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displaying posts 1 to 12 of 12
| Author | Subject: Tapping after head gasket failure. |
 mikekean
Newbie  Location: St clement Registered: 29 Oct 2009 Posts: 11 Status: Offline |
Post #1
Hi,Ive just bought a 306 Rallye, it had the head gasket changed last year but it sounds like one of the tappets is dead in the top end. Ive had a look at a few threads on here about tapping and 99% are regarding bent valves due to camblet failure. Im fairly sure this car has never had a belt failure as its low mileage and had the cambelt changed before. Any idea's what it could be? Thanks Mike |
 Posted 8th Mar 2011 at 23:28
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rallyeash
Seasoned Pro  Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #2
incorrect timing after the head gasket was replaced, resulting in a bent valve while being assembled  ________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 8th Mar 2011 at 23:46
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mikekean
Newbie Location: St clement Registered: 29 Oct 2009 Posts: 11 Status: Offline |
Post #3
Sounds feasible, but surely if the timing was out the pistons would hit the valves all the time? |
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Posted 9th Mar 2011 at 00:05
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rallyeash
Seasoned Pro Location: Devizes Registered: 11 Dec 2006 Posts: 4,424 Status: Offline |
Post #4
no, either a couple of valves would of touched the piston when timing the engine, probably unknowingly then timed up normally. (most common)or when the head was removed it was either stored face down or caught a valve on somthing on removal or assembley ________________________________________ 230 hp 2.1 16v XU 205 rallye on jenveys Project thread here309 3dr K20 Type R |
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Posted 9th Mar 2011 at 00:14
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mikekean
Newbie Location: St clement Registered: 29 Oct 2009 Posts: 11 Status: Offline |
Post #5
Not exactly what i wanted to hear lol. Gonna try some tappet treatment in it anyway, probably wont do bugger all but for a few quid its worth a try. If not though where can i get genuine valves or decent quality aftermarket valves for a decent price? |
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Posted 9th Mar 2011 at 02:00
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vetch
Regular  Location: Swansea Registered: 25 Oct 2007 Posts: 497 Status: Offline |
Post #6
The HG went on one of my previous 6s. After the "repair" it was tapping like a bas**rd, it got louder and louder...a couple of bent valves as a result of the aforementioned "repair". |
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Posted 9th Mar 2011 at 02:05
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #7
Genuine valves are made by a company called TRW...I suspect the valves have tangled when the head was refitted and timed up...  Stan. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 9th Mar 2011 at 02:06
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,871 Status: Offline |
Post #8
mikekean wrote: Gonna try some tappet treatment in it anyway I really wouldnt bother, get it to a decent mechanic and explain what the common issues are with these engines. Namely fook all valve to piston clearance, plus very large valve heads which can clash against each other if the cams are turned independently, and due to their size they protrude out of the combustion chamber with the cams pinned so if the head was laid face down they can bend this way too (only 6mm stems IIRC) Also lower bely pulley's outer section can slip when the rubber deteriorates, the pin hole is in the outer section  (not an issue if whoever takes it apart pins it up properly beforehand...)________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 9th Mar 2011 at 02:11
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mikekean
Newbie Location: St clement Registered: 29 Oct 2009 Posts: 11 Status: Offline |
Post #9
More than likely is a bent valve then. Sounds like its only one of them to so hopefully wont have to buy a full set of valves. |
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Posted 9th Mar 2011 at 02:25
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daveyboy
aka Jim Davey  Location: Southampton Registered: 01 Oct 2007 Posts: 8,648 Status: Offline |
Post #10
mikekean wrote: More than likely is a bent valve then. Sounds like its only one of them to so hopefully wont have to buy a full set of valves. You will more than likely need a new valve guide for the valve/s that are bent as they are also usually damaged by the bending event. ________________________________________ R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.Some of my services: (See my for sale threads) Engine mount/chassis repair Solid Beam Mounts BACK IN PRODUCTION Harness bars |
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Posted 9th Mar 2011 at 05:54
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mikekean
Newbie Location: St clement Registered: 29 Oct 2009 Posts: 11 Status: Offline |
Post #11
Yeah I would be getting a new guides fitted with whatever valves were replaced. Do I order standars sized guides, or do i need to go over size and get the head reamed out? Will the valve seats need re-cutting to? or can i get away with just laping the new valves in if the seats arent visibly damaged. |
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Posted 9th Mar 2011 at 06:04
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pugjim
Seasoned Pro  Location: Sheffield Registered: 11 Mar 2007 Posts: 1,380 Status: Offline |
Post #12
mikekean wrote: Yeah I would be getting a new guides fitted with whatever valves were replaced. Do I order standars sized guides, or do i need to go over size and get the head reamed out? Will the valve seats need re-cutting to? or can i get away with just laping the new valves in if the seats arent visibly damaged. Standard new guides will be fine, if the seats are in good condition and not damaged you should be fine to just lap the new valves in. |
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Posted 10th Mar 2011 at 23:28
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