monster626 Posted October 31, 2003 Share Posted October 31, 2003 I just wanted to know what anyone else is running. At this time i have my base timing at 20 btdc-30 at full advance and 15 under boost. I am only running stock boost at the time. Just wondering if under boost there is a possibility that a little more advance would help say 18 or so. I'm still working on the setup do to the cam that i'm using( msa 270/260). It is a ruff idle which i expected but loves to pull untill you say stop. I welcome any ideas even from those with any other standalone systems. Thanks for you help. Quote Link to comment Share on other sites More sharing options...
yo2001 Posted October 31, 2003 Share Posted October 31, 2003 26 deg is about max under boost, Quote Link to comment Share on other sites More sharing options...
Guest Zcarsmakemyheadhurt Posted October 31, 2003 Share Posted October 31, 2003 You'll make alot of power with that much timing, specially at low boost I wouldn't go any higher. I would suggest using the boost retard feature at 15psi, start retarding 2 degrees per pound of boost if your going real high on the boost. That would depend on your cam and if your on race fuel. Have fun, good question. Quote Link to comment Share on other sites More sharing options...
monster626 Posted October 31, 2003 Author Share Posted October 31, 2003 thanks for the help If i understand you correctly i should stay at 15 degrees under boost? I'm running the large turbo cam from Motorsport auto (270/260) duration. No i'm not running race fuel just super unleaded. T3 with only 8 psi from the internal wastegate. If possible is there anyone that knows what the stock advance is for the turbo models.......... I'm having fun with the set up but i'm not sure how far away from stock that i am. Thanks again for the help. Quote Link to comment Share on other sites More sharing options...
Guest Zcarsmakemyheadhurt Posted October 31, 2003 Share Posted October 31, 2003 Read or invesitgate the boost retard feature in you fuel computer and boost the car. Quote Link to comment Share on other sites More sharing options...
Clifton Posted November 1, 2003 Share Posted November 1, 2003 15* total at the stock 7 psi with 7.4:1 is a little low. You could run 25+ psi on pump with that little timing . I run 22 psi at 20*-22* total, can't remember wich. The middle to high 20's sounds right. You should add another 10*. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted November 2, 2003 Share Posted November 2, 2003 Off the top of my head, 20* at idle, ramping to 38*. At boost, its retarded to ~15* total timing at 15psi. Quote Link to comment Share on other sites More sharing options...
yo2001 Posted November 2, 2003 Share Posted November 2, 2003 I have to say timing can give alot more power than couple extra pound of boost. Mine is around 22-24 under boost. (I think, it's pretty hard to check that) I gained 20ft/lb/10-12WHP adding couple degrees of timing on the dyno. Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted November 2, 2003 Share Posted November 2, 2003 Here is a timing map I developed for an SR20DET. It is much more aggressive than you want to run under boost, but gives you an idea on how to structure a curve. This was with a large/efficient intercooler and large turbo(62-1). The 2nd picture is of the timing curve I used to run on my L6 motor. You can see I ramp out the timing very quickly and then taper it off to maximum boost. Quote Link to comment Share on other sites More sharing options...
monster626 Posted November 3, 2003 Author Share Posted November 3, 2003 thanks for all the help right now i have had the car set to 20 at idle advance to 30 cruse at 36 and under boost 17 seems to run good but i think i'm still a couple degrees off on the cam setting so thats what i'm working on now. the card said that intake opens 25 degrees btdc and for degreeing that it is 5* btdc so i'm a little confused. is 5 degrees on the cam 25 at the crank? If any one could help explain i would like the help. All timing marks are dead on during the rebuild so i know where the exact tdc is. once again thanks for any help Quote Link to comment Share on other sites More sharing options...
D83ZXT Posted November 3, 2003 Share Posted November 3, 2003 Ahhhh... The joy's of programing! I can't wait to see that screen again. Donna Quote Link to comment Share on other sites More sharing options...
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