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fine tuning demon carb? #91688 07/20/08 09:05 PM 07/20/08 09:05 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	bout to fire my car tommaro just installed electric fuel pump and road demon 725 any tips on fine tuning my new demon?

Re: fine tuning demon carb? #91689 07/20/08 09:19 PM 07/20/08 09:19 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	yah.. take that demon carb apart and clean it thoroughly. cross ur fingers and hope for the best.

Re: fine tuning demon carb? #91690 07/20/08 10:14 PM 07/20/08 10:14 PM
Joined: Jul 2004 Posts: 4,732 Watertown, WI MikeyT master
MikeyT master Joined: Jul 2004 Posts: 4,732 Watertown, WI	Yeah stupify real informative.... Ok here goes. Demons are pretty straight forward to tune. How do you want to tune it for? Basic use, strip, etc? Here is a trouble shooting page from Barry Grant which will help you with the basic set up. http://www.barrygrant.com/demon/default.aspx?page=28 I think your jet size might be a tricky point, so get yourself a basic tuning kit. Be aware of the idle mixture screws on the side. Turn them out slightly if its lean, turn in if its too rich. I hope it works out! Mike Last edited by 70sprbMT; 07/20/08 10:16 PM. 1969 Dodge Dart Swinger

Re: fine tuning demon carb? [Re: MikeyT] #91691 07/20/08 10:16 PM 07/20/08 10:16 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	really? how LITTLE do you know my friend.

Re: fine tuning demon carb? #91692 07/20/08 10:35 PM 07/20/08 10:35 PM
Joined: Jul 2004 Posts: 4,732 Watertown, WI MikeyT master
MikeyT master Joined: Jul 2004 Posts: 4,732 Watertown, WI	Quote: really? how LITTLE do you know my friend. Perhaps! My advice was pretty generic. However, I also offered a link to the Barry Grant site for tuning tips. Mike 1969 Dodge Dart Swinger

Re: fine tuning demon carb? #91693 07/20/08 11:08 PM 07/20/08 11:08 PM
Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada dave571 master
dave571 master Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada	Quote: bout to fire my car tommaro just installed electric fuel pump and road demon 725 any tips on fine tuning my new demon? There is a tuning guide available online for purchase, from www.4secondsflat.com I think there is an online video you can watch there at no charge. The road demon is the stock replacement style unit, so I hope your combo is fairly mild. If so, you will have no problems. PS, What is a tommaro?

Re: fine tuning demon carb? #91694 07/20/08 11:36 PM 07/20/08 11:36 PM
Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii DemonKyle USMC LCPL
DemonKyle USMC LCPL Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii	Quote: bout to fire my car tommaro just installed electric fuel pump and road demon 725 any tips on fine tuning my new demon? Go through the whole thing and make sure it is completely clean. BG doesnt have the best of reputations.

Re: fine tuning demon carb? [Re: DemonKyle] #91695 07/21/08 12:35 AM 07/21/08 12:35 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	yea i just bought it its just out of the box...what all bad have you heard about demon?...yea first non eddy style carb so i want all info i can get thaks

Re: fine tuning demon carb? #91696 07/21/08 12:40 AM 07/21/08 12:40 AM
Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii DemonKyle USMC LCPL
DemonKyle USMC LCPL Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii	Barry Grant does not have the best machineing quality. I've pulled slivers of metal out of fuel bowls and passageways. Passageways that aren't fully drilled. I was going to run a demon on my 360 until a passageway was not drilled out completely and caused it to go superlean and wasted to pushrods and a lifter. Now I have a holley 750 dp on it. IMO if it was me. I would return the demon and get a holley. We returned the demon to have BG go through it to check it out.... They mysteriously lost it..... BG Carbs are like thermo buggs. Unless you got one of the very few good ones... Youre really screwed

Re: fine tuning demon carb? [Re: dave571] #91697 07/21/08 01:23 AM 07/21/08 01:23 AM
Joined: Dec 2004 Posts: 5,278 San Jose, California D DennisH Vacation
DennisH Vacation D Joined: Dec 2004 Posts: 5,278 San Jose, California	I know less than little. The 850 DEMON on my 440 makes it run sweet.

Re: fine tuning demon carb? #91698 07/21/08 01:34 AM 07/21/08 01:34 AM
Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada dave571 master
dave571 master Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada	Quote: yea i just bought it its just out of the box...what all bad have you heard about demon?...yea first non eddy style carb so i want all info i can get thaks How about some details on your combo? Engine size, cam, headwork, exhaust, gears etc. it may prove useful for carb recomendations. As for BG quality control, I have seen some really poor ones also. However, I run a demon on my drag car, and love it, and also have a demon on my winni tow rig. I love it too. I do agree that you need to go through the carb checking for debris.

Re: fine tuning demon carb? #91699 07/21/08 10:13 AM 07/21/08 10:13 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: yah.. take that demon carb apart and clean it thoroughly. cross ur fingers and hope for the best. that's good advice. If the carb is bolted on & you are REALLY close to firing, it might be hard to take it back off & open it up & check it out but from the horror stories I've read if I had one I would discipline myself to do just that. I wouldn't want to take the chance. live every 24 hour block of time like it's your last day on earth

Re: fine tuning demon carb? [Re: dave571] #91700 07/21/08 12:46 PM 07/21/08 12:46 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Do as Dave says. www.4secondsflat.com has a free video and the tuning guide avilable for 20 bucks . Covers demon carb tuning(can be applied to Hollies) and also Ignition tuning which is important as you may never get the carb right if you dont have the ignition right to start. Oh on the clean the carb thing . always a good Idea who evers parts your buying. As for the horror stories a couple years ago BG did have a metal fragment issue with their carbs .But has since put in a new washing facility and strickter quaility controls which have eliminated that issue. Last edited by Racecarbob451; 07/21/08 12:50 PM.

Re: fine tuning demon carb? [Re: dave571] #91701 07/21/08 02:01 PM 07/21/08 02:01 PM
Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii DemonKyle USMC LCPL
DemonKyle USMC LCPL Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii	Quote: Quote: yea i just bought it its just out of the box...what all bad have you heard about demon?...yea first non eddy style carb so i want all info i can get thaks How about some details on your combo? Engine size, cam, headwork, exhaust, gears etc. it may prove useful for carb recomendations. As for BG quality control, I have seen some really poor ones also. However, I run a demon on my drag car, and love it, and also have a demon on my winni tow rig. I love it too. I do agree that you need to go through the carb checking for debris. Yea dont get me wrong. Demon carbs run like raped apes. It just depends on how good of a carb you get

Re: fine tuning demon carb? [Re: DemonKyle] #91702 07/22/08 02:15 PM 07/22/08 02:15 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	i like the feed back it has a torker 2 intake small cam 1 or 2 steps above rv no head work a beefed ignition system just a 440 nothing to hoped up electric fuel pump upgrade...nothin serious till this winter then the 725 is going on a small 400 project and im gettin a new carb for it...i used to run eddys trite and true but they have gone to hell i put 2 on this car idle mixture seat cracked and about busted out of it and the second 1 the secondaries would open up but it wouldnt fuel both new out of the box 1 week old carbs so i thought i would try demon i heard many good thing...did you notice much of a gain when you installed your demon? fuel,power,ect...?

Re: fine tuning demon carb? #91703 07/22/08 02:44 PM 07/22/08 02:44 PM
Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada dave571 master
dave571 master Joined: Dec 2003 Posts: 5,314 Carstairs, Alberta, Canada	Quote: i like the feed back it has a torker 2 intake small cam 1 or 2 steps above rv no head work a beefed ignition system just a 440 nothing to hoped up electric fuel pump upgrade...nothin serious till this winter then the 725 is going on a small 400 project and im gettin a new carb for it...i used to run eddys trite and true but they have gone to hell i put 2 on this car idle mixture seat cracked and about busted out of it and the second 1 the secondaries would open up but it wouldnt fuel both new out of the box 1 week old carbs so i thought i would try demon i heard many good thing...did you notice much of a gain when you installed your demon? fuel,power,ect...? Give the tuning guide a shot. I think the road demon is probably the wrong pick for you, but not too far off. A speed demon would have been better pick, but you may get it to work if you follow the guide. Any carb that you get set up rioght will work well. The key, is what carb will set up right for you.

Re: fine tuning demon carb? #91704 07/22/08 03:34 PM 07/22/08 03:34 PM
Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii DemonKyle USMC LCPL
DemonKyle USMC LCPL Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii	Quote: i like the feed back it has a torker 2 intake small cam 1 or 2 steps above rv no head work a beefed ignition system just a 440 nothing to hoped up electric fuel pump upgrade...nothin serious till this winter then the 725 is going on a small 400 project and im gettin a new carb for it...i used to run eddys trite and true but they have gone to hell i put 2 on this car idle mixture seat cracked and about busted out of it and the second 1 the secondaries would open up but it wouldnt fuel both new out of the box 1 week old carbs so i thought i would try demon i heard many good thing...did you notice much of a gain when you installed your demon? fuel,power,ect...? Just another piece of information. The demon is underated about 70 cfm. So your 725 is really closer to a 800 cfm carb

Re: fine tuning demon carb? [Re: DemonKyle] #91705 07/22/08 07:57 PM 07/22/08 07:57 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	so its ok?

Re: fine tuning demon carb? #91706 07/22/08 08:21 PM 07/22/08 08:21 PM
Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii DemonKyle USMC LCPL
DemonKyle USMC LCPL Joined: Jan 2005 Posts: 3,312 Marine Corps Base Hawaii	Sounds like it should work fine... But like I previously stated, I can't stress cleaning the ENTIRE carb before running it

Re: fine tuning demon carb? [Re: DemonKyle] #91707 07/22/08 08:52 PM 07/22/08 08:52 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	yea i watched that video and i will do

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