2010 GasGas FSR 250

[blitz11]

If there are no external oil lines, does this mean that the GG runs with just the oil in the normally dry sump, or did they change the engine design to include a wet sump? if they've eliminated the oil tank and not modified the engine, that means a small oil capacity, which could have a detrimental effect on engine life.

Not sayin', just checking.

[dirtrider0129]

if I remember correctly, The new WR's are a wet sump set up unlike the older models that were dry sump. The older ones had a oil tank in the frame and then a externally mounted tank in front of the engine. In the picture that shows the ignition cover, do you see the little black cap? its the oil dipstick/fill hole. Again if I remember correctly it only holds about 800cc of oil, and lubricates the engine and transmission.

[Berkyboy]

dirtrider0129 is correct, 800cc of oil is what the wet sump system needs.

[blitz11]

800 cc is what the present sump in the current design WR/YZ 250F yamaha holds. (Toykomods sells "wet sump kits" which block the scavenger pump and external oil lines). They didn't change the design.

For a reference, my kid's TTR125 holds 1 L of oil. your GG holds 900cc of oil, and that is just for the transmission. My kids' XR70 held 800 cc of oil.

If this were my bike, I'd run a synthetic oil and change it after EVERY ride. You're lubricating a transmission, clutch and engine of a very high performance engine on on .8L of oil. W/O high maintenance levels, you're looking at a disaster.

If these things start grenading, GG will suffer. I hope each bike is sold with a case of a good synthetic motor oil.

Oh, and a hand grenade joke:

What do you get when you throw a hand grenade in a French kitchen?

Linoleum Blown-Apart!

[Berkyboy]

250 four-stroke wet with full tank of fuel just weighed in at 248lbs.

[SideshowBob]

Originally Posted by Berkyboy

250 four-stroke wet with full tank of fuel just weighed in at 248lbs.

Not bad at all! Oil included I assume.

That means roughly 234 dry, that's actually damned impressive.

[dirtrider0129]

Originally Posted by blitz11

800 cc is what the present sump in the current design WR/YZ 250F yamaha holds. (Toykomods sells "wet sump kits" which block the scavenger pump and external oil lines). They didn't change the design.

For a reference, my kid's TTR125 holds 1 L of oil. your GG holds 900cc of oil, and that is just for the transmission. My kids' XR70 held 800 cc of oil.

If this were my bike, I'd run a synthetic oil and change it after EVERY ride. You're lubricating a transmission, clutch and engine of a very high performance engine on on .8L of oil. W/O high maintenance levels, you're looking at a disaster.

If these things start grenading, GG will suffer. I hope each bike is sold with a case of a good synthetic motor oil.

Oh, and a hand grenade joke:

What do you get when you throw a hand grenade in a French kitchen?

Linoleum Blown-Apart!

Before I bought my GG, I use to ride a yamaha 4 stroke and was a member of Thumpertalk. The small oil capacity of the WR/YZ was one of the biggest drawbacks to the bikes. I don't understand why Yamaha went with "wet sump" set-up for the off-road bikes. I guess it's ok for motocross, but for off-road, it's plain ridiculous. With such short oil change interval's, I would have to do an oil change half way thorough a day of riding. That Yamaha engine has been around since 2002, so I don't thing grenading engines will be a problem for GG.

[gasgasman]

Ok, I'll open a can of worms......
I wonder if the YZ cam timing can be done to the Gas Gas?

The WR 250 engine is a modern day version of the XR400 motor. Very bullet proof. I had a 2005 WR250 dual sport and only had jetting issues with it.

Speaking of dual sport-the Gas Gas 250F will make a nice conversion.

[blitz11]

The WR motor is solid and reliable. But, they are also designed as a dry sump engine, with higher oil capacity (about 2 quarts). The oil tank also acts as a convective source of heat transfer (i.e., oil cooler).

Such a small oil capacity bothers me a bit, but since i won't be buying one, I'll get over it.

I hope that the bike is wildly successful.

[eff]

Didn't Yamaha just update the 250f motor last year or 2007? or do you think this motor is an older model?