cosworth breather advice needed
Thread Starter
formerly beefy-rst-2
iTrader: (6)
Joined: Sep 2005
Posts: 10,072
Likes: 3
From: cleveland rsoc
ok folks ,
just looking for advice really , purchased fudgeys old pro alloy tanks for my cossie build , not 100 % sure on the fitting sizes ect till they arrive ,
but my question is this ......
what would be classed as the minimum amount of breather ports would you need for a 450 hp yb ?
and as a second part to the question , where the best loactions on the block to have currently i have a fitting welded in the sump , and breather returns either side in the block ,
the rocker could be drilled for an additional breather , but im looking for a super clan bay , and a very minimal look
so ideally the less the better but still allowing the motor to perform ....
anyone ?
pic of said breather ( as said till i get home i not sure if the two fittings on top are breather an fittings , )

beef
just looking for advice really , purchased fudgeys old pro alloy tanks for my cossie build , not 100 % sure on the fitting sizes ect till they arrive ,
but my question is this ......
what would be classed as the minimum amount of breather ports would you need for a 450 hp yb ?
and as a second part to the question , where the best loactions on the block to have currently i have a fitting welded in the sump , and breather returns either side in the block ,
the rocker could be drilled for an additional breather , but im looking for a super clan bay , and a very minimal look
so ideally the less the better but still allowing the motor to perform ....
anyone ?
pic of said breather ( as said till i get home i not sure if the two fittings on top are breather an fittings , )

beef
Last edited by -beefy-; May 21, 2011 at 07:41 PM.
PassionFord Post Whore!!
iTrader: (4)
Joined: May 2004
Posts: 7,886
Likes: 35
From: Bangor, Northern Ireland
You want -
-12 from the inlet side of the block, where the standard kidney box is, push in adaptor availible from GGR that takes -12 hose onto it.
-10 (IIRC) from under the exhaust manifold
-10 to atmosphere
-8 return to the sump
Don't think the 2wd sump has an oil return standard like the 4x4 though, so you'll need a -8 welded there.
As for the cam cover breather, i was told there no real need for them unless you are using the car hard - i.e. racing it or its big bhp.
This is how i did mine

-12 from the inlet side of the block, where the standard kidney box is, push in adaptor availible from GGR that takes -12 hose onto it.
-10 (IIRC) from under the exhaust manifold
-10 to atmosphere
-8 return to the sump
Don't think the 2wd sump has an oil return standard like the 4x4 though, so you'll need a -8 welded there.
As for the cam cover breather, i was told there no real need for them unless you are using the car hard - i.e. racing it or its big bhp.
This is how i did mine

As above beef, the one on your sump will be return
Just remember one thing when doing breathers,,, under oil level, return, above oil level, breather
So kidney can, exh side back of block to breath
One return to sump and a atmosphere off the breather, perfect
Of if you want a clean bay use a wrc tank
Just remember one thing when doing breathers,,, under oil level, return, above oil level, breather
So kidney can, exh side back of block to breath
One return to sump and a atmosphere off the breather, perfect
Of if you want a clean bay use a wrc tank
Thread Starter
formerly beefy-rst-2
iTrader: (6)
Joined: Sep 2005
Posts: 10,072
Likes: 3
From: cleveland rsoc
As above beef, the one on your sump will be return
Just remember one thing when doing breathers,,, under oil level, return, above oil level, breather
So kidney can, exh side back of block to breath
One return to sump and a atmosphere off the breather, perfect
Of if you want a clean bay use a wrc tank
Just remember one thing when doing breathers,,, under oil level, return, above oil level, breather
So kidney can, exh side back of block to breath
One return to sump and a atmosphere off the breather, perfect
Of if you want a clean bay use a wrc tank
only dilemma i have jim , is the -12 iirc on the sump is in a place thats gave me conflicting opinions ,
its a pro alloy big wing sump , but the fittings not on the wing , its high up on the side of the sump ,
i was told its a breather , but some have said its in the wrong place ect ??
ill get a pic up later of my fitting locations
Thread
Thread Starter
Forum
Replies
Last Post
big_Rad
General Car Related Discussion.
8
Sep 15, 2017 09:36 AM
Focosmitch
Ford RS Cosworth Parts for Sale
2
Aug 14, 2015 07:29 AM
wheelwizardrefurbs
Technical help Q & A
10
Aug 4, 2015 06:23 PM




