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damicotile Samba Member
Joined: September 16, 2004 Posts: 1069 Location: WOODLAND CA.
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Posted: Sun Oct 24, 2010 12:40 pm Post subject: Best exhaust gaskets? |
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I seem to be going through exhaust gaskets cuz it pops on deceleration. I first used copper ones, couldn't get them to seal right.
I got some paper ones, they got real brittle.
I got some fiber/metal type I have on here now and the exhaust nuts all had to be retightened.
Is there a real good one that will work best?
I thought about using the stock metal ones that come in the gasket set when I built this thing but wasn't sure.
It's an A-1 sidewinder - 1" 5/8 _________________ '73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
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jfats808 Samba Member
Joined: December 10, 2007 Posts: 5022 Location: oahu hawaii
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Posted: Sun Oct 24, 2010 12:50 pm Post subject: |
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Im surprised you cant get copper exhaust gaskets to work for you. They work well for me by just tightening down on the nuts. Youve named just about all the rest though and everything else dont seal as good to me as the slip on copper ones. _________________ 2276 IDA's 86C 11-1 DD !
2017 48 Trijet DRLA's W125
Rockstar Suzuki wrote: |
You might as well put 10 year build in your bullshit sig, as it will NEVER run. Also your a dick |
You can always learn something new, even from a fool.
Check your oil levels routinely! |
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Glenn Mr. 010
Joined: December 25, 2001 Posts: 76760 Location: Sneaking up behind you
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Posted: Sun Oct 24, 2010 12:52 pm Post subject: Re: Best exhaust gaskets? |
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damicotile wrote: |
It's an A-1 sidewinder - 1" 5/8 |
I use Vanagon exhaust gaskets. _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare |
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1955ccbug Samba Member
Joined: October 03, 2004 Posts: 730 Location: Olympia wa
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Posted: Sun Oct 24, 2010 4:45 pm Post subject: |
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There's two types of copper I believe..one has a crush seal, and the other is just a flat piece of copper....these are the ones I've been using and reusing for many years. |
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donmurray Samba Member
Joined: December 30, 2008 Posts: 841 Location: Frisco Texas
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Posted: Sun Oct 24, 2010 5:00 pm Post subject: |
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Maybe your flanges are not flat, or they're coming together out of parrallel. If they were over tightened then the flange ears can be warped. They'll never seal. There's so much tubing and weight in the A1 system some seating in may be necessary, so retighten once or twice after a high heat cycle.
Is there a recommended torque when using the copper gaskets? |
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stealth67vw Samba Member
Joined: January 22, 2004 Posts: 1851 Location: Grass Pants, Orygun
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Posted: Sun Oct 24, 2010 5:05 pm Post subject: |
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I use Hi Temp Copper RTV. I haven't used an exhaust gasket in over a decade. _________________ John Bates
JB Machining Services
1967 street Bug 2276 w/ 48 IDAs, 2020lbs with driver
7.76 @ 89.55mph 1/8 mile
12.34 and 108.10 mph 1/4 mile |
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mharney Samba Member
Joined: June 01, 2002 Posts: 8352
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Posted: Sun Oct 24, 2010 5:19 pm Post subject: |
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They're not sealing because something is not bolting up flush. Check it out and see what's wrong and fix it, then any of them should seal. I like coppers. |
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BugMan114 Samba Member
Joined: March 22, 2007 Posts: 3744 Location: Ellenwood, GA
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Posted: Sun Oct 24, 2010 6:09 pm Post subject: |
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I always have the exhaust nuts go loose on me when i use the stock type metal gaskets that come in the kits. the ones that have a thin piece of metal on both sides, and a crush type ring. EVERY TIME i use them, i always have to retighten them later. Not sure why. I've tried torquing them, that didn't work. I then tried tightening the hell out of them, just before i thought i was gonna break the stud, and they still came loose. I decided to use the cheap ass paper gaskets instead, and the nuts didn't come loose, but they blew out after about a month. and i made sure they flanges were all flat, because i took a file to them, and flattened them perfectly flat. _________________ 1974 Super Beetle: Custom resto in progress
1972 Super Beetle: Daily Driver
1971 Std. Beetle w/ 1929 Mercedes Benz Gazelle kit
1960 Baja Bug
1969 Baja Bug
Sand Rail- Homemade
Sand Rail- FUBAR
Aircooled Airheads
Why the hell do they call it a gland nut. its obviously a big fat bolt!!! |
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tencentlife Samba Member
Joined: May 02, 2006 Posts: 10067 Location: Abiquiu, NM, USA
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Posted: Sun Oct 24, 2010 6:16 pm Post subject: |
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Victor Reinz metal/composite for Vanagons. Best ones out there. It's normal to need a retorque after some use, but only once.
You can buy them individually at www.GowestyAutoParts.com, search as if for a Vanagon 84-91. _________________ Shop for unique Vanagon accessories at the Vanistan shop:
https://intrepidoverland.com/vanistan/
Please don't PM here, I will not reply.
Experience is kryptonite to doctrine. |
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earthquake Samba Member
Joined: January 10, 2008 Posts: 3984 Location: SANDY VALLEY, NEVADA
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Posted: Sun Oct 24, 2010 7:41 pm Post subject: |
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Anneal your copper gaskets by heating them up with a torch untill they are almost red hot to make them dead soft, use a little hi-temp silicone and let the silicone set over night and they should seal.
Casey _________________ 74 CLASS 11 LOOK-A-LIKE
69 DUNE BUGGY
79 INTERNATIONAL SCOUT II
05 SCION XB SERIES RELEASE 2[#437]
95 Chevy C3500 dually
98 Ford E150
Link to Kelly J. Nolte 3/20/53 - 11/6/08
https://time-zonelabs.blogspot.com/p/about-kelly.html
DEATH TO CHINGERS!
[From a military recruitment poster in the novel "The Stainless Steel Rat" By Harry Harrison] |
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damicotile Samba Member
Joined: September 16, 2004 Posts: 1069 Location: WOODLAND CA.
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Posted: Mon Oct 25, 2010 6:50 am Post subject: |
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The copper ones I've used have that raised ring near the center. I think that time I didn't get them parallel so I went with the plain paper ones which seemed to seal well but then when I took the header off again they just crumbled so I thought they were crap. I went to bugformance and got the Vanagon gaskets which are on it now but it pops on deceleration so I am going to change them out. These are the ones I had to retighten.
Well, my kid retightened them
I haven't tried the RTV yet except where the muffler meets the header like Tiger suggested.
I'll just go get those Vanagon ones and try them again.
I do use a rubber mallet to seat the tubes before I cinch them down.
I have some Tims stage 2's coming soon, i'll do it then.
Thanx guy's. _________________ '73 SB
82x94
W-120 w/ CB light weight lifters
Silicon bronze sleeves
Scat 1.25:1
CB H-Beams
Straight cuts
42x37 Steve Tims
44 IDF's
9.2:1
A-1 Sidewinder coated
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