Head Bolts - Length ??

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gjb02
Posts: 287
Joined: 20 Jul 2002, 20:37
Location: United Kingdom
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Head Bolts - Length ??

Post by gjb02 »

Just managed to get my cylinder head off. Question is what length should the head bolts be?? The car is a ZX 16V, 1993, XU10J4 Series engine. The old ones are over an inch shorter than the ones Pa**co supplied me with. Were the old ones wrong?? A total length in mm please wouldbe great.
The new bolts are Unipart Part No. GKC 732 HB.
Thanks in advance!![:)]
Jon

Post by Jon »

Hi Gareth.
Tricky one. I'd normally get this sort of information from Elring or Meillor but neither company seem to list headbolt info for the XU10J4 engine. (Citroen 0204A0)Worth bearing in mind that this bolt must be used in conjunction with a washer 020547 or its too long!!
However the ever helpful BGA Automotive from Swindon list their part number BK6328 for this application sized M12 x 1.5 x 110.
Using this information I found that this matched GSF N01179 (which is actually listed for the XU10J4R engine 7/95>>).
From BGA catalogue:
<font color="blue">BK6328 is suitable for the following applications

Citroen XANTIA XU10J4 CC 1998 86 93-95 HEAD BOLT KIT

Citroen XANTIA XU10J4R(RFV) CC 1998 86 95-01 HEAD BOLT KIT

Citroen XANTIA XU10J4R(RFV) CC 1998 86 95-01 HEAD BOLT KIT

Citroen XM XU10J4R(RFV) CC 1998 86 93-00 HEAD BOLT KIT

Citroen XSARA XU10J4RS CC 1998 86 97-> HEAD BOLT KIT

Citroen ZX XU10J4 CC 1998 86 92-97 HEAD BOLT KIT

Citroen ZX XU10J4RS CC 1998 86 96-> HEAD BOLT KIT</font id="blue">
gjb02
Posts: 287
Joined: 20 Jul 2002, 20:37
Location: United Kingdom
My Cars:

Post by gjb02 »

Does that mean that GSF do the Head bolts for this car?? The very helpful gents in the store couldn't find anything for the head change at all, hence the Pa**co purchase. And the only way you have linked the correct bolts is by cross referencing another catalogue!
But, regardless of that, thankyou. I shall return the incorrect ones and see if my local GSF can get some of the correct ones in.
Jon

Post by Jon »

The GSF part number that I quoted is listed for the XU10J4R engine 7/95>> but we know that the engine in a UK market ZX 16v is the XU10J4, 1998cc in both instances.
Both engines have the same capacity at 1998cc, but one knocks out 155bhp where as the later one is 135BHP; I am told in the interest of emissions. What it boils down to is the type of cylinder head. What it amounts to in practical terms is that the earlier engine has a 134 tooth timing belt where as the later one has a 136 tooth timing belt.
Right, enough history.
Okay, as I mentioned GSF list headbolts for the later (XU10J4R) engine 7/95>>. Thats why the Branch said that they could not help. When I checked with BGA, an aftermarket supplier specialising in just gaskets, heads and headbolts, they tell me that all versions of the XU10 16v engines use the same headbolts. As they are a trusted supplier (and indeed, their Sales Manager Nick Murray is both ex-Andyspares and a friend of mine)I see no reason to doubt their information that all XU10J4 engines use the same headbolts.
But, to do a complete job I checked with Citroen who tell me that the Xu10J4 uses a 204AO bolt with the 020547 spacer washer, as does the XU10J4R 135 engine. BUT!!! The Xu10J4R bolt is actually a 020472 part number which supercedes to the 0204A0...
"[LISTE] PR REMPLACEE CONDITIONS OU PROPOSITIONS DE REMPLACEMENT

[00 04] 0204 72 0204 A0 à condition de supprimer la rondelle 0205 47"
what this is saying that provided that washer 020547 is used, then they interchange.
In a nutshell:
1) Buy 10 washers for your existing bolts if they're too long
2) If not purchase N01179 bolt set, and if Ok I will get our description ammended to include the ZX 16v if they're OK.
gjb02
Posts: 287
Joined: 20 Jul 2002, 20:37
Location: United Kingdom
My Cars:

Post by gjb02 »

Thanks for that Jon. Yet another helpful staff member.
No, I'm not being sarcastic! The two gents that served me in the Norwich Branch spent nearly 30 mins trawling through all the books they had, cross referencing against the computer and could only come up with the head gasket for that model?
I'm sure if the same processes were used to cross ref the rest of the ZX 16V bits, as were used with the bolts, I'm sure they'd be items you stock under another name that just aren't listed on your computer system. It's a shame because my first port of call for bits is always GSF, then Citroen, then anywhere I can get them. Even the Scrappy if necessary[:)]
This is a glaringly selfish request on my part to make things easier, and cheaper, for me to source bits. I'm not the only ZX 16v owner out there though.
Any chance of getting some Vacuum units (actuators) for the ACAV system in stock?? They break if you open the bonnet too quick[:D]!
As I'm sure other owners would testify. I'm looking at replacing both of mine just as a result of disconnecting them to do the head.[V]. They would sell, even if they are £5 cheaper than Citroen.
Thankyou Jon, I shall get back to you on there compatability.
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