Spitting sound at 2.5K to 3-ishK revs on medium load

R

rjs

Guest

• Oct 2, 2005

• #1

My RR V8 EFi 1988 has started to make a spitting sound at between 2500
and 3500 (or so) revs under medium load. I either can't hear it or it
stops at higher revs and/or heavy load. I can't hear it off load which
makes the guesswork of tracing it less than easy.

Any thoughts?



TIA Richard



--
Real email address is RJSavage at BIGFOOT dot COM

 

R

rjs

Guest

• Oct 2, 2005

• #2

rjs wrote:

> My RR V8 EFi 1988 has started to make a spitting sound at between 2500
> and 3500 (or so) revs under medium load. I either can't hear it or it
> stops at higher revs and/or heavy load. I can't hear it off load which
> makes the guesswork of tracing it less than easy.
>
> Any thoughts?
>
>
>
> TIA Richard
>
>
>
Silly *********. I should have checked the 'guaranteed for life' Rimmer
Bros SS exhaust for cracks where the 4-into-1 manifolds join the Y piece.

Anyone know how good they are wrt the guarantee?


Richard ;-(
--
Real email address is RJSavage at BIGFOOT dot COM

 

T

Thingy_wotsit

Guest

• Oct 2, 2005

• #3

"rjs" <[email protected]> wrote in message
news:[email protected]...
> My RR V8 EFi 1988 has started to make a spitting sound at between 2500 and
> 3500 (or so) revs under medium load. I either can't hear it or it stops
> at higher revs and/or heavy load. I can't hear it off load which makes
> the guesswork of tracing it less than easy.
>
> Any thoughts?

Manifold studs become worn allowing the down pipe nuts to work loose. The
manifold will need removal and stud replacing it it's this.

Lee D

 

R

Richard

Guest

• Oct 3, 2005

• #4

"rjs" <[email protected]> wrote in message
news:[email protected]...
> rjs wrote:
>
>> My RR V8 EFi 1988 has started to make a spitting sound at between 2500
>> and 3500 (or so) revs under medium load. I either can't hear it or it
>> stops at higher revs and/or heavy load. I can't hear it off load which
>> makes the guesswork of tracing it less than easy.
>>
>> Any thoughts?
>>
>>
>>
>> TIA Richard
>>
>>
>>
> Silly *********. I should have checked the 'guaranteed for life' Rimmer
> Bros SS exhaust for cracks where the 4-into-1 manifolds join the Y piece.
>
> Anyone know how good they are wrt the guarantee?
>
>
> Richard ;-(
> --
> Real email address is RJSavage at BIGFOOT dot COM

I have a rimmer stainless system on my 90. its very rusty!!!! when i rang
them they said it will rust and the 'guarantee' covers for perforation only.
the silencer is still very shiney! Personnnally i wouldnt touch them again
..
Richard

 

R

rjs

Guest

• Oct 3, 2005

• #5

Thingy_wotsit wrote:


>
> Manifold studs become worn allowing the down pipe nuts to work loose. The
> manifold will need removal and stud replacing it it's this.
>
> Lee D
>
>

Hi Lee

Both manifolds are split near were the 4 branches combine into one -
just short of the connections to the Y piece. <sigh>


Richard
--
Real email address is RJSavage at BIGFOOT dot COM

 

H

hammy1967

Guest

• Oct 6, 2005

• #6

sounds like what i have a worn cam lobe or stuck tappit on number 7 cylinder
for some reason always number 7 cylinder stick a bar on the rocker cover and
have a listen you might just hear it
"Richard" <[email protected]> wrote in message
news:[email protected]...
>
> "rjs" <[email protected]> wrote in message
> news:[email protected]...
>> rjs wrote:
>>
>>> My RR V8 EFi 1988 has started to make a spitting sound at between 2500
>>> and 3500 (or so) revs under medium load. I either can't hear it or it
>>> stops at higher revs and/or heavy load. I can't hear it off load which
>>> makes the guesswork of tracing it less than easy.
>>>
>>> Any thoughts?
>>>
>>>
>>>
>>> TIA Richard
>>>
>>>
>>>
>> Silly *********. I should have checked the 'guaranteed for life' Rimmer
>> Bros SS exhaust for cracks where the 4-into-1 manifolds join the Y piece.
>>
>> Anyone know how good they are wrt the guarantee?
>>
>>
>> Richard ;-(
>> --
>> Real email address is RJSavage at BIGFOOT dot COM
>
> I have a rimmer stainless system on my 90. its very rusty!!!! when i rang
> them they said it will rust and the 'guarantee' covers for perforation
> only. the silencer is still very shiney! Personnnally i wouldnt touch
> them again .
> Richard
>
>

 

R

rjs

Guest

• Oct 6, 2005

• #7

hammy1967 wrote:
> sounds like what i have a worn cam lobe or stuck tappit on number 7 cylinder
> for some reason always number 7 cylinder stick a bar on the rocker cover and
> have a listen you might just hear it
>

Actually a split in at least one header pipe in each 4 branch exhaust
pipe. (Thank goodness as I was fearing engine horrors)

Rgds

Richard


--
Real email address is RJSavage at BIGFOOT dot COM