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Home > Help Needed / General Tech Chat > Skim or not?


71 Posts
Member #: 11403
Advanced Member

Just wondering would you skim this head to remove these marks? You can slightly feel one with your nail.

Just its had quite a skim already so don't want to go too far... How can I tell how much more can be skimmed?



jonny f

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1797 Posts
Member #: 9894
Post Whore


got a decent photo?

can't see, they dont look that bad though.


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9161 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

I've put worse looking heads on without issue.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.

Joe C

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12059 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

looks ok,

lay the gasket on it and see iof there are any deep marks that go over the fire rings

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?


71 Posts
Member #: 11403
Advanced Member

Thanks, also just wondering to have a head skimmed does it need fully stripped as well eg the thermostat and heater tap studs removed or can they stay in?

Rod S

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5780 Posts
Member #: 2024
Formally Retired

Rural Suffolk

Ask your chosen machine shop.

If they clamp it down the traditional way it can have the studs left in as they can use spacer blocks (specially machined ones of equal heights) but they might charge a bit more as it will take a bit longer.

But if they have a magnetic bed (which I've used in the past where I used to work) then no, the "top" of the head needs to be flat for the magnetic clamp to hold it.

EDIT - personally I would take those particular studs out anyway just to clean them up and inspect them, they have a habit of getting corroded right next to the head face if/when the gaskets weep slightly.

Edited by Rod S on 19th May, 2017.

Schrödinger's cat - so which one am I ???

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