updates to Ryco catch cans

Frank P, I have used the Provent and now use the Isuzu factory catch can, cheaper for the initial buy, filters are a lot cheaper and by design, I think a better item. Isuzu Oil PCV Separator, Part number: 8-97324682-1
Filter part number: 8-98002346-0

Hi Swampy

Strange that you mention the 79 series V8 Landcruisers. I fitted a catch can to my V8 and after 4500 kms, the turbo failed at 48,000 kms.
At the time I could not get a Toyota Turbo and fitted a Garret turbo. Garret asked me if I had a catch can fitted and advised if I did not remove the catch can they would be selling me another turbo in 5,000 kms.

I have many friends with V8 79 series that have catch cans and done many more kms than mine without any problems.
Garret turbo advised that they take away all the oil mist that is required to lubricate the turbo seals.

Hi
slopokin
U tube thread on a v8 cruiser that had significant issues and then he discovered the updated catch can RCC351

Lubrication to cylinder heads valves should be more of a concern than lube from mist for the turbo . An engine turbo is pressure fed . Garret should /would be concerned over the crank case breathing and if there was any restriction and any excessive suction / pressure on the turbo shaft seals.

Yep strange as the turbo bearings are supplied with oil via the engines lubrication system. As someone else wrote more about sump pressures one would think. Turbo bearings are feed oil, the bearing s don't have normal oil seals as the turbo spins so fast, they have seals that are similar to piston compression rings and as such do not prevent all oil passing them. Excess oil that manages to get past the seals is slung off and drains into the vehicles sump. The sealing also relies on a positive pressure on one side of the seal and a negative pressure on the other, any build up of pressure in the sump can cause the seals to leak. Normally you won't get a build up of pressure in the sump but if you fit a catch can and the filter becomes restricted due to clogging then you will get pressure build up due to restricted flow which is why a good catch can has a valve to relieve the pressure but again that is questionable as you have to have pressure for the valve to operate which would not be there if the catch can was not fitted. Turbo manufactures say if your turbo is leaking oil first thing to check is for pressure build up in the sump.

Personally I don't like catch cans, the oil is not the issue and has been feed into engine intakes since at least the 60 's. It is the carbon from the EGR that is the problem, catch can may remove some of the oil but it won't remove it all so you will still get a build up. One should also consider the carbon from the EGR which is abrasive, you have air cleaners on engines to stop dust and dirt entering the engine as it is abrasive, but then you have the EGR systems feeding gritty exhaust rubbish back in to the engine to meet anti pollution requirements.

You learn by your mistakes .
Have PV200 fitted to my 2013 D Max and done around 16k and to date no problems.

Hi Workhorse,

Not being familiar with the Ryco Catch Can, I have a question. Where does this relief valve line drain to? Wouldn’t it just leave an oily patch wherever it drains to?

Macca.