Gas tank question

Have a 1971 250 with a not so good gas tank…..looking at a 1974 WR250 tank that appears to be close to fit. Tank does NOT have the cross over vent attachments on the underside.
will this tank fit?
will it work for MX racing usage even without the cross over attachments?
Thanks
ez

If the tank has no crossover tubes its newer than 74. The crossover tubes disappeared sometime in 76 - 77. I'm using a tank without tubes on a 75 MK frame. Your 71 tank was used on the next generation MJ frame which is 99.9% the same as the MK, the same frame I have a no tube tank mounted. You'll have to use a rubber strap though on the rear mount of the tank since it didn't utilize the bolt type of the 71.

Thanks! Do you have any problem with fuel starvation without the tube??

I haven't had a problem but I suppose if I road on a flat surface exclusively such as the street then I could see a possible problem getting the last pint of fuel to the petcock. Also, it could be a bigger issue if the rear of the tank and the rear suspension were higher than stock, then the fuel wouldn't run to the back of the tank where the center hump is the lowest.