Guest Posted October 26, 2002 Posted October 26, 2002 Greetings all, I am currently stripping all the old hoses/exhaust/fuel system from my 1994 2.0l Zetec. It's now looking completely naked ( ) apart from one 'attachment' that I cannot identify (& therefore am reluctant to remove at present). On the left-hand side of the engine (as seen from driver's seat if engine is in westie ), towards the flywheel end, there is a (a quite large) metal housing bolted to the crank case with a metal pipe coming from it. This pipe runs up & towards the flywheel end where it passes under the coil pack (being attached with a bracket) and emerges just to the RHS of it. A rubber hose T-piece is connected to the end of the pipe. Any ideas what it is? I cannot see any residue so I'm not sure if it's coolant or air ( ?? ) or whether I should unbolt the metal housing. (I've read the Haynes manual a million times and cannot find it anywhere ) The housing is shaped a little like this: /-------\ / /------ | /------- pipe emerges from near the crank | O / case about here |-----/ Help appreciated. Thanks, - Dan Quote
Blatman Posted October 26, 2002 Posted October 26, 2002 Oooohhhh......... If you decide to have a look around the rest of the Zetecinside website, and see this link: www.zx2performance.com/ BEWARE......It opend up a load of annoying pop-ups, and actually has nothing to do with tuning Zetecs (I really HATE blind links). Some of the pop-ups were quite slow, even on broadband, so if you're on a dial up, it'll be well annoying.............. This has been a public service anouncement. Quote
Guest Posted October 26, 2002 Posted October 26, 2002 Wooaaahhhhhh! (a la Matrix style) That's where mine is bolted but it's not quite that big or quite that shape... Anyway, go on then, what is it? Quote
Blatman Posted October 26, 2002 Posted October 26, 2002 Looks like a really big breather to me, BUT, it's soooo big, and with some sort of fitting on it, that it may have another purpose. I haven't come up with a definitive answer yet, but I've got about 17 searches going on at the moment. If I find it, I'll put it up................... Quote
Guest Posted October 26, 2002 Posted October 26, 2002 Thanks a lot. I'd really like to be able to remove it since the pipe doesn't look too good and the hoses at the other end were viscously chopped off! (as was everything else, including the wiring - good job I didn't need it) Quote
PeteBishop Posted October 26, 2002 Posted October 26, 2002 Dan Its just a block breather unbolt it and file it in the bin,make up a nice alloy plate to blank off the hole make sure you uas a gasket on it as the crank throws a lot of oil at it.just use the breather in the cam cover. Peter Quote
Blatman Posted October 26, 2002 Posted October 26, 2002 Er........I don't think you should seal the crank case. You run the risk of forcing pressured gas up into the combustion chamber. It was designed by Ford to breathe. If it didn't need to breathe, they wouldn't have fitted a breather......... I'd be asking Dunnell or Raceline what they do/think/advise.... Quote
PeteBishop Posted October 26, 2002 Posted October 26, 2002 I have run 2 Zetecs like this one 205 BHP and the current one 215 Bhp both revving to 8000 RPM and i have had no problems with crankcase pressure it breathes through the oil drains in the head.If you want to use it as a breather it will have to be baffled to prevent oil being thrown out and into the catch tank. Peter. Quote
Blatman Posted October 26, 2002 Posted October 26, 2002 Fair enough. I'd be concerned that having air running up an oil drain would prevent some of that drainage though. I realise I'm being picky, and I'll be the first to admit I have no expertise with Zetecs, but there seems to be a conflict between gasses escaping upwards, whilst oil is trying to drain back to the sump. Your experience suggests that there isn't enough pressure in the crank case to prevent oil drainage, BUT, if Ford R&D decided to fit breather, I'd tend to trust them, especially as in standard form it'll be revving less, and producing less power/heat/crank case pressure etc. Quote
steppenwolf Posted October 26, 2002 Posted October 26, 2002 My temptation would be to NOT remove it. Westfield Tech. Support gave warnings about blowing the crank seal if pressure built up here rather than allowing 'breathing' to atmosphere. I combined mine in a 'Y' junction with the cam cover breather and lead the bottom of the 'Y' to an oil catch tank. UNDER NO CIRCUMSTANCES CONNECT THE TWO PIPES DIRECTLY TOGETHER WITHOUT A THIRD EXIT TO ATMOSPHERE!! Quote
Guest Posted October 26, 2002 Posted October 26, 2002 The cam breather is the outlet from the RHS of the (RH) cam cover just by the coil pack, right? Quote
PeteBishop Posted October 26, 2002 Posted October 26, 2002 Yes it may slow the oil drain back but the returns are big.The standard breather is conected to the inlet manifold and has at least one valve in it to control when it scavanges from the crankcase(all to do with emissions) if you were to leave the std tin box on there you would have to do somthing with the valve in it peter Quote
Guest Posted October 26, 2002 Posted October 26, 2002 Following the comment about emissions, I've managed to find the part in the Haynes manual (in Emissions control systems, duh! ) that deals with the item under discussion. Thanks all. Quote
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