Larger tank !

[donebysunday]

What larger tanks would fit the LH ?
The light worked this time, came on at 70 mi., switched to res. and 6 mi. later puttered into a station and died, filled up with 92 E10
70 mi and 6 mi. on res. ? ? ? Looked in the tank and just about 1/2" of fuel at the bottom. Took 3.3 gal. , I thought the special tank was 3.9 ?
Sure like the looks of the 1100 Maxim tank but doubt it's any bigger and fitting ???

[IanDMacDonald]

I think TC has the Maxim tank on his bike, and yes, it's bigger.

[BA80]

I think TC has the Maxim tank on his bike, and yes, it's bigger.

It fits with some modification but the upper part of the triple tree hits the tank and dimples it if the steering head get's turned too far.

Your getting lousy gas mileage Done. Even in town I get 80 - 90 miles out of a tank BEFORE I need to switch to reserve. The tank is 3.9, When I switch to reserve and fill up it usually takes 3.3 - 3.4 gallons.

Try running just plain ol' 87 unleaded regular. That engine is designed to run on regular anyway. When I run higher octane I notice a marked decrease in performance and fuel mileage.

[donebysunday]

It fits with some modification but the upper part of the triple tree hits the tank and dimples it if the steering head get's turned too far.

Your getting lousy gas mileage Done. Even in town I get 80 - 90 miles out of a tank BEFORE I need to switch to reserve. The tank is 3.9, When I switch to reserve and fill up it usually takes 3.3 - 3.4 gallons.

Try running just plain ol' 87 unleaded regular. That engine is designed to run on regular anyway. When I run higher octane I notice a marked decrease in performance and fuel mileage.

Thanks Greg ! I'll try the lower octane next.
How many gal. is the XJ tank ?
I found one with no cap or petcocks, availability of these parts ? Andreas

[cajun31]

redo the carbs and brakes.

I agree that is lousy gas mileage. You should be getting at least 32 mpg. Something is definitely going on with either the carbs or your brakes maybe both. I would check the float settings, jets etc... Before I redid my brakes my mpg suffered. My mileage is around 35mpg right now depending on how hard I get on it on the hwy. Can't resist sometimes.

[donebysunday]

All the input I can get is appreciated ! Cajun what fuel are you using ?

[BA80]

I just looked up specs on the XJ tank and it shows 13L, converts to 3.43 gallons. Seems the XJ tank is smaller.

http://www.motorcyclespecs.co.za/mod...1100_maxim.htm

A standard or Venturer tank will fit if you MUST torture your backside an extra hour between fill ups.

[Orange4]

Some places up here still sell straight gas without ethanol. Ethanol is bad for old carbs and lowers mileage. There are apps for smartphones that list stations with 100% or look them up online.

If you run higher octane you may be able advance your timing for better power and fuel economy. Higher octane makes for a slower, more complete burn. Advancing timing makes the burn longer.

I would also recommend running semi synthetic 20-40 for wet clutch if you are using 50 weight oil.
Mid and final drive would benefit from a full synthetic gl-5 90 or even an 80wt because synthetics are so much better /slicker than the stuff from the early eighties. Over at Ecomodder we found that oil viscosity makes a fairly large difference in fuel economy.

Check your plugs. They should be tan brown. If black you may be running too rich.

Also the 750 middle drive swap if you really are serious about fuel economy.

Oh, and keep your tire pressure up too.

Cheers.

[BA80]

Why not just run it on regular like was intended and not fool with anything?

[cajun31]

hey done

I go back and forth on every other tank. One tank I run 87 the next tank 93. Sometimes I even use 89. My mileage does not vary much. I have also always added about 2 ounces of marvel mystery oil in every other tank. Been doing that for years on both bikes. Never hurt anything and I like the idea of keeping everything clean inside which this product is supposed to do. I haven't had the need to tear into the motor so I can not verify if that is actually occurring or not. However, I an not the only one on this site sold on the use of the stuff.

[cajun31]

by the way

to clarify all of the gas we get around here is of the E10 variety and is another reason for the use of the marvel mystery oil. I have read that it is good for offsetting the alcohol in the fuel and the damage it can do. Of course when leaving or winterizing the bike I always drain the carbs.

[donebysunday]

Mmo

I use it now with good gas, I can attest to it's cleaning properties (won't go into that ATT). Going to run again this night and when I get close to 70 mi. on I'll fill with the non ethanol lower tane. Will report back ! BTW my plugs are white even with the poor MPG.

[BillyRok]

My XJ tank holds 5 gallons. I got 36 mpg on my first tank today (172 miles on 4.75 gallons) and 39 mpg on the second tank (155 miles on 3.9 gallons...hadn't switched to reserve yet). Running regular 87 octane E10. I have an 850 FD on it, 60 mph is about 3500 rpm. Pushing a Wind Jammer V down the road, too.

[BA80]

I thought it was more. I wonder why those specs say 13L.

[MPittma100]

Larger Tank

If I run E10 in my 1981H, I get 36-38 MPG. If I run E0, I get 42 MPG and as much as 46 if I am behind a Hogsley Ferguson. I can tell the difference in the way the bike runs/performs on E0 as I am leaving the gas station. I will admit that the E0 is a higher octane, but the bike (and I) like it. The H is bone stock other than a K&N air filter. On my 1979SF - which has a few mods (carbs are stock), I get 32 MPG with E10 and 35-36 with E0. Have not been behind any HFs with this one yet.

E0 is the only choice for what we should leave in the tank when the bikes sit for long periods. If you do let it sit with E0 (winter), you will find that you will not have to do anything at all to the carbs when it is ride time again. I have proven this with many applications including the XS11s, four wheelers, go carts, welders, generators, etc.

Is it just me?

Mike