Is it worth fitting one to the 156? If so which oil catch can do you recommend and can anyone tell me where and hot I fit one? Thanks.
Why fit a Catch can? Just keep the oil clean & Change the oil/filter more regularly before the service data suggests in the book catch cans were fitted to collect the dirty oil mist & residues but they were I believe developed for the race track fraternity & then marketed for general use so if they are needed why haven't all HPT cars have them fitted I always say Filthy oil=A filthy Engine & the answer is on the end of a dipstick
The inlet valves are known to get gunged up on all direct injection engines & a lot of modern cars in general so you couldn't say its is down to the Engine not having an oil catch can its the way they are designed to perform plus the amount of heat generated through the combustion process also contributes to the burning & carbon build up in the valve portsWhether the oil is fresh and clean or dirty what gets collected in the catch can, I believe, is the 'blow by' (gases, oil & fuel) which is ventilated by the PCV and recirculated through the cold side of the turbo, on into the inter-cooler, and into the inlet manifold via the throttle body. Some normal 'burn off' will occur with this gunk but I've no doubt it also contributes to carbon build up on the backs of inlet valves and it can't be great for the turbo, inter-cooler and throttle body either I recon.
From the videos I've watched these catch cans seem to trap a lot of oily mess or gunk so I'll install one (or two) and see how I get on. I'll report back in time with what I find
Ok but if that's the case why do so many direct injection petrol engines have this problem of carbon deposits on the inlet valves that leads to issues necessitating them getting walnut blasted or cleaned in other ways?The inlet valves are known to get gunged up on all direct injection engines & a lot of modern cars in general so you couldn't say its is down to the Engine not having an oil catch can its the way they are designed to perform plus the amount of heat generated through the combustion process also contributes to the burning & carbon build up in the valve ports