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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: jasvair ()
Date: March 19, 2017 07:44AM

I only use the Viton valve stem seals in all my engine rebuilds. I had good success using them. I sell a lot of sets every year for $8.50 a set.
John Sweet
John's Corvair Parts

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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: Frog ()
Date: March 23, 2017 05:48AM

After browsing around YouTube, it seems rather simple to change valve-stem seals at home instead of lugging my heads back to my machinist. I even saw a video of a guy with a British/Australian/New Zealand/Hong Kong (don't want to offend anyone, you know) accent removing the valve spring with socket and a hammer--that seems standard. He actually was able to compress the valve spring with a spanner wrench and hold the compression in place with two plastic wire ties.

Anyway, it seems that if I go to my auto-parts store and rent a spring compressor, I'd be able to replace the stem seal myself, right?

I bet Dave Motohead's even made a video of that . . .

Thanks.

Frog

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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: Frank DuVal ()
Date: March 23, 2017 10:14AM

Yes, buy the K-D 3078 and you can do it yourself easy. Since the Corvair engine vales sit horizontally, you do not even need an air adapter or fill the cylinder with rope, since the valve will not fall by gravity into the cylinder.

Here is an example:

[www.amazon.com]

Frank DuVal

Fredericksburg, VA

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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: jjohnsonjo ()
Date: March 23, 2017 02:58PM

I use the lever type, works OK. I bought it a long way from home when I broke a valve spring. Its what they had where I bought the spring. It stays in the car, hope I don't need it again.





[www.amazon.com]

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: Frog ()
Date: March 24, 2017 05:00AM

Thanks for the info.

Frank, because my heads haven't been installed, yet, I'll have not problem with wayward valves.

Frog

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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Posted by: Lane66m ()
Date: March 24, 2017 06:14AM

A good tool can be had for less than $35. Just have to search the net for one. Then you have it for future use or being a good friend to close by neighbors needing head help. I purchased mine about a year ago to strip some badly corroded heads. Paid about $20 for it of eBay.

Al Lane
Ellabell GA

1966 Corsa Turbo Coupe, 180 hp 4 Spd
1966 Monza Coupe, 110 hp, 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
1947 Farmall A tractor
2015 Chevrolet Malibu


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Re: Teflon versus Stock "Rubber" Valve-Stem Seal
Date: March 24, 2017 02:38PM

Just for information - We are 100% Teflon stem seal users - intakes ONLY! We have never seen a problem. Viton probably works fine too although 900+ degrees can be found in the chamber. Viton 575-650 degrees maximum?

Lon Wall
Corvair Underground Inc

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