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how much if any should I shave the head ?

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#1
svochuck

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Hello all
We are building a 99 engine for fun mid pack use .  What head height should i ask for from the machine shop ?
Engine was overheated so a small shave might be needed.
yes , i did read all 30 something pages 
 
Thanks !
Chuck Taylor
NASA RM 
 
 
 
12.1.9. Cylinder Head: The gasket face of the cylinder head may be resurfaced provided the 
maximum compression ratio is not exceeded and the minimum height of the cylinder 
heads are maintained. The minimum heights of the cylinder heads as measured in the 
factory service manual allowed are shown in the following table.
Model Years Minimum Height 
(inches)
90-93 (1.6L) 5.245
94-05 (1.8L) 5.245


#2
Mike Collins

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5.268 is the FSM minimum.  Unless you are going to build something all out, this should be fine.


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#3
Jim Drago

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Chuck
If the head had much distortion in it from overheating, it is likely not any good. The 99 heads dont hold up well to over heating. You can shave the deck surface flat, but the cam journals will never spin freely. We have straightened a few, but not worth the effort and nothing I would want to use personally. Check that before going too far
 
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#4
Steve Scheifler

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And the valves may no longer seat either, so check that as well.
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#5
svochuck

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Thanks for the info ! 

what is FSM ....  5.268 is the FSM minimum.

 

Jim, I understand and will have the machine shop check . Valve job is on order.



#6
Steve Scheifler

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#7
Ron Alan

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What Jim said...BOTH sides warp. When the head is disassembled, lay a cam back in its position and push down on either side...odds are it will rock over the center. 


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#8
svochuck

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Great information.  Head is at the shop ! 






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