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Questions about exhaust studs

  • Thread starter Thread starter Skaat
  • Start date Start date
It is called here electrolysis.
Principle of a battery is 2 dissimilar metals and an acid, creates electrolysis.
Aluminium and SS hate each other and together with contaminated water/road grime a receipy for corrossion and aluminium/SS thread corrosion
 
the whole idea of studding the engine is so you will NEVER EVER IN A MILLION YEARS have to take a bolt out to remove the exhaust. Who cares if it corrodes in there?? That will just keep them good and tight and thats that!! I did mine so i would never have to feel like i was crapping razor blades and praying everytime i had to take a bolt out!!!
 
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I have the Napa Kit. $13 for 10 studs with nuts. They are a little on the short side for my Yoshi header though.... could do with another 10mm - 15mm length on them.

I got it on but it's a bit difficult getting the nuts started. I'm trying to find something longer... not located a metric 8mm x 1.25 in a longer size as yet.
 
Can someone explain what the kit is about? I don't have any bolts and need to replace them all. The stud kit sounds nice, if someone has a link or more information on them that would be cool. Also, if you know the replacement size for the stainless steel bolts I could use that also. Thanks.
 
Napa has only one 8mm stud kit. 10 of them in a clear pack, you'll find them.

If you get stainless bolts instead you want 45-50mm.
 
chuck hahn said:
the whole idea of studding the engine is so you will NEVER EVER IN A MILLION YEARS have to take a bolt out to remove the exhaust. Who cares if it corrodes in there?? That will just keep them good and tight and thats that!! I did mine so i would never have to feel like i was crapping razor blades and praying everytime i had to take a bolt out!!!
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problem with your theory is when the nut and stud corrodes and snaps off and then you cant remove the rest of the stud because it has corroded into the head. 2 bolts per cylinder. removed and lubricated regularly will last longer than the bike will.
a stripped stud seized in the head is an expensive repair
 
In my full-time job, I deal all the time with fasteners that have been exposed to extreme temperatures.

Whether bolts, studs, nuts, whatever - if it's a threaded fastener exposed to heat and/or the elements: anti-sieze, anti-sieze, anti-sieze. You can use the nickel-based types for similar metals (steel-steel or stainless-stainless), but used the copper-based types when the materials are not the same. I never use the lead-based compounds.

Then, check them often. For the exhaust bolts OR studs, not a bad idea at all to add removal/anti-sieze/reinstall to a routine maintenance schedule.

Really, routinely checking any and all fasteners is a good idea.
 
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Agemax..if the nuts rust or corrode on?? Thats the whole idea of STAINLESS STEEL studs..they dont rust or corrode!! Stainless steel washers and nuts too!! And for some god forsaken reason if they even seem a bit fussy just use a nut splitter and cut the friggin nut off!! Simple..effective ..and youll never have a snapped off exhaust stud ever again!!!
 
chuck hahn said:
Agemax..if the nuts rust or corrode on?? Thats the whole idea of STAINLESS STEEL studs..they dont rust or corrode!! Stainless steel washers and nuts too!! And for some god forsaken reason if they even seem a bit fussy just use a nut splitter and cut the friggin nut off!! Simple..effective ..and youll never have a snapped off exhaust stud ever again!!!
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why not just use ss bolts and anti sieze them regularly, say every 2 months? saves the cost and hassle of a nut splitter and it makes life a whole lot easier if you want to do a head refurb without struggling to pull 8 locktited studs from the exhaust ports. ss studs not regularly lubed will weld themselves in the head if not done regularly. they WONT last forever
 
a nut splitter cost about 5 bucks at any auto parts or hardware...and trust me youll never have to use it anyways. better yet lets just forget it..i am an idiot who has had them on his bikes for years and i just dont know what i am talking about..
 
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chuck hahn said:
a nut splitter cost about 5 bucks at any auto parts or hardware...and trust me youll never have to use it anyways.
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try getting a nut splitter on the inner No3 cylinder or a decent allen key on a well lubed allen bolt. i know which one will be easier to get out! :confused:
 
I am not gonna entertain this any further..i know what works and doesnt..so good luck to you.
 
Ive never ever ever ever ever ever had to use a nut splitter and dont own one!!!!! Get it??? that because the **** is stainless steel..Geesh
 
Surely if you remove & re-install bolts regularly that will wear out the Aluminium threads in the head.....

That is exactly the issue I have with my 750 which has worn a Bassani most of it's life hence the bolts have been removed a number of times for oil & filter changes. They still have thread there, it holds but it's loose (peaks have worn thin I suspect) & the bolts back out over time because of that.

I will be going for studs on mine this time. 2 nuts locked together & a socket is as easy to work with as an allen key :)
 
yes Salty Monk..the two nuts locked to gether is how i installed mine too..just cant convince most people that stainless steel will NEVER rust or corrode though as far as the nuts getting stuck on a stud. I have had all my bikes that way from the first time i got them and thats been 3 yaers for the oldest one and they turn off as nicely as if they were new...and since you dont have to keep running a bolt in and out of the head, the threads dont get worn out in the head either.
 
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chuck hahn said:
Ive never ever ever ever ever ever had to use a nut splitter and dont own one!!!!! Get it??? that because the **** is stainless steel..Geesh
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a bit fussy just use a nut splitter and cut the friggin nut off!!
sorry mate but it was you that advised using it in the first place :confused:
 
WRONG..What is said was "that ..IF..it got stuck for some god forsaken reason you could just use a nut splitter to cut the nut off the stud" I never said i had one..was gonna go buy one ..or had ever had the need for one!! Was responding to the question as to what "IF" it was being fussy. Does that refresh your memory a bit? Trust me and i am not trying to be an azz..youll never need one anyway. anti seize them in the head if you really feel it will add some comfort for you but that all youll really ever need to do. The stainless will not corrode or rust..it just wont happen.
 
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