The mushroom bit on the top

Mudpiggy · 10th December 2010, 06:17 PM

Originally Posted by isuzurover

What's all this PCV valve stuff - you are getting too advanced for an old landie

Series IIs and IIAs just had 2 open breathers, Which I think is the type DB/Lou has???

It will oil itself fast enough in use. Oiling it will actually decrease its capture efficiency for small oil droplets/dust particles.

Thanks isuzurover, that's my mistake. Everything I've ever worked on had the pcv setup, and either the mushroom breather or breather hose going to the air filter. Oiling the filter is what my grandfather always told me. He's an old timer mechanic, so perhaps ideas have changed? I'll remember to keep my filters clean and oil free from now on.

**isuzurover** · 10th December 2010, 06:44 PM

Originally Posted by Mudpiggy

Thanks isuzurover, that's my mistake. Everything I've ever worked on had the pcv setup, and either the mushroom breather or breather hose going to the air filter. Oiling the filter is what my grandfather always told me. He's an old timer mechanic, so perhaps ideas have changed? I'll remember to keep my filters clean and oil free from now on.

No biggie either way, as they will oil themselves quickly enough.

The theory behind oiling is that it will help dust partciels to stick to the wires (i.e. reduce rebound or reentrainment). While there is some truth to that, the oil will also increase the mean velocity through the mesh, resulting in a lower capture efficiency for smaller particles, and at the same time it will give larger particles a higher inertia - making them more likely to rebound.

**dullbird** · 10th December 2010, 09:46 PM

complete gaskit kit bought which I think has the O ring in it..I needed all the gaskets for the exhaust manifold to go back on anyway..and the rubber seal for the rocker has seen better days.

looking forward to putting all the bits back on the engine.

**JDNSW** · 11th December 2010, 05:49 AM

Originally Posted by isuzurover

No biggie either way, as they will oil themselves quickly enough.

The theory behind oiling is that it will help dust partciels to stick to the wires (i.e. reduce rebound or reentrainment). While there is some truth to that, the oil will also increase the mean velocity through the mesh, resulting in a lower capture efficiency for smaller particles, and at the same time it will give larger particles a higher inertia - making them more likely to rebound.

I do not think that the air velocity through the breathers is very high anyway, so this effect will be pretty small.

John

**isuzurover** · 11th December 2010, 04:18 PM

Originally Posted by JDNSW

I do not think that the air velocity through the breathers is very high anyway, so this effect will be pretty small.

John

Doesn't need to be high. Filters usually operate at <<1m/s. Even a change from 0.1 to 0.11 m/s will affect things.

**numpty** · 11th December 2010, 06:11 PM

Originally Posted by dullbird

complete gaskit kit bought which I think has the O ring in it..I needed all the gaskets for the exhaust manifold to go back on anyway..and the rubber seal for the rocker has seen better days.

looking forward to putting all the bits back on the engine.

Make sure you have brass nuts for the exhaust manifold Lou, as they wont seize on the studs.

**dullbird** · 11th December 2010, 06:59 PM

Originally Posted by numpty

Make sure you have brass nuts for the exhaust manifold Lou, as they wont seize on the studs.

Did brass nuts come originally? if so I will have them as everything taken off was going to be put back on.

otherwise where do I get them from? in saying that though the ones we took off were not seized.

drifter · 11th December 2010, 07:09 PM

Originally Posted by dullbird

Did brass nuts come originally? if so I will have them as everything taken off was going to be put back on.

otherwise where do I get them from? in saying that though the ones we took off were not seized.

$1.65 each - part PL132 (Brass Nuts) from fwd.com.au

**dullbird** · 11th December 2010, 07:13 PM

how many do I need...save me having to go out and count

**Blknight.aus** · 11th December 2010, 07:17 PM

no they wont have them as OEM...

My list of magic goops that go into the grab box

coppercoat antisiezing compound. This is usually used on exhaust nuts
molybdenum antisiezing grease. great for wheel nuts, radiator mounting bolts and chassis/body bolts.
Teflon Spray Dry lube. Great for door locks and linkages
loctite 567, perfect for sump plugs and the like
loctite 510/515 a sealant for things like drive flanges
loctite #3, aka hylomar #3, aka non hardening gasket sealant #3 aka Permatex #3 and AKA "that brown goopy crap that leaks everywhere if you tip it over even if the bottle has its lid on" good for pretty much everthing that has a paper/cork gasket ESP cooling system stuff.
Loctite 243 (for bolts you dont want to come loose easily and for reusing locknuts)
loctite 262 (for bolts you seriously dont want coming loose untill you want them too
ATV gasket sealstic in Red, Blue and Grey (for stuff exposed to Fuel, oil and general stuff respectively)

IF you're getting into doing gearboxes and the like a tube of 620 is also worth looking at.

I'm looking at getting my local tool shop to set me up some loctite kits if you're interested.

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