hot exhaust fumes

okcoky · Post by **okcoky** » Sun Jun 01, 2008 4:47 pm

hi,dont know if i have a problem or not but when my bike was on the side stand today i noticed more smoke comming out of one exhaust than the other.I also noticed that the air was hotter comming out of it.The bike is running fine and have only just had honda service it and they balanced the carbs at the same time.When i say smoke i dont mean thick i mean just the normal little bit.Both cylinders see to be fireing fine and the bike goes and sounds as good as usual.Could it just be that it was on its side stand.I had just completed a 40 mile journey on it so it was well warmed up.It had just got drenched in the rain though.Any help appreciated.

fishface · Post by **fishface** » Sun Jun 01, 2008 5:29 pm

by smoke i hope you mean condensation (steam vapour)

adfski · Post by **adfski** » Sun Jun 01, 2008 5:51 pm

I think it's normal to get a different output from the two pipes. But as fishface says it had better just be moisture or you is burning oil!

I'm sure its fine though.

okcoky · Post by **okcoky** » Sun Jun 01, 2008 6:15 pm

Yes i mean steam vapour,but why is one hotter?Any ideas?

Beamish · Post by **Beamish** » Sun Jun 01, 2008 6:25 pm

Length of pipe from cylinder may affect heat properties (one is significantly longer) ,mine does the same in some weathers. No biggy as long as it is running well.

bikerpiker · Post by **bikerpiker** » Sun Jun 01, 2008 6:53 pm

My triumph was the same,it had a 4 into 2 fitted,not only was one side slightly smokier,it also got very slightly warmer to the touch ,more quickly than the other side,when started from cold.

Very apparent in the winter when the exhaust gases were more visible,hardly noticeable in summer apart maybe from startin from cold

Ran it nearly 4 years no probs,,,,so id say Dont worry aboot it

okcoky · Post by **okcoky** » Sun Jun 01, 2008 8:29 pm

Thanks for the peace of mind guys and gals.Jesus i sounded like jimmy saville then.lol.

Stratman · Post by **Stratman** » Sun Jun 01, 2008 9:36 pm

I agree with what everyone else has said and mine has always done the same too.

Dean O · Post by **Dean O** » Sun Jun 01, 2008 10:13 pm

I queried my SP1 running hotter on the rhs can with the guy who dyno'd it - its normal apparently

tony.mon · Post by **tony.mon** » Mon Jun 02, 2008 9:13 pm

If yuo remove the right hand side can then look into the 1-2 link pipe you'll see that a part of the pipe protrudes into the tube at the join about 2" in. This (as you can see by looking at previous threads) is to do with balancing the can pressure at full chat.

Some people (me included) ground out the protruding bit, can't say I noticed a difference but the I'm running straight through carbon cans which don't restrict anything anyway.

But even with this ground out, the can pressures are different.
I assume that it's a result of one link pipe bending a lot more than the other.

Nuffink to worry about, anyway.

okcoky · Post by **okcoky** » Mon Jun 02, 2008 9:47 pm

Cheers again folks.