Not wanting to sound like a nube, but here it goes. I bought my F4 from a dealer who didn't have any of the records/receipts from the previous owner. I've been trying to figure out what all was done (carbon bolt-ons, etc.) before I got it and now I'm starting to look closer at the exhaust. The cans are Arrow e3s, but the pipes are turning blue/purple/pink like titanium. Is there something I can look for that will give me a definitive answer?
Both stainless and titanium are non magnetic but in my experience that certainly looks like stainless...
The rainbow effect will eventually be replaced by a bronze brown colour, as the stainless goes through its various heat exposure processes. I have polished a brown stainless steel exhaust, only to see it turn rainbow again and eventually bronze....
Back on topic. I have a 1 cyl bike in my collection that I recently did an exhaust upgrade on. The pipes were steel and went blue just like in your photos. Do the pipes have any kind of markings on them? That might be helpful for identification.
Nice that you changed directly the oil
You can easily remove the rear 4 dampers , they come off in pairs. If they weigh less then 3.0 kg there Titanium. Tit... Weigh around 1.75 kg. Rg 3 inox 3.62 kg , hope this helps.
The quickest way to tell the difference between Ti and stainless is to give it the taste test. Clean a spot and give it a big old lick. It's best to do this when the pipes are cold.
If it tastes like aluminium foil with a tinge of asprin, it's most likely stainless, or inox.
If it tastes like hot pepsi with a nutty after flavour, it is Ti.
The quickest way to tell the difference between Ti and stainless is to give it the taste test. Clean a spot and give it a big old lick. It's best to do this when the pipes are cold.
If it tastes like aluminium foil with a tinge of asprin, it's most likely stainless, or inox.
If it tastes like hot pepsi with a nutty after flavour, it is Ti.
Another way to tell your steel or inox pipes from titanium is to look at the welds. Titanium welds are very fine and actually are flush or recessed a bit. Regular steel tig weld will be raised a bit.
Here is my guess why, Noel will know for sure: When you tig weld Ti, unless the material is shielded from both sides, you don't feed rod into the puddle. In effect, you are melting the two pieces of titanium together and that is what gives you the flush or slightly recessed look.
Whereas with steel, you feed rod into the puddle adding metal and you get a raised effect.
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