K11 Owners Group

kirkkw · Posted: Mon Jun 27, 2011 5:45 pm Post subject: Installing new exhaust

In anticipation of installing my new/used Staintune exhaust, what problems should I anticipate and prepare for?

Should I buy some new header bolts and nuts in advance expecting that some of them will be frozen together?

Or is it best practice to replace all the header bolts and nuts after removing the header?

Ken
_________________
1996 K1100RS, 1976 CB750A, 2017 Triumph Trophy, 2020 R1250RT, 2022 RE Classic 350

SugarHillCTD · Posted: Mon Jun 27, 2011 9:00 pm Post subject:

Ken,

Last time I removed the exhaust of my departed '93 K1100RS, 4 of the nuts came off easily, 4 had the nuts on solid- they effectively became bolts since the stud came out with the nut.

IMHO and if possible I would replace all 8 studs and nuts. Plus 4 new copper gaskets.

John
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

Scott_Anderson · Posted: Mon Jun 27, 2011 11:10 pm Post subject:

kirkkw · Posted: Tue Jun 28, 2011 12:47 am Post subject:

drikko · Posted: Tue Jun 28, 2011 12:55 am Post subject:

Get some high temp anti seize for the exhaust nuts. Pretty sure I saw some specifically for hot (exhaust) nuts the other day.
_________________
K1100RS '97
Laverda RGS 1000 '84
Jim Young Trailer Sailer 5.7M WB

DISCLAIMER:- Anything I say may have been when I was drunk so please don't take it personally.

'Bigamy is having one wife/husband too many. Monogamy is the same.'
Oscar Wilde

Number 6 · Posted: Tue Jun 28, 2011 7:12 am Post subject:

Flying Duck · Posted: Tue Jun 28, 2011 12:36 pm Post subject:

You might have trouble getting the O2 sensor out. Try some penetrating oil and/or heat to break it free.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Number 6 · Posted: Tue Jun 28, 2011 2:08 pm Post subject:

Flying Duck · Posted: Tue Jun 28, 2011 2:28 pm Post subject:

I've always been under the impression that it's either got both or neither. But I'm not an exhaust expert.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Number 6 · Posted: Tue Jun 28, 2011 2:29 pm Post subject:

Flying Duck · Posted: Tue Jun 28, 2011 3:33 pm Post subject:

You'd need a different wiring harness and Motronic. Exhaust too - one with a port for the O2 sensor like the Staintunes and Remus' have.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Number 6 · Posted: Tue Jun 28, 2011 3:36 pm Post subject:

Flying Duck · Posted: Tue Jun 28, 2011 3:38 pm Post subject:

I've got Staintunes on my bikes. The O2 sensor is in the exhaust can after the collector.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

gladstone · Posted: Tue Jun 28, 2011 6:03 pm Post subject:

If you break one stud off in the head and you're using an original exhaust with a fixed flange you can get away with it being held in place by one nut. I'm sure there are a load of reasons why you shouldn't but mines been like this for two years!

On my other LT I think I've broken two studs - luckily from different cylinders and on opposite sides.

On the one with one broken it's on cylinder 2 and I've rigged up a piece of angled steel to bolt to the two adjacent cylinders and provide some support.

Cheers
_________________
1993 K1100LT (x2!)
1998 R1100R - gone
1994 R1100GS - gone
1990 K100RS 16V - gone

dwerbil · Posted: Tue Jun 28, 2011 8:06 pm Post subject:

I took off the Remus on my K1100RS and replaced it with a stock muffler. The only parts used were the two dollar a 4 pack copper ring gaskets. I never considered trying to remove and replace the header bolts.

This was done about a year ago. No problems at all since then.
_________________

93 K1100RS ~ 2004 R1150RT ~ 84 RS ~ 78 R100/7 ~ 65 R60/2
Click for pics
Randy at Round Rock, Texas

Scott_Anderson · Posted: Tue Jun 28, 2011 10:09 pm Post subject:

When I removed my stock exhaust and found 2 broken pipes at the collector, I had a 50/50 mix of nuts and studs that came off.
I seriously considered trying to remove the remaining studs and replacing them with new but I decided at the time to leave sleeping dogs lie and not end up with a broken one. I'd wait and tackle it another day.
_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

Tim (Midland Section) · Posted: Wed Jun 29, 2011 6:34 pm Post subject:

Unfortunately the studs have a habit of snapping in use. When I had a cracked pipe on my exhaust (muffler) there were 2 studs missing, snapped off level with the head. I drilled same & re-tapped.
Any studs that would come out EASILY were replaced, the others like Scott, were left. All nuts were renewed & copperslipped, in case it did any good in the future Laughing

Apparently the cause of cracked pipes is the hardening of the rubber mount, which allows road vibration to be transmitted to the exhaust which work hardens. DO change the rubbers about £2 (€4).
HTH
_________________
Regards Tim,

Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
#485

Number 6 · Posted: Thu Jun 30, 2011 5:31 am Post subject: