percy's adjust a jet???

68dustin

Member

Oct 8, 2008

173

2

19

Oct 21, 2008

#1

• Oct 21, 2008

• #1

has anybody ever tried these percy's adjust a jets?? looking for an easier tune at the track instead of making a mess on my motor... let me know what u guys think of them..
Percy's High Performance 15001 - Percy's Adjust-A-Jet - summitracing.com

 

B

bnickel

Founding Member

Aug 21, 2002

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lubbock, texas

Oct 21, 2008

#2

• Oct 21, 2008

• #2

i have heard good things about the adjust a jet and they definitely would making tuning easier

 

68dustin

Member

Oct 8, 2008

173

2

19

Oct 21, 2008

#3

• Oct 21, 2008

• #3

i know what u mean...i think i might just buy the secondary side and see how i like it... i have mine running pretty rich, but im too lazy to try to jet it down and play with it. just a pain in the ass...

 

wild70stang

New Member

Nov 11, 2005

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Oct 21, 2008

#4

• Oct 21, 2008

• #4

I am sure this idea has been around for a while, just wondering why holley hasn't come out with a carb with that feature.

 

68dustin

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Oct 8, 2008

173

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Oct 21, 2008

#5

• Oct 21, 2008

• #5

i've looked around on other forums and havent found really anything bad about them. the only thing that seems common is: they leak under boost. which i dont have a supercharger so im good..

 

blown65

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Jul 7, 1999

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Queen Creek Arizona

Oct 21, 2008

#6

• Oct 21, 2008

• #6

I had them, never really cared for them. I actually still have a set here sitting in my office collecting dust after about 5 or so yrs. lol

 

rbohm

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Apr 12, 2002

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tucson,az

Oct 21, 2008

#7

• Oct 21, 2008

• #7

wild70stang said:

I am sure this idea has been around for a while, just wondering why holley hasn't come out with a carb with that feature.

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because holley makes a ton of money selling jets and other tuning items for their carbs.

as for the percys adjust a jet, they are an interesting idea, and have been around since the mid 70's in one form or another. some even use the jets that come in the carb, and you adjust the fuel flow through those jets, so you can jet rich for the track, and then adjust down for the street when ever you want.

 

68dustin

Member

Oct 8, 2008

173

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Oct 21, 2008

#8

• Oct 21, 2008

• #8

blown65 said:

I had them, never really cared for them. I actually still have a set here sitting in my office collecting dust after about 5 or so yrs. lol

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what kind are they?? wanna sell?

 

2bav8

Founding Member

Nov 30, 1998

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Mesa, AZ

Oct 21, 2008

#9

• Oct 21, 2008

• #9

I have two sets of the adjust-a-jets from Holley laying around. Basically the same thing as the Percy's set.
My problem is they lengthen the carb fuel inlets requiring a custom fuel intake line and reduced my ability to run a low profile air cleaner. Add to that, you never "really" know what your jetting is and I decided to take them off my carb(s).

Now I use the quick-change fuel bowls. Been very happy with them and haven't looked back since.

 

iskwezm

10 Year Member

May 24, 2005

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Rowland Heights,California

Oct 22, 2008

#10

• Oct 22, 2008

• #10

i used the Percy's and it worked pretty good...................now its in my tool box

 

68dustin

Member

Oct 8, 2008

173

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Oct 22, 2008

#11

• Oct 22, 2008

• #11

iskwezm said:

i used the Percy's and it worked pretty good...................now its in my tool box

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i belive that percy's adjust a jet have a way to let you know where ur at in jets by turns... why arent u using them anymore?

 

iskwezm

10 Year Member

May 24, 2005

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Rowland Heights,California

Oct 22, 2008

#12

• Oct 22, 2008

• #12

68dustin said:

i belive that percy's adjust a jet have a way to let you know where ur at in jets by turns... why arent u using them anymore?

Click to expand...

I think i switched carbs back then.I liked it, never had a problem with it,just couldnt tell what jet size it was equal too.