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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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 Posted: Mon Sep 05, 2022 9:18 am Post subject: Yellow head bolt sealant?? |
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Reinstalling heads on the super fast 1.9L. Is there any other stuff that people recommend for sealant on the head bolts other than the yellow stuff? The stuff I got seems to be a clear oily liquid and not a paste at all. Let me know when you can.
Cheers,
RC |
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djkeev
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Joined: September 30, 2007
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Location: Reading Pennsylvania
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Mon Sep 05, 2022 9:37 am Post subject: Re: Yellow head bolt sealant?? |
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| djkeev wrote: |
| The Great Stuff |
What is "the great stuff"?? |
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Mon Sep 05, 2022 9:39 am Post subject: Re: Yellow head bolt sealant?? |
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| Can I just use the black sealant that I use for the rubber gasket on the head bolts in place of the yellow sealant? or is that a big no? |
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djkeev
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Location: Reading Pennsylvania
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Mon Sep 05, 2022 11:08 am Post subject: Re: Yellow head bolt sealant?? |
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| Did a little reading and apparently Tencentlife recommends REINZOSIL on the head nuts?? |
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bobbyblack 
Samba Member
Joined: May 21, 2015
Posts: 4620
Location: United States, Iowa
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| Posted: Mon Sep 05, 2022 12:40 pm Post subject: Re: Yellow head bolt sealant?? |
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| robcurtis2 wrote: |
| Did a little reading and apparently Tencentlife recommends REINZOSIL on the head nuts?? |
Yes, I read that a while back too. I was about to dig into his posts to find a quote and past it here, but now its out in the open, and can be searched for if the need for confirmation is required.
_________________
'87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Mon Sep 05, 2022 3:24 pm Post subject: Re: Yellow head bolt sealant?? |
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So when putting back together in steps:
1. Cylinders and pistons go back on. What type of sealant go on the black round gaskets on the bottom of the cylinders?? Maybe a little bit of oil?
2. The green gaskets on the top of the cylinders get a little oil but no sealant correct??
3. The black head gasket gets either the VW black sealant that comes with the gaskets or "the right stuff" on both sides of the gasket?
4. The head bolts get either the yellow VW sealant or more preferably per tencentlife the REINZOSIL sealant?? Im assuming apply the REINZOSIL as you would the yellow stuff with a bead around the mating surface of the head bolt?
I think thats it correct? Let me know when you can
Cheers,
RC |
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djkeev
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hardway
Samba Member
Joined: January 03, 2012
Posts: 490
Location: Fidalgo Island
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| Posted: Mon Sep 05, 2022 4:09 pm Post subject: Re: Yellow head bolt sealant?? |
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| For the O-rings at the cylinder, both green and black I use the slightest amount of Syl-Glide or Dow Corning silicone grease. I use the RTV supplied with the gasket set on the water jacket seal and at the base of the cylinder head acorn nuts. |
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djkeev
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Location: Reading Pennsylvania
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 5720
Location: Bemidji, MN
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| Posted: Tue Sep 06, 2022 6:12 am Post subject: Re: Yellow head bolt sealant?? |
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| djkeev wrote: |
| First thing I do when I open a gasket kit is to throw that yellow tube of mystery goo away. . |
i have to get better at throwing things... i've got a bunch of those no-name tubes but i would never use one on the cap nuts, no reason to keep them. i really don't like the way it dries/cures into a hard crust that flakes off. so many better things out there.
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60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
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hardway
Samba Member
Joined: January 03, 2012
Posts: 490
Location: Fidalgo Island
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| Posted: Tue Sep 06, 2022 1:03 pm Post subject: Re: Yellow head bolt sealant?? |
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The waterboxer engines were originally delivered with the rubber water jacket seals installed dry against the cylinder head. The head was painted with a yellow substance. That was the original main failure point. The updated service procedure was to use an RTV at the joint. The RTV prevented the initial intrusion of coolant under the gasket that caused corrosion of the head.
I have never had any issue with the black RTV supplied with the head sets. Obviously chemical sealants can degrade with age in storage. Lots of counterfeit parts are being distributed some being very well disguised. If you really want the highest quality RTV silcone sealants, I would suggest Three Bond and Drei Bond products which are probably the same company. Toyota FIPG (form in place gasket) and Honda Bond are both truly excellent RTV sealers.
The main reason that I replied to the original poster was his mentioning oil on the o-rings. O-rings function best when lubricated but oil can adversely affect many types of rubber. Silicone grease is a safer lube for o-rings. |
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borninabus
Samba R&D Dept.
Joined: May 18, 2006
Posts: 4729
Location: Arizona Highways
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| Posted: Tue Sep 06, 2022 2:50 pm Post subject: Re: Yellow head bolt sealant?? |
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the "black sealant" in the VR kits is Reinzosil.
Reinzosil is the german engineered "mother of all RTV".
it is awesome stuff!
use it on all WBX sealing surfaces in the proper way 
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Fri Sep 16, 2022 1:23 pm Post subject: Re: Yellow head bolt sealant?? |
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| robcurtis2 wrote: |
So when putting back together in steps:
1. Cylinders and pistons go back on. What type of sealant go on the black round gaskets on the bottom of the cylinders?? Maybe a little bit of oil?
2. The green gaskets on the top of the cylinders get a little oil but no sealant correct??
3. The black head gasket gets either the VW black sealant that comes with the gaskets or "the right stuff" on both sides of the gasket?
4. The head bolts get either the yellow VW sealant or more preferably per tencentlife the REINZOSIL sealant?? Im assuming apply the REINZOSIL as you would the yellow stuff with a bead around the mating surface of the head bolt?
I think thats it correct? Let me know when you can
Cheers,
RC |
Wondering if anyone could recommend what to use for each of my questions 1 thru 4? For example.....
1. Use (enter type of sealant name/brand)) for on the bottom of the cylinders and on the round black gasket and use this much applied to the ??.....
2. Use (enter type of sealant name/brand) on the little green round gasket at the top of the cylinder.
3. You can use the black rtv sealant that came with the black rubber head gaskets but (enter type of sealant name/brand) will work better.
4. (enter type of sealant name/brand) is better to use on the head acorn bolts in place of the little yellow sealant that came with the gasket kit.
Thank for your help.
Cheers,
RC |
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djkeev
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robcurtis2
Samba Member
Joined: March 31, 2006
Posts: 234
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| Posted: Fri Sep 16, 2022 2:03 pm Post subject: Re: Yellow head bolt sealant?? |
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Seems like there are a lot of Hylomar products on their website to choose from.
Does anyone have a link for the Hylomar sealant that they use? And the Right Stuff has a few options also so if you could link that also would be helpful.
Thanks
RC |
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djkeev
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Captain Pike
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Joined: December 30, 2003
Posts: 3437
Location: Talos IV, Piedmont Arizona
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| Posted: Fri Sep 16, 2022 2:40 pm Post subject: Re: Yellow head bolt sealant?? |
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When installing the heads I was taught to apply the black sealant on both sides of the rubber. Wait 20 mins then install. Torque 1/2 way and wait another 6 hours or so(usually overnight). Then complete the sequence. Idea being prevents "squish" out of the sealant.
Used the yellow goo but this was 25 years ago....
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robcurtis2
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