Sump plug

[VIN18M]

My sump plug is leaking, I know it probably just needs the washer replaced but I figure it's a good excuse to get a magnetic plug.
Does anyone know what thread size the 4g93 sump plug is?
Also is anyone running a magnet in theirs?

 

[GeoKez]

I did with the 4g93. Always a talking point at oil change time. Normally just covered in a grey 'mud'.

Never really did get the point of them. If it didn't fit through the strainer and stop in the filter, you no doubt have some fairly serious issues.

 

[VIN18M]

Yeah I was thinking the same thing. Same goes for magnets on oil filters I guess? Surely the filter is designed well enough to grab and hold any debris...?

 

[4piknup]

Sorry guys. The filters are crap. They will be in full bypass by 5000rpm and causing a 20psi pressure drop.
So your gauge says 80psi but the first main bearing is seeing only 60psi.
There is a big kiggly write up about it on his site. Im thinking of twin z9 or z30 just to offer some filtering at full noise

 

[GeoKez]

Understand that, but you think a magnetic sump plug somehow compensates for that? Or you just pointing out the stock style, shitty little filters are crap.

 

[4piknup]

Yeah sorry. Was off topic.
Nothing wrong with magnetic sump plugs.
I run one in the bike. They are a good tell tale.

Im also a big believer in oil sampling. I have a heap of prepaid ones. Just sample oil and drop pack in the post. Report gets emailed back in a few days.

 

[GeoKez]

Im also a big believer in oil sampling. I have a heap of prepaid ones. Just sample oil and drop pack in the post. Report gets emailed back in a few days.

Now that's an excellent idea!

I could imagine my report:

Dear Mr Watts,

These are your oil sample results :-

• 22.5% = Forged alumimium (We assume this to be whats left of your pistons)
• 16.8% = Cast iron (Parts of your block)
• 38.5% = H20
• 8.06% = Propylene Glyco
• 4.03% = Cigarette Ash (We advise you not smoke while assembling engines)
• 10.1% = Oil

Please be sure to sends us more samples, the lads in the lab haven't had that much of a laugh in ages.

Kind regards,
Your oil sampling place.

 

[evo-gsr]

Nice analysis George.