hey guys. does anyone know of a good shop that sells exhaust studs? also, i am needed a gasket for a t4 turbo. my problem is that my stupid bolts at the turbo to manifold flange keep deciding to unfasten itself so i wanna switch to studs. thanks guys

Use lock washers.

The heat will remove any spring tension, the lock washers had, almost immediately.

Try torqueing the bolts down when the manifold/turbo housing is good an hot.

Blue Locktight is also a good idea. And like Steve said, crank them down when there nice and hot!!

I am not sure blue locktite would help much, as the blue is supposed to be removable, and you apply to heat to "release" it. I would think if you are going to use loctite, you would need the red!

I'm having the same problem as Vlad.
I've already tried using the red locktite and that seem to work neither. I'm also looking for a gasket for the turbonetics t3/t4 turbo anyone know where I can pick that up?

Also looking for a T3/T4 manifold gasket! What the hell is it with Toronto and the GTA in general that so commanly used auto parts are hard to find?

I had two Bolts that kept on losening. Even after a short trip.

I tried various Locktite products to no avail. This area gets really hot so finding a Locktite (or similar product) that would be working in this hot environment would be hard.

I'm in the process to replace the Head Gasket on my Car. I took the time to have all 4 Bolts (got rid of the Stud) drilled so I could use some Lockwire. This is something (Lockwire) that we comonly use in the Aviation world. Should work.

Having said that; I'm lead to think that having removed the Stud might have something to do with it. Maybe someone have a theory to support that claim...

Additionnal info; I even used a greather Torque value, from whatever is recommended to 70ft/lbs, even then the same two Blots would come loose.

Dave and Jonathan; Ziggy should be able to get you one.

I'll report on the Lockwire set-up in a week or so from now.

Ghislain.

I don't really have any theories, other than the obvious expansion/contraction from heat and cold. I am pretty sure you are right about no LocTite or similar product working, as they generally use heat to RELEASE. Only thing I can think of is that you need to tighten to the proper torque specs while everything is hot and expanded, not while it is cold...
The lockwire you are talking about..will that prevent ANY backing up, or does it just limit it and make sure the bolt or not doesn't come right out? Is it a cross drilled hole like a cotter pin type affair??

Lockwire prevents a Fastner from backing up.

The Holes were drilled in the head of the Bolts. It is pretty much similar as using a Cutter pin but the Lockwire is on the Bolt Head rather than at the Tread side.

Now I have to admit that these Bolts are made out of pretty hard material. I got a machinist do the work for me. He used a 0.09x" Bit and the plan is for me to use 0.040" Lockwire.

I do not have my camera here with me at the moment but I'll post some pictures as soon as everything is assembled.

Ghislain.

Here is a few pictures of the Lockwire.

Has been there for a few days and did not loosen. My bet is that it will never.
http://www.maritimelobsterexpress.com/DSM/IMG_0149.JPG

http://www.maritimelobsterexpress.com/DSM/IMG_0150.JPG

Ghislain.

lock wire is used on helicopter turbine engines also on large aircraft engines. its proven and simple to install just need steel wire, 4 studs with holes and your done. theres a certain twist you need to give the wires.

Have you checked the pictures that I just hosted???

Ghislain.

very cool idea with the lock wire.
I have not had the problem with my bolts loosening. However I am curious if the stock mitsu. bolts are good enough. I just picked up a big 16G and I am wondering what the best way to go about it is? My car came with a small 16G but when I removed it one of the turbo bolts cracked and the threads were left in the exhaust housing. I have researched and found that having a bolt crack there is very common. Just wondering what bolts people are using to try and combat this problem.

I would recommend getting a torque wrench and torquing them down to spec. The reason I say that is I went through the same thing with my other turbos and has the same problem. This winter I installed my new turbo and torqued every thing to spec I think it was 18 or 20 Foot pounds for both the Exhaust and Turbo. Once the car was warmed did every thing over and nothing came lose all summer.