Re: Deck Thickness, How Thin is Too Thin?
[Re: 73DAD]
#2856496
12/07/20 12:14 PM
12/07/20 12:14 PM
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Joined: Jan 2003
Posts: 10,665 North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,665
North Dakota
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This may be of help. Decking Thread
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Deck Thickness, How Thin is Too Thin?
[Re: 73DAD]
#2856518
12/07/20 12:59 PM
12/07/20 12:59 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,055
Michigan
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How thin of a deck would you consider as a 'no go'?
My beater '66 hemi block is already .080" shorter than nominal, it needs further milling from some gouges in the deck. Some gorilla tried to pull out the 1/4" dowels with vicegrips & scarred it up. I haven't had the deck sonic'd yet, was just looking for some reference.
Street use, standard head bolts/stud, stock iron heads. Back in the day a lot of guys cut the deck .100” without any problems after. That’s running in Super Stock at 12.5 - 1. Plain old steel gasket too.
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Re: Deck Thickness, How Thin is Too Thin?
[Re: hemienvy]
#2856608
12/07/20 03:22 PM
12/07/20 03:22 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
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Michigan
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How does the spacer plate work ?
Is it: Block - steel shim - spacer plate - steel shim - Head ? That’s the way we have done it.
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Re: Deck Thickness, How Thin is Too Thin?
[Re: 73DAD]
#2856611
12/07/20 03:23 PM
12/07/20 03:23 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,055
Michigan
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How thin of a deck would you consider as a 'no go'?
My beater '66 hemi block is already .080" shorter than nominal, it needs further milling from some gouges in the deck. Some gorilla tried to pull out the 1/4" dowels with vicegrips & scarred it up. I haven't had the deck sonic'd yet, was just looking for some reference.
Street use, standard head bolts/stud, stock iron heads. If the marks are not in the load cell/bead area of the gasket then as mentioned, just lightly file to get any high spots out and be done with it.
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Re: Deck Thickness, How Thin is Too Thin?
[Re: A727Tflite]
#2856648
12/07/20 04:13 PM
12/07/20 04:13 PM
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Joined: Jun 2015
Posts: 310 Northeast Indiana
73DAD
OP
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enthusiast
Joined: Jun 2015
Posts: 310
Northeast Indiana
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How thin of a deck would you consider as a 'no go'?
My beater '66 hemi block is already .080" shorter than nominal, it needs further milling from some gouges in the deck. Some gorilla tried to pull out the 1/4" dowels with vicegrips & scarred it up. I haven't had the deck sonic'd yet, was just looking for some reference.
Street use, standard head bolts/stud, stock iron heads. If the marks are not in the load cell/bead area of the gasket then as mentioned, just lightly file to get any high spots out and be done with it. I wish the marks were just cosmetic, but they managed to gouge all the way around and over the edge of the nearest cylinder wall, deep. Otherwise I probably would have just run it. Its bad enough I'll have to ridge ream or round file the cylinder lip in that spot.
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Re: Deck Thickness, How Thin is Too Thin?
[Re: hemienvy]
#2856730
12/07/20 07:19 PM
12/07/20 07:19 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,055
Michigan
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Thanks Transman, I have been thinking about this.
What kind of compression or boost were you running with the spacer plate ? Had numerous old Super Stock motors that came in that had the old TRW/DirectConnection 12.5 - 1 pistons that guys wanted to run on the street without anything but a smaller cam. Took the rollers out, rebuilt the motors and added the shim with gaskets. Didn’t have any problems from any of them. You would have to use a compression calculator to figure out what actual ratio they ran at. We did use the shim on a motor that was whacked way too much but was used in MP at 12.5 to 1 with no issues either.
Last edited by Transman; 12/07/20 07:21 PM.
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