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Posted by: ctc911ctc Mar 2 2020, 08:38 PM

Took the exhaust system off of the car

------ '74, 2.0L all stock -------

to replace a stud (see my last post on the lost stud) I wanted to get new nuts to go with the new studs so i researched and bought brass nuts advertised by EMPI

The ones I took off are steel with copper thread inserts, I have no experience with either, thoughts?

Posted by: yeahmag Mar 2 2020, 09:42 PM

I like the 11mm heads (on 8mm) nuts for exhaust and carb manifolds. I always use a bit of anti seize too.

Posted by: jmitro Mar 2 2020, 10:32 PM

ha. less than 2 minutes ago I placed an order for some exhaust manifold nuts/ studs/ time sert repair.

I used this thread for reference, and bought the ACN nuts linked in the thread
http://www.914world.com/bbs2/index.php?act=ST&f=2&t=286730

Posted by: IronHillRestorations Mar 3 2020, 08:26 AM

You want a flange nut. They are much stronger than a nut with a washer, as well as easier to use.

You do not want a prevailing torque (locking) fastener as they will make the exhaust studs back out. There are prevailing torque copper coated flange nuts that are used on other German cars (BMW I think) that often get sold for our cars. I've used these as well, after running a tap through them.

Posted by: VaccaRabite Mar 3 2020, 12:06 PM

Don't use the common copper colored "exhaust" nuts. Really hard on your head studs.

Do use the thin profile 8mm nuts that can be found at Belmetric and McMaster Carr. If you can find them flanged thats even better.

Zach

Posted by: porschetub Mar 3 2020, 01:01 PM

I used the BMW ones on my 6 motor and on a 4,found them very good and they don't come loose,bought them off Pelican and seem to remember they were cheap enough,good solution.

Posted by: mepstein Mar 3 2020, 01:38 PM

something like this works well.


Attached image(s)

Posted by: ctc911ctc Mar 3 2020, 02:43 PM

Has anyone used nuts made of brass like the ones in the picture below????

Just curious, not trying to stir the pot!

Posted by: JamesM Mar 3 2020, 11:22 PM

but i like these 8x10 flanged nuts even better!

http://vwparts.aircooled.net/ACN-Flanged-Racing-Intake-and-Exhaust-Nut-8-x-10mm-p/acn-nuts.htm

Really handy to keep your socket from wedging against your exhaust when tightening, especially with headers. Added bonus, the flange keeps the nut from sliding down in your socket before you get it on the stud. I never thought I would get so excited over a nut but I LOVE these things

Posted by: rhodyguy Mar 4 2020, 09:24 AM

NICE! I'm going to get sets for the HEs and intakes. Thanks.

Posted by: anderssj Mar 4 2020, 09:37 AM

Used the 8x10 flange nuts from air-cooled net when reinstalling my HEs a couple of months ago. REALLY nice pieces.

Posted by: StarBear Mar 4 2020, 03:54 PM

This forum is tops - such experience even for a set of nuts! Best source of info.

Posted by: ctc911ctc Mar 5 2020, 03:32 PM

It's not the nuts, it's the Nuts talking about nuts!