DEMONS With IDLEZE...Please Read

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Aug 24, 2005 | 12:24 PM

nastee383

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Melting Slicks

Joined: Apr 2000

Posts: 2,145

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From: Ft. Walton Beach, Fl USA

DEMONS With IDLEZE...Please Read

If you have a DEMON with IDLEZE, how many turns counter clockwise did it take for you to fine tune your idle?

Aug 24, 2005 | 01:21 PM

lars

Tech Contributor

Joined: Aug 1999

Posts: 14,379

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From: At my Bar drinking and wrenching in Lafayette Colorado

Close it completely and set up your idle speed by balancing the primary and secondary throttle blades at .020" transition slot exposure. Then balance your idle mixtures and re-set idle speed by adjustig pri and sec idle speeds equally. No need to use the Idle EZ - it has little to no effect, and merely creates an un-needed vacuum leak.

Aug 24, 2005 | 04:04 PM

Boofers

Drifting

Joined: Nov 2002

Posts: 1,665

Likes: 1

From: Ontario

Quote:

Originally Posted by lars

No need to use the Idle EZ - it has little to no effect, and merely creates an un-needed vacuum leak.

Sounds like they should have named it IDLELEAKY.

Aug 24, 2005 | 06:59 PM

Silver00V6Camaro

Drifting

Joined: May 2004

Posts: 1,258

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From: Huntsville Alabama

Quote:

Originally Posted by lars

Will this work with all carbs or just this one I have a holley 4160 model it is a 600 cfm. Sorry about the tread hijack figured It might help not only me but maybe someone else. Thanks

Aug 24, 2005 | 07:55 PM

nastee383

Thread Starter

Melting Slicks

Joined: Apr 2000

Posts: 2,145

Likes: 1

From: Ft. Walton Beach, Fl USA

Quote:

Originally Posted by lars

I set the throttle blades at .020 and the car won't start. It'll only run when I open the throttle blade using the curb idle screw. Then it idles too high, 1600 rpm. If I slowly close the throttle blades it dies @ 1400 rpm and belches out white smoke from the carb. The mixture screws are worthless with the throttle blades open. I've tried disconnecting the vac adv., different float levels, idleze closed, idleze open from 1.5 turns up to 5 turns, fuel pressure from 4 psi to 7 psi, mixture screws from 1 turn out to 2.5 turns out, less timing, more timing. It'll only fire if I have the throttle wide open as I crank it. I don't know what else to do. I've gone through a starter and 5 gallons of gas over 2 weeks trying to get this thing to idle properly. I'm going

Aug 24, 2005 | 08:57 PM

73C34me

Burning Brakes

Joined: Jun 2005

Posts: 1,131

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From: laingsburg MI

2020 C3 of the Year Finalist - Modified

Not a lot of info as far as motor specs, but... I would offer that you need to reduce the size of your idle feed restrictor. This will lean out your idle speed amount of fuel. I believe it will effect all range of rpm, but most noticable on idle. I have a mighty demon on my 383 & needed to do this. before idle rpm was 1250 & choppy. Post modification it will idle at 900 rpm & die at 500. This was waaay more effective than changing the low speed air bleeds.

Aug 24, 2005 | 10:32 PM

ylose

Melting Slicks

Joined: Aug 2001

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From: Elkhorn WI

Hope you get to your issue.

I have used three Demon carbs without issues. 2 ZZ4 Demon carbs and now a Mighty 650BT (Blow-through)

Use the LARS demon guide.

Aug 25, 2005 | 11:08 AM

lars

Tech Contributor

Joined: Aug 1999

Posts: 14,379

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From: At my Bar drinking and wrenching in Lafayette Colorado

Quote:

Originally Posted by nastee383

It'll only fire if I have the throttle wide open as I crank it.

You have problems far more significant than the adjustment of the IdleEZ.... If you have to hold the throttle wide open to start, and cannot obtain idle below 1400 rpm, you either have engine problems not related to the carb, or you have a carb that is grossly flooding out the engine due to some defect, or a massive vacuum leak, such as an open PCV vacuum port. Check, verify and set timing at 36 degree total to rule out ignition problems, and then troubleshoot your issues - you don't have an adjustment issue - you have a significant technical problem. You may want to swap out carb with another carb to assist in your troubleshooting. If you want, you can send me your BG carb and I can check it, set it up, and verify it for you.
Lars

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Aug 25, 2005 | 12:30 PM

OldSchool

Pro

Joined: Mar 2003

Posts: 553

Likes: 1

From: Valparaiso IN

Quote:

Originally Posted by ylose

Use the LARS demon guide.

Anybody have a link to this?

Aug 25, 2005 | 03:01 PM

#10

lars

Tech Contributor

Joined: Aug 1999

Posts: 14,379

Likes: 6,390

From: At my Bar drinking and wrenching in Lafayette Colorado

Quote:

Originally Posted by OldSchool

Anybody have a link to this?

Right now, my home computer is down, and I can't respond to e-mails or send out anything. But if you drop me an e-mail request for the paper, I'll send you a clean current copy of the procedure as soon as I get back up on-line again:
V8FastCars@msn.com

Aug 25, 2005 | 03:03 PM

#11

OldSchool

Pro

Joined: Mar 2003

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From: Valparaiso IN

Quote:

Originally Posted by lars

Thanks Lars..Email sent

Steve

Aug 27, 2005 | 06:08 AM

#12

nastee383

Thread Starter

Melting Slicks

Joined: Apr 2000

Posts: 2,145

Likes: 1

From: Ft. Walton Beach, Fl USA

Quote:

Originally Posted by ylose

Hope you get to your issue.

I have used three Demon carbs without issues. 2 ZZ4 Demon carbs and now a Mighty 650BT (Blow-through)

Use the LARS demon guide.

This is my first DEMON. It seems simple enough. I ordered it Dec 04 and just got around to installing it recently. Once I started looking at it closely it appears it may have been tampered with and then returned. Some of the hex screws are mangled. It is a Speed DEMON and BG says all Speed DEMONS come with a progressive secondary link but this carb has a one to one link on it. If that is the case I'm stuck because the warranty has expired and the 90 day return period is long gone.

Aug 27, 2005 | 06:22 AM

#13

nastee383

Thread Starter

Melting Slicks

Joined: Apr 2000

Posts: 2,145

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From: Ft. Walton Beach, Fl USA

Quote:

Originally Posted by lars

I'm almost certain it's not engine related. When the motor is running it sounds good with no missing/stumbling etc. It's pulling 16 in. of vacuum when it's running at 1600prm. (242/248 @ .050 HR cam) It responds instantly to throttle input, doesn't overheat or anything. I do believe it's flooding or getting too much fuel somehow. I don't have a full exhaust on it yet, only about 2' of pipe out of the collector and it is black and sooty in the pipes but it isn't bellowing black smoke. As I stated in another reply, I believe the carb was tampered with and sent back. There are some signs that I didn't notice until I started closer inspection when I couldn't get it to idle right.

If I wanted to send it to you to look at and setup, how would I go about getting it to you (address) and how much do you charge for this? I have a few more things I'm gonna try first though. I appreciate your reply to this post.