Tried Autosol and elbow grease..........amazing results, it shines like new 
radrod
Registered user
Engineer said:
By keeping the exhaust hotter (less dense air) you can flow it faster throughout the system thus increasing efficiancy. Does anyone do ths anymore? Im trying to find a picture of what im talking about.
BiG DoM
Registered user
radrod said:
On the SS headers that BMW seem obsessed with fitting these days (those that go that excretion brown colour quite quickly) I believe the answer is ceramic coating...inside and out...scavenges the gasses out more quickly, does not get as hot and does not discolour. You get a near chrome finish that is great,may dull slightly but comes right back real easy with Autosol.
Powerkote did mine in RSA, and they are franchised I believe...the finish was Cerakrome.
Amstel_Stu
Registered user
chrome pipes
Hi ordered chrome when I picked up GSADV, silencer is the only real nice bit too look at, but only when you have the panniers off. And it gets dirty quickly so you have to keep cleaning it from the crap off of the road.
Hi ordered chrome when I picked up GSADV, silencer is the only real nice bit too look at, but only when you have the panniers off. And it gets dirty quickly so you have to keep cleaning it from the crap off of the road.
Pipster
Registered user
Pukmeister said:Tried Autosol and elbow grease..........amazing results, it shines like new
I'll second that Autosol the way to go, 6000 miles allweather riding and my stainless can looks like new...
Leave chrome where it belongs on choppers and retros
Bibendum
Guest
Chrome
Chrome for me - 10k miles in - all weather riding no problems - and they look like new with that blue rainbow appearance. better than the shit brown the stainless goes...
Chrome for me - 10k miles in - all weather riding no problems - and they look like new with that blue rainbow appearance. better than the shit brown the stainless goes...
R1200GSA
Registered user
Quote:
Originally Posted by Engineer
Surley you would want to remove the heat from the exhausts ports as efficiently as possible - not keep it in with insulation - increased chance of overheating the exhaust valves on a air-cooled engine - sounds very dodgy - or am I wrong?
By keeping the exhaust hotter (less dense air) you can flow it faster throughout the system thus increasing efficiancy. Does anyone do ths anymore? Im trying to find a picture of what im talking about.
This principle is something which is used throughout sprints, hillclimbs, race and rallying, however i have not seen it appear on motorcycles, perhaps due to the size of the systems and the possible gains to be had? 
Originally Posted by Engineer
Surley you would want to remove the heat from the exhausts ports as efficiently as possible - not keep it in with insulation - increased chance of overheating the exhaust valves on a air-cooled engine - sounds very dodgy - or am I wrong?
By keeping the exhaust hotter (less dense air) you can flow it faster throughout the system thus increasing efficiancy. Does anyone do ths anymore? Im trying to find a picture of what im talking about.
This principle is something which is used throughout sprints, hillclimbs, race and rallying, however i have not seen it appear on motorcycles, perhaps due to the size of the systems and the possible gains to be had? st247
Registered user
pomm001
Registered user
BiG DoM said:
Interesting thought,
how does the ceramic coating 'bind' to the stainless steel
if the stainless pipe is 'sandwiched' between the inside and outside ceramic how does it expand and contract with heat when the ceramic has a far less expansion ? how does the coating handle the vibration ?
do they have a money back garantee
I am not taking the p*ss ,as an engineer it seems too easy
The normal way out of this dilema would be to have a double skin pipe with an airgap between, with the chrome on the outside and the stainless in the middle
BiG DoM
Registered user
pomm001 said:Interesting thought,
how does the ceramic coating 'bind' to the stainless steel
if the stainless pipe is 'sandwiched' between the inside and outside ceramic how does it expand and contract with heat when the ceramic has a far less expansion ? how does the coating handle the vibration ?
do they have a money back garantee
I am not taking the p*ss ,as an engineer it seems too easy
This is NASA technology as I understand it and used on space shuttles and is on F1 race cars, BKMW motorcycles
they prep the SS by sandblasting, spray on the coating and cure through various heat cycles. My pipes have a black flow coating on the inside to assist gas scavenging and then the chrome look outside. This stuff is TOUGH and will never polish off. Seems popular in USA - do search on the Advrider site for 'ceramic coating'. There are a number of comapnies doing it there including Techline ... as an engineer you will appreciate its many industrial applications. The RSA site: http://www.powerkote.co.za/
The normal way out of this dilema would be to have a double skin pipe with an airgap between, with the chrome on the outside and the stainless in the middle
Re your last comment - I know the 1200 Cruiser ios meant to have double skinned headers but my 1150 had single wall stainless chromed headers... I know that chroming stainless is not meant to be easy but BMW obviously devised a successful way. I believe the move toward SS as standard is driven by EU environment legislation...chroming must produce multo toxicity or something?
Pipster
Registered user
Smeggy said:
The only option Bmw offer is Chrome or Stainless silencer/can ,The headers and cat do not change. My headers are same as yours and I had stainless
option...
Sure if you chrome lovers looked you could possibly find Chrome Ape hangers,Sissy bars, and maybe leather luggage with chrome studs...
kbada
Registered user
Pipster said:The only option Bmw offer is Chrome or Stainless silencer/can ,The headers and cat do not change.
Sorry Pip, my 4 week old 2006 has a chrome system from front to back
It took all of 2 days to go blue, and I think it looks the dogs dangles 'specaially when compared to the crap straw colour the SS system my last 1200 had went
Pipster
Registered user
Humble pie
Kbada
Seems that I've been misinformed and need to eat some humble pie; I too have a 2006 1200. When I bought it I asked the question about the chrome exhaust and was told that it's just the silencer thats available in chrome.
Not that it bothered me as I'd made my mind up on the stainless and to be honest, my headers don't look much different to the photo above. I'd agree that they have gone the straw colour but with the use of Autosol they shine like the day it left the showroom.
I'd post a photo if I knew how to do it....
I'm away camping with some of the guys off the list this weekend; if anyone can tell me how to do it, I'll take a photo and post it.
Cheers
Kbada
Seems that I've been misinformed and need to eat some humble pie; I too have a 2006 1200. When I bought it I asked the question about the chrome exhaust and was told that it's just the silencer thats available in chrome.
Not that it bothered me as I'd made my mind up on the stainless and to be honest, my headers don't look much different to the photo above. I'd agree that they have gone the straw colour but with the use of Autosol they shine like the day it left the showroom.
I'd post a photo if I knew how to do it....
I'm away camping with some of the guys off the list this weekend; if anyone can tell me how to do it, I'll take a photo and post it.
Cheers
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