300Tdi P gasket replacement in (almost) real time. Part 4

[@Muttley600]

Thanks Mike, I've watched your videos on the P gasket replacement & my job went very smoothly thanks to your tips, I really appreciated you taking the time to do these videos. I know it's not a two minute job

[@BritannicaRestorations]

Great to hear!

Hi Mike 🤔 thanks again for sharing this video update 🤔 👍👍👍🇬🇧🇬🇧🇬🇧

[@terryatkinson899]

Do you talk to yourself as you do this work? My mam used to have full conversations with herself, you'd just see the lips moving. We used to laugh. These videos are priceless for anyone attempting this kind of mechanical surgery, I love it. We are all abit mad in our own way haha.

[@malcolmyoung7866]

I have no fiends...who else am I going to talk to...Think Rupert is the camera racoon so maybe just talking to 'cameracoon?'

[@BritannicaRestorations]

Damn! Busted!

[@andrewk6844]

the long bolt at the bottom . Ive always found the nut on the block size. Talking to your self is good , i do it all the time . Its just thinking out loud

[@gibsonethirty2836]

G'Day Mike. Matey every time you have worked on the P gasket in this series, some bugger keeps ringing your door bell! :D

[@347lbs]

At least your ghost is tidying up your sockets and putting them back on your bench. My ghost waits for me to drop a socket usually ¼" and catches it before it hits the ground, she will then hide it on one of the dark ledges around the engine. She has lost me many sockets with her weird sense of humour.

[@BritannicaRestorations]

Many, many years ago I worked on a VW golf diesel head gasket and lost a hose clip on a vertical pipe in front of the motor - looked high and low When I came to turn the motor by hand to do the valves I found it! When fitting the head, I knocked it into the cylinder! So that is why I fasten the clamps back onto the hose when removing them!

[@347lbs]

​@@BritannicaRestorations How many times did you walk around the block before taking the head back off?

[@BritannicaRestorations]

Quite a few and I was working in the street!

[@caleblrt8200]

Hi Mike, have you tried the Quinton Hazell 300Tdi water pumps?

[@BritannicaRestorations]

Yes they were good

[@caleblrt8200]

Britannica Restorations Ltd Thanks! I heard they went into receivership but back up and running now.

[@Extreme4wdNZ]

Hi Mike, like you I always use an anti-seize compound when replacing the water pumps on my V8 but I always have a nagging doubt that I am over tightening the bolts when adhering to the recommended torque settings. I have tried tightening a bolt dry and then after the addition of the anti-seize compound and it certainly seems to tighten further. Which is correct when not stated in the manual? What are your thoughts? Fancy doing a little experiment? Thanks Ivor.

[@BritannicaRestorations]

25 Nm dry should be 25 Nm 'wet' in my opinion - I know it turns more as there is less friction, but the tension should be the same, but I could be wrong Looking at an article online it states.. 'Use 75% of the specified torque value for plated fasteners. Use 85% of the specified torque value for lubricated fasteners.' So with that in mind 85% of 25 Nm is 21.25Nm Hmm, seems a bit low - especially on rotating parts and 75% of 25 Nm is 18.75Nm I guess by this logic, then a lubricated, zinc plated bolt would be just finger tight! (But that was from a US site and look what happened to the space shuttles..)

[@Extreme4wdNZ]

As you know, with the V8's been all aluminum torque settings are pretty critical and it is very easy to strip a thread. There have been quite a few occasions when I have been torquing small screws and thought "no further" before reaching the stated torque setting. I need to investigate further, see what I find. I believe that the seal that failed on the space shuttle came from Britpart, but cost was very reasonable.

[@BritannicaRestorations]

Lol!

[@Extreme4wdNZ]

Hi Mike, looks like I have been doing it incorrectly for some time and (as an approximate guide) should have been using 75% of the stated torque figure when using anti-seize compounds. This ties in with my thoughts that I have at times been over tightening some fasteners. You may find the attached link interesting. www.engineersedge.com/material_science/antiseize_compound_application_review_13389.htm Thanks, Ivor

[@ianhellyer1473]

Talk about sealant. I found silastic /RTV worms about 3 to 4 inches long in my Disco heater matrix. Later, I found another in the bottom of the block, when the core plugs needed replacement and another when the P gasket needed replacement. I replaced the front core plug at the same time. A while later, a new head was installed. I think someone must have had shares in the RTV manufacturer

[@BritannicaRestorations]

I don't think folk understand that what you see on the outside is probably worse on the inside of a joint!!

[@malcolmyoung7866]

'It was on 25nm not 25lbs...wasn't it..?'

[@BritannicaRestorations]

I hate torque wrenches here that are designed for foot lbs, but on the back they convert to Nm which most of the civilized world uses now, so the scale for Nm is not in full numbers - i.e. 25 Ft lbs is 33.9 Nm, so you have to be careful!