XUD engine cylinder head commonality?

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Post Reply
gethinisaac
Posts: 3
Joined: 06 Nov 2012, 17:28
Location:
My Cars:

XUD engine cylinder head commonality?

Post by gethinisaac »

Hello

My father in law has a c15 romahome camper with a 1.7d engine which requires a replacement head. This is proving difficult to source and we were wondering whether there is commonallity with the 1.9d head? As these are much more commonly available. Option 2 is a complete 1.9d transplant.
Cheers Gethin
citroenxm
Posts: 8061
Joined: 30 Dec 2004, 23:10
Location: Somewhere in North Wales, Anglesey
My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto

2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Re: XUD engine cylinder head commonality?

Post by citroenxm »

The LATER 1.9d heads with the upper plastic Rocker cover fitted from around W X or Y reg wont DO.. Known as the DW8, even though they are still a Roatry Pump injection system and a 3 bearing Cam shaft machined directly into the head the oilways are slightly different between head and XUD block.

I beleve a TD head will do the same job, as they were idendical to the Non Turbo heads, prehaps slightly better material to cope with the turbo boost pressure and a better head gasket.

The 1.9d N/a heads will be perfect for the job, they used the same valves etc, so you should have no problems.. N/a engines from 406's, EARLY 406's, 205's, 309's (if you can find one) and EARLY 306's and ZX's, should all do the job nicely.
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
User avatar
CitroJim
A very naughty boy
Posts: 49531
Joined: 30 Apr 2005, 23:33
Location: Paggers
My Cars: Bluebell the AX, Polly the C3 Picasso, Pix the Nissan Pixo, Propel the duathlon bike, TCR Pro the road bike and Fuji the TT bike...
x 6160
Contact:

Re: XUD engine cylinder head commonality?

Post by CitroJim »

Paul, I'd tend to agree, XUD heads are pretty much interchangeable but TD heads do have better valve material I believe.

One thing is that a turbo camshaft will not be happy in an NA engine so if you do swap for a turbo head swap the cam over too. The turbo cams are a good bit 'tamer'....

When swapping cams do check the valve clearances carefully and re-shim if necessary...
Jim

Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
citronut
Posts: 10937
Joined: 29 Apr 2005, 00:46
Location: United Kingdom east sussex
My Cars:
x 92

Re: XUD engine cylinder head commonality?

Post by citronut »

the N/A and TD have diferent shaped inlet ports,
cant remember which way but one way the manifold does not cover the inlet ports of the head fully,

the engine will still run more or less ok but will always sound a bit like its got no air filter on,

if you send me your chassis/VIN No. i will check all families on service citroen,
this will show all citroen models with the same head,

the other thing to try is give these people a call as they are cit/pug dismantlers

http://www.pcr767676.co.uk/" onclick="window.open(this.href);return false;
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
citroenxm
Posts: 8061
Joined: 30 Dec 2004, 23:10
Location: Somewhere in North Wales, Anglesey
My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto

2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Re: XUD engine cylinder head commonality?

Post by citroenxm »

I think Malcolm you will find that Early xud N/a heads have the square ports by early i mean the 1983 to around 1991 heads are square then all later heads are oval .. that certainly how the bx n/a was originally 65 bhp then by 1992 the bhp was upped again to 71bhp.. i believe this to be oval port head on later n/a engines.. and so no issues with inlet.. these heads are identified by the inlet intake location from the air filter in the middle and not on the side as early early ones were...
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
citroenxm
Posts: 8061
Joined: 30 Dec 2004, 23:10
Location: Somewhere in North Wales, Anglesey
My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto

2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Re: XUD engine cylinder head commonality?

Post by citroenxm »

CitroJim wrote:Paul, I'd tend to agree, XUD heads are pretty much interchangeable but TD heads do have better valve material I believe.

One thing is that a turbo camshaft will not be happy in an NA engine so if you do swap for a turbo head swap the cam over too. The turbo cams are a good bit 'tamer'....

When swapping cams do check the valve clearances carefully and re-shim if necessary...

wouldn't fitting a head with better valves be beneficially better then a lower spec?? i would..
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
User avatar
CitroJim
A very naughty boy
Posts: 49531
Joined: 30 Apr 2005, 23:33
Location: Paggers
My Cars: Bluebell the AX, Polly the C3 Picasso, Pix the Nissan Pixo, Propel the duathlon bike, TCR Pro the road bike and Fuji the TT bike...
x 6160
Contact:

Re: XUD engine cylinder head commonality?

Post by CitroJim »

citroenxm wrote: wouldn't fitting a head with better valves be beneficially better then a lower spec?? i would..
Indeed to goodness yes :-D
Jim

Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
gethinisaac
Posts: 3
Joined: 06 Nov 2012, 17:28
Location:
My Cars:

Re: XUD engine cylinder head commonality?

Post by gethinisaac »

Thankyou all very much. If i understand correctly the early n/a or turbo 1.9d head will fit our 1.7d engine it being in a J reg vehicle?

Malcolm Thanks i will get the chassis number asap and post here.... Thankyou very much
citroenxm
Posts: 8061
Joined: 30 Dec 2004, 23:10
Location: Somewhere in North Wales, Anglesey
My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto

2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Re: XUD engine cylinder head commonality?

Post by citroenxm »

THIS would of been the dogs dangles for your Visa and would of fitted complete, and given you the perfect slight power increase....

Have you bought it, or lost out on it?
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
gethinisaac
Posts: 3
Joined: 06 Nov 2012, 17:28
Location:
My Cars:

Re: XUD engine cylinder head commonality?

Post by gethinisaac »

Didn't buy it. Father in law wants to get a new head now as it is the easier option than engine transplant.
citronut
Posts: 10937
Joined: 29 Apr 2005, 00:46
Location: United Kingdom east sussex
My Cars:
x 92

Re: XUD engine cylinder head commonality?

Post by citronut »

GSF do new heads complete with valves and cam for around £500 quid ready to bolt on
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
Post Reply