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Author Topic: Resurface Cylinder head  (Read 1046 times)

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EXD

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Resurface Cylinder head
« on: 06 September 2010, 21:02:29 »
Hello
I'm changing the gasket on the cylinder head.
I have access to a mill so i thought that I would resurface the cylinder head. However, the exhaust valves are really close to the "level" where I will mill! Is this normal??
I've read in the Manual that the height of the cylinder head should be 134mm. I will check this tomorrow...
The engine?...its a MV6 -95
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Marks DTM Calib

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Re: Resurface Cylinder head
« Reply #1 on: 06 September 2010, 21:04:32 »
Should be fine to skim a few 'thou' off.

But in reality the V6 heads dont warp so only do it to clean the face up.
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EXD

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Re: Resurface Cylinder head
« Reply #2 on: 06 September 2010, 21:07:37 »
Yeah, I will only "polish" it. To clean it.
« Last Edit: 06 September 2010, 21:10:26 by EXD »
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Marks DTM Calib

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Re: Resurface Cylinder head
« Reply #3 on: 06 September 2010, 21:10:16 »
Do check it but I seem to recall the exhaust valves sit around 1mm below the head face
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EXD

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Re: Resurface Cylinder head
« Reply #4 on: 06 September 2010, 21:11:44 »
OK, I will check. Thanks.
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Andy B

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Re: Resurface Cylinder head
« Reply #5 on: 06 September 2010, 21:30:24 »
Quote
Should be fine to skim a few 'thou' off.

  ......

Come on Mark. The poster's make of car suggests he's on the European  mainland where ...... like you  ::) they don't do Imperial inches.
for EXD 0.01mm=0.004" (ish)  :y  :y  :y
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Marks DTM Calib

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Re: Resurface Cylinder head
« Reply #6 on: 06 September 2010, 21:52:25 »
Quote
Quote
Should be fine to skim a few 'thou' off.

  ......

Come on Mark. The poster's make of car suggests he's on the European  mainland where ...... like you  ::) they don't do Imperial inches.
for EXD 0.01mm=0.004" (ish)  :y  :y  :y

Hence why I put 'thou'  :y with the  ' '
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Abiton

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Re: Resurface Cylinder head
« Reply #7 on: 06 September 2010, 22:02:14 »
1mm is about 40 thou, (0.04 inches)
0.1mm is about 4 thou, (0.004 inches)
0.01mm is about 0.4 thou (0.0004 inches)

You were a power of ten out back there Andy, unless I deceive myself greatly.;)
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Entwood

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Re: Resurface Cylinder head
« Reply #8 on: 06 September 2010, 22:12:10 »
Quote
1mm is about 40 thou, (0.04 inches)
0.1mm is about 4 thou, (0.004 inches)
0.01mm is about 0.4 thou (0.0004 inches)

You were a power of ten out back there Andy, unless I deceive myself greatly.;)


I'm afraid I have to agree with you ... Andy's calculator needs a recalibration methinks .. :)
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Andy B

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Re: Resurface Cylinder head
« Reply #9 on: 06 September 2010, 22:17:40 »
Quote
Quote
1mm is about 40 thou, (0.04 inches)
0.1mm is about 4 thou, (0.004 inches)
0.01mm is about 0.4 thou (0.0004 inches)

You were a power of ten out back there Andy, unless I deceive myself greatly.;)


I'm afraid I have to agree with you ... Andy's calculator needs a recalibration methinks .. :)

Just keeping you on your toes .... seeing if you were paying attention.  :y  :y  :y
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EXD

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Re: Resurface Cylinder head
« Reply #10 on: 07 September 2010, 21:10:59 »
The millings done!
I toke of 0,1mm. But the exhaustvalve is REALLY close now to the head face, I guess you shouldn't resurface the cylinder head too many times...
The height is 134mm now as it should be according to the manual.
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