When I start my bike to let it warm up it seems to get REALLY hot. I know that as it warms up its going to be hot, but I mean in a matter of just a couple of minutes it is putting off some major heat. Is that normal? I went for about a 30 min. ride the other day and after I got off my bike over an hour later it was still so hot it could burn you. I changed the spark plugs recently and they looked fine when I changed them. The only changes I have made to my bike that would affect this would be I added the cobra F1s exhaust. I've read many times here that a rejet isn't needed with this exhaust, but do I need to. Any opinions are appreciated. thanks

It said rejet not needed and ... you believed them ... ha ...
A stock GS barely gets by without a rejet ... anything will need a rejet including that TB lawyer sneezing next to the thing.
If you dont have idle hover that means your idle is rich enough. if you do have idle hover also, that means its definete you need a rejet.
Cool.
Srinath.

sorry to be stupid, but what do you mean by idel hover? thanks

i think when it goes up the rev counter , doesnt stay at 1200 or so , it just jumps about all over the place

the idle stays pretty steady. the bike is running great, it just seems to be too hot. But I have nothing to compare it to.

Yea, idle stays up when you shut off the throttle.
Idle staying put just means you are OK down at the low rpm - aka mixture screws.
I;d check the valves and then rejet the damn thing anyway. Even stock.
Now how did it do stock ... with original pipe.
Cool.
Srinath.

Is that also adjusted at the idle screw?, when the revs hang?

A 95 GS500 is really too lean without an exhaust change, the new muffler could only make it worse.  Lean engines run hotter.  See your located south of me and it's been too hot here already.      An air cooled bike needs to be moving in the air to cool properly and extended idling time and getting bogged down in traffic on hot days can really raise the temperature of the bike's engine.

It will smell and feel hot long before it becomes too hot though.  If you think a bike is running too hot, best way to check it out is to measure the oil temperatrure when it's hot.  I found putting a meat thermometer in where the dip stick goes would give me some indication of how hot an old Honda was running when I was having trouble with it.  Adding an oil cooler gave me another years use out of that bike, but I've found my GS500s to run much cooler in general than my old Hondas did.

My guess is a pre 01 GS needs a rejet job with any exhaust change that increases air flow, they are just too lean to go any leaner.

Im pretty sure mine was rejetted before i bought it , but , the Mot bloke i was talking to , hes a mechinic , and he sed they dont all have to be rejetted , i said this before , but ppl werent to impressed .

mines got the NExxus , and its still running rich , and i havent got round to install my lunchbox , im thinking it was jetted for all these already  .as it had terrable miliage stock

Ironically as the floats wear they will turn the bike richer. On bikes like the vulcan 1500 the needles and the tubes they go in also wear and that also makes it richer.
If on a stock US bike you're not lean, you may have one of those 2.
jay_wolf - a UK bike comes with 40/125's and a adjustable needle. You're 90% there. So your bike may be right to begin with and rich with the floats wearing ...
Cool.
Srinath.

Heather, you have been riding the bike since Oct. of last year.  You have nothing to compare it to.  Has it only been recently that you've noticed that it's running hot?*

If so, then something may have happened, maybe.  If the bike has been running fine, then don't worry about it; this is an air-cooled bike.

*Or, have you started riding it again, after it's been in storage?

Quote from: seshadri_srinath on June 04, 2007, 08:07:54 AM
Ironically as the floats wear they will turn the bike richer. On bikes like the vulcan 1500 the needles and the tubes they go in also wear and that also makes it richer.
If on a stock US bike you're not lean, you may have one of those 2.
jay_wolf - a UK bike comes with 40/125's and a adjustable needle. You're 90% there. So your bike may be right to begin with and rich with the floats wearing ...
Cool.
Srinath.

guess ill find out when it get remot't . its not a uk bike ,its imported ,

Edit: ive neva ever once used the choke to start it , since i got it 2 years ago , on cold winter mornings ., just started it and it ran fine

i guess i have noticed it more lately because i have been doing stuff on it- clubman bars, pegs, exhaust...when before i just rode it. I never noticed it before, but I was never messign with it as much as i did before. Guess it's just me, but I may rejet just to be safe. thanks guys.

OK you have to remember there is 2 ways to get it cooler ...
Get it to make less heat - by richening up the mix - rejetting.
Get it to pump more heat out by having free flow exhaust, having the exhaust valves open sooner and stay open longer (adjusting them to the tight end of the range) etc.
Ironically #2 will cause the #1 to get worse. So you would be best served by re jetting.
Cool.
Srinath.

I noticed today mine was a little hotter then usual as well, but it was almost 75 degrees at 10:30 am todaay. So down your way it would have not only been more humid, but near 77-78. Could that have been part of it?

Dam it! Now I have a question.My bike runs good.I can tell it's lean and wheezy.I want to install a stage 3 jet kit,k&n,and exhaust.Do I need to reset the mixture screws,since my bike is running good?I plan to make the home made carb balancer.I'm new to the cv type carb.

You definetly have to do the air screws with the stage 3 (K&N lunch box + pipe = stage 3) ... but that is minor, I dont see what the problem is.
Cool.
Srinath.

When I did the K&N, stage 3, and exhaust on my GPZ550, I also wound up doing some Accel coils. My others crapped out, even though they were only a year old. Think about it, more air, more fuel, more exhaust, might as well add more spark. And yes to the mix screw, ever jet kit Ive bought in past has had the drill bit to get to it and vauge instructions. Need help let me know.

Quote from: seshadri_srinath on June 04, 2007, 10:43:04 AM
You definetly have to do the air screws with the stage 3 (K&N lunch box + pipe = stage 3) ... but that is minor, I dont see what the problem is.
Cool.
Srinath.

Thanks for clearing that up.
Ben

Quote from: roosterbike on June 04, 2007, 10:47:33 AM
When I did the K&N, stage 3, and exhaust on my GPZ550, I also wound up doing some Accel coils. My others crapped out, even though they were only a year old. Think about it, more air, more fuel, more exhaust, might as well add more spark. And yes to the mix screw, ever jet kit Ive bought in past has had the drill bit to get to it and vauge instructions. Need help let me know.

Hey thanks man.I need a hand.