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Demon carb. Need Help?

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Old 07-04-2006, 12:09 AM
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Crump_4
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Default Demon carb. Need Help?

Has anyone had any trouble tuning or running any Barrry Grant Demons?
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Old 07-04-2006, 12:15 AM
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Default RE: Demon carb. Need Help?

bump
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Old 07-04-2006, 12:18 AM
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Default RE: Demon carb. Need Help?

c'mon guys a little help?
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Old 07-04-2006, 12:31 AM
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Default RE: Demon carb. Need Help?

anyone?
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Old 07-04-2006, 12:31 AM
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ZachW04Stang
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Default RE: Demon carb. Need Help?

Whats the problem? How big of a carb did you get? What else do you have done to the car?
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Old 07-04-2006, 12:33 AM
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tokinGLX
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Default RE: Demon carb. Need Help?

i dont run a bg, but are they not basically holley clones¿ from what i have heard of them they are excellent carbs.

and next time dont be so impaitent. 6 minutes is far too soon to be bumping your post
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Old 07-04-2006, 12:40 AM
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Crump_4
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Default RE: Demon carb. Need Help?

ORIGINAL: ZachW04Stang

Whats the problem? How big of a carb did you get? What else do you have done to the car?
Running comp cams Aluminum heads 2.05I, 1.60E, Scat crank and rods, fordged pistons, Victor Jr intake , all MSD. I just cant get the secondarys to come in until 4000 RPM on the engine Dyno, oh and an XE274HR Comp Cams roller cam w. 1.6 RR. Intunals are fully balanced. Carb is a Seed Demon Vacum Sec w/ mech choke that was recommened by Barry Grant. Engine is a full roller.
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Old 07-04-2006, 01:11 AM
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ZachW04Stang
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Default RE: Demon carb. Need Help?

Well I definitly would have gone with mechanical secondaries, much easier to tune the secondaries then with a vacuum pump to open them. You will have to replace the secondary spring with a looser one to make them open sooner.
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Old 07-05-2006, 10:37 PM
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Default RE: Demon carb. Need Help?

ORIGINAL: ZachW04Stang

Well I definitly would have gone with mechanical secondaries, much easier to tune the secondaries then with a vacuum pump to open them. You will have to replace the secondary spring with a looser one to make them open sooner.
You where right Zach, I got a 650 w. mech sec. and tuned the engine. Made 7 pulls and got a whopping 402HP and 428.71 flbtq

[IMG]local://upfiles/32019/6CEE89BDDB7E40EB9FA22AC32E17CDD1.jpg[/IMG]
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Old 07-05-2006, 11:03 PM
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Arrid Extra Dry
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Default RE: Demon carb. Need Help?

i dont know alot about barry grants, and i dont run bg's but..it depends on what BG carb your running,
sometimes they put an adjustment screw under the breather stud, check that first
take your stud out, stick a screw driver down there, and try that
second..... it should have 4 little tiny orphase breather thingamododgers? or whatever lol
on the very top of your carb ...one for each hole
try sticking a little piece of wire down in them to stop them up or restrict the air flow to them
they are hard to see, there should be 4 of them on the very top of your carb, with little bitty allen screws
might have to order some smaller ones to screw back in there...if they even make them, i dont know
if you bought your carb brand new out of the box ,and its hard to tune...this is probably whats wrong with it
dont try calling barry grant tech line .. they dont know anything... i know lol
good luck
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