Hi All,

Normally the PCV valve in theblock is put intot the inlet manifold.

I'm running twin webbers, so is it OK to connect this to the Oil filler cap? or not?

I tried conneting it to a catch tank alone

but the catch tank seem to fill very quickly, or do i have a bigger problem?

Many thanks

I would still do the catch tank thing, was your catch tank above the highest point of the engine. I wouldn't want to re feed emulsified oil back into the engine imho.

Need to find out why it's filling up the old catch tank so quickly. Do you have any pictures?

Cheers

Rich

quote:

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Originally posted by RichardK
I would still do the catch tank thing, was your catch tank above the highest point of the engine. I wouldn't want to re feed emulsified oil back into the engine imho.

Need to find out why it's filling up the old catch tank so quickly. Do you have any pictures?

Cheers

Rich

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cam shaft spray bar, but anywhere higher than the rocker cover would be fine imho

Cheers

Rich



The big bore pipe going to the top left side of the bottle goes to where the pcv valve used to be. I know mines a pinto but the same principles apply.

Cheers

Rich

[Edited on 2/5/09 by RichardK]

Just had a look at your picture archive and are you still using the pcv valve housing but removed the internals, because pcv valves use vacuum to open the valve and if its not connected to the inlet manifold you won't have any vacuum so it would build up pressure.

But as you aren't suffering from oil blowing out of the dip stick etc you must have removed them so should be ok.

By the look of where your catch tank was, get some longer pipe and move it higher and you should ok.

Cheers

Rich

quote:

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Originally posted by RichardK
Just had a look at your picture archive and are you still using the pcv valve housing but removed the internals, because pcv valves use vacuum to open the valve and if its not connected to the inlet manifold you won't have any vacuum so it would build up pressure.

But as you aren't suffering from oil blowing out of the dip stick etc you must have removed them so should be ok.

By the look of where your catch tank was, get some longer pipe and move it higher and you should ok.

Cheers

Rich

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Other side of the bottle same height as the other can just see it if you look carefully, the pipe at the bottom is just a drain with a clipped bolt up it.

Cheers

Rich



[Edited on 2/5/09 by RichardK]

quote:

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Originally posted by RichardK
Other side of the bottle same height as the other can just see it if you look carefully, the pipe at the bottom is just a drain with a clipped bolt up it.

Cheers

Rich



[Edited on 2/5/09 by RichardK]

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I connected the crankase breather to the rocker cover by brazing in a pipe fitting half way along, I then connected another breather from the neck of the oil filler to the catch tank and fitted a baffle under it.
It still filled the catch tank fairly quickly, seems to be something crossflows are known for.I dont think the height of the catch tank will make a big difference as I tried mine on the bulkhead and also on the footwell and it didnt make any difference.
I eventually solved it by fitting a Zetec.
Paul.

quote:

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I eventually solved it by fitting a Zetec.
Paul.

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Got exactly the same problem (among others) with my crossflow, seems to be super critical on oil volume. Without a filter change it will only take 2.75 litres of oil before it starts to spit it out into the catch tank. Put 3 litres in and it immediately puts a quarter of a litre in the catch tank.