1981 srx motor

allout racer · Post by **allout racer** » Thu Aug 09, 2007 2:59 am

i have some questions for you guys out there
first off the 81 motor that i have had n serial number on it the person that my dad got if from must have ingraved it iam guesing not posotive tho
when the motor was given to my dad the guy had just removed it from the sled and the rest of the sled was destroyed i guses cus all my dad got was the motor no carbs no pipes no nothing just the motor the persons last name is snow iam not sure if thats how you spell it but ya the guys now in a wheel chair so iam cinda confused why this motor had no cerial number help please give me ant info you have

Post by **Vmax540** » Thu Aug 09, 2007 7:40 am

Tylers 81 SRX has no serial number. I believe if the engine is replaced with one from Yamaha there will not be a serial # ?

opsled · Post by **opsled** » Thu Aug 09, 2007 9:41 am

The serial #'s were stamped into the gearcase. The 81 440's and some of the 540's were prone to problems with the waterpump and alot of gearcases were replaced because of damage to them. The replacement gearcases didn't have any #'s stamped into them so if you have one without factory stamped #'s it was probably changed at some point due to damage. I have 1 or 2 around here without #'s.

Phil (opsled)

allout racer · Post by **allout racer** » Thu Aug 09, 2007 7:17 pm

thanks for the info guys that make sence

vmax-540 · Post by **vmax-540** » Thu Aug 09, 2007 10:03 pm

The 81's had a ignition recall ,where the stator and CDI were replaced with a new stile ignition , very similar to the Vmax ignition but the stator would not fit into the original case so they had to replace the case also , and that is where the serial # was located, most dealers never restamped them in.