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Author
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Topic: what fp and timing should i run with a 125 dry shot
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street_illegal_stang
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Member # 1554
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posted
 
 
this is for my 88 notch
gt40 heads,f303 cam,and gt40 tubular intake,
all the bolt on goodies sitting on a 140k mile shortblock ![[Eek!]](eek.gif) ![[Wink]](wink.gif)
right, now i have it at 9 degrees timing w/46psi fuel pressure with vacuum on .this is for a 125 dry shot nos 5115 kit.
does this sound okay??? ![[Confused]](confused.gif)
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
It sounds ok, but I think I would start with a little less timming on a 125 shot...Maybe around 6-8 degrees, you can always bump it up and it's safer too....
What fuel pump are you running, 190lph?..
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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street_illegal_stang
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Member # 1554
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posted
255lph intake/bbk adj. fuel reg./24pd injectors
thanks for the support
so far i took it to the track(1/8 mile)
and scored a 7.56 @91-1.66 60ft(75 shot-.42jet)
at 10 degrees 44psi fuel.
125shot-.67jet
then lowerd the timing to 8 ,set the fp to 47psi
it ran real strong till 330' mark
a small pop sound happend right as i power shifted to 3rd?felt like it ran on seven after that then cleaned up
i got scared and put the other jet back in ![[Big Grin]](biggrin.gif)
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
You changed the fuel and the timming?...You should only really change one thing at a time if you're trying to tune your car...
For example, keep your FP the same and mess with timming, and vise versa...
Was the pop from the exhaust or the intake?...Could you tell?...
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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street_illegal_stang
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Member # 1554
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posted
i think it was ths intake.
may i got a lil' force air "car quief"
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
If it was your intake "popping" then you need to change your timming...
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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street_illegal_stang
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Member # 1554
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posted
then again im not sure if it was the intake
my buddy said hear heard me in the parking lot
when i ran.
i bumped up the fuel with the 125 shot
to 48ish cause my kit said anything below 39 psi
is unsafe.
i think maybe my fuel pressure is still a lil'low
for the 125. i'll drop the timing some and try it again with the same fuel psi
my car runs awesome with the 75 shot.
i starting to think maybe i didn't purge all the air outthe lines. i don't know whatever
thanks for the advice bro.i'll let you know how it goes.
![[patriot]](graemlins/patriot.gif)
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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KRZ89GT
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Member # 4273
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posted
quote:
Originally posted by street_illegal_stang:
255lph intake/bbk adj. fuel reg./24pd injectors
thanks for the support
so far i took it to the track(1/8 mile)
and scored a 7.56 @91-1.66 60ft(75 shot-.42jet)
at 10 degrees 44psi fuel.
125shot-.67jet
then lowerd the timing to 8 ,set the fp to 47psi
it ran real strong till 330' mark
a small pop sound happend right as i power shifted to 3rd?felt like it ran on seven after that then cleaned up
i got scared and put the other jet back in
hey whats up just wanted to ask what size jet you got on the vacumm side? late
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89' bLACk GT (stolen)
KRAZYFORDS
Posts: 353 | From: MICHOACAN | Registered: Mar 2004
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