timing question

dragstang86 · 09-25-2002, 07:17 AM

Im still working and tuning the 90 lx i bought trying to get it to its full potential. What kind of ignition timing should i be running? And what should i be shifting at with the 3500 stall c-4, 373's and an E-cam and 265 hoosier quick times? I think i was over reving it quite a bit when i made my only pass of a 13.70 @ 101 which i was a bit disappointed with. I also only had a 2.13 60ft. I figure the 60ft should at least be a 1.8 with this car. Between that and over reving it do you think 13.1's are possible? Im also adding an electric fan and water pump soon.

9:1 compression
gt-40 p heads
1.6 roller rockers
E-cam
Cobra intake
70mm throttle body
Msd ignition
and all the rest of the bolt ons

thanks for your help,
bryan

90lx
86 coupe

PKRWUD · 09-25-2002, 08:47 AM

14 - 16 degrees advanced will probably work out best for you, but the only way to know is to experiment. Start at 14, and advance it in 2 degree increments until it pings, and then back it off a degree. Make sure you disconnect the spout connector when making your adjustments.

Take care,
~Chris

avbcon12 · 09-28-2002, 08:54 AM

chris is right, start at 14 then go from there. run high octane gas... and i noticed you have GT-40P heads. are you sure you still have 9:1 compression? i thought all GT-40 P heads were 58cc combustion chambers???? and if you have the stock bottom end you will have about 9.5:1 or so compression.

take care,
adam

09-25-2002, 07:17 AM	#1
dragstang86 Registered Member Join Date: Sep 2002 Location: baltimore, md Posts: 220	timing question Im still working and tuning the 90 lx i bought trying to get it to its full potential. What kind of ignition timing should i be running? And what should i be shifting at with the 3500 stall c-4, 373's and an E-cam and 265 hoosier quick times? I think i was over reving it quite a bit when i made my only pass of a 13.70 @ 101 which i was a bit disappointed with. I also only had a 2.13 60ft. I figure the 60ft should at least be a 1.8 with this car. Between that and over reving it do you think 13.1's are possible? Im also adding an electric fan and water pump soon. 9:1 compression gt-40 p heads 1.6 roller rockers E-cam Cobra intake 70mm throttle body Msd ignition and all the rest of the bolt ons thanks for your help, bryan 90lx 86 coupe

09-25-2002, 08:47 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	14 - 16 degrees advanced will probably work out best for you, but the only way to know is to experiment. Start at 14, and advance it in 2 degree increments until it pings, and then back it off a degree. Make sure you disconnect the spout connector when making your adjustments. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

09-28-2002, 08:54 AM	#3
avbcon12 Registered Member Join Date: Jul 2001 Location: West Bloomfield, MI Posts: 391	chris is right, start at 14 then go from there. run high octane gas... and i noticed you have GT-40P heads. are you sure you still have 9:1 compression? i thought all GT-40 P heads were 58cc combustion chambers???? and if you have the stock bottom end you will have about 9.5:1 or so compression. take care, adam __________________ 90 GT black/ grey leather ported GT-40 heads w/ 1.7RR, Cobra intake w/ ported lower, 24# injectors, 190LPH pump, 75mm Pro-M MAF, 65mm TB, K&N panel, BBK long tubes, Off road H-pipe, 2 ch. Flowmaster, Black magic fan, Kirban FPR, 180 deg. T-stat, 3.73's, Steeda Tri-Ax, 130 amp alt. Accell 8.8 race wires/cap/rotor, motorcraft plugs, Factory Five suspension, etc etc etc.... http://avbcon12.stangnet.com

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