Titanium Bleed Screws - Yes or No?
Discussion
Although I have been fitting new bleed screws as a matter of course if there is any sign of corrosion, I have started using Titanium in both Brembo and AP calipers where the caliper threads are damaged
However I've been told that Titanium is more likely to cause galvanic corrosion with the aluminum caliper body
So should I stick with steel even though they can shear?
However I've been told that Titanium is more likely to cause galvanic corrosion with the aluminum caliper body
So should I stick with steel even though they can shear?
Go with standard brake nipples. I have had nipples break on me but that is when I would try to open them with a spanner. In recent years I have always used my impact wrench to give out 1 impact only (not to wizz them out). Not all impacts do this, the 12v cig lighter ones can. Therein you can actually continue to use the same nipple and I have not had one break after undoing it previously.
I have seen dis similar metal corrosion and it really needs to be avoided. Besides if it was to occur you either wouldn't be able to undo the nipple or the caliper would disintegrate. I don't know if titanium would do that but imo standard nipples do a reasonable job anyway and it's not worth the risk.
I have seen dis similar metal corrosion and it really needs to be avoided. Besides if it was to occur you either wouldn't be able to undo the nipple or the caliper would disintegrate. I don't know if titanium would do that but imo standard nipples do a reasonable job anyway and it's not worth the risk.
It’s not a problem I’ve ever encountered. I think Steel is the right material for the application. A lesson learned from many years of DIY spannering is that if a fixing looks manky, give it a good clean up with a wire brush before having a crack at it so you can see what you’re dealing with. They only need nipping up with fingertip pressure on a ring spanner.
Just been working on FiL little yaris this last week. It had standard steel bleed nipples but they had caused galvanic/dis-similar metal corrosion. The nipple was well stuck and once released the threads on the rear brake drum cylinder came off with the nipple (due to the dis similar metal corrosion)
Even if these threads had not come off like they did they would have had severely weakened sub structure and the cylinder would have needed replacement.
The cylinder was aluminium alloy - these suffer greatly when in contact with steel, the cast iron calipers however are different - never had this problem with them
Even if these threads had not come off like they did they would have had severely weakened sub structure and the cylinder would have needed replacement.
The cylinder was aluminium alloy - these suffer greatly when in contact with steel, the cast iron calipers however are different - never had this problem with them
Gassing Station | Suspension, Brakes & Tyres | Top of Page | What's New | My Stuff