Dowty Numptiness

[Blokko]

Having trawled the archives I want to go for fitting a Dowty seal on the sump plug of my 2002 1.8k to try to cure an oil leak and I just want to make sure I get the right size before I order from Fleabay.

 

The washer I took off when I did the last oil change has an inside diameter of 15mm and an outside diameter of 19mm. There is a link in one of the Tech Talk threads to ½ “ BSP Dowty washers - here.

 

 

Would this be suitable, or should I be looking for a metric equivalent (M16???)

 

Also, whilst I'm at it I guess I could get a Dowty seal for the rad bleed screw at the same time. Unlike the sump plug (where I believe there is a shoulder over which the washer needs to fit), I'm guessing I could just go for an M10 (bleed screw has a diameter of 9mm).

[Stationary M25 Traveller]

No shoulder on my sump or plug Steve.

 

Just get a dowty washer that fits over the sump plug thread without undue force or too much clearance.

 

You can get them cheap at many car spares shops or hydraulic hose places like Pirtek

[Stationary M25 Traveller]

Recall the original sump plug on the k-series is M12. I increased mine to M14 when the aluminium thread pulled out a good few years ago. Now just fitted a steel thread insert to make sure it doesn't happen again !

 

If yours is still M12 - you don't want a washer (of any sort) 15 or 16mm inside diameter !!

[6speedmanual]

Or...

Hylomar Blue. Every time.

Wipe excess oil off the plug threads. Wipe in blue to the thread depth and screw in, even if the female thread is wet with oil.

Done it dozens of times on many different cars.

Never had a leaking, seized or stripped plug.

 

Peter

[Blokko]

Pirtek came good - branch not far from where I work. Spent ages on Sat am trying to get them from hardware shops and motor factors, without any joy.

 

Will it do any harm to fit the Dowty seal in combination with Hylomar Blue?

 

Edited by - Blokko on 30 Oct 2013 12:21:58

[Stationary M25 Traveller]

Not a problem. Only need a light smear of HB