Thread: Over Bore ?
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02-11-2008 11:43 PM #1
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Over Bore ?
This is a good photo that always make's me think about the engines that are bored more then .060 . I do know some of the old blocks can go more .
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02-12-2008 04:41 AM #2
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I know of many Hemi's that have been bored .125 (1/8") it depends on the motor.
But I also have seen motors that were junked because of being bored to much, or need the water jacket to be filled.
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02-12-2008 09:47 AM #3
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Thats why you use a sonic checker and have the bores offset bored to increase over bore ability .....
Its gunna take longer than u thought and its gunna cost more too(plan ahead!)
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02-12-2008 10:50 AM #4
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Smokey Yunick said you need 0.130" of cylinder wall after boring/honing.Last edited by techinspector1; 02-12-2008 at 03:15 PM.
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02-12-2008 02:51 PM #5
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yep.....
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02-12-2008 03:18 PM #6
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Is that with the block filled???Friends dont let friends drive fords!
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02-12-2008 04:47 PM #7
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I have heard of guys going .085 on the non thrust walls in the thin spots in a few bores and using a half fill with decent sucess..... now how much flex and loss of hp ...who knows ,probably some for sure.Its gunna take longer than u thought and its gunna cost more too(plan ahead!)
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02-12-2008 07:50 PM #8
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This is why the 400 sbc makes me nervous.
Originally Posted by tango
This is a good photo that always make's me think about the engines that are bored more then .060 . I do know some of the old blocks can go more .
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02-12-2008 07:54 PM #9
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so what your saying is the slant 6 is not going to happen Originally Posted by erik erikson
This is why the 400 sbc makes me nervous.
and i still have them nice bbc 4.500 bore dish piston for it
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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02-12-2008 07:54 PM #10
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I am all for punching out them old 283s . If they are a thick wall block and not all rusted inside .
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02-12-2008 07:58 PM #11
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Only If we "lay" a 3/4 bead of weld around the out side of it. Originally Posted by pat mccarthy
so what your saying is the slant 6 is not going to happen and i still have them nice bbc 4.500 bore dish piston for it
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02-12-2008 08:02 PM #12
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a full top off of Q set and 1nch thick 3 wide plate to band around the block hold the side of the block from movingIrish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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02-12-2008 08:12 PM #13
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I think that will hold her. Originally Posted by pat mccarthy
But what if we decide to shove 30 psi of boost at her?/?
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02-12-2008 08:32 PM #14
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Old Boy Your on a Roll tonight Originally Posted by DennyW
In that case, just build a wood crate for the block. Mix up at least a 5 bag mix, and set the block in the cement. When dry, just bust the crate off, and you now have a grenade Chevy block ready for 30 pounds of boost, which it will need to get the car moving, Mr. 30 lb boost.
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02-12-2008 08:34 PM #15
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do a way with the head gaskets O ring the deck and glue the head down and a full one pice main cap/ girdleIrish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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