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How much timing can you run on 87 octane??
After putting almost 15K miles on my Mustang, and always having a nice Sunpro dial in timing light, I finally checked the timing on the stang. I first checked it as is, got about 17°. Thought that was high, checked my engine sticker, which was on the broken off coil cover courtesy of the PS pump fiasco 2 weeks ago. They list 10°, but first have to remove the spout conn. I had found this during the valve cover change, right in the TFS harness. So pop it off, start it up I get 8°. I was tempted to bring it up then, but looks like I need a special wrench to reach the bolt, like a ford version of my Chevy wrench which is a 9/16 hex. I assume 12 or 13 mm.
Next Q, what is the average max timing I can run on 87 octane?? If I am going to bump to 10° would like to go higher if I can. I know it's mostly trial and error, just want to get some ranges to play with. Oh, yeah, after I get a good 87 baseline, I will find a good setting for 92-93 octane for track blasts before the track closes for winter http://www.mustangworks.com/msgboard/smile.gif Then I'll put some #'s up for ya guys ------------------ Frank W 90 5.0 LX coupe Daily driver. Silencer removed, K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch, FMS blue wires Energy Suspension end links 88 Notch 2.3L 5 speed Parts/beater car My two Notchbacks 74 Chevy Laguna Type S-3 305 Finally fixed getting a 454 to put in garage <A HREF="http://www.chevellepages.com/folingo" TARGET=_blank>www.chevellepages. |
I say 10-12 degrees on 87. Just a guess, every car is different.
------------------ '91 LX Hatch, 17 ROH ZR6's, lowered, 3.73's, offroad H pipe, SN Cobra cat-back, ASP pullies, 14° timing, C&L 76mm MAF, 170A 3G, B&M Ripper on a T5 Best ET: 14.593 @ 94.62 2.292 60' 1991 LX Hatch 5.0L |
Oh Jeez, I wonder if I am the only 87 octane warrior out there http://www.mustangworks.com/msgboard/eek.gif
I can't see myself burning 92 for the daily work blast. |
i run 16deg on 87 but i have alum heads and they dissapate CC heat betta and i run 2 range colder plugs
------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch http://cwm.ragesofsanity.com/contrib/owen/scatter.gif |
If your base timing is at 8 degrees, then it is retarded two degrees. 10 should be your base of reference. set it there and go for some hard runs up and down a kid-free street. You know the routine. 2 degree increments until you and the engine are both happy. BTW, it's a 1/2" hold down bolt. A 13mm will fit, but will be just loose enough to slip and strip the bolt head.
Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!! |
Oh jeez, it figures it's still a SAE fastener when all the others are Metric. The Z shaped 1/2" wrenches are easy to find at least.
------------------ Frank W 90 5.0 LX coupe Daily driver. Silencer removed, K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch, FMS blue wires Energy Suspension end links 88 Notch 2.3L 5 speed Parts/beater car My two Notchbacks 74 Chevy Laguna Type S-3 305 Finally fixed getting a 454 to put in garage <A HREF="http://www.chevellepages.com/folingo" TARGET=_blank>www.chevellepages. |
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