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STAINLESS NUTS ON EXHAUST MANIFOLDS?

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Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 ·

#285144
Can anyone tell me if it is OK to use stainless steel nuts on my beetles exhaust manifold (where it bolts to the heads)? Or does it create problems like reactions to the other metals etc? Is there a particular grade of stainless I should use?
Advice will be greatly appreciated.
Cheers SAS:duh
PS. hope everyone had a good chrissy.
Calling all NSW Mid North Coast Veedubbers

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Mid North Coast VW

sax Insano Dub Head

846 posts · joined Mar 2004 ·

#285151
No problem at all. No need to worry about special grade bolts, any stainless will do and they dont rust. No great issues with reacting with other metals but use anti seize on them as you put them on, every bit helps.

Just be aware of the difference in hardness between the mild steel, alloy, and stainless stuff on your car and dont muder anything tight unneccesarily.
" You're not a team player "

speedster356 Plastic not Classic Racing

1,624 posts · joined Aug 2002 ·

#285152
I've used 316 s/s nuts with no problems. Like always, ensure you use a good quality antiseize, I use one that's nickle based.
Spyder-WISD 07-09-05 11.6s @ 125 MPH

Speedster-WISD Nats 05 14.4s @ 89 MPH

Jet cruiser-Coogee 22-09-05 900 deg C @ 110,000 rpm

Weaseling out of things is what separates us from the animals....................Except the Weasel.

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 ·

#285154
Thanks guys, where do I get nickel based anti seize from, Ive got "never-seize" will this be cool or not?
Cheers SAS
Calling all NSW Mid North Coast Veedubbers

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Mid North Coast VW

sax Insano Dub Head

846 posts · joined Mar 2004 ·

#285156
Probably do, the welding shops are good to find quality brands of this stuff. Supercheap auto will have it too.

You could always take the studs out and replace them as well, stainless the lot, including spring and flat washers. Or replace the studs with stainless allen key bolts.
" You're not a team player "

speedster356 Plastic not Classic Racing

1,624 posts · joined Aug 2002 ·

#285173
I would leave it as a stud, I wouldn't like the idea of having to remove the bolt out of the alloy head every time you wanted to take off the exhaust. Just asking for thread pulling out.:cussing
Spyder-WISD 07-09-05 11.6s @ 125 MPH

Speedster-WISD Nats 05 14.4s @ 89 MPH

Jet cruiser-Coogee 22-09-05 900 deg C @ 110,000 rpm

Weaseling out of things is what separates us from the animals....................Except the Weasel.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#285255
Hi

I use stainless Glen Lock nuts, normal stainless nuts tend to wind off due to vibration. They are expensive, but I have some that Ive used on my car for 16 years and they still look like new and unwind every time.

Steve

Dannyboy half man , half horse

2,306 posts · joined Jan 2004 ·

#285579
Shouldn't they be Brass?

Steve where could i buy some of the Glen Lock nuts from. I'm just about to bolt some new extractors on!

Cheers Dan:o
"If i had to explain you wouldnt understand"

The Lower Class

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#285600
I made some stainless steel studs from some stainless bolts I bought... I'm never going to drill out old rusted exhaust studs again...

Many years ago, I bolted a different exhaust manifold to a Mitsubishi L300 I had and I used spring washers and zinc plated nuts... it didn't take long for the spring to go out of the spring washers and the manifold came loose with many of the nuts undoing and falling off...

So, don't use spring washers on exhausts near the engine...
where it is Very hot... as the spring washers turn into "springless" washers.... 🙂🙂

Lee
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#285604
I forgot to ask - What is a Glen Lock NUT???

what are they made of??

How do they lock on??

any photos?

Lee
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

speedster356 Plastic not Classic Racing

1,624 posts · joined Aug 2002 ·

#285729
Yeah Glen Lock are great, just don't use on s/s v stainless as they tend to pickup.
Spyder-WISD 07-09-05 11.6s @ 125 MPH

Speedster-WISD Nats 05 14.4s @ 89 MPH

Jet cruiser-Coogee 22-09-05 900 deg C @ 110,000 rpm

Weaseling out of things is what separates us from the animals....................Except the Weasel.

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#285762
I agree with Dannyboy.
I prefer brass, no rust problems and if the studs rust they don't sieze to the stud like SS will. Brass is softer than the stud, not harder like SS so you damage the nut before the stud.
Brass nuts, SS star washers and plenty of antisieze is what I use.
😉

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 ·

#286014
We are all still waiting to hear what GLEN LOCKS are.:thumb
Calling all NSW Mid North Coast Veedubbers

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1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#286063
Hi

They are made by
James Glen Pty Ltd
Unit F2, 3-29 Birnie Ave, Lidcombe NSW 2141
ph: (02) 9737 5252

You can get them from most industrial fastener places. They have 2 blades (see picture) that grip the thread to stop them from undoing, which will happen with normal stainless nuts. I have only ever had one pickup the thread and luckly it was bolt and nut.

Steve

[Edited on 30-12-2004 by 1302Steve]

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Dannyboy half man , half horse

2,306 posts · joined Jan 2004 ·

#287314
So what shall i do? I will need to replace all the studs and nuts and any washers.

Does replacement studs , SS Glen nuts ( sounds funny!) and a ss flat washer along with anti seize for the studs sound right?

Cheers Dan😉
"If i had to explain you wouldnt understand"

The Lower Class

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#287316
Hi Danny

I just used stock studs & Glen locks with flat stainless washers with lashins of Never sieze.

Steve

[Edited on 3-1-2005 by 1302Steve]