Using Rtv To Make A Gasket.

CarMichael Angelo · Aug 18, 2014

Well that's what the tube says it is........"gasket maker".

I've never used any of the high temp silicones solely as the gasket between the intake and the head, as I've always been able to just buy the correct gasket from Felpro.
But Felpro doesn't make anything for a 4.0L crossflow head from Australia, and the stock gasket I have would need opening up to match the now bigger port.

Although I have a gasket, I only have one. It is the thickness of the cardboard backer that comes on a legal pad and again, I only have one. If for whatever reason, I need to take the intake off after installation, I'll be right back here, wondering if I can just forego the paper gasket, and go straight silicone.

I know that I'm gonna do that on the exhaust manifold flange, I'm going to use ultra copper there, as it has always been my practice on headers, but the intake is the reason for the question.

I'm putting that thing on for real today.

hoopty5.0 · Aug 18, 2014

Can you trace the gasket on to a template and then trace it onto a sheet of gasket material to make another?

madspeed · Aug 18, 2014

The Right Stuff in the spray can was recomended to me for the lower intake manifold to heads when I did my head gaskets. I can say it is easy to use, and withstood the fire I had

http://www.amazon.com/dp/B000HBM4FQ/?tag=stangnet-20

mikestang63 · Aug 18, 2014

Right Stuff X 100

srtthis · Aug 18, 2014

right stuff in the cheese wiz can

84Ttop · Aug 18, 2014

x 1,000,000 for the right stuff!!

srtthis · Aug 18, 2014

and once you use it in the cheese wiz can you'll never want to buy tubes of RTV again

f8tlfiveo · Aug 18, 2014

Right stuff.. I used the one for the caulk gun. Expensive but Worked good

revhead347 · Aug 18, 2014

Not sure about Right Stuff but I can assure you that RTV will not last.

Kurt

srtthis · Aug 18, 2014

f8tlfiveo said:
Right stuff.. I used the one for the caulk gun. Expensive but Worked good

i gotta find that stuff for a caulk gun! that would make the great wall of RTV easier to make for sure

jrichker · Aug 18, 2014

Gasket maker - small ball peen hammer. Lay the gasket material out on what you need to gasket and tap gently around the edges & bolt holes using the ball end of the hammer...
The sharp machined edges of the part cut the gasket material. This works quite well as long as you figure some way to keep the gasket material from moving around while you are tapping away... Sometimes you lay the gasket material out and tap the bolt holes first. Then stick bolts in the holes that you just cut in the gasket.

90lxcoupe · Aug 18, 2014

Make a template and send it to cometic, i did this with my header flanges and my intake gaskets. If i need a new set i just call them and within a week they ship it out to me. The gaskets are very afforable too. About 22 bucks for a pair of intake gaskets for my high ports.

madspeed · Aug 18, 2014

srtthis said:
i gotta find that stuff for a caulk gun! that would make the great wall of RTV easier to make for sure

available on Amazon

rdharper02 · Aug 18, 2014

I recently learned (the hard way) that high performance magnum Mopar builders will not utilize the front and rear seals on the intake due to leakage. Just like 350s, a thick bead front and back does it. (I'll let you know if the bead of high temp leaks (after setting the truck on fire).) I also "know a guy" who utilized a 72 hour dry time and a bead of high-temp to seal a water pump when the proper gasket could not be found in town. That guy will also let you know if it fails (after setting the truck on fire and pushing it down the hill). Actually, enough dry time and the right bead and it should hold against low boost levels between two true surfaces.

jetmech807 · Aug 18, 2014

jrichker said:
Gasket maker - small ball peen hammer. Lay the gasket material out on what you need to gasket and tap gently around the edges & bolt holes using the ball end of the hammer...
The sharp machined edges of the part cut the gasket material. This works quite well as long as you figure some way to keep the gasket material from moving around while you are tapping away... Sometimes you lay the gasket material out and tap the bolt holes first. Then stick bolts in the holes that you just cut in the gasket.

This is the method I was shown years ago.

7upstang91 · Aug 18, 2014

I also second the 'Right stuff'. My neighbor is a GM service manager who says GM has a product that makes Right Stuff look like a joke.

CarMichael Angelo · Aug 18, 2014

7upstang91 said:
I also second the 'Right stuff'. My neighbor is a GM service manager who says GM has a product that makes Right Stuff look like a joke.

You can't second Right stuff, it's already been thirded and fourth'd

f8tlfiveo · Aug 19, 2014

rdharper02 said:
I recently learned (the hard way) that high performance magnum Mopar builders will not utilize the front and rear seals on the intake due to leakage. Just like 350s, a thick bead front and back does it. (I'll let you know if the bead of high temp leaks (after setting the truck on fire).) I also "know a guy" who utilized a 72 hour dry time and a bead of high-temp to seal a water pump when the proper gasket could not be found in town. That guy will also let you know if it fails (after setting the truck on fire and pushing it down the hill). Actually, enough dry time and the right bead and it should hold against low boost levels between two true surfaces.

I never use those stupid rubber gaskets with the intake kit. I build a a big bead also, I am positive I never waited 72 hours though. Lol.

jrichker · Aug 19, 2014

jetmech807 said:
This is the method I was shown years ago.

Well, we have something else in common besides having worked on Mustangs and airplanes. I learned how to make gaskets with a ball peen hammer when I was a kid working on lawn mower engines for go-carts. That was over 55 years ago...

7upstang91 · Aug 19, 2014

madmike1157 said:
You can't second Right stuff, it's already been thirded and fourth'd

I fifth it then!

Using Rtv To Make A Gasket.

CarMichael Angelo

my rearend will smell so minty fresh,

hoopty5.0

mechanicus terribilis

madspeed

Colonel Mustard

mikestang63

srtthis

the guy doing it does every local racers rear end

84Ttop

They make new pistons every day, so why worry?

srtthis

the guy doing it does every local racers rear end

f8tlfiveo

My wife likes my spool and blow-off valve.

revhead347

Apparently my ex-husband made that mistake.

srtthis

the guy doing it does every local racers rear end

jrichker

StangNet's favorite TOOL

90lxcoupe

madspeed

Colonel Mustard

rdharper02

like kicking myself in the junk

jetmech807

7upstang91

CarMichael Angelo

my rearend will smell so minty fresh,

f8tlfiveo

My wife likes my spool and blow-off valve.

jrichker

StangNet's favorite TOOL

7upstang91

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Using Rtv To Make A Gasket.

my rearend will smell so minty fresh,

mechanicus terribilis

Colonel Mustard

the guy doing it does every local racers rear end

They make new pistons every day, so why worry?

the guy doing it does every local racers rear end

My wife likes my spool and blow-off valve.

Apparently my ex-husband made that mistake.

the guy doing it does every local racers rear end

StangNet's favorite TOOL

Colonel Mustard

like kicking myself in the junk

my rearend will smell so minty fresh,

My wife likes my spool and blow-off valve.

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