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 Post subject: Meant to be there?
PostPosted: Thu Apr 28, 2005 12:29 pm 
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Joined: Mon Jan 17, 2005 10:25 pm
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Location: Melbourne
ok well i was stipping down the block yesterday and found this i just assume that it was a stuff up by the last person that worked on this engine but was talking to someone from and said it might be a filter can someone verify?


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 Post subject:
PostPosted: Thu Apr 28, 2005 12:40 pm 
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Location: Canberra
What is that?? It looks like a snapped off piece of a wire brush?


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PostPosted: Thu Apr 28, 2005 12:46 pm 
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Mine doesn't have that. And yes it does looke like a bit of a wire brush to me.

Dave

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PostPosted: Thu Apr 28, 2005 1:00 pm 
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Yes it is a pipe brush, I am guessing it was put in there to slow down the blow bye??

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PostPosted: Thu Apr 28, 2005 1:11 pm 
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yeah it is a bit of a brush with wire running thorugh it

why would you want to reduce blow bye and what is blow bye


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PostPosted: Thu Apr 28, 2005 1:17 pm 
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Blow-by is the pressure in the combustion chamber during the power stroke leaking down past the rings and pressurising the sump. This pressure causes the oil in the sump to get forced out the nearest hole (typically the one in the side of the block just above the air con bracket, and the rocker cover).

Normally only oil fumes come out in a healthy engine. That brush would do exactly nothing to stop either the cause or effect of blow-by, get rid of it.

Dave

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USA Daily: 2014 Nissan GT-R, very minor modifications for the track
USA Project: 1978 280Z, minor suspension upgrades, VK56DE conversion in progress. SOLD
AUS Race Car: 1973 240Z, L28ET, Autronic, GT35R. SOLD
AUS Project: 1972 1600, 3200km old S15 SR20DET, ground up rebuild. SOLD


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 Post subject:
PostPosted: Thu Apr 28, 2005 1:49 pm 
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One of the rocker covers I have lying around has the exact same thing. Not quite sure why!


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 Post subject:
PostPosted: Thu Apr 28, 2005 2:11 pm 
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thehelix112 wrote:
Blow-by is the pressure in the combustion chamber during the power stroke leaking down past the rings and pressurising the sump. This pressure causes the oil in the sump to get forced out the nearest hole (typically the one in the side of the block just above the air con bracket, and the rocker cover).

Normally only oil fumes come out in a healthy engine. That brush would do exactly nothing to stop either the cause or effect of blow-by, get rid of it.

Dave
Having that in there would slow what would of been more than fumes from being blown into the manifild.
Eventually the brush would get gunked up with oily ect ect, and none of the fumes would escape out the breather.

I have seen this before aswell, start her up and see how much fumes, oily spray comes out now it has been removed.

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1970 P510 SSS sedan
1971 P510 wagon + spare shell
197? 180B SSS Coupe
1981 910 SSS with Z18et, Leather interior


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