displaying posts 1 to 23 of 23

Author Subject: bang bang bang at 4000rpm!
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #1
my weekend got a whole lot worse after overtaking, dropping a gear, revving to 6000, then all i herd was bang bang bang at 4000 rpm....
it only does it at that rpm, sounds like its coming from the top of the engine and not noticeable on low rpm, only when you put your foot down...
apparently its something about a conrod blah blah blah said the guy at the garage....
i know nothing about engines ect
so what im asking is....swap the engine, or get it rebuilt?
thanks!

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team umpalumpa.
Posted 15th Dec 2009 at 00:28
rallyeash

Seasoned Pro

Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

Status: Offline

Post #2
try and get a vid of it mate, is it more of a tapy sound or mor knocking?

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Posted 15th Dec 2009 at 00:55
MCH_GTi6

formerly mch

Location: Hayle

Registered: 09 Sep 2005

Posts: 2,456

Status: Offline

Post #3
Had a chat to him on the phone and from what he has described its bottom end that has gone...

he described very similar symtoms to what another lad locally had happen to his gti6 and it was bottom end failure...

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Team Rallye
Posted 15th Dec 2009 at 01:01
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #4
rallyeash wrote:
try and get a vid of it mate, is it more of a tapy sound or mor knocking?
i dont want to go near it, it breaks my heart every time i hear it! Angry

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team umpalumpa.
Posted 15th Dec 2009 at 01:17
n.g.k

Seasoned Pro

Location: Peoples Republic Of Cork

Registered: 03 Feb 2008

Posts: 6,200

Status: Offline

Post #5
Something like this?= Engine f*cked Yes

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Posted 15th Dec 2009 at 01:31
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #6
n.g.k wrote:
Something like this?= Engine f*cked Yes

very similar.....result? bottom end??....

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team umpalumpa.
Posted 15th Dec 2009 at 01:40
allesclar

Seasoned Pro

Location: Sheffield

Registered: 17 May 2009

Posts: 4,254

Status: Offline

Post #7
solution = new engine/rebuild Sad

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Posted 15th Dec 2009 at 01:45
lingl9z

Regular

Location: London

Registered: 05 Dec 2009

Posts: 154

Status: Offline

Post #8
Sorry to hear.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170419337864&ssPageName=STRK:MEWAX:IT#ht_682wt_1165 Smile
Posted 15th Dec 2009 at 02:01
lotek

Seasoned Pro

Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

Status: Offline

Post #9
Bottom end. Sad

out of interest when was the last time you changed the oil? and what oil did you use?

Posted 15th Dec 2009 at 02:15
roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

Status: Offline

Post #10
Thats deffo a bottom end sadly mate,which isnt cheap Sad

costs your looking at are

Replacement engine
Posted 15th Dec 2009 at 20:28
cjm_harris

Seasoned Pro

Location: Parts for Sale section

Registered: 04 Dec 2007

Posts: 7,442

Status: Offline

Post #11
Do you get any tell tale signs that the bottom end is going?

Or will it just let go like in this case? Sad

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
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Posted 15th Dec 2009 at 20:58
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #12
roland rat wrote:
Thats deffo a bottom end sadly mate,which isnt cheap Sad

costs your looking at are

Replacement engine

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team umpalumpa.
Posted 15th Dec 2009 at 21:01
MCH_GTi6

formerly mch

Location: Hayle

Registered: 09 Sep 2005

Posts: 2,456

Status: Offline

Post #13
ant_kernow wrote:
roland rat wrote:
Thats deffo a bottom end sadly mate,which isnt cheap Sad

costs your looking at are

Replacement engine

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Team Moonstone� Ph3 GTI6
Team Rallye
Posted 15th Dec 2009 at 21:04
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #14
is it possible for it to be a lose spark plug?
after watching other videos on u-boob the noise is no where near as loud?
lets just see what happends after tnite....

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team umpalumpa.
Posted 15th Dec 2009 at 21:09
roland rat

Yeeeah Rat fans!

Location: Swansea

Registered: 29 Nov 2006

Posts: 22,284

Status: Offline

Post #15
Unlikely a spark plug as you would get a tapping all the way through the rev range.

And its not as simple as simply swapping bottom ends as you want to make sure that the bottom end your fittings tidy.

If your unsure what your looking for get an expert to check it over
Posted 15th Dec 2009 at 21:18
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #16
ok mate cheers! Wink

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team umpalumpa.
Posted 15th Dec 2009 at 21:30
joevts

Senior User

Location: barnsley

Registered: 21 May 2008

Posts: 608

Status: Offline

Post #17
can't understand why it would only do it at that rpm. and wouldn't sorting the bottom end be cheaper/easier/better than swapping the whole lump?
Posted 17th Dec 2009 at 17:39
toby

Seasoned Pro

Location: Bourne

Registered: 13 Dec 2007

Posts: 1,400

Status: Offline

Post #18
Does it start and tick over fine? Any tapping noises or other odd mechanical sounds?

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Previous Peugeot - 2000(w)GTI-6, Me old China, Supercharged with working aircon!
Posted 17th Dec 2009 at 20:16
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #19
joevts wrote:
can't understand why it would only do it at that rpm. and wouldn't sorting the bottom end be cheaper/easier/better than swapping the whole lump?
probs, but i want my winter work car back on the road, new engine sorted....fitting in the next few days = happy boy! Big grin

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team umpalumpa.
Posted 17th Dec 2009 at 23:38
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #20
joevts wrote:
can't understand why it would only do it at that rpm. and wouldn't sorting the bottom end be cheaper/easier/better than swapping the whole lump?


Not really, with the cost of skimming, gaskets, stretch bolts etc. you will end up spending a lot, if however you know for a fact the complete engine you are buying is sound, then it's a much more economical way to go.

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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
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Harness bars
Posted 17th Dec 2009 at 23:43
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #21
daveyboy wrote:
joevts wrote:
can't understand why it would only do it at that rpm. and wouldn't sorting the bottom end be cheaper/easier/better than swapping the whole lump?


Not really, with the cost of skimming, gaskets, stretch bolts etc. you will end up spending a lot, if however you know for a fact the complete engine you are buying is sound, then it's a much more economical way to go.
well, if its not i know who to choke...Ninja .......mch.....LOL

________________________________________

team umpalumpa.
Posted 17th Dec 2009 at 23:52
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #22
You should be ok as long as you did'nt source your engine from Cornwall...Whistle LOL

________________________________________

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
Posted 17th Dec 2009 at 23:58
ant_kernow

Senior User

Location: newquay

Registered: 23 Oct 2009

Posts: 949

Status: Offline

Post #23
daveyboy wrote:
You should be ok as long as you did'nt source your engine from Cornwall...Whistle LOL
Dunno ......Smile

________________________________________

team umpalumpa.
Posted 18th Dec 2009 at 00:33

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