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| Exhaust manifold temperature 3.4 swap (Page 1/2) |
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go faster
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OCT 25, 05:06 PM
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Manifold is glowing. l'm using a temp gun and seeing 600 to700 plus degrees on truck side manifold at cylinders #1 and #3. #5 is showing about 300 ish Found a couple of vacuum leaks and adjusted the timing. Only can see manifold glowing at night. Would like to get exhaust temperature figure so i could check temps during day time. Exhaust manifold restrictions removed and have been ceramic coated. A Spintech muffler was added. Thanks [This message has been edited by go faster (edited 10-25-2020).]
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Patrick
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OCT 25, 06:12 PM
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| quote | Originally posted by go faster:
Manifold is glowing... 600 to700 plus degrees on truck side manifold at cylinders #1 and #3.
#2 is showing about 300 ish
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Quite a difference in temperatures from one side to the other. Are the front bank cylinders even firing? Check the injector fuses.[This message has been edited by Patrick (edited 10-25-2020).]
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go faster
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OCT 25, 06:51 PM
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The front side is glowing at #6 from what i can see. Will check to see if injectors are working.
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Patrick
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OCT 25, 08:01 PM
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| quote | Originally posted by go faster:
Found a couple of vacuum leaks and adjusted the timing.
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Perhaps double-check that the harmonic balancer hasn't slipped. If it has, then the ignition timing will be off. Make sure that actual TDC of #1 is 0° on the timing scale.
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go faster
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OCT 25, 08:15 PM
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Harmonic balancer is new. Will check timing thinking the timing is off and the motor is firing with the exhaust valve open.
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go faster
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OCT 25, 10:24 PM
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Found this under exhaust gas temperature. 
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sourmash
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OCT 26, 08:28 AM
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pmbrunelle
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OCT 26, 05:30 PM
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At night, both manifolds (well, what I can see of the front one) on my Fiero get a visible dark cherry glow after sustained highway driving. It runs like a top. After a few minutes of city driving or idling the manifolds stop glowing.
It would be bizarre if both your banks aren't working the same.[This message has been edited by pmbrunelle (edited 10-26-2020).]
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Raydar
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OCT 26, 08:15 PM
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Ed Parks, I believe, made the statement that, in a dark garage, it's quite normal to see a slight glow from the Fiero manifolds.
When I was breaking in my cam (fast idle) I lit those suckers up.
If it runs decently, I wouldn't sweat a little bit of a glow, as long as they're not bright orange or white. With that said, you would think they would be at sort-of similar temperatures, if everything is working properly.
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go faster
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OCT 28, 02:17 PM
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Looking at the field service manual It's stated to check for blockage at the injector. I found that my primary fuel line after the fuel filter was cracked and some type of putty was used to stop the leak. Maybe that is the cause of #5 cylinder being long in temperature.
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