FSE 450 Gas Tank

A

anathema

New member
Hi I just ordered the clarke tank for the FSE450 (05)

I noticed it is only 2.8 gallons. Does a bigger tank exist for this bike? For the DRZ there are a few 3.2 and 4 gallon options, would be nice because its hard to really go anywhere on 2.8 gallons.

40mpg*2.8=112km. Thats Not far for my usual dirt bike trips :( And I've heard of people getting less than 40mpg.

Anyone know?
 
I have read somewhere that an oversized tank is to be had, but is sold in Europe. I found this in my notes: 4 gal. tank from Spain. So there is one, but u will have to do some searching. Maybe Nick or Jack can help? I bought the Clark 2.8, but would also like to have a 3.2 or 4 gal. for longer rides.
 
anathema said:
Hi I just ordered the clarke tank for the FSE450 (05)

I noticed it is only 2.8 gallons. Does a bigger tank exist for this bike? For the DRZ there are a few 3.2 and 4 gallon options, would be nice because its hard to really go anywhere on 2.8 gallons.

40mpg*2.8=112km. Thats Not far for my usual dirt bike trips :( And I've heard of people getting less than 40mpg.
Click to expand...


You should be able to stretch out some decent mileage on the GG. The EFI will help a little and since there is no carburetor overflow tube to waste gas out of you should notice an increase in mileage from that also. For an extra idea, put a toggle switch on the wire that you unplugged from your EFI and switch it to the lean setting for regular cruising and back to the richer setting for higher speeds and harder riding. Maybe those three things can get you the mileage you need.
 
On my '06FSE450, riding around 1700-2000m ASL, with injector trim at "38" giving CO of around 1.8% at the tail pipe, I get around 90kms of hard flat "dirt road" riding, and round 130kms of mixed technical riding on the Clarke tank. Going leaner on the trim results in less bottom end, the header pipe glowing and continuous backfiring on deceleration so that to me is not an option, even though you use less fuel. Going richer I haven't noticed much improvement in performance, but slightly heavier fuel consumption. IMHO, the key to getting these bikes to perform efficiently takes a dealer who is prepared to run the bike on a dyno, run it in real life, compare the results and move towards the optimal setup. When I got the bike new, it had very abrupt and short lived power delivery, with red header pipe and backfiring like crazy. It now runs cool and has "flatter" power delivery. The long range tank on the Gas Gas website says 14 litres, but that is not right, the factory also supplies the Clarke unit. That was found out after about 10 emails between myself and the factory.
 
When I first got my '05 FSE the dealer neglected to inform me to remove the yellow/blue wire. The first time I had it out for a break in I stopped for a break and I swear I heard the radiator fluid boiling!
 
Actually, my header pipe does glow (can see it at night, about 4 inches of it glows) red, and I get some backfiring on decel only. Bike power feels pretty good climbing hills etc, but I'm not sure if I'm too lean? The dealer has an gas exaust analyzer and computer/parts to change the FE, but no dyno so kind of hard to use the analyzer.

I've been told by a few people that some popping on decel is pretty normal for a properly jetted bike but I'm not sure.

Anyone know? What can be adjusted with the software..just a trim number? Or the richness in any part of the band? or what?
 
The tank I have now is most certainly smaller than the clarke tank from the pictures I've seen.

Anyone know the stock FSE tank capacity (for an 05) ?
 
anathema said:
The tank I have now is most certainly smaller than the clarke tank from the pictures I've seen.

Anyone know the stock FSE tank capacity (for an 05) ?
Click to expand...

The stock tank is 1.9 gl. I would recommend the Clarke tank, it adds about a gallon and doesn't feel much wider.
 
Eugene said:
the header pipe glowing and continuous backfiring on deceleration so that to me is not an option,

with red header pipe and backfiring like crazy.
Click to expand...

I understand that the backfiring has to do with a loose header pipe to muffler connection. Tighten it up and use sealant and it should go away.
 
Last edited:
The injection system allows you to only set a "base" mixture, giving a set mixture across the RPM range. To allow the system to be mapped to optimal mixture for all load conditions, throttle settings, temperatures etc devices (Techlusion TFI, Yoshimura Cherry Bombs, etc) are available which interface with the ECU and modulate the output to the injector. Claims of significant power and torque gains are advertised, but IMO the power delivery characteristics at a certain engine load/speed are going to change significantly in a certain range only, and you may lose out at some other point. I have been debating whether or not to order a Techlusion TFI system, but I'm sceptical. Manufacturers spend huge amounts of monet developing engine control systems, and the products they eventually put into the market are designed as a "middle of the road" package, not a 100% optimal system.
Has anyone fitted one of these systems to a FSE450 yet?
 
I have a Techlusion TFI on my Harley Night Rod (EFI V twin). It works very well. Basically it is a simple "pulse stretcher" that adds injector pulse width. There are 4 potentiometers (pots), 2 that adjust % of pulse width (low and high RPM), an RPM threshold pot, and a 4th pot that controls the addition of even more fuel during hard acceleration, like an accelerator pump.

All modern street bikes with EFI are mapped too lean for max performance for EPA reasons, and this does a very good job of getting the mixture in the ballpark. You can get it even closer with an EGA on a dyno. Not as good as a custom remap but much eaiser, cheaper, and something the average rider can do in an hour or so. Its also a simple device that can be eaisly removed if neccessary. The most common use on a street bike is to richen the mixture when adding a different pipe. Now if the FSE has a second map in the ECU that is a performance orientated, non-compliant map, this may be pointless unless you plan modifications that require a mixture change.


When the big names go EFI, I'll bet this will become the new jet kit, as I doubt the mfgs., especially the Japaneese, will supply software and provide support.
 
At the manufacturer site, gasgasmotos.es I found an 18l tank, under the 'Racing' link. Is gasgas supplying this tank? 18l is 4.75 US Gallons. That is a large tank.
 

Attachments

  • diposit2.jpg
    diposit2.jpg
    50 KB · Views: 17
I also wanted that huge tank on the GG.es site for our long distance desert rides, but when I contacted the factory direct, they told me that the capacity was 10.4 liters, not what they had on their website.
 
16 litres is close to 4 gallons. I'd be very interested . Who's the manufacturer? GASGAS? Has anyone contacted Clark or IMS to see if they'd be interested?
 
You must log in or register to reply here.

Similar threads

M
Gas Gas FSE/FSR 450 engine longevity/mileage
Replies
3
Views
91
SS109
SS109
D
05' 450SM (i have some questions)
Replies
2
Views
2K
DutchSM450
D
D
05' 450 SM (Looking For Gaskets)
Replies
1
Views
3K
Anders
Anders
L
Gas gas fse 450 2004 pickup coil/pulser/igniter help!!!
Replies
3
Views
4K
Gasser Nate
Gasser Nate
M
Gas tank options (moved from Factory News Thread)
Replies
15
Views
7K
Mick
M
Back
Top