Does it have to be RTV?

[esoteric]

Whats a better option then RTV? I have been holding off my FMIC install because well I really don't like the idea of using RTV in places where there is airflow or engine flow.

Is there something that has less chance of gunking up the engine if it pancakes a bit.

Does copper spray work for jpipe/throttle elbow install or does that only work with a previous existing gasket.

 

[Thomas91169]

what are you using RTV for on a FMIC install?

only places i could think of is if it comes with a new j-pipe and tb elbow, in which you get new gaskets for each, and copper spray both sides.

 

[ramsack]

Copper spray or RTV is meant for bolstering an existing gasket that was used already. It won't make a reliable seal on its own. RTV is also used as a gasket for stuff like the oil pan, but you're not supposed to just slap it on. It's supposed to be allowed to set up a bit before bolting on the pan.

 

[esoteric]

When asked previously I was told that the FMIC kits didn't come with gaskets so I just assumed they wouldn't, so just copper spray it?

And yes its for the tbody elbow and jpipe.

 

[GSXSixteenG]

Copper spray your gaskets and use hair spray on the couplers.

 

[Jonman409]

Both should be physical gaskets. You can get both from extremepsi for around $10

 

[Thomas91169]

Copper spray or RTV is meant for bolstering an existing gasket that was used already. It won't make a reliable seal on its own. RTV is also used as a gasket for stuff like the oil pan, but you're not supposed to just slap it on. It's supposed to be allowed to set up a bit before bolting on the pan.

So are you telling me you use nothing on new gaskets then? Or did you just mean that you cant just go without a gasket and use gobs of rtv to seal two pieces of metal......

btw to OP; you can get gaskets for cheap off extremepsi.com or other vendors, or just make your own out of the gasket material found at any auto store. Personally, i cut my own. Just takes a few minutes and patience and skills with the razor blade. ive made gaskets for pretty much everything that uses a gasket on a dsm (save for maybe oil pump/front case/etc) and many other types of cars with 0 issues. Copper spray both sides, install and done.

 

[ramsack]

I myself don't use anything on new gaskets, and I always replace non-metal gaskets instead of reusing them, but only if they were run on. I meant it as copper spray isn't a gasket in itself, you can't just spray 2 surfaces and expect it to seal. Same with RTV. RTV is made to be a seal, not a gasket. The reason I replace gaskets all the time is because I, too, use the big sheets of gasket material and make my own

 

[dcmarf]

Had bad expriences with RTV now hate the stuff but a new fan of copper spray

 

[Colt4G63 also]

If it doesn't come with the gaskets, that doesn't mean you don't need them. Buy new gaskets!

You can use RTV on those thin paper gaskets, but wipe it with your finger to form a thin film on the gasket, then put it together while still tacky. Brush tack works great too, but it's tougher to clean off when you take it apart years later.

 

[esoteric]

Thanks guys I am just going to use copper spray. Hairspray on the couplers, does this actually work?

 

[ramsack]

Hairspray on the couplers, does this actually work?

It does for boost leak testing if couplers pop, but who knows how it will hold up to running after a while. It can't hurt!

 

[Thomas91169]

Thanks guys I am just going to use copper spray. Hairspray on the couplers, does this actually work?

it helps with piping that doesnt have a bead at the end. When pressures increase without a bead the pressure forces the pipe to slide right out of the coupler, no matter how tight you make it. Hairspray is tacky and helps *stick* the two together, but not much.

if you have piping that has a bead, and use t-bolt clamps instead of worm clamps, you should be good to go unless you start running 30-35+psi. The bead keeps the pipes from being able to slide out from inside the coupler.

 

[pboglio]

New OEM Mitsubishi gaskets come with a dried bead of sealing material already on the gasket. These go on dry. After market gaskets need some tack, I use Hylomar Blue.

 

[XiKeiyaZI]

Whats a better option then RTV? I have been holding off my FMIC install because well I really don't like the idea of using RTV in places where there is airflow or engine flow.

Is there something that has less chance of gunking up the engine if it pancakes a bit.

Does copper spray work for jpipe/throttle elbow install or does that only work with a previous existing gasket.

Basically all you're going to be doing is running piping. I'm not sure where you'd need gaskets in a FMIC install..but you will use quite a few couplers to keep the pipes together.

The Secret to keeping your couplers on under boost is to spray the inside of the couplers with Aqua Net Hair Spray. It holds very well and will save you from embarrassing yourself by blowing off a pipe trying to eat that Z06 you'll be racing later.

The Hold is good, but also keep in mind that it makes removing and cleaning up piping very difficult and tedious.

 

[Tanro]

Use hairspray or 3m spray glue* around the ends of the pipes where couplers go.

Use copper seal on your tb elbow and j pipe gaskets. Make sure to get new ones they should cost like 10$ or so at an autoparts store.

*
If you use 3m glue use a lighter weight version. They make several strengths.

 

[esoteric]

Basically all you're going to be doing is running piping. I'm not sure where you'd need gaskets in a FMIC install..but you will use quite a few couplers to keep the pipes together.

The Secret to keeping your couplers on under boost is to spray the inside of the couplers with Aqua Net Hair Spray. It holds very well and will save you from embarrassing yourself by blowing off a pipe trying to eat that Z06 you'll be racing later.

The Hold is good, but also keep in mind that it makes removing and cleaning up piping very difficult and tedious.

You need gaskets for tb elbow and jpipe.

 

[XiKeiyaZI]

You need gaskets for tb elbow and jpipe.

Good call. I neglected to think about those. I was thinking of just the piping.

 

[Thomas91169]

trying to eat that Z06 you'll be racing later.

i 'd.

anyone wondering about what rtv to use on what parts isnt going to be a contender with ZO6's anytime soon.

 

[esoteric]

So copper spray or whatever will work? Also while were in here, does the OEM mitsu valve cover gasket need to be sprayed?

 

[GSXSixteenG]

So copper spray or whatever will work? Also while were in here, does the OEM mitsu valve cover gasket need to be sprayed?

Its your own preference, some people like a thin layer of rtv and some don't. Its your choice. I've never had any bad experiences using a thin layer. When you have lots of excess... that's when you run into problems.

 

[Thomas91169]

So copper spray or whatever will work? Also while were in here, does the OEM mitsu valve cover gasket need to be sprayed?

Not with copper spray.

i do apply a thin bead of black rtv into the valley where the valve cover gasket sits (on the valve cover side), and also apply a thin layer of black rtv along the flat surface of the gasket where it will rest upon the head. i squeegee it off with my finger so its a very thin layer.

youll get 50/50 on this one. the rubber vc gasket is very soft and is meant to provide a seal without the use of additional sealant, but its not a bad idea to still reinforce the seal with.