What can it mean ?

[TheWrongTrousers]

On my 180 Jota after a good long run this week, bike cooling down and after half an hour I happened to touch the right hand exhaust header pipe right at the very top just near the head, and i noticed that the pipe was quite warm to the touch, the middle one noticeably cooler and the left hand pipe cooler still. Quite a difference from right to left.

I presume this must mean that combustion conditions are rather different in each pot. What can this mean I wondered. The bike goes brilliantly so its not a problem as such. Then again perhaps if there is an issue here it can be righted and it will go even better for all I know.

Coincidentally, the battery seems to have given up the ghost and no longer holds a charge. This may be entirely unconnected but I thought it worth mentioning.

Any thoughts anyone  ?

 

[Grant]

Any difference in exhaust colour?
When was it last serviced and valve clearances checked?
If it's overheating it could be blocked carb, tight valves or some other issue.
A blued downpipe would suggest overheating.

I use a thermocouple on the headers to check exhaust gas temperatures, an attachment for my multimeter, do you have anything like this?

 

[natm]

Maybe the wind was blowing from the left.

 

[CLEMTOG]

seconded

 

[TheWrongTrousers]

Thanks for the replies guys. Well, the exhausts are a nice straw colour and they all seem to me to be much the same shade of straw. The valve clearances were checked and shimmed about 10 years ago I guess, which is about 8,000 miles i should think. So, I suppose, it may be time to look at them again. i tend to think that because it starts on the button, goes nicely and ticks over perfectly that all is well inside.

No, Grant I do not have a thermo couple. I have not heard of one of those before !

 

[laverdas]

Thanks for the replies guys. Well, the exhausts are a nice straw colour and they all seem to me to be much the same shade of straw. The valve clearances were checked and shimmed about 10 years ago I guess, which is about 8,000 miles i should think. So, I suppose, it may be time to look at them again. i tend to think that because it starts on the button, goes nicely and ticks over perfectly that all is well inside.

No, Grant I do not have a thermo couple. I have not heard of one of those before !

it's the same thing as a PC on a old massey ferguson

 

[chrisk]

I like the wind direction theory...... but, I fear your bike is shagged. It will cost a fortune to repair, I can save you some money. Send bike to me.