head coming off again

Engines and Engine Systems
Andre Steyn
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Re: head coming off again

Post by Andre Steyn »

Jo michael, dis darem ñ huge verskil tussen die pryse waaroor ek vanoggend op my rug geval het, ek moet head boute, head gasket, intake en exhaust manifold gaskets(steel shim tipe). Alles behalwe die head boute het so by R3000 gedraai. Maar so leer mens, die ex. manifold gasket het 2 geblaas omdat hulle die non turbo s'n was.
Andre Steyn
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Re: head coming off again

Post by Andre Steyn »

Cedric, those dunes truly look like an amazing experience. Those 4.8 's are monsters just a pity bout the fuel consumption though.
Andre Steyn
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Current 4x4: 99 Nissan Patrol Y61 4.2 Turbo intercooled Station wagon or Nissan patrol 4.2tdi pick up and now wifey's 2007 4.8 grx added to the family
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Re: head coming off again

Post by Andre Steyn »

Part numbers: cylinder head: 1104405D02
:Exhaust mf: 1403654TOA
. :intake:1403506J01

A very interesting thing I noticed recently is that the UD 40 trucks newer model have the td42 moter, without a intercooler they call it the mo2 some parts are cheaper at ud. And 90% of the time they have stock. Slight differences on some exterior piping and components but very minor though.
Andre Steyn
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Re: head coming off again

Post by Andre Steyn »

Andre Steyn wrote:Part numbers: cylinder head: 1104405D02
:Exhaust mf: 1403654TOA
. :intake:1403506J01

A very interesting thing I noticed recently is that the UD 40 trucks newer model have the td42 moter, without a intercooler they call it the mo2 some parts are cheaper at ud. And 90% of the time they have stock. Slight differences on some exterior piping and components but very minor though.
Bedoel, cylinder head gasket.
Andre Steyn
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Re: head coming off again

Post by Andre Steyn »

So gents, heads off head luckily seems fine, head bolts and gasket definately not right. But thats minor all six cylinders show scorring on the sleeves! The honing marks arent en worked off!!!! I haven't been this negative in some time. Looks like new pistons rings and bearings! And either a good hone or worst case new sleeves! Any advise guys?
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Tinus lotz
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Re: head coming off again

Post by Tinus lotz »

andre did you measure it up????how about a pick or two????? :surprised:
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ricster
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Re: head coming off again

Post by ricster »

Andre, as far as I know the honing marks are the best to have on the sleeves. The honing marks are what hold the extremely thin layer of oil on the sleeves to allow the rings to glide smoothly up and down the bore. So that is a good sign in my opinion. If you have scoring then that is a little different. Can you take some good quality pics and post them here for us to look at?

Did you ensure that the open ends of the rings are opposite each other, in other words top ring split facing the intake side, and the second ring split facing the exhaust side, and again the oil ring facing thte intake side?

I'm happy for you that the head is still 100% !!! :thumbup: :thumbup: :thumbup:
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Cedric
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Andre Steyn
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Full Name: Steyn
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Current 4x4: 99 Nissan Patrol Y61 4.2 Turbo intercooled Station wagon or Nissan patrol 4.2tdi pick up and now wifey's 2007 4.8 grx added to the family
Home Language: Afrikaans
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Re: head coming off again

Post by Andre Steyn »

Do any of you know how to post pics with a nokia lumia 920? It doesn't even give me the option to browse the images. With scoring I mean deep marks on the sleeves like seize marks. Don't know why this has happened. I haven't even done 10k.
Andre Steyn
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Current 4x4: 99 Nissan Patrol Y61 4.2 Turbo intercooled Station wagon or Nissan patrol 4.2tdi pick up and now wifey's 2007 4.8 grx added to the family
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Re: head coming off again

Post by Andre Steyn »

The rings haven't even seated yet, all the honing marks are still clearly visible being proof that I haven't been driving the rebuilt motor long.
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Tinus lotz
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Re: head coming off again

Post by Tinus lotz »

Sounds serious. ....dont know how to do pics on your phone. ...mabe you need to measure up again? A good pic can help to let frans look at it ???? :think: :think:
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