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Old Oct 8, 2006 | 11:05 AM
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Default Block fill
what is the deal with block fill?
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Old Oct 8, 2006 | 02:20 PM
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you fill up till the freeze plugs and then have the block machind, not the other way around

The block rock supports the cyl. bores, allows you to grind on the lower block rail to clearance without breaking into the water jacked. There are more benefits like the ability to run the water and oil temp much more seperate from each other.
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Old Oct 8, 2006 | 03:51 PM
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Is there are any problems with engine cooling if filling the block up to the freeze plugs on a street driven car?
Last edited by gbak; Oct 8, 2006 at 04:04 PM.
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Old Oct 8, 2006 | 03:58 PM
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That is a point of contention, from google is telling me. I am going to give it a try.
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Old Oct 8, 2006 | 04:05 PM
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You will gain some hp if the oil will be warmer, don't know if it's worth it on a street driven car.
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Old Oct 8, 2006 | 04:56 PM
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No, no cooling problems if you fill up to the freezes plugs. The bulk of the heat is transferred in the head and the upper most part of the cyl. wall.
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Old Oct 8, 2006 | 06:58 PM
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Hmm...I'm wondering if this might not be a good idea for my .060 over 400 block...
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Old Oct 8, 2006 | 07:28 PM
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Probably. That has been the most common app I have found on the internet.
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Old Oct 8, 2006 | 08:06 PM
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Originally Posted by Twin_Turbo
you fill up till the freeze plugs and then have the block machind, not the other way around

The block rock supports the cyl. bores, allows you to grind on the lower block rail to clearance without breaking into the water jacked. There are more benefits like the ability to run the water and oil temp much more seperate from each other.
What happens if you do it to a block that's already been machined?
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Old Oct 8, 2006 | 09:27 PM
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I would think that you'd at least have to have the bores checked for roundness & rehoned.
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Old Oct 8, 2006 | 10:10 PM
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Originally Posted by ratflinger
I would think that you'd at least have to have the bores checked for roundness & rehoned.
That's pretty much a given, anyway. It needs a line bore.
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