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how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 4:09 pm
by Jay18
I can't upgrade the engine size yet as I'm low on funds, I have an electronic ignition I need to fit, not sure how yet, Scottie has my 5 speed box for me so that will help on long distance drives, I have another carb to fit as th current one has a screw missing from the choke butterfly, would a tune up from a professional help?
any suggestions are appreciated..
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 4:10 pm
by twiss
Free wheeling hubs if you haven't got them already, new plugs, leads, rotor arm, dizzy cap, etc
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 4:10 pm
by ScottieJ
what mpg are you getting? I used to get around 25-28mpg with mine and that's about as good as they get really, might get 30mpg on a long run if you are lucky.
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 5:01 pm
by Jay18
I'm getting about 20 mpg, not calculate it exactly just a estimate, how big is the tank on a 410? it took my half a tank to go to and from Wales, plus I drove to town twice that's about 4 miles each way, so half a tank got me 40 miles to Wales then 16 miles to and from town, then 40 miles back, that's a mixture of motorway driving and driving through towns, so a total of 96 miles on half a tank..
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 5:13 pm
by twiss
Its not often I fill my tank all the way but I think its about 40-45 quid...
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 5:41 pm
by ScottieJ
It's a 40l tank but halfway on the fuel gauge isn't usually exactly half full, in fact quite often it's nowhere near
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 6:02 pm
by dazerede
ScottieJ wrote:It's a 40l tank but halfway on the fuel gauge isn't usually exactly half full, in fact quite often it's nowhere near
How far out is it Scottie is it around 5 litres
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 6:11 pm
by Jay18
as soon as my gauge drops below qaurter of a tank I put a tenner in it, last thing I want to do if run out of petrol lol..
so what should I do to get the best possible mpg?
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 6:55 pm
by dazerede
Umm no ragging it will improve mpg umm maby a Su carb
Re: how do I get better mpg with SJ410?
Posted: Thu Jul 25, 2013 7:14 pm
by Edweird
Jay18 wrote:as soon as my gauge drops below qaurter of a tank I put a tenner in it, last thing I want to do if run out of petrol lol..
so what should I do to get the best possible mpg?
Pah! I've run out of petrol about....half a dozen times now. It's all in good fun. I normally fill up when I get to about 200 miles. I tend to run out at about 250-ish.
If you want to get the best MPG out of a 410, IMO, you want have free wheeling hubs, a five speed box (I still need to fit mine), road tyres (I'd recommend Bridgestone), make sure it's sparking nicely (plugs, leads, dizzy cap, points), make sure it's well fed (best thing I ever did was fit an SU carb) and take the time to tune it.
I spent a couple of hours tweaking the carb and the ignition timing on mine and now she runs awesome. I normally get about 28-30 to the gallon just bouncing around my local area but on one or two occasions I've gotten as high as 33mpg.
I got 40mpg once but that was because I burnt a whole tank doing 45-50mph on the motorway the whole time.
And that's without the overdrive 5th gear.