Jussi Alanko
Member
- Joined
- Jun 5, 2020
- Location
- Finland
Ok, i bought a Holset hx40 super while ago, it's in very good condition except studs for the downpipe flange.
They were in bad shape, and threads at the studs was almost all gone. So i decide to change the studs. They were extreme hard to get out at the turbine housing, almost all of the six studs snaps off and i had to weld big nuts to broken studs, i get five of six out this way, but one is so hard to get out that i had to drill a 6.5mm hole at center of the remaining stud and turn a new m8 thread to existing hole where remaining stud was.
operation goes ok, and now i had a turbine housing with good threads.
However i'm gonna sell this 18cm housing and buy a new 16cm housing.
When i get this new housing, which kind of studs i had to put in it? They need to be hard enough that threads remains in good condition, i will use a copper locking nuts to it.
Tonight i'm looking different kind of studs at ebay, where they are cheap. I even consider to put a titanium studs to it, another good option is 12.9 rated hardened steel studs.
When i install the downpipe flange i use a copper paste to the studs and for the nuts.
My goal is that i can remove and install downpipe many times without breaking the studs, it's actually must to remove and install flange again and again, when i duild downpipe and rest of the exhaust system.
I'm considering to use a v-band flange adapter to turbo, but it cost about 90?, it looks like that:
It solves most of the problem of bad studs, because they need to tighten just once. But still i want that they will be in good shape after years of use, and when time comes to remove downpipe they must be easily loosen out.
So, which studs i buy, normal steel, hardened steel, rst or titanium. In any case i will use copper nuts and a copper paste?
They were in bad shape, and threads at the studs was almost all gone. So i decide to change the studs. They were extreme hard to get out at the turbine housing, almost all of the six studs snaps off and i had to weld big nuts to broken studs, i get five of six out this way, but one is so hard to get out that i had to drill a 6.5mm hole at center of the remaining stud and turn a new m8 thread to existing hole where remaining stud was.
operation goes ok, and now i had a turbine housing with good threads.
However i'm gonna sell this 18cm housing and buy a new 16cm housing.
When i get this new housing, which kind of studs i had to put in it? They need to be hard enough that threads remains in good condition, i will use a copper locking nuts to it.
Tonight i'm looking different kind of studs at ebay, where they are cheap. I even consider to put a titanium studs to it, another good option is 12.9 rated hardened steel studs.
When i install the downpipe flange i use a copper paste to the studs and for the nuts.
My goal is that i can remove and install downpipe many times without breaking the studs, it's actually must to remove and install flange again and again, when i duild downpipe and rest of the exhaust system.
I'm considering to use a v-band flange adapter to turbo, but it cost about 90?, it looks like that:
It solves most of the problem of bad studs, because they need to tighten just once. But still i want that they will be in good shape after years of use, and when time comes to remove downpipe they must be easily loosen out.
So, which studs i buy, normal steel, hardened steel, rst or titanium. In any case i will use copper nuts and a copper paste?