displaying posts 1 to 16 of 16

Author Subject: loose m5 bolt /timing belt damage
mjt4130

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Location: hessle

Registered: 29 Sep 2009

Posts: 200

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Post #1
This happened today, reckon the belts slipped after this bolt was loose and got between a pulley and the belt, sending timing out and slashing the belt. Not sure if the head is s**teyed yet. I m thinking these bolts need loctite on them, check yours now!Cry
Posted 26th May 2012 at 21:46
bigbadbowen

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Location: Winchester

Registered: 21 Nov 2003

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Post #2
Where i that bolt from ?
Posted 26th May 2012 at 22:32
mjt4130

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Location: hessle

Registered: 29 Sep 2009

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Post #3
the bolt is from behind the pulley, not sure what it holds
Posted 26th May 2012 at 23:30
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #4
Look like an inner cam cover bolt possibly, although it's so long since I've done a belt on a '6' now the memory is struggling a bit...

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Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 26th May 2012 at 23:44
bigbadbowen

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Post #5
I had the pulleys off my engine today whilst doing a belt change didn't notice any bolts up there ?

Posted 26th May 2012 at 23:53
miles

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Location: Ringwood

Registered: 28 Dec 2002

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Post #6
Yep, 6 bolts on the inner cambelt cover, mind allot of people don't use thread-lock when fitting them back in the head, A huge no no.

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Posted 27th May 2012 at 00:21
mjt4130

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Post #7
My head was rebuilt before I owned the car a few years ago. Getting my local garage to put a belt on and time it up, guess thats when I find out the bad news. The car is currently sitting on a ramp next to 3 escort rally cars, a classic 911 rally car and a 6R4. Will try and get some pictures next week.
Posted 27th May 2012 at 09:16
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #8
If the belt has slipped/jumped or come off you WILL have piston to valve contact. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 28th May 2012 at 11:22
mjt4130

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Post #9
quote:
If the belt has slipped/jumped or come off you WILL have piston to valve contact

So potentially, what would you do while the head was apart? Do these heads respond well to a bit of porting and polishing? Pre incident it was producing good power but if the heads being rebuilt how can I improve things? Dont want to change the cams and not intending on charging it
Posted 31st May 2012 at 20:48
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #10
They don't need porting, they flow extremely well as standard.

Just make sure when it's apart you check every valve and guide, get the head pressure tested and skimmed and a new set of valve stem oil seals. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 31st May 2012 at 21:21
honestly3k

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Location: Berkhamsted

Registered: 06 Apr 2009

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Post #11
I had a very similar problem to this after i drove my 6 home for the first time.

It sounded like a tractor and turned out there was a bolt wedged between the belt and the cambelt cover. It gauged out a line around the belt.
Apparantly a bolt or two got in with the camshafts too at some point and they had to be machined again.

But it somehow didnt damage the head. Sounds sweet as a nut and has done since.

Hopefully yours will have the same outcome

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Posted 31st May 2012 at 22:08
mjt4130

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Post #12
The engines up and running! Just need to sort out an idling problem and its thereBig grin
Posted 20th Jun 2012 at 08:34
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #13
mjt4130 wrote:
The engines up and running! Just need to sort out an idling problem and its thereBig grin


Had the belt slipped at all? Any damage? Dunno

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jun 2012 at 10:13
mjt4130

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Post #14
No damage to head but they cant get it to idle, which is strange as it idled perfectly before
Posted 24th Jun 2012 at 13:21
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #15
Probably a sensor which hasn't been plugged in somewhere when putting it back together...Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 24th Jun 2012 at 18:48
mjt4130

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Location: hessle

Registered: 29 Sep 2009

Posts: 200

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Post #16
Downer. Its a tapper! Still goes like a rocket but its got a very distinct tappety tap noise. Think I ll get it rebuilt over winter and risk it for now. Gutted.
Posted 1st Jul 2012 at 13:44

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