|
Author
|
Topic: Tuning-timing or jetting?
|
Rustang
Gearhead Posts: 733
From: Clarion PA
Registered: Nov 2000
|
posted 10-28-2004 03:22 PM
   
Finally got my car to the track last Sunday for test and tune. Went to a track up near Cleveland called Thompson Dragway. Anyhow, I was playing with ignition timing, and found that everytime I backed off the timing, the car would pick up. Finally, before my last full pass, I bumped the timing back to 32degrees, and also upped the primary jet size 2 sizes to 75 (750dp). The car picked up .28  So now I'm trying to figure out which made the biggest difference, the timing or the jets? Is there a good way to verify?------------------
'68 mustang 351 clevor- 10.92@124
'67 Stang, 351W -11.18@118
'69 351C Torino-14.90@100
'78 Pickup 351W-15.56@88
'79 Pickup 460 ET=??
IP: Logged |
V8 Thumper
Gearhead Posts: 4377
From: Arizona
Registered: Dec 2001
|
posted 10-28-2004 04:15 PM
quote:
Originally posted by Rustang:
Is there a good way to verify?
Sure, with an EGT (exhaust gas temp) meter.
.28 is quite a bunch 
------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
IP: Logged |
MidLifCrisis
Gearhead Posts: 466
From: Frederick County, MD
Registered: Oct 2001
|
posted 10-29-2004 05:51 PM
Perhaps you had a lean condition that preferred less advance until you fattened it up? Charlie
IP: Logged |
capri man
Gearhead Posts: 6417
From: doerun, ga.
Registered: Nov 2000
|
posted 10-29-2004 08:34 PM
you just learned a valuable lesson!!
ONE CHANGE AT A TIME!! 
we have all been there. good luck------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.33 @92mph 1/8
1.54 60 ft. http://community.prestage.com/Member+Pages/789.aspx
IP: Logged |
Mustangsandmore Forums
