Fuel question

Graham88 · World Chat Champion Joined: 03 May 2006 Karma :

Would being de-restricted use more fuel than being restricted to 33BHP?

T1z3R · World Chat Champion Joined: 23 Oct 2005 Karma :

yes
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steveh · World Chat Champion Joined: 24 Aug 2004 Karma :

derestricting would possibly use less fuel, say your getting up to 70, with a restricted bike, youd have to cain it, were as you could get up to that speed in second with full ypower, knock it into 6th and pootle along at 6k if that..

i could be wrong, as the restrictor makes your inlet alot smaller, so probably using less.

id rather have full power and coast on tick over in 6th Razz

Steve.
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Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

depends.

If the bike was set up for the restrictors i.e. the mixture was leaned off then yes it would use more when you derestrict it and set the carbs back up to run without the restrictors.

If it wasn't set up for the restrictors then no, because the restrictors only restrict the amount of air, not the amount of fuel, so bikes that aren't set up for their restrictors tend to run rich.
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Graham88 · World Chat Champion Joined: 03 May 2006 Karma :

JonB · Afraid of Mileage Joined: 03 Jun 2004 Karma :

My bike is a lot less fuel efficient now than when it was restricted cause I now use the bike above 6K RPM much more often than before.
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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

V2 · Nearly there... Joined: 06 Feb 2006 Karma :

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

Restrictor kits limit the amount of air the engine can draw into your engine (The NC23 I bought had restrictor plates with 14mm holes in them). The fuel delivery is controlled by the air drawn in, so if you are drawing less air then you are using less fuel too.

Basically you can put it like this:

Disregarding any effect on efficiency the restrictor kits have. All of the energy your engine converts comes from the fuel you consume. If you are making 33HP, you are consuming 33HP worth of fuel. If engine makes 90HP without the restrictors fitted, you'll use 3 times the fuel at full power.

h00dwink · World Chat Champion Joined: 04 May 2006 Karma :

extreme3d · World Chat Champion Joined: 27 Dec 2004 Karma :

tatters · Exxon Valdez Joined: 05 Jan 2004 Karma :

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

Give me fuel-injection any day!