Mighty Demon Idle Feed Restrictors
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Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Mighty Demon Idle Feed Restrictors
Got some time tonight to play with the car. I had put in .031 IFR in place of the stock .037 IFR. I started it up and it idled much better. I let it warm up and took it for a ride. I did not make it out of the street and I knew it was wrong. A quick trip arounf the neighborhood and it was bucking and felt like it was starving for fuel. Give it a little gas and it cleared up. Back to the IFRs.
Drilled them out to .033. Buttoned it back up and what a difference. Idled good, good throttle response and it cruised at 2000 to 2500 rpm a smooth a possible. I even dropped it into 5th gear and lugged it down to 1500 rpm and it was fine. Gave it some throttle and it just increased speed without a problem. Seems hard to beleive that .002 would make that much difference. I can now make it to the shop to have the collecter to exhaust pipe made with a bung to hook up the LM1 and really tune it in.
BTW I am running the timing at 22 initial with 36 total. No vacuum advance right now but I might put it to a ported port in the future. No starting problems and it runs very good this way. Idles rock solid at 900 rpm. I can go lower but why.
Drilled them out to .033. Buttoned it back up and what a difference. Idled good, good throttle response and it cruised at 2000 to 2500 rpm a smooth a possible. I even dropped it into 5th gear and lugged it down to 1500 rpm and it was fine. Gave it some throttle and it just increased speed without a problem. Seems hard to beleive that .002 would make that much difference. I can now make it to the shop to have the collecter to exhaust pipe made with a bung to hook up the LM1 and really tune it in.
BTW I am running the timing at 22 initial with 36 total. No vacuum advance right now but I might put it to a ported port in the future. No starting problems and it runs very good this way. Idles rock solid at 900 rpm. I can go lower but why.
Race Director
Joined: Feb 1999
Posts: 19,659
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Originally Posted by TJ76
Way to go. You'll like it. Get that LM-1 hooked-up and you will realize alot of things about your carb. It's like opening up a can of worms.
TJ
TJ
This is what I am afraid of. Good luck with the LM-1 when you get it all installed. I am really wanting to buy one to play with also. I know you and Motorhead both have one. So, at least I know I will not be alone in this. Should be able to really get the carb where it should be. Keep us/me posted.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
