Fitting sensor on Trex 600NSP

[Richard H]

Hi all

Got a carbsmart today and just wondering ghow everyone else is fitting the sensor to the os50.

I have seen Finless Bobs setup, just wondering what those that have one have used to secure it to the engine.

Cheers

Richard

[trvo]

I found ordinary silicone sealant is the best, you can get it at diy stores. Check the packaging and make sure it's rated for approx 210+ degrees Celcius.

Trev

[Richard H]

Thank you Trev.

[trvo]

No probs

Trev

[marktigere1]

Yep, thanks Trev.

That's worth knowing as I always thought you needed special heat conductive silicone.

Cheers

Mark

[moonmanflyer]

But don't use it for an engine to pipe gasket as i saw the other day on a second hand raptor 30, what a mess, all over the cost of a little alu gasket, some people

[Pipistrelli]

There is a product called RTV silicone, this is the stuff they use on oxygen sensors in car exhausts. The good thing about this product is that it is tolerant of very high temperatures and it doesn't give off any nasty chemicals when heated, so will protect your motor too!

You can get it from most car accessory shops!

[robgt]

You want to use a silicone that doesn't set too hard or the damping effect is lost and the sensor can break. The sensor head is fairly fragile, so make sure it isn't actually touching the engine where the vibration will kill it - I push mine in until it touches, then back it away a few mm.

I have previously used Arctic Silver Thermal Epoxy, but that was a bad idea. It set solid and killed the sensor. Good heat conductivity though

Cheers,
Rob

[machasm]

You want to use a silicone that doesn't set too hard or the damping effect is lost and the sensor can break. The sensor head is fairly fragile, so make sure it isn't actually touching the engine where the vibration will kill it - I push mine in until it touches, then back it away a few mm.

I have previously used Arctic Silver Thermal Epoxy, but that was a bad idea. It set solid and killed the sensor. Good heat conductivity though

Cheers,
Rob

Don't tell me that! I have used Arctic Silver Thermal Epoxy on mine.
So far so good but only put a couple of gallons through it so far.
Adrian.

[trvo]

Should be alright with Epoxy, I used Thermal Compound and 24hr Epoxy mixed on my old hyper and the sensor is still stuck to it and working fine (even if the engine is sitting on the desk unused) - I can see how it could damage a weak sensor though.

Trev

[barney]

Edited and post now shifted

[Taffage]

I just used normal 30 min epoxy. Been in there happy and working well since last summer.

[machasm]

Well my sensor gave up today.
Must have been as was previously said. The thermal epoxy set rock hard so did not provide any dampening to the sensor and the vibrations from the engine must have killed it. Can't think of any other reason for it giving up.

The other downside to using epoxy was that it was a b**ch to get out!
I had to grind all the epoxy away using a dremmel. Took ages.
Anyway, have ordered another sensor and will use RTV sealant this time.
If it breaks again I won't bother to replace.
Adrian.