decoking end cans

NOSHER · Post by **NOSHER** » Fri Jul 17, 2009 3:15 pm

i`ve got S pipes and end cans on my 1 and the end cans feel really heavy and are oily---is the baffle tube made to be removed for degunging??

if not any suggestions non damaging to the alloy casings of ways of removing the buildup of crud and carbon inside the cans?

COME ON YOU GUYS I CAN`T BELIEVE NOBODY HAS EVER DECOKED HIS END CANS AND JUST THROWS THEM AWAY AND BUYS NEW ONES.SOMEONE OUT THERE NOWS THE ANSWER OR IS IT A DEADLY SECRET PUNISHABLE BY EXPULSION FROM THE SITE!!!!

Dixon Bainbridge · Post by **Dixon Bainbridge** » Wed Sep 16, 2009 8:36 am

There has been a couple of posts about de-coking the cans and the expansion chambers, try a search to find them.

Basically from what I have read, to clean the chambers use caustic soda, and to clean the cans you can burn the carbon out using a bon fire or similar. Haven't tried the bon fire method though. DO NOT USE CAUSTIC FOR CANS! Aluminium dissovles in caustic soda, as has been said many time on this forum.

falconman · Post by **falconman** » Wed Sep 16, 2009 6:18 pm

After cutting a set open I think the best way to clean them is first use paint stripper (or similar) to remove carbon buildup then flush a few times with lacquer thinner (or similar) to clean out the oil in the fiberglass packing. Basicly plug one end, fill with stripper then plug other end. Leave it in overnite, drain, then flush with thinner.

Bogan · Post by **Bogan** » Sun Feb 13, 2011 4:35 am

Is the baffle removable on KR250A? This diagram shows it as 18046-1062 separate part, do I have to soak it in WD40 for years then try to prise it out?

http://www.kr250.org/parts/KR250A-4_big.jpg

Cheers,

Tony

falconman · Post by **falconman** » Sun Feb 13, 2011 6:32 am

From that pic the number you give is a sleeve. It appears the cans are one with the pipe and have a decorative cover with the sleeve inside the cover.

Bogan · Post by **Bogan** » Sun Feb 13, 2011 7:51 am

OK thanks, what sort of sleeve? Should I just block the end up and fill the whole thing with NaOH?

falconman wrote:From that pic the number you give is a sleeve. It appears the cans are one with the pipe and have a decorative cover with the sleeve inside the cover.

ScottaKR · Post by **ScottaKR** » Sun Feb 13, 2011 10:39 am

Bogan wrote:OK thanks, what sort of sleeve? Should I just block the end up and fill the whole thing with NaOH?

The sleeve is an alloy item and just slips over and uses screws to hold i in place over the silencer. I'd just plug up the end and fill the whole thing with caustic. the only reason people dont do KR1S cans like this is cause it will eat the alloy.