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Sealing up your engine case
pringa8 - February 16th, 2006 at 10:50 AM

I thought I would ask you drag racing guys as your engines would be put under a lot more stress than a vee engine (given the limitations put in place).

Can you tell me what sealant you use when closing up your case? I'm not having much luck with keeping oil in the case! It's a new magnesium case so age isn't an issue. I'm wondering if I'm using the right sealant for a racing application?

Any advice would be great. Cheers

vw54 - February 16th, 2006 at 12:30 PM

Cureall good stuff

Menangler - February 16th, 2006 at 09:55 PM

non hardening Permatex, small white bottle red lid.

71EJVan - February 17th, 2006 at 12:47 PM

Hylomar
Similar to permatex

1303Steve - February 17th, 2006 at 02:00 PM

Hi

I like Curil, its made by Elring the VW gasket supplier. Make sure you clean the mating faces with thinners to remove old sealant etc and file down any nicks around the case outer edge from rough handling.

Steve

koolkarmakombi - February 17th, 2006 at 06:12 PM

check the library on type2.com

I use this german goo made from the thighs of... nonono wrong forum its a curil product.

there is discussion about the cotton thread wrapped around the sealing faces, I reckon its not a good move.

If you are worried about the seal spot face the case to use bigger nuts.

plough - February 18th, 2006 at 12:23 AM

I was told by a a vw trained mechanic in Rocky to use only Curil K2. I did as I was told and never had a problem. Paintakenly cleaned mating surfaces etc as mentioned previously.

Glenn

shiftyvw - February 18th, 2006 at 08:04 AM

I was always told and used permatex non hardening, but im going to silicone based sealant now as thats what ive seen work better than permatex on porsche 911 motors. The secret with silicone is how it is applied and what type of silicone you use, as there are so many types. Applied properly it wont bead off and get in your oil system etc. The type used on the porsche motors was Wurth brand and red in colour, cant remember the number. I tried a permatex or loctite grey silicone on my latest motor so ill have to see how it goes. Id say permatex is more idiot friendly than silicone.:P

pringa8 - February 18th, 2006 at 03:09 PM

So many options.... thanks for the ideas guys!

dangerous - February 18th, 2006 at 05:29 PM

Don't use silicone on case halves.
It holds the case appart (I have measured .002") and makes the crush on the bearings incorrect....doesnt leak though.
My favorite is Curil non hardening, and permatex and hylomar are great too, some are a little messy though.
The factory never used it, so you don't need to.

shiftyvw - February 19th, 2006 at 08:28 AM

Never heard about holding the case halves apart, makes sense though. I only apply it super thin, ill have to see what gap i end up with. That said ive never had a problem with permatex!

pringa8 - February 19th, 2006 at 02:13 PM

Quote:
Originally posted by dangerous
Don't use silicone on case halves.
It holds the case appart (I have measured .002") and makes the crush on the bearings incorrect....doesnt leak though.
My favorite is Curil non hardening, and permatex and hylomar are great too, some are a little messy though.
The factory never used it, so you don't need to.


The factory never made them to go to 6500 rpm on standard internals either! :lol:

Thanks for the advice on the silicon, i'll make sure I definitley wont use that. I didnt know about it holding the case apart, I don't want any gaps what so ever!

Craig Torrens - February 19th, 2006 at 07:42 PM

8500rpm all day every day........................permatex.

vw54 - February 20th, 2006 at 06:34 AM

Curil or Permatex there both non hardening and both good

pringa8 - February 21st, 2006 at 07:17 PM

Sounds like permatex is the majority! I'll give it a shot. Thanks everyone for your input :thumb