SV1000 exhaust temp different

**paturoa** · 27th April 2006, 22:57

Help please

I've got a SV1000S K3 with Micron cans

Anyway, a while back I noticed on start up that the left hand pipe exhaust temp is cold compared to the right hand. Even when hot the left hand exhaust temp is quite cold in comparison.

So off I trot to Colemans and get it checked. The mech said did checks, didnt say which, but everything was fine. (Bloody cheek - I'm still angry, he did an oil and filter change without asking and charged me for 1.5 hours labour as well). He said TLs are the same, but colder on the right hand pipe.

Well I'm becoming not so sure now as it has now started to backfire / cough when I blip the throttle on a down change AND the warranty expires next month.

Anyone else's run cold on one side?
Anyone else's backfire / cough on bliping the throttle on down chage?

**onearmedbandit** · 27th April 2006, 23:07

They did work without you asking for it to done?? I'd tell them to shove their bill. What did you ask them to do? A 'once over'? Or did you instruct them to only inspect why the exh temp was different?

**paturoa** · 27th April 2006, 23:12

I just asked them to check the exh temp and the horn which was crapy. I said check under warranty.

I've already paid.

It was all a bit too casual for me and will be going elsewhere in the future.

**imdying** · 27th April 2006, 23:31

Check SpankMe's profile... there's a link to his SV1000 forums. It's normal for one side to be colder, as one has further for the gasses to travel (longer pipe). Heaps of people have asked the same question.

If you've got free flowing pipes, it will crackle and pop on down changes. The 03 with TRSs I rode did it heaps. My 06 with Microns does it rarely

If you want to fix the popping, you'll need to do the PAIR mod, which eliminates the system that adds air to the exhaust gasses. I'd like mine to pop a little more, but they haven't got a mod for that yet

**paturoa** · 27th April 2006, 23:36

thanks all - i fell much better now, and thanks also to those who PM'd me

Now all i need to do is get it ready for the brass

http://www.kiwibiker.co.nz/forums/sh...ad.php?t=28176

**paturoa** · 27th April 2006, 23:39

ah, yes I'll check the flanges, seem to remember seeing that somewhere else, thanks.

**u4ea** · 27th April 2006, 23:47

what fuel are you using??hopefully 96 or 98 should give a better life on the pistons,91 is causing combustion ..................

**paturoa** · 28th April 2006, 00:28

91, it pinks a little with throttle at low revs.

causing combustion ............. What?

**u4ea** · 28th April 2006, 00:46

the 91 isnt burning properly apparently is only about 89 so means we are getting ript big time.gunging up pistons so residual is causing a "combustion" and i am no rocket scientist but listning to the guys what are having major engine trouble on their sport bikes i am just passing on what i understand

**Pussy** · 28th April 2006, 00:58

Originally Posted by u4ea

the 91 isnt burning properly apparently is only about 89 so means we are getting ript big time.gunging up pistons so residual is causing a "combustion" and i am no rocket scientist but listning to the guys what are having major engine trouble on their sport bikes i am just passing on what i understand

I think "Detonation" is the word you are looking for. It's an explosion of the fuel/air mixture, as opposed to an even flame front

**tl_tub** · 28th April 2006, 07:15

As I see it you only have one choice, go to a single sided exhaust like my tls

**imdying** · 28th April 2006, 08:55

Only use 91 in mine, never pinks at all. Many of the guys in the states use 89 in their bikes with no problems... but I think they measure their octane slightly differently, and their 89 is about 91 in our terms anyway. But yeah, 91 works great in my SV (i.e. no pinking).

**craigs288** · 28th April 2006, 11:48

A mates small and occasional backfiring on his TLR turned into a constant and booming backfiring under closed throttle.

Turned out to be a leaking flange where the rear pipe clamps on near the head. Sounded bloody impressive.

**paturoa** · 28th April 2006, 12:09

Had a play this morning on the way to work and as far as i can tell it is more a cough / backfire thru the thottle bodies, than a backfire thru the exhaust.

If it is I should be able to find residue / soot in the throttle bodies. I'll drop off my air cleaner on Sat and run my finger down the inside to check for soot. I'll also check the flanges.