Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Webby the Bear on 11 September 2013, 14:59:34

Title: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 11 September 2013, 14:59:34

(http://i1226.photobucket.com/albums/ee402/webbybear1/cleanedhead_zps967f0cee.jpg) (http://s1226.photobucket.com/user/webbybear1/media/cleanedhead_zps967f0cee.jpg.html)

Not the greatest of photos I know but I have taken fine emery cloth and gone over it to get it smooth and then wiped it over with brake clean. is this what it should look like or should I be seeing my face in it? I didn't want to go too mad as I don't want to start making high and low points. And I don't really have the means to machine it.

Your thoughts?

Ta.  :y

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 11 September 2013, 15:07:44

ps I haven't touched the valves or combustion chamber area.... im presuming I can leave this alone?  :y

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Marks DTM Calib on 11 September 2013, 15:57:07

Sorry, didn't get chance to reply to your PM.

Get a block of wood and get some wet and dry wrapped around it and work the cylinder head with it a bit further to minimise the pitting around the coolant passages (signs of poor coolant maitenance there in a dim and distant past). You can actualy apply a small wipe of the green sealent (as used on the front cam caps) in this corrosion area before fitting the head to help seal it.

The wooden block trick also works well on the block faces and the oil cooler face (worth re-sealing whilst the heads are off)

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: henryd on 11 September 2013, 16:32:31

The main things is where the fire rings on the gasket sit,any pitting there isn't good but as Mark says use a bit of sealant where the cooling passages are :y

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 11 September 2013, 16:36:12

Thanks guys - I don't mind giving it a bit more elbow grease now especially with the block of wood trick. ive only got medium and fine emery. so ill use the medium and finish off with the fine, both using a block.

got to the other head and i'm  a little concerned. heres the pic and thers two pitted areas (arrowed).
(http://i1226.photobucket.com/albums/ee402/webbybear1/chg1_zps43cde16e.jpg) (http://s1226.photobucket.com/user/webbybear1/media/chg1_zps43cde16e.jpg.html)

I only have the black sealant.will this be acceptable?  :-\

cheers chaps  :y :y :y

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Marks DTM Calib on 11 September 2013, 16:59:06

No, you need the green sealant (which you will need anyway for the cam caps), the area shown is part of the coolant way so not an issue (look at the opposite surface on the block face)

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 11 September 2013, 17:09:10

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Quote from: Fuse18 on 11 September 2013, 16:59:06

No, you need the green sealant (which you will need anyway for the cam caps), the area shown is part of the coolant way so not an issue (look at the opposite surface on the block face)

Awesome. Cheers mate  :y

one final thing... the crusty white crap in the coolant passages..... emery on this too?

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Marks DTM Calib on 11 September 2013, 20:18:49

What ever gets rid in reality

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 12 September 2013, 16:34:24

right lads, this is the final clean up. I haven't got green sealant yet but I will as need it anyway as mark pointed out. just the block next.
(http://i1226.photobucket.com/albums/ee402/webbybear1/heads_zps74f15c0a.jpg) (http://s1226.photobucket.com/user/webbybear1/media/heads_zps74f15c0a.jpg.html)

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Marks DTM Calib on 12 September 2013, 16:49:54

Looking much better, the block of wood and wet and dry works well and makes life a lot easier when cleaning such things up.

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 12 September 2013, 16:58:38

Thanks Mark, it worked a treat. Medium emery then fine  :y

Got a straight edge and feelers from college too so going to run that over as well.

Still a little concerned re the head on the left in that pic. The bottom most cylinder's water jacket has what you can just make out in the photo a little bit of corrosion but it's as if its been slightly eaten away. is this another place to put the green sealant? Sorry for getting confused on this but obviously just wan to make sure I don't nausea it up  :y :y :y

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: cem_devecioglu on 12 September 2013, 21:33:21

Webby when you want to take a picture, take a breath, give back half,fix your arms & hands , press the button halfway ,
then gently make the shot.. :y

ps: if you are still unable to take a clear picture have a medical check

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: dbug on 12 September 2013, 22:07:19

Quote from: cem on 12 September 2013, 21:33:21

Webby when you want to take a picture, take a breath, give back half,fix your arms & hands , press the button halfway ,
then gently make the shot.. :y

ps: if you are still unable to take a clear picture have a medical check

Thought it was my eyes - got an appointment at Specsavers ::) ;)  I'l cancel now  :)

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Webby the Bear on 13 September 2013, 07:44:08

 ;D ;D ;D ;D ;D yeah sorry lads bit fuzzy I know  ::) ;D

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: Marks DTM Calib on 13 September 2013, 08:13:05

Yep, pop a wipe of green snot around it

Title: Re: Cleaned head mating surface.. is this good enough?
Post by: symes on 13 September 2013, 22:33:37

Quote from: Fuse18 on 13 September 2013, 08:13:05

Yep, pop a wipe of green snot around it

ooh that sounds so so wrong -fell of my chair ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D