Info Suzuki 250 Across - GSX250 the secret to decent mileage

Cool, have you achieved that on multiple fill ups? Occasionally i can still crack the 200k on stock settings (rarely haha)

Might have to give it a go on one fill up as knocking it from the third (stock) notch to the second from the top made a pretty hefty difference!

 

Yeah, would be inclined to agree. The change to the 2nd notch was great, i dunno why i didn't try it again on the first notch in retrospect (probably too lazy lol).

Got a link to the page that mentions it?

 

righty-O well, just tried it now. My thoughts thus far:

- Needs to run longer on the choke, shows it was a bit rich overall.
- Much much snappier through the mid range and runs alot cleaner overall. The midrange flatspot is a bit less noticable.

I'll test to see if it's cured the high temperature missing and stumbling my bike seems to have in the summer (probably too rich). Looks promising so far anyway Good job!

 

Lol thanks for the lesson, i know how to clean carbs fortunately, and yes a properly tuned carb bike should need the choke on a cold bike. Specially at 5am in sydney in the winter otherwise it would be said to be too rich. But hey if it runs smooth and it works for you, good stuff.

That and I'd rather be getting my gear on then screwing around holding the throttle open and other assorted such. That's what they put the choke on the damn thing for so might as well make use of it lol.

Anyway, leaning out the needles makes it a bit easier to start hot too it seems. So that's pretty sweet. Guess we'll see in the long term now! Happy days :3

 

My across was always a thirsty bugger (6.8-7 l/100k). Mind you, I think that was due to poor jetting and an aftermarket (previous owner).

Good to see some people willing to have a bit of a play and see what they can do, especially given the smaller tank on it!

 

Okay so a bit of an interim report on this

Have done 6 fill ups and I've AVERAGED 130km to the yellow light having only been able to get maybe 100 at the best of days previously. The best I've gotten so far was yesterday where i got 138km before it came on during freeway riding. Baring any catastrophic failure that makes me so so happy as you would be haha! Gone from an average of 7.2L/100km to a bit under 5.

Thought the light was broken the first few times but sure enough it's working just fine  ;D Bike also runs significantly better pretty much everywhere in every situation for it too.

Good times 10/10 would mod again lol.

 

i know this is an old thread but thought id ask how things went say 6 months later? im interested in trying this.

this weekend i was coming back from bathurst on the m4. i looked down and seen 183km since last fill. ive never been able to get any higher than 180 before. i switched it to reserve and tucked in behind some cars till i got to a servo. i pulled up at 204km and only put in 10.5ltrs and thats after squeezing it in there. the only thing ive recently done is went from a slipon exhaust (previous owner) to a standard one. lately the orange light will come on at 90km and red at about 140-150

 

Hmm, might have to try a standard exhaust on my bike.....

 

lol maybe. see its only a couple ks extra so it dont make much difference through the week. but on the long rides where you feel the need to stop at every servo just incase gets a bit boring.
maybe i should convert the boot space into an actual tank, or find an already made tank that might fit lol

 

Hey Andrew
Am a big fan of the Across, I think they are a great bike. The one issue with them is the tank size.....from memory 12.5L which isn't huge by 250 standards. Have you every had the tank out ?? As you know the tank sit's at the rear above the tire, they are well protected but very heavy for there size. I have often thought how great it would be to have a plastic tank with 14 or 15L capacity.
The tank location necessitates the use of an electric fuel pump to feed the carbs.......just another thing to go wrong !!
Cost to have this made would be prohibitive to say the least and finding space apart from the boot for a small 2 litre tank is a big ask. Space on all bikes seems to be at a premium, would be a shame to loose the boot.........my 2 cents worth.

 

no never had it out. dont get me wrong i do love the across. the boot is a good thing for what i use the bike for. my helmet dosent fit in there but that dont bother me as there are the hooks under the seat for that.

id probably never change anything as i dont have the skills necessary to fabricate.i do plan on making her pretty again though.

 

Thanks for this info, I changed my needle from the third clip to the second clip so we'll see how she goes!

 

OOOOLD thread yep, but having owned an Across for the last 6 months I thought I would chime in here with my 2c.

I can confirm adjusting the needles to the second notch from the top (have not tried top notch yet) does actually make a pretty significant difference in mileage.

Did about 4 tanks in stock form (3rd notch from the top) & reserve light was coming on at ~100k's. Now it's coming on at roughly ~150k's & red light comes on at ~200k's.

I'd say second notch from the top you'll get an extra 50-80k's out of it.

Pretty awesome really thanks OP!

Notes:

• I have fully cleaned & sync'd the carbs which helps.
• It does actually starts a LOT easier both cold & warm. Basically instantly.
• Have not noticed any loss in performance & hits the redline without any issues

Will report back at some point after I've moved it to the first notch & gone through a few tanks of petrol.

 

Would seem like the standard jets are too rich. You running an aftermarket pipe, too?