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Help rattling noise from engine around 2000rpm to 2300rpm 

 

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 Post subject: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Sun Jan 16, 2011 6:55 pm 
Oompa Loompa
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Age: 27

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Joined: 26th Jan 2008

Ride: EL Falcon

Location: Brisbane
QLD, Australia

Hi i have an 1996 EL 6cyl and have recently put a wade 977b regrind cam in it. After fitting the cam had really bad chain rattle through out the rev range and have now replace the chain and guides but still have a rattle from 2000rpm to 2300rpm. Im positive its not lifters as it only happens around that rev range. Have fitted the 2nd set of shims for the regrind cam. If anyone has had this problem would much appreciate it if you could help me out.
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Sun Jan 16, 2011 7:55 pm 
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Ride: ford falcon au3 xr8

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NSW, Australia

it could be worn valve guides.???
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Sun Jan 16, 2011 8:45 pm 
Getting Side Ways
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Ride: 92 EB s

Location: DORRIGO
NSW, Australia

Probably not related but make sure you give it a bottle of engine flush and a oil change with a quality oil. If you havnt already.
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Sun Jan 16, 2011 8:59 pm 
Technical Contributor
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Could be Timing Chain/Guides?
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Sun Jan 16, 2011 11:52 pm 
Getting Side Ways
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Ride: EL F100 CAPRI XR EF

Power: 234 rwkw

Location: brighton
SA, Australia

you reset the chain tensioner properly?

my brother inlaws ed had a rattle at around the same rpm, it was a loose cam bolt through the cam gear. im doubting yours would be that, if it still does it after new timing set and tensioners
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Mon Jan 17, 2011 1:13 pm 
Oompa Loompa
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Age: 27

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Joined: 26th Jan 2008

Ride: EL Falcon

Location: Brisbane
QLD, Australia

I have done a flush and change oil and filter, the cam bolt is tight and the tenisoner is released properly. I don't think it's valve guides as it doesn't use oil or blow smoke. And it has all new chain guides and chain. Could it be the hla's.
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Mon Jan 17, 2011 1:50 pm 
Getting Side Ways
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Age: 49

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Ride: EL F100 CAPRI XR EF

Power: 234 rwkw

Location: brighton
SA, Australia

sometimes the hla's take 100-200kms to quieten down, a decent drive usually does it.
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Mon Jan 17, 2011 8:19 pm 
Oompa Loompa
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Joined: 26th Jan 2008

Ride: EL Falcon

Location: Brisbane
QLD, Australia

Iv let it go for 2 months which for me is over a 1000kms
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Mon Jan 17, 2011 9:03 pm 
Getting Side Ways
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What valve springs?
what head gasket?
Has the head been shaved?

 

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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Tue Jan 18, 2011 11:56 am 
Getting Side Ways
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Incase you don't see where i'm heading with that, You can't asume it's not chain rattle just because it has a new chain and guides.

 

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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Tue Jan 18, 2011 1:12 pm 
Oompa Loompa
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Age: 27

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Joined: 26th Jan 2008

Ride: EL Falcon

Location: Brisbane
QLD, Australia

Head has never been pulled off since iv owned it for 3years and it's got standard springs but the noise is coming from the front. Could the cogs be worn causing the noise.
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Tue Jan 18, 2011 5:26 pm 
Getting Side Ways
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I'd say being a 96 model the heads been off at least once.
You're also useing original valve springs that have been going since 96.

First step is new valve springs. Even just new XR spec ones from crow.

As far as the gears them selves, I would assume that would have been checked when the chain and guides were done.

 

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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Tue Jan 18, 2011 8:57 pm 
Oompa Loompa
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Location: tumut
NSW, Australia

its proberly not the problem as you said you think its cam related but you didnt advance the ignition timing or anything as it might be pinging slightly
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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Tue Jan 18, 2011 9:03 pm 
Tyre Shredder
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Location: St clair
NSW, Australia

i had a rattle like that. it was the timing chain rubbing on the timing case slowly grinding away until it cracked through. it only came on around the 2200rpm mark. that car no longer works now. get it sorted asap

 

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 Post subject: Re: Help rattling noise from engine around 2000rpm to 2300rpm
Posted: Thu Jan 20, 2011 7:53 pm 
Oompa Loompa
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Age: 27

Posts: 22

Joined: 26th Jan 2008

Ride: EL Falcon

Location: Brisbane
QLD, Australia

I don't think it has any thing to do with ignition timing but I notice yesterday when I changed the cam timing back to standard the nosie is now starting at around 1800 to 2100 so I don't know why it would change like that
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