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What upper pulley to run?
- Thread starter Mr. Unknown
- Start date
+1 Unless you are referring to 100 octane as "pump gas."
17# is the most I would push on 93.. and even then, I would go easy on the timing.
19# pussys...ive been on 19 since the begining and the past yr and a half on 23 psi :headbang: on 93 ...no issues at all
its all in the tune
how much timing?
its around 17 deg i think for pump and 20-21 on the race tune..i cant remember anymore
not too aggressive but it makes good power:burnout:
19# pussys...ive been on 19 since the begining and the past yr and a half on 23 psi :headbang: on 93 ...no issues at all
its all in the tune
+1 . 19# here and a kurgan tune 15.5-16 deg timing 93 octane. No issues, this is all consulting w kurgan.
As far as the pulley I would try a 3.6, but even then that might be over 21#. Run a 4# lower and 3.4 upper, that gives me 18.8-19psi all day.
its around 17 deg i think for pump and 20-21 on the race tune..i cant remember anymore
not too aggressive but it makes good power:burnout:
You might be ok running 19 psi with that low of timing, but you are kinda cutting the nuts off of it... There is a BIG difference in a 19 psi car with 17 degrees of timing and a 19 psi car with 22 degrees of timing...
i agree .. i went with the boost level i did mainly for the track and for race gas, wich is all i did with the car before i moved . but dialed it back for a pump tune cause i didnt want to change pulleys all the time.
it still put down 634/636 on the dyno on the pump tune
Ok so a 3.75 would in theory put you right at 19# but a 4.0 might be safer with pump gas, but it depends on the tune like said before
Ya but this is probably going to be a street tune. 22 degrees is squeezing every little bit out of it. I have a 21 psi 100 octane tune, but its track only.
whipple 2.3 , 23 psi , 17* STD ... it was over 90 deg and around 80% humidity , ill try and find my dyno sheet to make sure.
this little motor humps it big time. ive always avged very high 130s in the 1/4 like 137-139mph but i think the famous ford head problem has finally found its way under my hood.a new motor is in the works.
ahhh 23 psi makes more sense.....i thought we were still talking about 19 and i was like wtf?? :biggthumpwhipple 2.3 , 23 psi , 17* STD ... it was over 90 deg and around 80% humidity , ill try and find my dyno sheet to make sure.
this little motor humps it big time. ive always avged very high 130s in the 1/4 like 137-139mph but i think the famous ford head problem has finally found its way under my hood.a new motor is in the works.
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