Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: EXD on 06 September 2010, 21:02:29

Title: Resurface Cylinder head
Post by: EXD 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

Title: Re: Resurface Cylinder head
Post by: Marks DTM Calib 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.

Title: Re: Resurface Cylinder head
Post by: EXD on 06 September 2010, 21:07:37

Yeah, I will only "polish" it. To clean it.

Title: Re: Resurface Cylinder head
Post by: Marks DTM Calib 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

Title: Re: Resurface Cylinder head
Post by: EXD on 06 September 2010, 21:11:44

OK, I will check. Thanks.

Title: Re: Resurface Cylinder head
Post by: Andy B 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

Title: Re: Resurface Cylinder head
Post by: Marks DTM Calib 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  ' '

Title: Re: Resurface Cylinder head
Post by: Abiton 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.;)

Title: Re: Resurface Cylinder head
Post by: Entwood 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 .. :)

Title: Re: Resurface Cylinder head
Post by: Andy B 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

Title: Re: Resurface Cylinder head
Post by: EXD 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.