Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: 1050 Alky Barry Grant Carb Help

  1. #1

    1050 Alky Barry Grant Carb Help

    i bought a 1050 Barry Grant Alky Dominator Carb and i know NOTHING about carbs at all ( I allways run injection)... I had it up at the grove today and my first pass was a 9.63 at 139mph (very slow) with a lil 850 carb i was going 9.40's. any way the 2nd pass it went 9.57 at 140mph still slow but very unconsitant.... there was no temp build i left a 180 and went through the traps at the same temp... but the car poped like 4 times going down the track... no temp means it is fat but the popping means it lean right?

    ok ill give some spect's jettin in carb is 160 front and 164 the back. The carb has bowl exstention's front and back.. aswell as jet exstentions (onley in back)...
    car spects 69 Camaro 3100lbs with a 461 alum rod motor w/bb2 xtra heads..

    in my head the jets sound low b/c my old nickerson carb had 177 to 185 jets....

    Any Help would be great thanks
    Bob Murphy Jr


  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998

    Re: 1050 Alky Barry Grant Carb Help

    Quote Originally Posted by MurphyLawX169
    i bought a 1050 Barry Grant Alky Dominator Carb and i know NOTHING about carbs at all ( I allways run injection)... I had it up at the grove today and my first pass was a 9.63 at 139mph (very slow) with a lil 850 carb i was going 9.40's. any way the 2nd pass it went 9.57 at 140mph still slow but very unconsitant.... there was no temp build i left a 180 and went through the traps at the same temp... but the car poped like 4 times going down the track... no temp means it is fat but the popping means it lean right?

    ok ill give some spect's jettin in carb is 160 front and 164 the back. The carb has bowl exstention's front and back.. aswell as jet exstentions (onley in back)...
    car spects 69 Camaro 3100lbs with a 461 alum rod motor w/bb2 xtra heads..

    in my head the jets sound low b/c my old nickerson carb had 177 to 185 jets....

    Any Help would be great thanks
    Bob Murphy Jr


    A really rich carb can give you lean conditions also. If it were mine I'd keep jetting it up untill it fell off in ET.. I'd start with 186's squared. I take it this car had a 850 alky carb on it ? If not did you change timing/plugs check float levels, pressure ? Just simple things to rule out.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  3. #3
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
    Location
    Florida
    Posts
    635
    Start at 190. BG list that as having 185's

    http://www.barrygrant.com/demon/defa...=29&specs=29kk
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  4. #4

    Re: 1050 Alky Barry Grant Carb Help

    Quote Originally Posted by hammertime
    A really rich carb can give you lean conditions also. If it were mine I'd keep jetting it up untill it fell off in ET.. I'd start with 186's squared. I take it this car had a 850 alky carb on it ? If not did you change timing/plugs check float levels, pressure ? Just simple things to rule out.

    Can a very lean carb give you rich conditions??? yes it was an 850 alky, i checked flot levels when i put carb on..

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998

    Re: 1050 Alky Barry Grant Carb Help

    Quote Originally Posted by MurphyLawX169
    Quote Originally Posted by hammertime
    A really rich carb can give you lean conditions also. If it were mine I'd keep jetting it up untill it fell off in ET.. I'd start with 186's squared. I take it this car had a 850 alky carb on it ? If not did you change timing/plugs check float levels, pressure ? Just simple things to rule out.

    Can a very lean carb give you rich conditions??? yes it was an 850 alky, i checked flot levels when i put carb on..

    Not that i've seen if its lean its lean, but can be so rich it give you a lean condition. The BG may not be as good as your 850 was, BG is known for having very poor alky carbs.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  6. #6
    poor alky carbs??? unconsittant? or slower or both

    my barry grant is a dominator
    and my 850 Nickerson isnt

    and what you said about the lean trick that would me put my jetting lower than 160... that sounds low dont it?? the 186 idea you said earler sounded more like in the ball park b/c i remember carb jetting beieng from 178 to 190 NOT AS LOW A 160 and thats where im at right now...

    lower # is leaner right?

    on my inj (terminator) it's lower# is fatter.

  7. #7
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    Quote Originally Posted by MurphyLawX169
    poor alky carbs??? unconsittant? or slower or both

    my barry grant is a dominator
    and my 850 Nickerson isnt

    and what you said about the lean trick that would me put my jetting lower than 160... that sounds low dont it?? the 186 idea you said earler sounded more like in the ball park b/c i remember carb jetting beieng from 178 to 190 NOT AS LOW A 160 and thats where im at right now...

    lower # is leaner right?

    on my inj (terminator) it's lower# is fatter.
    Barry Grant has been known for both slow and inconsistent just like your seeing. If it were my setup I'd do this put the bigger jet in it, you might just be plain lean, putting a bigger jet in it will tell you fast if it slows down more and still has the pop you know its the wrong way if it picks up you went the right way. 160 jet is to low IMO, lower # is leaner just the opposite of the terminator. A good worked over smaller carb such as your 850 can be made to work better then a out of box carb more often then not. Just go up with it .. lean hurts parts !
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  8. #8
    kool thanks 4 the help,,, ill repost on sunday for a turn out of what happend ... im gonna put in 186 jets to start and go from there..

  9. #9
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    Quote Originally Posted by MurphyLawX169
    kool thanks 4 the help,,, ill repost on sunday for a turn out of what happend ... im gonna put in 186 jets to start and go from there..
    No problem let us know what you find.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  10. #10
    Hammertime... i went back up to the grove today and i put 185 jets in the car and it got worse.. last time my slow et was an uncosistant 9.63 and today it was a 9.67 @139 so my second t/s i through my lil 850 nickerson carb on it and went a 9.570 and backed it up with a 9.573 both @141mph... i dont know what to do wit this Barry Grant carb, i mean its like brand new is there anything else i can try?


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy