Exhaust Nuts

[BowlingSS]

Is there a reason Yamaha used the barrel nuts on the exhaust? The ones that were on mine were really bad looking. I replaced them with SS nuts and washers.
I saw someone on Ebay selling one barrel nut for $10.

Bill

[crazy steve]

Originally Posted by BowlingSS

Is there a reason Yamaha used the barrel nuts on the exhaust?

Yep... The stock head pipe flanges has recesses for the nuts and a standard nut won't allow you to get a wrench on them. If you have an aftermarket exhaust with no recess you can use standard nuts...

[jetmechmarty]

I have stainless acorn nuts on mine. They were slathered with plenty of anti-seize compound before installation.

[BowlingSS]

Originally Posted by crazy steve

Yep... The stock head pipe flanges has recesses for the nuts and a standard nut won't allow you to get a wrench on them. If you have an aftermarket exhaust with no recess you can use standard nuts...

My pipes are Jardines. That is why I did not see a reason.

Thanks.
Bill

[BowlingSS]

[jetmechmarty]

Bill,

Put some anti-seize on those nuts. Stainless has a strong tendency to gall when used like that.

[BowlingSS]

Originally Posted by jetmechmarty

Bill,

Put some anti-seize on those nuts. Stainless has a strong tendency to gall when used like that.

Thanks for the info.

Bill

[RichV]

Sorry I'm late for this discussion but I purchased the Allen Nuts from here:

http://www.boats.net/parts/detail/ya...-08004-00.html

for $2.52 each. They worked great.

[BowlingSS]

Originally Posted by RichV

Sorry I'm late for this discussion but I purchased the Allen Nuts from here:

http://www.boats.net/parts/detail/ya...-08004-00.html

for $2.52 each. They worked great.

What year did you use- 1978? I did not see 1980.

Thanks.
Bill

[RichV]

I bought them for an 81 XS1100SH. That model is not listed but they worked and looked fine.

[crazy steve]

The '78-79 OEM exhaust nuts were chrome and needed a 6mm allen wrench. The '80-81 nuts were only zinc plated and needed a 8mm wrench.

[BowlingSS]

Originally Posted by jetmechmarty

Bill,

Put some anti-seize on those nuts. Stainless has a strong tendency to gall when used like that.

Thanks I will. I have to take them off soon anyways.

Bill