Board logo

xflow oil canister full after few miles.
HPDxxx - 31/3/14 at 07:21 AM

Hello guys.
i have a problem with westfield Se 1700cc xflow.
i have installed new oil sump and take oil level to max.
at the first test, after few miles, canister was full and oil going out on engine bay.

i have modify sump and installed a "roof" and baffle for contain oil.. with this mod situation improve and for street use i haven't problem.

but at the first track-day after some laps.. oil coming out again!
oil canister full and leak out in engine bay.


DW100 - 31/3/14 at 08:16 AM

Change the routing of the pipes, the pipe from the block needs to go into the valve cover ( so any oil pushed up the pipe returns to the sump) and then a separate pipe from valve cover to the catch tank and the catch tank should then be vented to atmosphere.

[Edited on 31/3/14 by DW100]

Trollyjack - 31/3/14 at 08:23 AM

As DW100
from block into rocker cover then another from rocker cover to catch tank. then breather in top of catch tank.
you must have a breather to atmosphere

HPDxxx - 31/3/14 at 09:21 AM

there is a breather to atmosphere, is the second plug on the canister.

thanks for the input about route of the pipe!

rusty nuts - 31/3/14 at 07:38 PM

Have you got a standard fuel pump or blanking plate? If using a blanking plate is it the oil deflector type? My breather uses a block adaptor plumbed directly into the oil catch tank, before using the deflector I had problems , dropping the oil level to halfway between minimum and maximum helped hugely.

HPDxxx - 1/4/14 at 08:52 AM

quote:
Originally posted by rusty nuts
Have you got a standard fuel pump or blanking plate? If using a blanking plate is it the oil deflector type? My breather uses a block adaptor plumbed directly into the oil catch tank, before using the deflector I had problems , dropping the oil level to halfway between minimum and maximum helped hugely.

this is actual setup with in-line fuel pump.





rusty nuts - 1/4/14 at 07:00 PM

Has the blanking plate in the second photo got a "tongue" on its inner side? If not it might be worth fitting one?

MikeRJ - 1/4/14 at 08:23 PM

This is what the proper blanking plates look like. The "tongue" stops oil from the cam getting thrown straight up the breather hole.


HPDxxx - 2/4/14 at 07:33 AM


thanks for photo! no, the plate on my engine is flat!

so.. i must install a plate with "tongue" inside... and connect breather pipe from short block to valve cover.
then.. install a second pipe from valve cover to canister.

steve m - 2/4/14 at 07:51 AM

I made my plate (cheapskate) and had similar problems, but then just added a piece of alui that curved over the camshaft
and pop riveted it onto the alui plate
Seems to of worked

My pipework goes from the breather to a "T" piece, an then onto the can, but i do plan on changing it to breather to rocker cover and another pipe from rocker to can

Steve

[Edited on 2/4/14 by steve m]

HPDxxx - 29/4/14 at 09:14 AM

blanking plates with "tongue" arrived and installed.
after some miles oil blow on engine bay... but canister is empty!
i think coming out from pipe of oil level stick
it is possible the cause is the hight pressure on crankcase?
it's possible decrese this pressure?
thanks

HPDxxx - 5/5/14 at 08:54 AM

quote:
Originally posted by HPDxxx
it is possible the cause is the hight pressure on crankcase?
it's possible decrese this pressure?
thanks

some input please?

rusty nuts - 5/5/14 at 03:10 PM

It's possible the crankcase is pressurising due to worn pistons/rings/bores but have you checked or replaced the oil filler cap? My car has the breather take off piped directly to the oil catch tank with a breather filter on the outlet side of the catch tank and uses a standard oil filler cap. A compression test or better still and cylinder leakage test would help with diagnosis. Another thing that could be a possible cause is the oil grade, I use a good 20/50 oil in mine

HPDxxx - 5/5/14 at 03:29 PM

quote:
Originally posted by rusty nuts
It's possible the crankcase is pressurising due to worn pistons/rings/bores but have you checked or replaced the oil filler cap? My car has the breather take off piped directly to the oil catch tank with a breather filter on the outlet side of the catch tank and uses a standard oil filler cap. A compression test or better still and cylinder leakage test would help with diagnosis. Another thing that could be a possible cause is the oil grade, I use a good 20/50 oil in mine

i think engine condition is very good, engine was completely rebuild by previus owner with 1700cc increase, port&polish head, twin 40 webber etc...
when i had changed gasket and sump all internals look in good condition without signs of wear.
there isn't oil in exhaust gas, so in my opinion rings/piston/bore are in good condition, all cilinder fire up corretly.
oil grade is a good quality 15W-40, oil filler cap is also standard (see photos in my first post).

Neb - 6/5/14 at 11:51 AM

We have a similar issue with our Escort that runs the same oil filler car and rocker cover as you.
The previous engine (xlfow) did the same but not as badly although that ran a standard cap and rocker cover.

We have drilled the hole in the breather cap slightly larger and added another vent hole in it too. Not used it yet but competing on the Middlewick stages this weekend so will see if it works. If you blow through a standard cap and the aftermarket ones there is quite a difference with the standard one letting much more air out.

Xlfows like a large bore hose for their breathers by the way. Your breather bottle looks a little low too.

My intention when the old engine goes in the kit car is to use a standard rocker cover and cut the filler location off and re-fit it to the rear of the engine. i'm not convinced that the aftermarket chrome rocker covers like the one you have fitted (and the same as the current Escort one) are much kop to let the engines breath. The breather tank will go on the scuttle/bulkhead.