7 replies to this topic

[mininut37]

Hi all,

I've got a 1380 with a 7 port injection setup. The engine has the individual breather filters on the timing cover and rocker cover and these vent to atmosphere. This creates quite a smell inside the car and I'm wondering what I can do to improve it.

I get that they are needed as the engine is producing 120bhp. If it were a carb car I'd be looking to route the pipework back into the carbs, but not an option on an injection setup I don't think.

What have others done in this situation?

Bit of research and it looks like I could fit an underwing catch can, but I'd have to let the return line vent under the car

I could just pipe the breathers to behind the engine, under the car to get the gasses away from the bulkhead where I guess they're coming through into the cabin

Any other ideas?

[sonikk4]

I will be in a similar position when i install my 7 Port engine into Paddy at sometime in the future.

 

However i'm going to build a bespoke breather / catch can to fit on the inner wing. As my car is a non servo clubby i have plenty of room to make and fit something

[Spider]

You should be able to do a PCV set up, using a PCV Valve from anoher engine. The Toyota Corolla one is popular, has a 13 mm inlet and a 10 mm outlet. Plump the hose in to that, then the outlet plumb in to one of the manifolds, downstream of the butterfly. Plug up the 'breather' on the rocker cover (which was originally intended as an air inlet) and fit a Filtered Oil Filler Cap.

Crankcase ventilation is important and so often overlooked, not just to remove smell and fumes but also extend the life of the engine.

[Java_Green]

You should be able to do a PCV set up, using a PCV Valve from anoher engine. The Toyota Corolla one is popular, has a 13 mm inlet and a 10 mm outlet. Plump the hose in to that, then the outlet plumb in to one of the manifolds, downstream of the butterfly. Plug up the 'breather' on the rocker cover (which was originally intended as an air inlet) and fit a Filtered Oil Filler Cap.

Crankcase ventilation is important and so often overlooked, not just to remove smell and fumes but also extend the life of the engine.

Why don't have both ventilations (crank case and timing cover) brought together with a T-connection before the PCV?

[Midas Mk1]

Id vent into a catch can, then catch can to a vacuum port on the 7 port if there is one? That way your trapping oil, just burning the vapour off. Open breathers on a road car can stink! Closed breathing also helps reduce oil leaks. 

[DeadSquare]

It is all those oily fumes that stop the front subframe rusting.

 

Pipe them to the rear subframe.

[Spider]

 

You should be able to do a PCV set up, using a PCV Valve from anoher engine. The Toyota Corolla one is popular, has a 13 mm inlet and a 10 mm outlet. Plump the hose in to that, then the outlet plumb in to one of the manifolds, downstream of the butterfly. Plug up the 'breather' on the rocker cover (which was originally intended as an air inlet) and fit a Filtered Oil Filler Cap.

Crankcase ventilation is important and so often overlooked, not just to remove smell and fumes but also extend the life of the engine.

Why don't have both ventilations (crank case and timing cover) brought together with a T-connection before the PCV?

 

 

It's a flow through system, need to let some air in to the crankcase.

[Java_Green]

Vented oil cap. If that is not enough, a vented rocker cover.