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New to me 450r. I just put a new 08 head with SS valves, new piston and cam chain . Bike start first or second kick when cold. When warm, it will start 1st kick n 1st gear on a dead engine start.

I raced a HS with temps in the 90's (although it don't think the temp mattered)

I stopped twice to pit. When I stopped and shut the very hot motor off, it would start 1st kick. But I stalled it twice once when I was stupid and once when someone crashed into me. Both times it was lengthy ordeal. What's the difference? Does this cause a flooded condition

Yea basically the "normal" mixture is too rich when the temps and engine is hot, you want a leaner condition when its hot for starting , are you using the Hot Start ??? , this should cure the issue as it leans out the system and it should start right up !!

Hot start doesn't help in this instance. My assumption is when I stall it like that It is like it's flooded. I need to figure this out. I went from 3rd to 10th becausei couldn't start the damn bike. I really, really like this bike for GNCC style racing. Begter than any I've owned to date, but I do need to get this sorted.

As mentioned a hot motor likes a leaner air/fuel mixture. This is what the Hot Start accomplishes. So, experiment with the Hot Start as well as your starting procedure. When cold it's common to whack the throttle a few times to "prime" it with the AP squirts. You do not want to do this with a hot motor. Also, when you crash if the bike is laid over you need to get it upright as quickly as possible to avoid/reduce flooding. If the motor floods this will take longer to start and requires a different starting procedure.

I'd highly recommend you consider a Rekluse auto clutch. The Rekluse EXP Core would virtually eliminate stalling in the cases you mentioned. It will likely make you faster in more difficult parts of the course too.

Ken

What is your elevation you will be mainly riding at ?? , and what are your jetting specs ??

Elevation(from/to *average*):

Pilot Jet:
Main Jet:
Needle Clip Position (from top):
Fuel Screw(Turns Out)

Also , over oiling the air filter will cause a over rich condition and you can't really "jet it" out

Also , Trying to start the bike in gear (especially if its hot) will always make it harder to start , i understand doing it on the starting line , but once your going , then fall and trying it , will end up in you being passed , as it seems is the case , so starting procedure when hot (as Ken mentioned) , no throttle input ,etc , is VERY important

I have a feeling , your problem will be a "procedure" issue rather than a jetting issue

I am guessing from your name that you live in Indiana , if so , then you should be at 45/165 for jetting , since the highest elevation in the state is 1,257 ft above sea level , that would be the richest you would want to be , if temps get above 90 you might even want to go 1(main jet only) size down

Alls thanks for the replies. I actually love the Rekluse product, I have one on my KTM 200. This bike is the ultimate technical cheater. I just can't bring myself to part with the 900 for the Honda because other than the random stall clutching this bike isn't a big deal

As far as jetting. I'm running a 42 pilot with about 1 turn out. this combo allows for the best starting. I tried a 45 and it wasn't nearly as friendly to start. Every place I ride is pretty close to 1000 ft. ele.

Yeah, I never try to to start it when I stall in gear. But, I cannot get a good procedure going. The hot start really doesn't seem to help.

I'll keep working with it.

If the hot start is not helping then either the hot start is not functioning properly (cable stuck ,plunger stuck) , or the jetting is too rich , or the air filter is oiled too much , the hot start leans the system , if its not leaning the system , then its running rich , you have to determine what is making it rich , its got to be in the hot start or jetting , the need for the 42 pilot confirms this issue is a rich condition

The correct HOT starting procedure would be

Do NOT touch the throttle

Pull Hot Start

Kick engine over , it should start or attempt to within 1 - 3 kicks

The key with a hot motor is to let the system be lean when starting , so no throttle input till it is actually running , usually the hot start will clear the system fast as it adds more air and leans the mixture out allowing it to start easier when hot or tipped over