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  • May 22, 2022, 12:54:47 AM

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Author Topic: Cylinder Head Flatness Spec. Confusion  (Read 238 times)

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Offline djm3452004

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Cylinder Head Flatness Spec. Confusion
« on: April 18, 2022, 08:09:08 PM »
Hi All --

I'm having a bit of trouble interpreting the service manual's flatness specification for cylinder heads (6 cyl).  Can you all please take a look at the attached image and let me know your opinions?

0.001", 0.002" or somehow up to 0.006" or 0.008"?  It's a very curious way of explaining the allowable variation, unless they're talking about a side-to-side or end-to-end situation.

Thanks in advance!

David
Current Project: 1983 Eagle Wagon 258
Past AMC Project(s):  1979 Spirit Liftback 232
                                1968 Ambassador 287

Offline rmick

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Re: Cylinder Head Flatness Spec. Confusion
« Reply #1 on: April 18, 2022, 11:21:42 PM »
My manual 72 for 258 says .008 for full length of head .002 in 6 inch or .001 in 1 inch which is the same as what the 1980 manual says. Just printed differently. 0.001/1.0in .002/6in .008 fuel length
72 Javelin AMX
72 Javelin SST
72 Gremlin with 4.0
81 SX 4

Offline djm3452004

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  • Posts: 82
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Re: Cylinder Head Flatness Spec. Confusion
« Reply #2 on: April 19, 2022, 05:02:36 AM »
My manual 72 for 258 says .008 for full length of head .002 in 6 inch or .001 in 1 inch which is the same as what the 1980 manual says. Just printed differently. 0.001/1.0in .002/6in .008 fuel length



Thank you, that definitely clarifies!  Much-appreciated!

David
Current Project: 1983 Eagle Wagon 258
Past AMC Project(s):  1979 Spirit Liftback 232
                                1968 Ambassador 287

 

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