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Post by xxx30 on May 20, 2014 21:28:04 GMT -6
Still running manifolds for the time being and ever since I put the new motor in the right exhaust manifold has been glowing. Jetting is great all plugs are a nice almond color it's not overheating and timing has been checked over and over again no dieseling but manifold still glows. The manifolds are off of a chevy camaro 305 and the last bolt hole doesn't line up is it possible that it's sucking air and causing this condition?
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Post by duckhnter83 on May 21, 2014 7:37:26 GMT -6
Yep I bet you have an exhaust leak and that will cause the headers to glow
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Post by Krooser on May 21, 2014 8:59:01 GMT -6
Hog out that bolt hole and get that manifold tight… if it's sucking air that will be your answer.
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Post by flipflopoo1oo on May 22, 2014 20:20:57 GMT -6
Un-burned fuel is the only thing I know of that causes this! Float level too high will slosh it over or a grain of sand in the idle vent tube at the front of a 4412 Holley! Look inside and watch the flow side to side! A plugs looks should be white and clean, read the number of wet threads with oil at any time you please! Even now! The oil cushion needs to be three on number 3 cylinder and not all on number eight! If burning in the pipes it can cause it to draw making it look lean with too much fuel the fault! Too low of timing to jetting or fuel octane too high for timing or compression will do this also! So will too much K&N oil on the filter once correct! Too much top lube! Check compression, only 175 up needs racing fuels! a bent push rod or tight intake valve or mismatched heads or gaskets or a misaligned intake gasket sucking a little oil! A hike in fuel pressure requires a float check as it can raise float levels to hold the new pressure and cause a slosh or up the flow by ease of flowing in! Un-balanced idle screws will unbalance jetting when lifting and leave more on one side or draw more air on the other! One round is close on ours! We have to clean the tiny vents often for this trouble and I only clean the filter to keep it a constant! Some are over lubed right out of the box and have done this! A slight gas wash at the track saved the day, well nights racing and the engine from leaning out from too much draw and left over fuel melting things like ends off of the plugs, head gaskets, blowing between cylinders with out getting over heated, pistons and rings, ceased valve guides! Cylinder temps and engine temps are different things! Pull the valve covers and test all you can if nothing is wrong with the carb! Look for a vacuum leak on the left making it correct! Good luck in finding it!!! If Idled too high it can feed more on one side! A small hole drilled on the upper shaft side near center of the shaft will get you back down off of the draw of the off idle position and idle correctly the rpms you want! 15-17 hundred recommended as not to stretch a rod, bolt, or piston top when lifting by dropping vacuum hikes! Should idle smoother too when adjusted! If idle screws run in on either side does not kill the engine, it is drawing fuel from some where it shouldn't be! Try this first! Both screwed in always kills one unless incorrect!
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