jedi0_3

Evening all.
The oil pressure switch hole in my cvh block is damaged in that half of the collar that the switch screws into has cracked off.
As I am using after market oil pressure gauge I have a t-piece screwed into said collar but when the engine is running oil is leaking from around the t-piece where it screws into the block as it's not perfectly sealed. I have put PTFE tape around the thread of the t-piece but it is still leaking.
Is there anything else I can put on the threads that may help seal it and stop the leak?
Thanks

tabetha

Loctite 5900 or 5910, about £18 a tube with about a 1/3 the amount of a hylomar tube in it!!
Pricey but the best by a long way.
tabetha

jedi0_3

What is hylomar and what makes it so special?

jedi0_3

What a dork-just realised what you meant by the Hylomer!!!
Thought it was a special ingredient at first!!!!
Halfords do the 5910 for £5.49 for 80ml.
Is there any difference between the 5900 & 5910?
Would you suggest I strip off the PTFE tape from the threads of the t-piece and replace with the Loctite or a combination of the two?
Thanks for the help, your a life saver-again!

tabetha

Rip off the ptfe, use the 5900 or 5910, leave 2-3 minutes reassemble.
The difference between 5900 and 5910 is the 5900 is a quick setting compound, less than 5 minutes, as it's main use is on production lines by car makers etc as a flange sealant.
If it doesn't cure with this I think it's surgery/tapping time.
tabetha

xr2wishy

iTrader: (2)

if you can't get ptfe to seal it, a thread locking liquid ain't gonna do shit IMO.
just rip ptfe off and use shit loads more making sure you wrap it the right way.

jedi0_3

Evening XR2wishy.
The 5900 & 5910 that Tabetha recommends is flange sealant and not thread locking liquid mate. Out of interest what is the right way to wrap PTFE tape?

tabetha

FYI xr2wishy, the 5900/5910 is a super high modulous compound, nothing remotely liquid about it at all, it is probably the most un-runny sealant there is, it also works underwater, in liquids, is impervious to oils/fuels, most acids.
It is vastly superior to ptfe, and can be used for loads of other uses, on gaskets, I even have a light held onto a shelf in me garage with this stuff, as it sticks to anything perfectly, inc wood, glass, metal, plastic, fibreglass, carbon, etc etc.
tabetha