Just thought I'd share how the later Renault Turbo engines are set up. The early turbo engines have a breather with two ports - and some are nothing more than a cap, others have the gauze in them like the DeLorean one The smaller hose goes again to a deliberate "leak" of approx 1/8" diameter straight into the intake manfiold but crucially via a non return valve. The larger vent hose goes via a catch tank which has a drain hose dropping back into the crank case, and a breather to the "clean" side of the air filter upstream of the turbo. The catch tanks were notorious for splitting and later engines had a single large breather hose which was plumbed very simply into the clean side of the air filter upstream of the turbo. This is how I set up my single turbo DeLorean engines. Rich Johnstone's twin turbo (an Island kit recycled onto a Renault 2.5 engine) has its air filters directly on the turbos, so we used a standard DeLorean breather and plumbed it into the intake manifold via a non return valve, and put a breather filter on the large barb. This means it only vents crank case fumes to the air when under boost. Experience showed that without any form of recirculation, it would chuck out the most when on overrun immediately after lifting off. Martin ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/