exhaust header dent

[GQ89]

I managed to to put a 2 cm dent in one of my header pipes at the bottom bend. It does not seem to have affected anything yet but I expect that airflow would be fairly disturbed. Should I be concerned?

mark

[Mincehead]

Not really,unless you notice a marked reduction in power I wouldn`t worry too much about it,personally I don`t think you`ll notice anything apart from the fact you can see it and it annoys you just being there.

[cobbadiggabuddyblooo]

Now I remember a comment on a cure for such a problem was to fill it full of water and put it in a freezer ..This will do the trick and pop the dint back out again...Just take the headers off the bike first tho

[Mincehead]

Being stainless steel you could also weld a stainless bolt head to the dent,then by using a slide hammer on the bolts threaded section pull/dress it back out too.Obviously you would also need to grind the bolt back off and re-polish the pipe.
Lot of trouble for aesthetics though .
If it`s not causing any problems just leave it alone is my tip.Alternatively use exhaust wrap to cover it up

[BigAl-TC]

I'm trying to find someone nearby with a freezer big enough that don't mind me putting my std headers in. When i find a willing participant, i'll let you know if it works.

Cheers, Al.

[GQ89]

the freezer sounds interesting. I think i will wait to see if someone else tries that one first. In the meantime, the dent gives it character

[dandywarhol]

When you see the size of an O2 sensor in the 900 motor you'll know about obstructions in the system - must get round to making a blanking plug for mine sometime.

[Mincehead]

Is it in the pipes,not had a close look around the 900 TDM motor?
Yes if it`s there disturbing flow and it could just as easily be blanked off,I think I would be blanking it off too.
But wait,is it constantly monitoring O2 for the EFI system?

[dandywarhol]

It protrudes into the downpipe just before the silencer. I have Akras/Power Commander setup so the O2 sensor is disconnected - just need to find a big enough bolt to plug it.............................

[Mincehead]

Should be a standard metric thread,you`ll have to get it out and get a thread guage on it.Mind knowing the Japanese it might be metric fine pitch.One of the UK`s fastener suppliers should be able to help,Inox are a good company:

http://www.inoxgrp.co.uk/homepage.htm

http://www.inoxgrp.co.uk/pdf%20files/Br ... _06_01.pdf

Just another wee job in the never ending motorcycle modification game.

[Kayla]

When you see the size of an O2 sensor in the 900 motor you'll know about obstructions in the system - must get round to doing away with the infernal electrickery and fitting a cdi and some FCRs...

I fixed that for you

[dandywarhol]

When you see the size of an O2 sensor in the 900 motor you'll know about obstructions in the system - must get round to doing away with the infernal electrickery and fitting a cdi and some FCRs...

I fixed that for you

Lol .............got to say it works really well with a Power Commander - pulls easily from 2500 cleanly to 9000 and makes a healthy 69 wheel bhp @5000 - just where you want it......................

[rocket60]

Not having seen the O2 sensor in your TDM I am going on what I was told to get rid of the KTM one when I put new pipes on mine.That is it is a pipe fitting and that any plumbing supplie co. that handles stainless fittings will have a plug that fits.

[dandywarhol]

Not having seen the O2 sensor in your TDM I am going on what I was told to get rid of the KTM one when I put new pipes on mine.That is it is a pipe fitting and that any plumbing supplie co. that handles stainless fittings will have a plug that fits.

Thanks for all the replies - sorry to have hi - jacked the thread.............

[GQ89]

a bit of colateral damage. When I smacked the pipe I must have weakened the weld which holds the passenger footpeg and the exhaust pipe onto the frame. Exhuast pipe is held on with a cable tie for now until I can get it repaired.