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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: Sport440]
#679088
04/24/10 10:44 PM
04/24/10 10:44 PM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
OP
master
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OP
master
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
Im not sure I like the idea of tuning late opening secondaries with more pump shot or squirters.
If your running a single plane you could end up over richening the front 4 cylinders while leaning out the back 4 cylinders.
While it may eliminate the bog, overall you could hurt its "launch" performance. By X amount of cyl being rich and X amount being a bit lean. If your running a DPlane intake the effects will be less.
Id tune the secondary bog with the Springs first, witch you did. 
Id like to add that even though the Bog is now gone. Id would still try a spring one size heavier at the track to see if it effects ET.
Just because the bogs gone doesnt mean the secondary opening rate is at optimum.
But it very well could be. At this point with the Bog gone, your probably near the top of the carbs Tune
With the combination of Squirters, pumps, pump cams, air jets, main jets, and in your case secondary springs, Do we ever get that perfect carb tune. Probably not but we can get her darn close.  mike
EDIT,  Id run as is for now, let the kid have some Fun, mike
Thanks Mike and appreciate the input
Rickster
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: bonefish]
#679091
04/26/10 11:31 AM
04/26/10 11:31 AM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
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master
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OP
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
i got a mech.750 that works perfect if you want to play with it.
Thanks Al, might take you up on that in the future....where are you in SWF...?????
Rickster
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: QWK_ENUF]
#679093
04/26/10 07:08 PM
04/26/10 07:08 PM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
OP
master
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
IS THE LITTLE BALL BEARING still in the housing.it conrols the opeening rate and keeps the secondaries from flopping open too quick
No it's not and I believe even Holley leaves them out of the newer models nowadays.... 
Rickster
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: rickstershemi]
#679094
04/26/10 08:01 PM
04/26/10 08:01 PM
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Joined: Nov 2004
Posts: 7,274
s.w.fl
bonefish
master
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master
Joined: Nov 2004
Posts: 7,274
s.w.fl
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Quote:
Quote:
i got a mech.750 that works perfect if you want to play with it.
Thanks Al, might take you up on that in the future....where are you in SWF...?????
Rickster
right next door BURRITO SPRINGS
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: bonefish]
#679095
04/26/10 08:12 PM
04/26/10 08:12 PM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
OP
master
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OP
master
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
Quote:
Quote:
i got a mech.750 that works perfect if you want to play with it.
Thanks Al, might take you up on that in the future....where are you in SWF...?????
Rickster
right next door BURRITO SPRINGS
BURRITO SPRINGS , know it well, I built the Prado @ Spring Creek Plaza & Regal Cinema, Congress Jeweler's Building, also Granada Shoppes down the road in Naples.....we should get together one day for some cold ones....
Rickster
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: rickstershemi]
#679096
04/26/10 09:27 PM
04/26/10 09:27 PM
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Joined: Nov 2004
Posts: 7,274
s.w.fl
bonefish
master
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master
Joined: Nov 2004
Posts: 7,274
s.w.fl
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Quote:
Quote:
Quote:
Quote:
i got a mech.750 that works perfect if you want to play with it.
Thanks Al, might take you up on that in the future....where are you in SWF...?????
Rickster
right next door BURRITO SPRINGS
BURRITO SPRINGS , know it well, I built the Prado @ Spring Creek Plaza & Regal Cinema, Congress Jeweler's Building, also Granada Shoppes down the road in Naples.....we should get together one day for some cold ones....
Rickster
sounds good if i ever get to take my car out ill give yua a shout,its only been a year so im about due 
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: rickstershemi]
#679098
04/26/10 10:22 PM
04/26/10 10:22 PM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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i have run that combo if it has a dead spot because lack of gas not spring nothing wrong with a 600 vac either i had both 600 and 750 dpp 600 only 10 off the 750 750 was used but was redone 600 was new put jets in both and small(litest) spring in the 600 ran 82 in the 750 in the spring time 80 in the summer 600 ran 80 in all time drill the back plate    
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Re: {{{{{{{{{{{ VACUUM SECONDARY QUESTION }}}}}}}}}}}}}
[Re: dennismopar73]
#679099
04/27/10 07:41 AM
04/27/10 07:41 AM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
OP
master
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OP
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
i have run that combo
if it has a dead spot because lack of gas not spring
nothing wrong with a 600 vac either
i had both 600 and 750 dpp
600 only 10 off the 750
750 was used but was redone
600 was new
put jets in both
and small(litest) spring in the 600
ran 82 in the 750 in the spring time 80 in
the summer
600 ran 80 in all time
drill the back plate
Dennis when you say (SMALL) are you reffering to the shortest spring...????? I was kinda confused with the springs being short and long....?????
Do have an assortment of jets to try, a little more info on drilling the secondary plate would be appreciated....???????
Rickster
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