breather pipe

[eoin1981]

is the breather pipe from the block to the cam box needed on a 1600 8 valve rally engine?
mate bought a engine a while ago for a mk2 escort and the block has the pipe but the cam box doesnt so theres nowhere to fit the pipe to on the cam box

[jimbob-mcgrew]

a pipe should come out of the block either into a canister and upto the airbox or the other one straight from the block into the cam carrier like u said, then re-circulate up out thru the cam cover, (8v vauxhalls anyway).

you could prob get away with sticking a small breather filter straight onto the pipe, but keep an eye on it, if oil is getting kicked up out of the filter, youll need to put some sort of secondary bottle or canister before the filter to act as a small reservoir to catch the oil. i could be chatting aload of fart tho.

[eoin1981]

a pipe should come out of the block either into a canister and upto the airbox or the other one straight from the block into the cam carrier like u said, then re-circulate up out thru the cam cover, (8v vauxhalls anyway).

you could prob get away with sticking a small breather filter straight onto the pipe, but keep an eye on it, if oil is getting kicked up out of the filter, youll need to put some sort of secondary bottle or canister before the filter to act as a small reservoir to catch the oil. i could be chatting aload of fart tho.
thanks,but can i do away with the pipe from the block alltogether

[garyc]

No. it needs to be vented.

[eoin1981]

what do i have to do so as there is no breather hole on my cam box for the pipe from the block

[garyc]

stick a rubber bube into a coke can.

[eoin1981]

thought i read on hear in a old post that chris astley when he was rallying just blocked off the pipe from the block with no issues on a group a nova

[craig green]

Blocking it off will cause the crankcase pressure to rise & shag the bottom end.

Just get a cam/rocker cover with the correct breather port on it is the logical answer.

[jimbob-mcgrew]

^ yeh u deffo need it, youll get big pressure build up without it and something will give. then oil will be like spill spill spill, were going to blackpool beach.

[eoin1981]

thanks for all the answers so my only option really isto swap the cam box?
is it a big job dont really want to disturbe anything

[Pistol Pete]

Cam box, swap one for another. Easy. Change the gasket at the same time.

[eoin1981]

could i just rig up an oil catch tank would that work?

[eoin1981]

bump for the oil catch tank question

[Pistol Pete]

Yes.

[eoin1981]

thanks pete but what about the outlet pipe on the oil cooler do i just leave it with nothing attached?

[jimbob-mcgrew]

you can get away without anything connected to the pipe, but best off givving it some sort of filter, it'll keep your engine oil cleaner and will lessen the chances of condensation/dew settling in with the oil. you can buy specific breather filters for that very thing, but there way too expensive if u ask me, you might get away with bodging something cheap yourself, like a square of easy-breath foam gaffa taped round the end of the pipe for example. it might sound a bit bodge, but im sure i put one of those small see-thru paper fuel filters on the end of one of these pipes years ago, in the direction of flow to filter the air, from what i can remember it did the business.