Ok So im getting ready to put all my turbo parts together and from reading some threads and talking to some people Ive learned that most people don't use gaskets from the turbo flange to the turbo mani. Why is this? What Advantages are there? My parts are not new so should I use a gasket? Or should I get them machined flat and go metal to metal? Or should I use some Hi Temp silicone? Also what about the downpipe do you guys use a gasket there?

Thanks for All your info

 

They will not last and in some cases gaskets can be sucked through the turbine when they break apart.

Make sure everything is flat and bolt it together. No leaks.

 

I use OEM type single layer metal gaskets for both sides of the turbo
If your using a t25 turbo you can buy real OEM gaskets from Nissan

 

I'm a bit fan of copper gaskets with an embossed lip and I will be running one on my new manifold. That being said, I currently run a stainless gasket and have yet to have any issues, although it makes me nervous because I've heard the stories about stainless gaskets breaking apart and nuking turbines ( I believe that happened to Bob Bundy).

 

make sure they're flawlessly flat. do not use gasket. if you want 100% peace of mind get some HIGH TEMP GREASE and put some on there before you bolt it together. it will burn up and create a thin layer of carbon between the two metals which is basically a gasket but stronger.

don't use a regular composite gasket
it will fail. ask me how I know

 

Ok so time to send it out to the machine shop tomorrow, what about the downpipe are you guys using a gasket there or no?

and 18psi really use grease? not silicone?

 

Use copper high temp rtv if anything. You can use gaskets on the cat since it's far enough from the turbo.

 

yup. works like a charm

 

I am using an OE mazda MLSS gasket between the turbine and manifold... no problems at ~23psi. I'm sure you can get a similar item somewhere to fit a garrett turbo. If it works for your head gasket, why not for your turbine??

For the downpipe I am using a solid copper gasket, which has also worked great.

I'd like to replace the MLSS gasket with copper, mainly because the only source for the OE gasket is corksport and they want ~$30 for the damn thing. Only problem is I'd need to make it myself or have it custom made like I did with the downpipe gaskets. Silly mazda and their unique flanges...

 

The turbine flange on my manifold is warped as is the flange on my downpipe yet neither leak. Why add another failure point that is not needed?

 

High themp rtv works wonders, I use it for the mani, wastegate, and for the downpipe a metal one from EBAY, so far so good.

...

30 bucks yeah it is crazy, what one saves on cheap tranmissions and cylinder heads flips out on particular items.

There is this website I found that wants 130.00 for the passenger racing mount and almost the same for the drivers side. Getting racing parts for Mazda in some cases cost an arm and a leg. Somewhat like the JDM bumpers sold on Corksport...!

At the end of the 30 bucks are spent on the blink of an eye be it eating out or spending it on a bar.

There are some items that CS sells that its unique to them so they can easy sky rocket there prices if one wants to get a hold on some items. Like the saing:

"You have to give from the wing to eat from the breast"

So some items are overly priced while others are ok, to me it is a good deal the brake braided lines they sell, etc.