The Complete Engine Sealant Thread...

[mikedsilva]

Today (hopefully) is my cam tower to head attachment...

So, I plan to use the 1104 Neo, which I believe is recommended.
How Much sealant do I need to apply?
Is it a matter of applying a small bead to the tower around the bolt holes or does the whole surface need to be "spread" with a thin layer?

The below photo I pulled from a screen shot of the Pfixit dvd (which I have watched about 20 times)

[florent78]

hi guys


where do you put the curil T between the cylinder and case ?

just on the copper gasket ?
both side

or around the cylinder going inside the case ?

thanks for your help

[Henry Schmidt]

We use Curil T on both sides of the base gasket and on any gasket that may be removed regularly (IE: sump cover gaskets).
The sealant you see on the cylinder spigot is excess wiped from the gasket. Won't hurt but isn't necessary.

[Mark Henry]

Personally I'm not a fan of Curil T, never fails to leak for me.
I have 2 unopened tubes here both from supertec kits. I'll never use them.

Only place I use RTV is the base shims,
If you're a RTV hater you can use something like Elring Dirko....oh wait that's also RTV....or maybe...damn it's RTV again

[Henry Schmidt]

Originally Posted by Mark Henry

I have 2 unopened tubes here both from supertec kits. I'll never use them.

Send them back and I'll give you credit for both tubes.

[florent78]

thanks Henri

will use the Curil T


as I asked you, I don't know what kind of grease or perhaps oil I should use with the supertec head stud kit.

porsche rebuild manual says to use optimoly HT for the washer and the stud thread (hex nut side).

some friends just use oil

or dry ? (I don't think so)

what's the best solution ?

[Henry Schmidt]

Originally Posted by florent78

thanks Henri

will use the Curil T


as I asked you, I don't know what kind of grease or perhaps oil I should use with the supertec head stud kit.

porsche rebuild manual says to use optimoly HT for the washer and the stud thread (hex nut side).

some friends just use oil

or dry ? (I don't think so)

what's the best solution ?

Old stud kit came with anti seize but newer kits come with Supertec SpeedLube.
It's a formula we've developed over the past 15 years that we've used in our engine for at least 10 year. Over 300,000 test miles.

[Mark Henry]

Originally Posted by Henry Schmidt

Send them back and I'll give you credit for both tubes.

Other person(s) bought the kits.
Also in Canada so cost of shipping would likely be the same as the refund.

[rs-vic]

FYI, the blue o-rings supplied in the Victor Reinz kits are silicone rubber. Our host here offers 5 different flavors.
Pelican Parts - European Automotive Parts and Accessories - Porsche • BMW • Mercedes • Volkswagen • Audi • Saab • Volvo • MINI

[Trackrash]

Perhaps off topic but.....

What sealant should I use on my transmission gaskets? This leak started suddenly about 2 weeks ago. Trans was rebuilt, by me, about 5 years ago. Lots of autocrosses and DEs since. Nuts are tight.



Thanks,

[DRACO A5OG]

I used the paper gasket plus copper spray on gasket.

[arbita1]

Originally Posted by Trackrash

Perhaps off topic but.....

What sealant should I use on my transmission gaskets? This leak started suddenly about 2 weeks ago. Trans was rebuilt, by me, about 5 years ago. Lots of autocrosses and DEs since. Nuts are tight.



Thanks,

When I rebuilt my transmission everyone recommended paper gaskets with curel t. I have no leaks thus far.

[safe]

Originally Posted by Trackrash

Perhaps off topic but.....

What sealant should I use on my transmission gaskets? This leak started suddenly about 2 weeks ago. Trans was rebuilt, by me, about 5 years ago. Lots of autocrosses and DEs since. Nuts are tight.


Thanks,

I used Loctite 574 and no paper gaskets.

[Trackrash]

Thanks.

I am leaning toward curl-t this time around.

It's weird, to me, that one week my trans was dry. The next week it starts to leak from the gasket?

[Henry Schmidt]

Over the years, my method varied depending on specific intent.
In a race transmission where it is likely to be disassembled frequently, I use Curil T.
When building a gear box that will likely be together for an extended period of time, I use a thin coat of 574 on the paper gasket.

[Tippy]

Is the original post up to date?

Going to reseal mine shortly.

[Trackrash]

Originally Posted by Henry Schmidt

Over the years, my method varied depending on specific intent.
In a race transmission where it is likely to be disassembled frequently, I use Curil T.
When building a gear box that will likely be together for an extended period of time, I use a thin coat of 574 on the paper gasket.

That's good to know.

BTW. I used a thin coat of RTV on the gaskets when I built this trans about 5 years ago. Worked for five years. Once I get it apart in a couple of days maybe the point of failure will be evident

[Lapkritis]

Originally Posted by Tippy

Is the original post up to date?

Going to reseal mine shortly.

This truth still stands:

Originally Posted by Lapkritis

Suggest including Dupont Krytox GPL 207 in the list at least as an alternative as we've shown, ad nauseum, the dow grease widely used actually weakens o-ring strength.

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[Henry Schmidt]

After 16 plus years and literally hundreds of 911 based air-cooled engines assembled using Dow 55 o-ring lubricant, we have had zero reported instances of case leaks due to o-ring failure. Over the past few years of selling our case sealing kit through our host, Pelican Parts, the feedback has been overwhelmingly positive.
As a matter of fact, we are sending out a stock order for sealing kits today.

You don't have to trust me, the DOD uses Dow 55 today after decades of success in the weapon systems listed below that are still in service.

Dow 55 Military Application
NSN 9150-01-066-1823
02 N Strategic Weapon Systems(Poseidon and Trident)
23 N Ohio Class Ssbn (Trident)
43 N Aircraft, Hornet F/A-18
55 N Aircraft, Harrier AV-8B
6F M Howitzer Medium Towed Light Weight 155
BE N Missile, All-Weather Anti-Ship, Harpoon (AGM-84)
BM N Torpedo Systems, Mk 46
CM N Adcap Torpedo, Mark 48
CT F Aircraft, Osprey CV-22B
CX N Aircraft, Osprey V-22A, Marine Corps
EX N Los Angeles Class Ssn (688)
EZ N Ticonderoga Class Cg (47)
FJ A Lightweight 155MM Towed Artillery System, M777A2
HZ N Forrestal Class Cv
JA N Nimitz Class Cvn
JC N Fms - Kidd Class Ddg
JD N Arleigh Burke Class Ddg
JF N Oliver Perry Class (FFG-7)
JG N Seawolf Class Ssn
JM N Emory S. Land Class as
JR N Fms - Knox Class Ff
YJ N Virginia Class Submarine, SSN-774
Z9 N Aircraft, FA-18, a - D, E/F, G (Growler)

[Lapkritis]

How many of those applications are in contact with viton?



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