Real bad knocking

[scottharvey]

Can someone in auckland please come and look at my car today i am located in otahuhu for work today

[scottharvey]

its coming from the passenger side of the engine and i have not long put it in

[funkytown]

Big engine knock = big end. Do not drive it.

[scottharvey]

its not big end its coming from passenger side sounds like real bad valve

[boon]

 scottharvey said:

its not big end its coming from passenger side sounds like real bad valve

This would also qualify for "don\'t drive it"

[scottharvey]

i might go to possum after work and hope for the best

[funkytown]

if its knocking loudly from inside the motor that can only be metal on metal bits. ive looked inside several, only metal i promise. it wont just be gerbals with marrakas inside your motor starting a party at your expense either. rly... i promise this too.

history tells me where thats happening things dont last very long and is not how the factory designed it ... so il say it again..

driving it or turning it on is a REALLY dumb idea.

also it just occured to me that if my chance there were gerbals with marrakas and one of those marrakas did come apart and find its way around your motor this also would also be a very poor outcome for the overall health of your motor (and the gerbal for that matter). those beads inside them are many in number..

[loner]

 funkytown said:

if its knocking loudly from inside the motor that can only be metal on metal bits. ive looked inside several, only metal i promise. it wont just be gerbals with marrakas inside your motor starting a party at your expense either. rly... i promise this too.

history tells me where thats happening things dont last very long and is not how the factory designed it ... so il say it again..

driving it or turning it on is a REALLY dumb idea.

also it just occured to me that if my chance there were gerbals with marrakas and one of those marrakas did come apart and find its way around your motor this also would also be a very poor outcome for the overall health of your motor (and the gerbal for that matter). those beads inside them are many in number..

Funkytown, forget about the gerbals for a minute... he\'s talking about his motor, not your arse...

[scottharvey]

i have still gotta drive it 50 kms home

[funkytown]

tow it somewhere for a professional to inspect it.

driving it home might make for an expensive trip hm.

if you havent long since putting it in, any chance of come back is gone if you knowingly drive it now dude.

[scottharvey]

yeah i just listened again and sometimes it clears and and then comes back again not long after

[ADIKT]

Noise change with revs? or with car moving?

[scottharvey]

revs

[ADIKT]

 scottharvey said:

revs

Ouch

as above

get it towed to a proffesional..

[scottharvey]

yeah i got subirex coming in the week and have a look

[Stodart]

If the noise is coming and going ie not continuous, it could be the hydraulic tappets with airlocks in them/worn? Not sure - but maybe replacing o ring in oil pump may fix this?

http://www.clubsub.org.nz/forum/index.php/topic,19282.msg270092.html#msg270092

Had an 86 Leone Ea82 that did this from 150K km didn\'t do anything/worry about it until l found out what it was. Also thought it was going to self destruct - happened after l changed oil for 1st time after purchase 2nd hand @ 150K kms, perhaps that was a hint but added some special additive. but still clattered away ocassionally from time to time, couldn\'t be bothered replacing them. lt ran fine for another 14 years and to 360K km and was still fine then when l gave it to my neighbour 2009, until a teenager finished it off :\'(

[boon]

Go do some full boost pulls down the motorway. It helps if you repeatedly try to hook 6th, especially if you have a 5MT. This will assist in diagnosing the issue - if it\'s a big end or a valve, it will destroy the motor completely and you will know for sure that the motor is ruined, hence the issue will be diagnosed.

[scottharvey]

yep its a big end yay

[2000 legacy b4]

The thing is even when the beb goes it doesn\'t matter if you drive it or if you don\'t the motor is still bothered and will still need a rebuild IMO

[Guest]

 2000 legacy b4 said:

The thing is even when the beb goes it doesn\'t matter if you drive it or if you don\'t the motor is still bothered and will still need a rebuild IMO

If you keep driving it gets more expensive.

[2000 legacy b4]

More than likely the crank gets fucked any way

[Guest]

Yep then it gets out of tolerance for a regrind/welds itself up/puts more material through the heads/oil lines/turbo etc. Hey it may even put a rod out the block. Makes for good youtube videos tho.

[2000 legacy b4]

My one just seized in my old bg5 , I was at the redline when this happened tho

[funkytown]

and if you\'re unlucky the piston touches the head...

either way, any more running the motor than absolutely necessary will mean more and more $$$ to rebuild it.

[Marky]

A clonky BEB means oh darn I need a rebuild but I can still re-use the reasonably pricey subaru heads etc and maybe most of the motor is entirely good still and I can get away with a minimum of money to do this

Continuing to drive it means oh maybe I\'ll munt the thing badly enough a rebuild isn\'t possible and nothing can be salvaged, if part A welds to part B and then sends bits of motor out the exhaust you might be lucky enough to munch the turbo too

Hell if you\'re real lucky it might even seize bad enough to lock the wheels up and send you into something at speed, or just chew up part of the gearbox etc

It\'s not an "all is lost" scenario - it\'s by no means a good thing but it\'s not the end of the world either depending just how much damage has been done

edit - yeah same as what evowrx already said