Oil surge: R400 Duratec with wet sump

John, I have just seen your post, my car does exactly the same thing. Would you post details of any fix if possible. Thanks Tony.

Willie, the 'fix' is a perfectly acceptable way of preventing this problem. The ultimate 'fix' is easy enough as Millwoods suggested in the first place, ie, fitting a dry sump. But that is costly and I can well understand John's desire to keep the cost down, especially if he just does the odd track day here and there. There is absolutely no point him spending 100's of pounds trying to fix a very minor problem when it can be easily and cheaply circumvented by the suggested method of re-routing the crankcase breather. Simplicity is the key here. Brent (aka Arfur Nayo) Toyota power It's the future!

Putting the holes in the sump top "lid" plate thing in a better place would likely cost less and solve the surge...not just stop the symptoms. But, I haven't seen the particular application so I can't say for definite. Just I'd rather have my oil around the pickup instead of floating about above some plate getting crank windage and pushed up breathers. Just my uninformed opinion of course. Willie

In many respects I agree with you. Personally, I don't like the Raceline wet sump as fitted to the Duratec, for some of the reasons you mention as it happens. Nevertheless, if cost is a factor then there are cheaper/easier ways than going dry sump, of resolving John's particular problem whilst still keeping a system that works reasonably well for most people. Let's face it, this breather pipe is only routed to the inlet plenum for the sake of emissions and, apart from Roger Ford, just how many 7 owners give a flying f*** about environmental issues where the 7 is concerned? And trust me on this, putting the holes in a different location categorically does not resolve the problem. Don't ask me how I know this. Brent (aka Arfur Nayo) Toyota power It's the future! Edited by - Brent Chiswick on 4 Dec 2008 08:30:46

So Brent, how do you know this??? I'll get my coat..

you could always try beating a different tune \" class=\"smiley\" /> yawn chomp chomp chomp If It aint yellow, wonky and wobbly................

There are many things I could suggest you should try Dave, but few of them are printable on here!\" class=\"smiley\" /> Brent (aka Arfur Nayo) Toyota power It's the future!

quote:only routed to the inlet plenum for the sake of emissions

Really?

quote:putting the holes in a different location categorically does not resolve the problem

Really? So if there was no top plate at all, and the oil could quickly get down into the individual chambers etc...would this not change things? So surely a different top plate would be better. The oil needs to get below the plate quicker than it currently does. That means the holes don't work correctly, so I disagree with you. Willie

Willie, I am not going to launch into a lengthy diatribe here about the positioning of the holes in the plate. I am speaking from personal experience with 3 of my own engines and 2 others I have seen and discussed at great length with the owners, one of whom has forgotten more about Duratecs than most will ever know. If you choose to disagree with me and them, that is your prerogative. I am merely stating known facts, not hearsay or supposition. Yes, if the plate is removed, you have a different set of circumstances prevailing. That much is obvious. I understood we were discussing the notion of siting the same holes elsewhere and my reply is based on that premise alone - not adding holes or removing the plate altogether. As for the crankcase breather pipe, why else would it be routed to the inlet plenum? Brent (aka Arfur Nayo) Toyota power It's the future!