2.5 diesel valve guide removal.

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lankytim
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Joined: 23 Mar 2013, 21:53

2.5 diesel valve guide removal.

Post by lankytim »

Big question, how do I get them out? I've removed the valves but have no idea on how to get the valve guides out. Any tips?
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qprdude
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Re: 2.5 diesel valve guide removal.

Post by qprdude »

No idea mate, but on 24 cylinder Wartsila ships engines, we used dry ice and a sliding hammer tool. (I supect that might be overkill for a 2.5 diesel) :wink:
Rick.

2013 Citroen DS 5 D/Sport
2007 Renault Clio Campus sport. 1.2l

Sometimes the change doesn't work.
addo
Sara Watson's Stalker
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Post by addo »

If they need renewal, why not leave this to the head shop?
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lankytim
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Re: 2.5 diesel valve guide removal.

Post by lankytim »

They need to come out so I can scrap the ally in the head. It's badly chewed a valve at some point and is totally scrap.
addo
Sara Watson's Stalker
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Post by addo »

I'd drill them, you might have success with a drift but it's not assured.
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CGATCX25GTITURBO
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Re: 2.5 diesel valve guide removal.

Post by CGATCX25GTITURBO »

put the head in an oven for a good while get it very hot and they will fall out with a good tap ;)
Neil aka CGAT
1986 CX25 GTI TURBO 1 SERIES 2 'CGAT'
1998 XANTIA 19TD ESTATE
1987 BX19 GTI 8V
2012 Citroen DS3
1997 600 Bandit
2000 ZX12R from new
1989 CX GTI Turbo 62k miles in a barn since 2001, project started 2023.
citronut
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Re: 2.5 diesel valve guide removal.

Post by citronut »

CGATCX25GTITURBO wrote:put the head in an oven for a good while get it very hot and they will fall out with a good tap ;)
the valve seats likewise,

although as you are scrapping the head you should be able to just drift the guides out cold,

how much do you think your going to get for the bare head anyway, ( is it worth the effort ?????)

my last workshop landlord does cylinder head work for a living, and to heat heads up he has an electric cooker hob he sits the head across the rings for a while,
till you can fry an egg on the head,
Regards, malcolm.

current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
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lankytim
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Re: 2.5 diesel valve guide removal.

Post by lankytim »

It's probably not worth doing really. I do save up scrap ally and weigh it all in when I have enough, it makes a nice bonus!
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qprdude
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Re: 2.5 diesel valve guide removal.

Post by qprdude »

If it's for your scrap bucket and you have the time, why not!
When I was in ship repair, we used to repair broken ships gangways and I always stashed the bits I cut off and saved them for a couple of months before the trip to the scrappy. A syou say, a nice little bonus. (I won't mention the white metal bearings, the brass and copper pipework or the stainless tanks) :-$
Rick.

2013 Citroen DS 5 D/Sport
2007 Renault Clio Campus sport. 1.2l

Sometimes the change doesn't work.