TOPIC: Exhaust gasket ?

Exhaust gasket ? 26 Apr 2015 20:42 #1

rod rayborn
Topic Author
Offline
Junior Member
Posts: 22
Thank you received: 7

I am replacing my exhaust system on my MKIII 850. The headers are 1-3/8" but flare out at the head where the exhaust nut is snug around the pipe flare....So, do I use the conical gasket--flat side against the header---curved side in the head so that it will seal
if the pipe is off slightly. Or do I need a different type gasket or nut?
Rod

Attachments:

Please Log in to join the conversation.

Exhaust gasket ? 27 Apr 2015 08:28 #2

dynodave
Offline
Moderator
dynodave
Posts: 450
Thank you received: 263

That flange is a typical flat 750 style. It needs a 750 style donut ring gasket that will become flat on installation. Your 850 exhaust rose will have threads that are to short to allow bottoming out.You will not need any 850 or MKIII hardware

So an early 750 nut will be needed. In 1973, the only year for a 750 thread length rose, that is also of big fin style... like the 850s, could be used for a cosmetically correct.exhaust rose.
BCS had these on sale a while back. I don't think they knew what they were!

Please Log in to join the conversation.

Dave Comeau
atlanticgreen.com/contact.htm

Exhaust gasket ? 27 Apr 2015 12:50 #3

rod rayborn Topic Author Offline Junior Member Posts: 22 Thank you received: 7	Hey Dave, Do you know the part # for the rose and gasket...I don't have a 73 parts book Thanks, Rod Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable.
	Please Log in to join the conversation.

Exhaust gasket ? 27 Apr 2015 16:54 #4

dynodave Offline Moderator dynodave Posts: 450 Thank you received: 263	rose 750 NMT10892 or 06-2464 O-ring gasket NMT2166 or 06-3253 rose 73 750 06-3555 O-ring gasket 06-3995 rose 850 06-3988 Check this box to be notified of replies to this topic. Note: BBcode and smileys are still usable. The following user(s) said Thank You: KenH
	Please Log in to join the conversation. Dave Comeau atlanticgreen.com/contact.htm

Forum

NNENO Tech Forum

NHT supporting systems & components

Exhaust gasket ?