Bbc # 7 Cyl Loss
04-29-2002, 01:53 PM
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I haven't lost #7, but it is a common cyl to get pounded especially if special attention isn't given to #5 and #7 plug wire spacing. They fire so closely in the firing order if 5 jumps to 7 it will result in severly overl advanced combustion in #7 and bad things will happen.
04-29-2002, 05:20 PM
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Which time? The one that goes most for me is #7, then 5. Except for last year I had # 2 & #6 detonate apart. Wish I knew why? Never had a problem with the even side before in all my years. The problem with #7 is it fires right after #5 in firing order & has not had time to disapate heat so it detonates.
(OK I fixed my post, this is what I get for trying to work while I read/post on OSO)
(OK I fixed my post, this is what I get for trying to work while I read/post on OSO)
Last edited by Turbojack; 04-29-2002 at 05:53 PM.
04-29-2002, 05:38 PM
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I think turbo jack means because 7 fires after 5. I wasn't aware of this problem, but it makes sense and I will check it out. I've heard ole number 7 having rod bearing problems due to not warming engine thoroughly before getting on it though.
Anyone know of anything like this that could make #2 have a carbon buildup problem?
BT
Anyone know of anything like this that could make #2 have a carbon buildup problem?
BT
04-29-2002, 05:58 PM
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I do not see why 7 would have rod problems except for being caused by detonation. Of all the pistons I have gone thru over all of the years I have never had a rod/bearing problems.
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