Leak in ZZR250 Muffler

**justsomeguy** · 30th June 2005, 17:42

Hi there,

My right muffler has started to leak recently and I can feel a loss of some mid range acceleration.

Could I get away with simply welding the hole shut?? Intend to get a replacement muffler later.

Who would be the best person to repair it??

Any idea how much a new muffler will cost?? Or a second hand one from the wreckers??

I can't seem to think of any damage being caused by riding around like this but am I doing any damage by riding with a leaky muffler??

Look at the pic for the leak location (pic not my bike)

**John** · 30th June 2005, 17:46

http://www.trademe.co.nz/Trade-Me-Mo...n-29979997.htm

Sorted, but it maybe something more serious - is it eating alot of fuel lately...?

**tl_tub** · 30th June 2005, 17:53

Is that leak coming from a weld? Is it actually a hole or a stress crack? Exhaust leaks are easy to weld up as long as the steel is a decent thickness. Depending on where, and how big it is it is, you might be able to do it without removing the exhaust.

**justsomeguy** · 30th June 2005, 18:02

Originally Posted by John

http://www.trademe.co.nz/Trade-Me-Mo...n-29979997.htm

Sorted, but it maybe something more serious - is it eating alot of fuel lately...?

Hmm.....even if I had the $160 - I'm not paying that for that piece of Sh*t.....

But thanks for the heads-up

**justsomeguy** · 30th June 2005, 18:03

Originally Posted by brent_b

Is that leak coming from a weld? Is it actually a hole or a stress crack? Exhaust leaks are easy to weld up as long as the steel is a decent thickness. Depending on where, and how big it is it is, you might be able to do it without removing the exhaust.

Haven't had a proper look under there..... will go have a look now

**DingDong** · 30th June 2005, 18:16

If its on a seem, get it welded, if not get it brased... any weld shop would do for $10 or so...if they charge more go somewhere else.
Surely a member in your area can do it for free... it's a 2 minute job.
Note: it will break again if you weld, brasing will last longer.
I cant see how a crack would release enough back pressure to affect the mid-range?

**geoffm** · 30th June 2005, 21:17

If you want to pull it off, I can probably weld it up for you, depending on what is left of the metal.
Geoff

**justsomeguy** · 30th June 2005, 22:10

Ummm.......

My exhaust is supposed to leak - got the same hole - yes it's a man made one on the other side too.....

So that means I have another reason for loss of mid range pull - oh well.....

Maybe it's all in my head - cos the problem occurs at random......

Sorry for the mix-up

**Mr Skid** · 30th June 2005, 22:52

If it's a factory feature I'd guess it's to allow water to drain out of the exhaust, thus preventing it rusting it's way out.

**N4CR** · 30th June 2005, 23:03

What you loose in midrange you gain in top end

A small hole like that wouldnt be enough backpressure loss to make a difference at all. Replacing a bolt that fell out of my can and filling the hole did NOT make any difference to my bike when I had my stock can.... Not that it would with an empty can later on

Go get it checked by a mech... all I can reccomend.

**justsomeguy** · 30th June 2005, 23:12

It's time for a tune up/service - a few too many 13,000rpm 6th gear rides by an inexperienced rider.....

And as for top end - I'm barely doing 145-150 ..... Others reckon I should be getting more....

**John** · 30th June 2005, 23:14

nah thats about right. I'd get 160 on a very very very good day and I'm small.

IIRC Mine had them to and dripped - makes sense as its full sealed and colder mornings etc etc so blah blah dont worry about it

**justsomeguy** · 30th June 2005, 23:18

Originally Posted by John

nah thats about right. I'd get 160 on a very very very good day and I'm small.

IIRC Mine had them to and dripped - makes sense as its full sealed and colder mornings etc etc so blah blah dont worry about it

Thanks - so when we having that great north ride again??

Sometime late July - early August??