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Old 05-05-2012, 03:59 PM   #1
Blue Maro Demon

 
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How the ZL1 engine block is honed!


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Pretty cool vid.



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Old 05-05-2012, 04:36 PM   #2
Lonny Doyle
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This video is actually explaining how the ZL1 engine block is honed using deck plates to simulate cylinder heads being torqued on the block.

When you torque the cylinder heads and main caps onto the engine block it causes the cylinders to distort, so if you were to hone the block without deck plates and the main caps installed the cylinders would measure round and straight until you assembled the engine.

Once you installed the heads and main caps the cylinders would no longer be round and straight. So to prevent this from happening they simulate the engine as if it were assembled while they hone it by using deck plates.

Another thing we do while honing is to pump hot honing oil through the cooling jackets to simulate running conditions while honing. We bring the whole block up to around 180 degrees during honing.
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Old 05-05-2012, 08:09 PM   #3
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Cool video and good info.
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Old 05-05-2012, 08:52 PM   #4
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cool vid
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Old 05-05-2012, 08:58 PM   #5
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....outstanding, these motors should be close to most of the blueprint specs because of the dilligence Chevy has ensured thoughout the manufacturing process, way to go Chevy.....! Chevy engineering and manufacturing is cutting edge....
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Old 05-05-2012, 09:01 PM   #6
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sounds like NASCAR tech
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Old 05-05-2012, 09:43 PM   #7
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Quote:
Originally Posted by Lonny Doyle View Post
This video is actually explaining how the ZL1 engine block is honed using deck plates to simulate cylinder heads being torqued on the block.

When you torque the cylinder heads and main caps onto the engine block it causes the cylinders to distort, so if you were to hone the block without deck plates and the main caps installed the cylinders would measure round and straight until you assembled the engine.

Once you installed the heads and main caps the cylinders would no longer be round and straight. So to prevent this from happening they simulate the engine as if it were assembled while they hone it by using deck plates.

Another thing we do while honing is to pump hot honing oil through the cooling jackets to simulate running conditions while honing. We bring the
whole block up to around 180 degrees during honing.

Very interesting. Thanks
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Old 05-05-2012, 10:24 PM   #8
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DAMN.... we own MONSTERS!! FRIGGIN AWESOME!!
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Old 05-08-2012, 12:25 PM   #9
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Talk about perfection...

This is awesome!
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Old 05-08-2012, 01:00 PM   #10
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Lonnie is correct. We hone no motors w/out a deck plate...only way to ensure the bore is square.
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Old 05-08-2012, 01:08 PM   #11
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this is news?
didnt know it was done any other way,
unless the build is in a garage.
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Old 05-08-2012, 01:21 PM   #12
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Quote:
Originally Posted by hot ss View Post
this is news?
didnt know it was done any other way,
unless the build is in a garage.
I stroked and bored mine using a dremmel tool and a thousand attachments.

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Old 05-08-2012, 01:22 PM   #13
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This makes me wanna go work on motors again...good stuff.
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Old 05-08-2012, 01:40 PM   #14
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Quote:
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I stroked and bored mine using a dremmel tool and a thousand attachments.

something tells me that you and chris would be the only two people that would do this..

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Old 05-08-2012, 01:43 PM   #15
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Sounds like this honing process video is not just ZL1 related. Maybe not even only LS related?


Quote:
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something tells me that you and chris would be the only two people that would do this..

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Old 05-08-2012, 02:53 PM   #16
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From what I remember, most production blocks and assembly line rebuilders do not bore and hone with deckplates. When I had my engines rebuilt, you had to check this off and pay extra for it.
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Old 05-08-2012, 10:30 PM   #17
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Quote:
Originally Posted by hot ss View Post
this is news?
didnt know it was done any other way,
unless the build is in a garage.
Guess you're just too cool for this thread...

Good Stuff...
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Old 05-09-2012, 12:54 AM   #18
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Cool info.
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Old 05-09-2012, 01:15 AM   #19
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Old 05-09-2012, 02:22 AM   #20
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just learned about this in my last course way to go GM!!!
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Old 05-09-2012, 07:00 AM   #21
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Thank you for posting this.
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Old 05-09-2012, 12:27 PM   #22
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In the mid 70's I had a 383 LT-1 built using "stress plates" as they were called then, on the cylinder honing. That engine had almost no leakdown (as I recall around 2% or less). It does make a difference.
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Old 05-09-2012, 01:03 PM   #23
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Very cool video! I was imaging the guy in the back just going..."Mmm ...ohhhhh yeahhh.." lol
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Old 05-09-2012, 01:21 PM   #24
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I do not know of a single engine built these days that is not honed in this manner. Deck plating is common practice in all factory and aftermarket engine build and has been for years.
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Old 05-09-2012, 09:57 PM   #25
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Is this done to all production engines, by hand? Wow! Is this only for the new ZL1 or did my 2011 L99 go through the same process?
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