Print Page - Header mounting nuts obsolete. Replacement?

Title: Header mounting nuts obsolete. Replacement?
Post by: coreyoreo on November 03, 2011, 11:08:34 PM

Hi all again. I need a couple of header nuts, specifically Yamaha part #90179-08345-00 NUT,SPEC'L SHAPE But, alas, they're discontinued.

Can I use standard hardware store nuts or is there a special kind of heat-resistant nut I should use instead?

Thanks for any help once again.

Best site ever!!

Corey

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: ninjamuder on November 03, 2011, 11:13:04 PM

check with a bolt/nut supply house.....get some metal tabbed flange face nuts....they have a metal locking insert that isnt affected by the heat

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: coreyoreo on November 03, 2011, 11:19:10 PM

Thanks, N/M.

I'm seeing flanged copper exhaust locknuts advertised also. Would these work as well?

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: ninjamuder on November 03, 2011, 11:21:54 PM

yeah, i would just make sure the threads are clean before i install em,..also, since copper is soft,. make sure you dont over tighten them, and amke sure to use a little bit of anti-seize on the threads

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: coreyoreo on November 03, 2011, 11:25:18 PM

Great!! That works for me!! :i_am_so_happy:
Thanks again, N/M!!

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: Harvy on November 03, 2011, 11:45:07 PM

Copper might be a bit soft, but brass nuts in (I think) 12mm x 1.25 would do the trick.

Harvy

Title: Re: Header mounting nuts obsolete. Replacement?
Post by: racerrad8 on November 04, 2011, 03:01:59 PM

You can find the flanged steel header locknuts here; Header Lock Nut (http://www.rpmracingca.com/proddetail.asp?prod=Exhaust%3AH%2FN)

Randy - RPM

FJowners.com

General Category => Maintenance => Topic started by: coreyoreo on November 03, 2011, 11:08:34 PM