Hi all,
Most questions have been asked on this forum, but I 'm not sure if the ones below have, so here goes. BTW shoot me down in flames if either have, but post the link first.
I wanted to upgrade the oil breather system on my S2 Avant, as part of a general upgrade of most bits.
What I have in mind is to remove all of the factory oil breather re-circulation apparatus, and replace it with a catch tank system.
The new oil breather catch tank would have two inlets on the side of the tank, ( the tank will be roughly similar in size to a 500 ml can of beer ), one inlet will come from the top of the engine and the second inlet will come from the side of the engine block.
There will be an outlet point at the base of the catch tank to allow the liquid oil drain back into the sump or a second tank mounted lower down that can be emptied easily as the need arises.
All of the above is is very straight forward, the difficult part, ( for me anyway ), is the breather out at the top of the oil catch tank, normally this just vents to the atmosphere, via a small filter.
I want to have this outlet go to the exhaust pipe to create negative pressure in the engine block, ( as suggested, I think, in a David Vizard's book about tuning Ford Pinto engines ). The article that I read put forward the idea that by having this negative pressure inside the engine block that it increased power.
Where the pipe joins into the exhaust pipe is the bit I wanted to get someone's suggestion as to where I might source a suitable stainless steel "Y" shaped piece to let into the exhaust which is to be made up for the car anyway as part of the upgrades.
I'm not good enough on the computer to be able to post up a representative drawing of the "Y" shaped pipe, but the main exhaust would naturally be larger than the one from the top of the oil breather catch tank. As part of this piece of pipe-work it would have a shield inside the main section of the exhaust pipe to prevent the exhaust from the engine interferring with the vapour from the top vent of the oil breather catch tank. Additionally it should also have a one way valve in it to prevent the exhust from being able to go back towards the oil breather catch tank.
I hope you can understand the principle and the question ? !.
I had thought that this type of thing might be available in the custom car "world", but have not found anyone who makes such an item off the shelf or on a bespoke basis.
One last separate question what is the principle behind / purpose of / advantage for having second much smaller exaust pipe at the rear of the car that is fed by the dump or blow valve from the turbo? i.e. a screamer pipe?
Thanks in advance for any suggestions anyone has on either of these two queries.
Kind regards.
Most questions have been asked on this forum, but I 'm not sure if the ones below have, so here goes. BTW shoot me down in flames if either have, but post the link first.
I wanted to upgrade the oil breather system on my S2 Avant, as part of a general upgrade of most bits.
What I have in mind is to remove all of the factory oil breather re-circulation apparatus, and replace it with a catch tank system.
The new oil breather catch tank would have two inlets on the side of the tank, ( the tank will be roughly similar in size to a 500 ml can of beer ), one inlet will come from the top of the engine and the second inlet will come from the side of the engine block.
There will be an outlet point at the base of the catch tank to allow the liquid oil drain back into the sump or a second tank mounted lower down that can be emptied easily as the need arises.
All of the above is is very straight forward, the difficult part, ( for me anyway ), is the breather out at the top of the oil catch tank, normally this just vents to the atmosphere, via a small filter.
I want to have this outlet go to the exhaust pipe to create negative pressure in the engine block, ( as suggested, I think, in a David Vizard's book about tuning Ford Pinto engines ). The article that I read put forward the idea that by having this negative pressure inside the engine block that it increased power.
Where the pipe joins into the exhaust pipe is the bit I wanted to get someone's suggestion as to where I might source a suitable stainless steel "Y" shaped piece to let into the exhaust which is to be made up for the car anyway as part of the upgrades.
I'm not good enough on the computer to be able to post up a representative drawing of the "Y" shaped pipe, but the main exhaust would naturally be larger than the one from the top of the oil breather catch tank. As part of this piece of pipe-work it would have a shield inside the main section of the exhaust pipe to prevent the exhaust from the engine interferring with the vapour from the top vent of the oil breather catch tank. Additionally it should also have a one way valve in it to prevent the exhust from being able to go back towards the oil breather catch tank.
I hope you can understand the principle and the question ? !.
I had thought that this type of thing might be available in the custom car "world", but have not found anyone who makes such an item off the shelf or on a bespoke basis.
One last separate question what is the principle behind / purpose of / advantage for having second much smaller exaust pipe at the rear of the car that is fed by the dump or blow valve from the turbo? i.e. a screamer pipe?
Thanks in advance for any suggestions anyone has on either of these two queries.
Kind regards.
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