Where am I going wrong?
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Postmaster
Joined: Feb 2003
Posts: 3,441
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From: Muskegon, MI (home)
Where am I going wrong?
I have a problem thats really kickin my ****! I recently installed a brand new Holley 2bbl carb on my 300 six. It's a 2300 series carburetor 350 CFM with manual choke sitting on a Cliffords adapter plate with the stock intake and EFI manifolds. My problem is, I have no power. When I'm going down the road and stomp the pedal to the floor it stumbles and backfires through the carburetor and out the tailpipes. After running it for a while the exhaust manifolds start to glow red hot. I have adjusted my float levels and mixture screws, at first it was too lean I have fattened it up a bit. I have been able to get it to run halfway decent, but still no power. I really don't want to put the 1bbl back on, but this is driving me nuts! Any ideas?
Last edited by Pkupman82; Feb 8, 2005 at 12:27 PM.
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Postmaster
Joined: Feb 2003
Posts: 3,441
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From: Muskegon, MI (home)
Yeah I was wondering about the timing, and I'll double check it to make sure. I think I'm still running lean. Last time I was working on it, I richened up both mixture screws and the manifolds started to glow, but not as bad as before. I'll check the timing, and mess with the mixture screws tonight, and let you know what comes out. Thanx for your help!
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Joined: Apr 2000
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From: La Verne, California
The other problem other than timing is the Fact that you may increased the Petrol Flow, but you haven't increased the Breathing capeablity of the engine.
That is one of the Main reasons for No power that you are suffering from.
You need to Install an Offenhauser, Fenton, etc., Intake in order to experience the Power Increase you desire, though the EFI Exhaust is a step in the right direction.
W/O allowing the engine to breath properly you'll Not get the Desired power increase that you are looking for.
That is one of the Main reasons for No power that you are suffering from.
You need to Install an Offenhauser, Fenton, etc., Intake in order to experience the Power Increase you desire, though the EFI Exhaust is a step in the right direction.
W/O allowing the engine to breath properly you'll Not get the Desired power increase that you are looking for.
Last edited by Col Flashman; Feb 8, 2005 at 11:33 PM.
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Postmaster
Joined: Feb 2003
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From: Muskegon, MI (home)
Finally got it going last night! I discovered the timing was 30 degrees advanced. The manifolds don't glow anymore, she purrs like a kitten, and it has much more power now! Don't I feel like an idiot! The idle is a bit on the high side about 1050 rpm, I would like bring it down to about 800 rpm. Now that the timing is good. I should be able to finally fine tune the carburetor. I still need to install the cable for the manual choke control. I plan on finishing it up tonight, hopefully I'll finally have er on the road.
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Joined: May 2004
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general rule of thumb i have learned, never, never try setting a carb unless you are sure that your timing is right and it is firing right. i watched a friend be puzzled for months about his carb and why it wouldn't run right, he kept setting it rich and i was telling him it was rich but he said how this was the best way it ran, i then told him to check if it was firing right, he said it was...... well last week he put in a new distributer and all of a sudden everything worked right and he put the carb to where i told him too in the first place. i was watching boyd cottington one night and was so ****ed cause they couldn't get the car to run right...i was watching TV and could tell by the way it sounded that they needed to adjust the timing, but no... they play with the carb.... DOH!!!!
