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Jetting, anyone think this is a bit rich?


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SLF-951

 
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Jetting, anyone think this is a bit rich?

Mon Jun 22, 2009 3:38 am » Post: #1 » Download Post

So.... After finally getting my 300 kit installed I pull the carbs to give em a cleaning and install the biggest jets Matt sent me for breaking the bike in. Went for the 185 front and the 182 top.... This with the power jets being soldered closed(just found out they were like this). This was the first time I myself have had the carbs opened up, only to discover that it was running on a 182 front and 180 top.??????

The bike did come from sea level San Fran. and was running premix at one time..... And was being run flat out on the track.... But wow, isn't this a bit rich for the prior 250? I mean yeah, i always noticed the bike ran real nice when it was cold out.... But it never fouled a plug or anything when it was hot out either. It seized on a warm night too.....

I'm just real neverous about running it at the current jetting.... Don't even trust it to do a plug chop as of now. This rebiuld already has me not wanting to ride the bike due to the $ it cost to put it back together.

As of now, I'm thinking I want the power jets back....?? The bike does run real strong in short bursts that I'm willing to give it.... And does stand up with a roll on and no clutch... I like that a lot.... Just really not wanting to seize this bad boy up within the first 100 miles....

Anybody's input would be great.... Just not knowing about the power jets and how much they correct, or how much I need them to be safe on the jetting is keeping my bike parked. And that's no fun in the middle of summer.

Steve
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Neal

 
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Mon Jun 22, 2009 6:12 am » Post: #2 » Download Post

Go big on your jets ! If the bike wont rev to 12500 rpm and splutters , go down 1 size at a time . Better to oil up than seize up !
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Dave Ett
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Mon Jun 22, 2009 8:19 am » Post: #3 » Download Post

I was running those kinda numbers on my 250 with various race bits fitted. No-one will be drawn into giving you numbers, but whatever works for that bike is what works.

The HRC kt starts at 180, and runs up to 200. It's designed to run with the PJ's blanked, no airbox etc, so yes there are setups where big jets are spot on.

Now I've returned mine to almost stock I'm right back down towards the standard jets...
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Andy
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Mon Jun 22, 2009 10:48 am » Post: #4 » Download Post

To discuss specific setup numbers, please use the Setup Information area in the Members Section.

There is a topic in there started by Matt about 300 jetting.
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