Triumphrat

skinman

In October '09 I picked up an '07 Speedie (carb.) with 2650 miles (4265 km) on the odometer. Seller said the dealer installed TORS, K&N filter, and rejet. Seller added a Viper windscreen and sissy bar. Machine is in perfect condition, runs well, etc. My only complaint is low mileage (kilometerage?), and therefore, range. I get in the high 20's for MPG (12 KPL?) using 91 octane (other choices are 85 & 87 at this altitude).

Winter is firmly entrenched here in the shadow of the Grand Teton (elevation 4740 ft / 1444 m) and a Haynes is on the way, so I have time to look into the situation. Any ideas on what I should be investigating to try to squeeze out more than 95 miles (150 km) before switching to reserve? What fuel consumption do others get with a similar setup?

B02S4

My 07 SM bagger with K&N pods, tuned carbs, & long TORS does better than that; IIRC, low 40's MPG cruising & mid to high 30's if twisted. That is typically at 400' - 1000' ASL.

pgspeedy

I've got a similar setup to yours, dealer installed short TORs, rejet, but no KN on my 08 SM and I'm getting 40 - 45 mpg at sea level.

Pearsy

I have a new 09 Speedy, vanilla setup, I am getting almost 300km (185 mi) before the light comes on. i.e 40-45 mpg @ sea level.

__________________
"You've got to get your first tackle in early, even if it's late."
- Welsh rugby hardman Ray Gravell

Findlay13

I've got an 07 America,with aftermarket"Madaz" pipes,K&N filter,snorkel removed,re-jet,shimmed needles.
I get 18 Kms per liter

mr147

Hi I have 07 America. Triumph short pipes rejet and AI removed and I get 50 mpg at sea level.

skromfols

You should be getting around 40 mpg + or -, so something is certainly wrong. Do you know what sprockets the bike has? If you're geared very low that could affect your mileage, but I don't think it would affect it that much. If it were me I would begin by checking to see if the bike was leaking gas. If the bike starts easily and runs good that eliminates a number of things that I would have checked, but you're still using way more gas than you should. I would still pull the plugs and check them to make sure that both were fireing. Check your gas filter and air filter. If you can't find the problem, find a good dyno operator with an air/fuel analyzer and do a dyno run. Something is obviously wrong.

Can you contact the guy you bought the bike from? If you can ask him if it's always had poor gas mileage or if it's changed at some point.

Good luck and let us know what you find out.

__________________
Stan
08 America, debaffled, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams

gmike

You might want to check that your odometer is giving you the correct mileage.

skinman

Thanks all - certainly sounds like I should be getting 30% - 50% better mileage. The left carb had some very minor tan residue on the outside that came off very easily with a small amount of carb cleaner. Rubber on left carb looks a little distorted on the intake side, like perhaps the clamp was overtightened. Did the maintenance on the K&N air filter - did knock some grunge out of it - more than I would have expected. Pulled the plugs - equal & obviously over rich - dry, black soot - not sure if there was enough grunge in the air filter to cause that. Replaced plugs with iridiums while in there.

Sprockets should be factory. And the Keihin CVK carbs should automatically compensate for my altitude (between 1km & 1 mile), correct? Although she was supposedly rejetted for the K&N air filter & short TORS, I'm wondering what jets are really in there, and what they should be given my setup. Also noticed the oil filter was KN-191, not the KN-204 recommended for an '07. Attention to detail!

When this snowstorm passes I will wheel her out and start her up and check for any leaks now that she's nice & clean, but unless I fit her with outrigger skis and chain up the back tire I won't be able to check mileage until sometime in March!

B02S4

No, the CVK carbs don't compensate for altitude like EFI does. Given what you've described so far, the jetting does seem too rich for your altitude. A good rule of thumb is to up or down jet by 1 range for every 3000' elevation change.