4396 replies to this topic

[CHILL Gone DUTCH]

Was thinKing of modifying the mesh as it a other place to let the heat out

Edited by CHILL Gone DUTCH, 27 January 2015 - 03:49 PM.

[alexb]

Latest idea for Pcv system

 

That will only work when that pump has enough capacity to create a vacuum even with the manifold under pressure. I don't think it can. Vacuum pumps for crank cases are available, but tend to be a lot bigger than that small camshaft driven pump.

 

But why not use the oil return hole in the engine originally meant for the turbo oil return? Put a pipe on there like an oil dip pipe and a filter on the end, essentially just opening the crank case to atmosphere. Close the PCV system. Vent the head through the cam cover using that fancy catch tank. Or did you already cover that in one of your iterations?
 

[smiley]

Interesting

 

[CHILL Gone DUTCH]

Latest idea for Pcv system

 
That will only work when that pump has enough capacity to create a vacuum even with the manifold under pressure. I don't think it can. Vacuum pumps for crank cases are available, but tend to be a lot bigger than that small camshaft driven pump.
 
But why not use the oil return hole in the engine originally meant for the turbo oil return? Put a pipe on there like an oil dip pipe and a filter on the end, essentially just opening the crank case to atmosphere. Close the PCV system. Vent the head through the cam cover using that fancy catch tank. Or did you already cover that in one of your iterations?
 

I did consider the oil return at one point but decided against it,
I also think that SC applications create to much vacuum
As long the is slight vacuume all should be good

I no there will be mostly air being pulled from vacuum from the filter but this will also help to cool the separators within the engine

[Kieran McC]

Was thinKing of modifying the mesh as it a other place to let the heat out

Carve some big vents in the rear of the clam😂

[CHILL Gone DUTCH]

No Kieren I like my clams original Well it's the only original bits left

[CHILL Gone DUTCH]

Well I sh!t myself today And not because of the HARROP £300.00 spent on bits and fuel pipe to alter the fuel lines down other side of the engine Wow I'm gob smacked It did include bits for fuel rail Jic/ing hose fittings 200 series fuel hose

Edited by CHILL Gone DUTCH, 10 February 2015 - 04:34 PM.

[CHILL Gone DUTCH]

Well I sh!t myself today And not because of the HARROP £300.00 spent on bits and fuel pipe to alter the fuel lines down other side of the engine Wow I'm gob smacked It did include bits for fuel rail Jic/unf hose fittings 200 series fuel hose

[Graeme Lambert]

Well I sh!t myself today And not because of the HARROP £300.00 spent on bits and fuel pipe to alter the fuel lines down other side of the engine Wow I'm gob smacked It did include bits for fuel rail Jic/unf hose fittings 200 series fuel hose

Know the feeling. You should try shelling out for an oil cooler and fittings at the same time!

[CHILL Gone DUTCH]

Lol my saab engine came with oil cooler so that will do lol We need updates in your build graham I'm hoping to get mine on the road on 1st march as feb is a short month and couldn't face paying road tax for a short month

Edited by CHILL Gone DUTCH, 10 February 2015 - 05:27 PM.

[Graeme Lambert]

We need updates in your build graham  

 

When I'm in the mood, and have some decent daylight pics. 

 

Hoping the next time I update it'll have been dyno'd and can do a proper positive catch-up on the project thread.

[oakmere]

Chill Just seen your latest setup for the PVC on z22se and in the latest pic above. How will this work? Surely it will just suck air through the rocker cover from the small filter to the brake vacume pump! Air will just take the path of least resistance.

Edited by oakmere, 21 February 2015 - 07:31 AM.

[CHILL Gone DUTCH]

I was hoping this is the case cooling the separators more, But if crank pressure did build up I'm sure it would be taken with air flow, The idea is to keep it under slightly negative pressure which im hoping will prevent crank pressure

[oakmere]

Unless the vacume pump has the power of a vacume cleaner there is no way you will create a vacume with an open to air filter on the rocker cover! Go back to your earlier design the way the system was ment to work. I really liked the design with the catch tank bypass.

[CHILL Gone DUTCH]

Unless the vacume pump has the power of a vacume cleaner there is no way you will create a vacume with an open to air filter on the rocker cover! Go back to your earlier design the way the system was ment to work. I really liked the design with the catch tank bypass.

I was not after creating a vacuum within the engine Martin, More of a case of using a suction to remove any crank gasses I solved one problem at a time. 1. Oil within intake & laminovas 2. Creating vacuum/suction to remove gasses 3. Give the engine fresh clean air 1 + 2 were solved easily by using brake vacuum pump No connection to inlet And suction from vacuum 3. was the biggest issue which would not work with a airfilter with the continuous suction from pump would simply not allow filtered air in to engine through the cam cover exit, I also think this would be the case even when the cam cover pipe would be connected to inlet between TB and the filter as there seen to be suction all the time from there Thoughts are appreciated Martin

[Zoobeef]

Latest idea for Pcv system

 
That will only work when that pump has enough capacity to create a vacuum even with the manifold under pressure. I don't think it can. Vacuum pumps for crank cases are available, but tend to be a lot bigger than that small camshaft driven pump.
 
But why not use the oil return hole in the engine originally meant for the turbo oil return? Put a pipe on there like an oil dip pipe and a filter on the end, essentially just opening the crank case to atmosphere. Close the PCV system. Vent the head through the cam cover using that fancy catch tank. Or did you already cover that in one of your iterations?
 

You could even use the Noble one.
http://www.proalloy....822&id=proalloy

3 pipes to it, top one from the cam cover, one of the bottoms too the crank and the other bottom just points down out the bottom of the car. It separates the oil so it drains back to the sump.

[oakmere]

The enging only needs air at low rpm when there is no boost from the SC and the valve is open in the inlet manifold. This is because air is drawn into the inlet manifold from the crank case, so a supply of air is required. As soon as the engine produces boost the inlet manifold valve closes and crank case gasses will now try to escape through the rocker cover. That is why the closed system works because when the engine is not working hard there is no vacume produced in the pipe leading to the TB so air can be sucked into the engine. But when the engine is boosting a small amount of vacume is produced befor the TB which helps remove the gasses trying to escape. Possible solutions either put a 1 way valve on the little air filter on the rocker cover so crank gasses don't just come back out through it. Or connect the vaccume pump direct to the crank case someway. So it is removing crank gasses all the time. But the original setup works as long as you can remove the oil vapour which a goof catch tank will.

Edited by oakmere, 22 February 2015 - 09:28 AM.

[CHILL Gone DUTCH]

@ ZooBeef was going to do something similar early ideas but draining into a catch tank and emptying when required and replacing any oil used with new as there can be fuel vapours mixed in with the oil also which I don't want going back in engine

Edited by CHILL Gone DUTCH, 22 February 2015 - 09:50 AM.

[CHILL Gone DUTCH]

@ martin I now see what you getting at Do you not think that when the oem setup is is applied on SC cars that the vacuum from inlet is There constantly ?

[oakmere]

If you have got a constant vacume before the TB your air filter must be way too small or blocked. Even at full throttle you would hope there would be very little vacume or you will be loosing power.