posted August 4, 2011 Hey guys, I just fitted an EBC to my GTS-T and noticed that it was pinging like crazy at only around 10psi or so, which seems awfully low for a stock GTS-T. The only other mods really are air filter and cat-back exhaust. The normal GST-T map should be more likly to R&R at that boost and mods I would think. However whenever I'm parking or moving real slow I can smell the richness, so it's definitely over rich around idle, but must be way lean when it's loaded up on boost + revs. After thinking about it a bit I remember when I bought it I noticed the CAS position looks almost fully to the right, like if the nuts were undone and you twisted it almost all the way clockwise. It looked much more "turned" than what I remember the rb25 I had in my 180sx was, which from memory was much more a neutral position. I don't know if this setting is advanced or retarded, I would assume advanced, which I'm thinking could be the cause of this pinging. My question to you all is, can you tell from visually inspecting a CAS position if it's wrong like that or could it be one of the many other causes IE bad fuel, clogged fuel filter, bad pump etc. I am planning to get it looked at when I fit a dump pipe, and I've turned the boost back to stock for now, but I just wanted to see if any of you guys agree? Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/ Share on other sites More sharing options...
DVS JEZ Posted August 4, 2011 Share Posted August 4, 2011 Set it close to the middle of the holes. Best to set it with a timing light Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950032 Share on other sites More sharing options...
gotRICE? Posted August 4, 2011 Share Posted August 4, 2011 Its possible. Mine was pinging like crazy when the weather got warm. It had been SAFC tuned by a no longer trusted tuner, and he advanced it 4 degrees. So i reset mine and bought a G4. lol Set it back to the middle def. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950066 Share on other sites More sharing options...
copycutter Posted August 4, 2011 Author Share Posted August 4, 2011 Does someone setting it with a timing light require a dyno or just the light itself? And if I want to just set it closer to where it should be in the middle or just touch nothing until I get someone to look with a timing light? Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950147 Share on other sites More sharing options...
gotRICE? Posted August 4, 2011 Share Posted August 4, 2011 If its as far advanced as you say it is, then retarding it back wont hurt you in any way. It might feel down on power perhaps, or it might even pick up a little. But using a timing light to get it spot on would be better. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950148 Share on other sites More sharing options...
AngryRB Posted August 4, 2011 Share Posted August 4, 2011 If its as far advanced as you say it is, then retarding it back wont hurt you in any way. It might feel down on power perhaps, or it might even pick up a little. But using a timing light to get it spot on would be better. a while back i set my cas all the way to the right and i was running 11psi with FMIC and exhaust, but with octane booster the car never pinged, or atleast i couldnt hear anything... but around the middle is about right.. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950250 Share on other sites More sharing options...
JonnoHR31 Posted August 4, 2011 Share Posted August 4, 2011 do not set it back to the middle and leave it, that'll be worse. turning the cas clockwise retards the timing, anti clockwise advances it. get a timing light and check what the timings like. if its too far advanced and the cas is turned all the way clockwise then pull it out and check if the half moon locator is still on the cam. if it is your cam timing is out Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950275 Share on other sites More sharing options...
boostn0199 Posted August 4, 2011 Share Posted August 4, 2011 do not set it back to the middle and leave it, that'll be worse. turning the cas clockwise retards the timing, anti clockwise advances it. get a timing light and check what the timings like. if its too far advanced and the cas is turned all the way clockwise then pull it out and check if the half moon locator is still on the cam. if it is your cam timing is out My half moon is still in my cam and CAS and mines advanced the full way for 15 degrees. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950325 Share on other sites More sharing options...
JonnoHR31 Posted August 4, 2011 Share Posted August 4, 2011 yer cool. i said if the timing wasnt right and it was maxxed out for adjustment then either the half moon is gone or the cam timings out. if the timings correct then leave it and turn the boost down Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5950392 Share on other sites More sharing options...
copycutter Posted August 5, 2011 Author Share Posted August 5, 2011 Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5951145 Share on other sites More sharing options...
horrace Posted August 5, 2011 Share Posted August 5, 2011 That's not at full adjustment but either way get a light and time it properly, if you were close to me I'd help you out with mine. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5951469 Share on other sites More sharing options...
JonnoHR31 Posted August 5, 2011 Share Posted August 5, 2011 thats anti clockwise from centre, so assuming everything else is set right that would usually mean advanced timing. get a timing light on it Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5951971 Share on other sites More sharing options...
DVS JEZ Posted August 5, 2011 Share Posted August 5, 2011 Yep Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5952620 Share on other sites More sharing options...
copycutter Posted August 6, 2011 Author Share Posted August 6, 2011 Thanks everyone. I'll get it look at asap with a timing light. Hopefully the belt has been installed correctly and the CAS isn't set like that to compensate for cam gears being teeth out or whatever. Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5952649 Share on other sites More sharing options...
89CAL Posted August 6, 2011 Share Posted August 6, 2011 I have a question that is kinda related to this. If you have a Power FC and the handcontroller is showing 15 degrees at idle, can you then put a timing light on and set the CAS to be triggering at 15 degrees on the balancer mark. Probably not the best explanation but was thinking about this today and thought it should work and would make it easier to set base timing. Thoughts? Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5952921 Share on other sites More sharing options...
JonnoHR31 Posted August 6, 2011 Share Posted August 6, 2011 yer you want the ecu readout to match the actual timing on the balancer Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5953046 Share on other sites More sharing options...
89CAL Posted August 6, 2011 Share Posted August 6, 2011 Yeah thought that would be the case but just wanted someone to confirm this Thanks Link to comment https://www.sau.com.au/forums/topic/372985-can-you-tell-visually-if-your-cas-position-is-wrong/#findComment-5953334 Share on other sites More sharing options...
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