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bored out head

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Old Feb 14, 2006 | 01:54 PM
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Default bored out head

do i need to bore out the intake manifold if i had the head bored out
Old Feb 14, 2006 | 02:28 PM
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Default Re: bored out head

is that something new ???? i've never heard of that or did you mean ported
Old Feb 14, 2006 | 02:37 PM
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Default Re: bored out head

You should port match as much as possible. There is no point in having a ported head if the ports on the intake mani are smaller than the ports on the head...
Old Feb 14, 2006 | 03:01 PM
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Default Re: bored out head

yeah i mean ported but thanks my car is running like shit and i was wondering was that the problem. i had someone build a minime for me and for some reason it is running bad
Old Feb 14, 2006 | 03:12 PM
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Default Re: bored out head

more than likely not the cause of your problem. I would say you have a timing issue. What is it doing?
Old Feb 14, 2006 | 03:16 PM
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Default Re: bored out head

slow in first gear then it gets going
Old Feb 14, 2006 | 03:17 PM
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Default Re: bored out head

running real rich
Old Feb 14, 2006 | 03:33 PM
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Default Re: bored out head

When you just let it idle does it have any problems? Does it idle low/high? Are you throwing any engine codes? A faulty IAT sensor may cause it to run rich.
Old Feb 14, 2006 | 03:58 PM
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Default Re: bored out head

it idles up and down right above 1000 rpms
Old Feb 14, 2006 | 06:46 PM
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Default Re: bored out head

Your head might be ported too much and you're having a problem with velocity at low flow rates. It's a common problem, especially if the ECU hasn't been tuned. The cylinders don't fill properly at low RPM if you have too much flow and not enough velocity.. Of course, if you're running the wrong ECU for your engine than it might idle like crap too.



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