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| Author | Subject: Coolant pressurising |
 blandy
Seasoned Pro  Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #26
They did supply a cap with it but will check that rating tomorrow. As 1.4bar would be around 21psi so will check that to be sure. Can't see it being a issue with the rad itself as can't see much to go wrong with a rad not that could cause pressure. Its definitely gaining pressure as its pushing the coolant out and then I bleed it again which then takes the collected coolant to top it up to around mid way on the tank. |
 Posted 10th Aug 2013 at 19:55
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #27
Just looked at pro alloy caps which is what was supplied and it states 21psi so prob is right but will double check it tomorrow as well as having a good look at the cap etc Oh and takedown yeah ill send you a beer if your right dunno how it'll hold in the envelope though lol |
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Posted 10th Aug 2013 at 20:01
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coskev
Seasoned Pro  Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #28
blandy wrote: They did supply a cap with it but will check that rating tomorrow. As 1.4bar would be around 21psi so will check that to be sure. Can't see it being a issue with the rad itself as can't see much to go wrong with a rad not that could cause pressure. Its definitely gaining pressure as its pushing the coolant out and then I bleed it again which then takes the collected coolant to top it up to around mid way on the tank. All coolant systems are pressurised, hence the cap being rated to a certain level before it releases excess  If your cap is weak it could be releasing before it should, if your car is producing excess pressure you will feel it by squeezing top hose, will be virtually solid and you won't be able to squeeze it  ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 10th Aug 2013 at 22:51
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #29
Well done a second sniffer test today and the results were not good as it turned colour strait away so kinda confirms it all now  which is but annoying as engines only been in a matter of months as a good engine and done around 600miles and have had a lot of cooling issues for a lot of that's although have never even got close to overheating as I've always been paranoid about it so watched it so carefully so can only imagine its had the underlying issue for some time.. Also whipped the head off and there's no life left in the head      |
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Posted 11th Aug 2013 at 18:47
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #30
Do you mean the head has no more meat left to skim off?  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 11th Aug 2013 at 18:56
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #31
Yeah it's basically flush can't even feel a step so beyond another skim |
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Posted 11th Aug 2013 at 18:57
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #32
Oh dear, replacement head time then. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 11th Aug 2013 at 19:24
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #33
Measure the height of the head, given that is an o.e pug gasket its not likely to have been off before.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 19:38
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #34
I can see the step there, so surely you can feel it?!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 19:40
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #35
Yes, having actually now looked at the photographs, I also can see the step now.  Surely there must still be some life left in that. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 11th Aug 2013 at 19:45
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #36
No it's litterally dead flat can barely feel it with fingernail, the pic is pretty poor and yes it has 100% been off before as I was told the gasket was done around a year before I got it plus look at the valves some are different |
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Posted 11th Aug 2013 at 19:53
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rallyeash
Seasoned Pro  Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #37
It is possible to buy a repair gasket from pug that is thicker. It is for a XU7 though but I ran one on my old engine ________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 11th Aug 2013 at 20:03
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #38
you wont want to use an XU7 gasket, as that'll be 83mm bore.but you can indeed buy an XU10 repair gasket, its listed for the J4R engine. measure it before you throw it away. gasket looks a hell of a lot older than a year or so... ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 20:08
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blandy
Seasoned Pro Location: Bucks Registered: 25 Feb 2007 Posts: 2,437 Status: Offline |
Post #39
Yeah will measure it just to be sure before doing anything with it. |
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Posted 11th Aug 2013 at 20:13
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rallyeash
Seasoned Pro Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #40
Yeah sorry that was on my old mi bottom end with a XU10 head________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 11th Aug 2013 at 20:16
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #41
Yes, I believe the repair gasket is 1.4mm thick as opposed to 1.2mm. Welshpug will be able to confirm though. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 11th Aug 2013 at 21:11
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #42
yup, spot on, to go with the pug specified 0.2mm skim limit.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 21:16
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JWP EFi
Turbo Legend!  Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #43
according to my local Peugeot dealers, 2 of them, the 1.4mm gasket is not available however gaskets are easily obtainable from various factors, 1.3/1.4/1.45mm but listings are for the S16 and 8V turbo. Same gasket but won't be a Multi layer steel. i Recently had a head skimmed that was already damn close to being flush with the marker, fitted a 1.45 gasket. Personally i'm not a fan of fibre head gaskets so the only way round this is to either pocket the pistons or source another good head |
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Posted 11th Aug 2013 at 21:25
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #44
405 T16 used fibre with 1.2 bar, I would have no issues using one, they are not known to give issues.quite odd all these engines are getting to 15 years and the gaskets giving up isn't it. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 21:28
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #45
just thought of something else to check, have a look across the top of the water jacket on the block, not very common, but have been known to crack across the top of them.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 11th Aug 2013 at 21:29
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #46
welshpug! wrote: just thought of something else to check, have a look across the top of the water jacket on the block, not very common, but have been known to crack across the top of them. Mei you are bang on! mine has 2 cracks exactly where you just mentioned, i will post a pic tomorrow. i suspected a cracked head, had it pressure tested a second time and got the all clear. after a standing and staring at the block i noticed something |
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Posted 11th Aug 2013 at 21:34
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #47
welshpug! wrote: gasket looks a hell of a lot older than a year or so... Re-used the old gasket by looks of it!!!  ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 12th Aug 2013 at 06:14
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #48
T99PUG wrote: welshpug! wrote: just thought of something else to check, have a look across the top of the water jacket on the block, not very common, but have been known to crack across the top of them. Mei you are bang on! mine has 2 cracks exactly where you just mentioned, i will post a pic tomorrow. i suspected a cracked head, had it pressure tested a second time and got the all clear. after a standing and staring at the block i noticed something At least you've found the issue now rather than when you rebuilt it. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 12th Aug 2013 at 07:32
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #49
Said it wasnt the head  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 12th Aug 2013 at 07:47
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JWP EFi
Turbo Legend! Location: edinburgh Registered: 07 Mar 2010 Posts: 2,163 Status: Offline |
Post #50
well done you!this is the first cracked gti6 block ive ever seen, i have had the occasional cracked head. i would have expected the alloy to crack before cast iron. Everyday's a school day lol |
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Posted 12th Aug 2013 at 21:02
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