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post #1 of 14 (permalink) Old 03-03-2016, 09:57 AM Thread Starter
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How much fuel?

Hi guys,

My first ever race here in the UK on my K5 1000 is in just over a week and I wanted to ask what you guys use for fuel and how much on average you get through per race.

It's a tuned engine in my bike with full system and head work pushing out around 180 RWHP.

I can use 50/50 mix of regular and avgas under race regulations, but wondered if it was worth doing this rather than just buying premium 100 RON Shell V-Power unleaded?

About consumption, I was thinking to half fill the tank per race which is 12 laps at 1.2 miles each.

I'm not the quickest guy doing about 56 second laps on a good day, but would this be too much fuel? I would rather have too much than the opposite obviously

Thanks for any advice
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post #2 of 14 (permalink) Old 06-15-2016, 12:24 AM
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Re: How much fuel?

I've heard negative rumors about using avgas, but no info on the specifics/whys, something to do with the characteristics of av fuel vs racing fuel. I try to keep under 1.5-2 gallons on my R1 for an 8 lap race of 2.9 mi/lap. If the fuel light comes during the cool off lap I've done it right. Yet to race the K9 so not sure about fuel requirements. Best I can do, hope it helped, and that you ended up having a good race
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post #3 of 14 (permalink) Old 06-17-2016, 12:41 PM
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Re: How much fuel?

You should run what it's tuned for.

I fill my tank whenever the gas light comes on, or mid-way through the day. I don't measure it, although maybe I should. I dunno, I did pretty well without measuring...
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post #4 of 14 (permalink) Old 06-17-2016, 01:44 PM
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Re: How much fuel?

Same here, I never really measured. I knew I needed a full tank for a GTU race, and 1.5 gallons for a sprint. I know guys like Jim Cohrs and Mark Miller who would break out the beakers and graduated cylinders to measure out their fuel, but then again, when your fuel is like $50/gallon you don't want to waste any!
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post #5 of 14 (permalink) Old 06-17-2016, 01:51 PM
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Quote:
Originally Posted by Anthony D View Post
Same here, I never really measured. I knew I needed a full tank for a GTU race, and 1.5 gallons for a sprint. I know guys like Jim Cohrs and Mark Miller who would break out the beakers and graduated cylinders to measure out their fuel, but then again, when your fuel is like $50/gallon you don't want to waste any!
Oh shit, I don't blame them
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post #6 of 14 (permalink) Old 06-17-2016, 04:03 PM
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Re: How much fuel?

Quote:
Originally Posted by tatersalad314 View Post
Oh shit, I don't blame them
These guys had R6's that made 145rwhp...

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post #7 of 14 (permalink) Old 06-17-2016, 04:26 PM
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Shit! My first thought is why not just bounce up to a 1000? But if you want to have the upper hand in the 600s, I reckon that would do it
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post #8 of 14 (permalink) Old 06-17-2016, 04:28 PM
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Re: How much fuel?

Yup, his was so fast we used to call it the R9... His motor alone was upwards of $10k.
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post #9 of 14 (permalink) Old 06-17-2016, 05:01 PM
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That's almost a brand new 600 right there I think the question begs to be asked, did they stand in the podium if not win at races?
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post #10 of 14 (permalink) Old 06-17-2016, 06:25 PM
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Re: How much fuel?

Yes... They won everything.

Oh, and the motors needed to be refreshed every 1,500 miles, so basically twice per season.

Last edited by Anthony D; 06-17-2016 at 06:27 PM.
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post #11 of 14 (permalink) Old 06-17-2016, 11:48 PM
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Re: How much fuel?

Which is why I haven't built a motor yet...
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post #12 of 14 (permalink) Old 06-18-2016, 07:08 AM
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Re: How much fuel?

A Livengood SS motor can go 5,000 miles between refreshes Bob... and will make upwards of 125rwhp.
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post #13 of 14 (permalink) Old 06-18-2016, 07:21 AM
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Re: How much fuel?

I was told a SS motor for a gsxr 600 was roughly 6k, which is 3x my yearly race budget
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post #14 of 14 (permalink) Old 06-18-2016, 07:35 AM
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Re: How much fuel?

Unless his prices went up a shitload, it was like $2,500 IIRC...
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