ATTN ENGINE GURUs WTF CAN CAUSE THIS!?!?
10-14-2008, 09:06 PM
#21
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the #5 wall looked great, minus some flash rust from sitting for 2+ months with water in the chamber :oops: other than that we dont know. Tomorrow were tearing it down to bare block and are going to have a better look/sent out for a better check if we see nothing
10-14-2008, 09:23 PM
#23
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not yet, i only had about 10 minutes to spare today to go look, tomorrow imma spend all day there chekcing every possible thing for cracks holes and everything.... and if we find nothing the block is getting shipped out next week to an engine builder for completel inspection and the go ahead for a new motor or a rebuild *fingers crossed for tsp 427*
10-15-2008, 02:40 AM
#26
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It is an intake issue. Cure is to run a bit richer and if shooting Nitrous to either be rich or direct port. Some poeple (including myself) put a higher flowing injector there as well. I haven't had an issue since.
It is a very common issue, much less apparent in stock form since the tune is pig rich. Once you fine tune for cams etc.. it surfaces more frequently.
It is a very common issue, much less apparent in stock form since the tune is pig rich. Once you fine tune for cams etc.. it surfaces more frequently.
10-15-2008, 09:18 AM
#27
I knew you'd post back.then explain why the same 2 cylinders are the leanest when the intake is put on backwards?IE that would make them the 1st cylinders near the TB which would receive the least air flow?People have the same problem when a Fast is put on the car or a carb style intake which is supposed to "distribute airflow evenly"
10-15-2008, 09:25 AM
#28
I knew you'd post back.then explain why the same 2 cylinders are the leanest when the intake is put on backwards?IE that would make them the 1st cylinders near the TB which would receive the least air flow?People have the same problem when a Fast is put on the car or a carb style intake which is supposed to "distribute airflow evenly"
10-15-2008, 10:30 AM
#29
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I knew you'd post back.then explain why the same 2 cylinders are the leanest when the intake is put on backwards?IE that would make them the 1st cylinders near the TB which would receive the least air flow?People have the same problem when a Fast is put on the car or a carb style intake which is supposed to "distribute airflow evenly"
As for that test, I am curious as to how they measured AFR in 2 cylinders only.
You could measure left/right banks but just 2 cylinders they had to have widebands or other sensors in every header primary.
Do you have a link to that test? I'm curious to read it.
10-16-2008, 01:54 AM
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we tore the block down today and couldnt see anything at all... were sounding it out next week to an engine machinist to see and then its full out from there to see what kinda build im going to have to tackle
10-16-2008, 03:24 AM
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Re: Attention Engine Gurus WTF can cause this? When they pulled the plugs cylinder 5 was full of water and i started it right after it happened and it just shot white smoke forever so it was classic head gasket symptoms, until we opened it up.
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