Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Dialing in your rebuilt Quadrajet carburetor => Topic started by: cnc on October 01, 2017, 03:34:21 PM

Title: Changes to q jet???
Post by: cnc on October 01, 2017, 03:34:21 PM
Hi Cliff
You did a carb for me for my car oh couple years ago I think works well....
 1973 Firebird Navajo Orange w/shaker,1973 400/461,1972 Intake SD CNC'd, 1977 Q-Jet 800 CFM w/ Cliffs Kit,Tanks Inc PA4 255 Walbro intank pump kit ,-8an feed/return,RobbMc Regulator,RobbMc 40 micron filter,253 CFM 6x-8's w/H.S 1:5 Full Roller Rockers,SD Performance STUMP PULLER H/R Cam 230/236 @.050 112 lobe separation,565/.570 lift,Crower Solid Rollers,28150 Hedman Headers,3" X Pipe,350 Turbo,13"Continental 2800 Stall,3:42 gear,8.5 posi,C/E slide-a-links.Best 12.19 @111.66

This past winter I upgrade the cast iron intake to a Rugglized Port job care of SD Performance and changed out the x-pipe to 3 inch from 2 1/2. But retained the 2 1/2 muffler  with tailpipes...
I also added subframe connectors and had the rear springs de arched to have the car sit a little lower
I also changed tire size last year 275/60/15 ...Hoosier drag radials ...this year 255/60/15 Mickey Thompson Street SS radial
Best time is in my sig which I ran last year
This year I just can't seem to. Hit that teen night bet again

I'm just curious that with the changes do I need to fatten up the q jet some.....???
Thanks  Cliff


Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 02, 2017, 02:37:13 AM
If you are drag racing and want to custom tune at the track we can machine a couple of sets of metering rods.  That is the best way to tune at the track vs trying to use factory rods as you don't need to change the hanger with custom rods and changes are far more accurate.....Cliff
Title: Re: Changes to q jet???
Post by: cnc on October 02, 2017, 04:07:23 AM
Ok Cliff that's an idea
I'm not sure what I have in there now....I'll pull them and see and get back to u....I guess that's we need to do first yes...
Talk soon enough......track could be closed end of the month....last year we raced into November ..that's when I ran the 12:19....
Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 03, 2017, 04:10:14 AM
You may actually find quicker ET's by leaning it up some.  Engine changes to make things more efficient often require less fuel than adding more fuel......Cliff
Title: Re: Changes to q jet???
Post by: cnc on October 03, 2017, 05:41:17 PM
So really all I need to do is pull the sec hanger and tell u the rods...do u need the hanger ID...
It's the same carb u run.... ;)

Quick question then turn around time for rods roughly.....thanks Cliff......Chris
Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 04, 2017, 05:13:34 AM
Usually 1-2 days for custom machined metering rods....
Title: Re: Changes to q jet???
Post by: cnc on October 05, 2017, 03:38:54 AM
I'll pull them tomorrow nite....and post back...thanks Cliff....
Title: Re: Changes to q jet???
Post by: cnc on October 06, 2017, 03:44:33 PM
Hi Cliff looks like " DA " rods with the factory " N " hanger...

What do u think about custom rods for me to try out....Chris
Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 07, 2017, 02:33:47 AM
With metering rod changes at the track you just have to make a good pass with traction, change them, then repeat the scenario and see if it likes what you did?

If you are using DA rods those are .044" tips.  I'd try at least one set about .005" richer and one set .005" leaner and see how it responds.......Cliff
Title: Re: Changes to q jet???
Post by: cnc on October 07, 2017, 05:04:59 AM
Ok Cliff
What are a set of rods custom made for me shipped to Canada
Chris Dale
449 Beachwood Ave
London Ont
Canada
N6J3J9

U can email me cncdale@sympatico.ca if u like...Chris

Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 08, 2017, 05:04:13 AM
Metering rods ship cheap as we put them in an envelope stuck into blue foam insulation to keep them from being damaged.

$15 per pair to machine them plus shipping...
Title: Re: Changes to q jet???
Post by: cnc on October 08, 2017, 06:44:10 AM
Ok  let's do it Cliff let's do what u suggest
Let me know payment details and I'll send it out
Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 09, 2017, 03:15:15 AM
How many pairs to do want and in what sizes?
Title: Re: Changes to q jet???
Post by: cnc on October 09, 2017, 05:38:50 AM
With metering rod changes at the track you just have to make a good pass with traction, change them, then repeat the scenario and see if it likes what you did?

If you are using DA rods those are .044" tips.  I'd try at least one set about .005" richer and one set .005" leaner and see how it responds.......Cliff

Let's do what u suggested
Title: Re: Changes to q jet???
Post by: Cliff Ruggles on October 10, 2017, 02:27:30 AM
I'll get them machined today.

When you get time call the shop and we'll get them headed your way...tks....Cliff
Title: Re: Changes to q jet???
Post by: cnc on October 10, 2017, 04:10:58 AM
Ok Cliff
I'll call today sometime...thanks Chris
Title: Re: Changes to q jet???
Post by: cnc on October 10, 2017, 05:50:13 AM
made the call today cliff
Title: Re: Changes to q jet???
Post by: cnc on October 14, 2017, 09:59:43 AM
Just checking Cliff did the rods go out,,,  hope to get them and try em out maybe next weekend....