majorwinters Posted August 27, 2018 Report Share Posted August 27, 2018 (edited) i recently bought a 1975 yamaha ty 80 b. i run fuel oil ratio 40 to 1. do you need expensive 2 stroke oil. will using i use semi synthetic cost around £9. should i use castrol or will regular scoooter motorcycle 2 stroke work.well. also what compression should a ty 80 have the haynes manual states 78 psi warm engine>?? 78 psi seems low. piston and rings look ok.i had to order new head gaskets studs becuase the owner before had used a cut off piece of gasket.it was circle had the edges cut offf and it failed. had exhuast gases blowing out from the cylinder. cost around £70 to buy 4 new studs 4 new bolts gasket set. i am an adult but becuase i dont have a trailer to transport my bike a ty 80 fits in the car boot. i am around 12 stone. will the engine last carrying my weight.i know this sized bike was desighned for 5 to 12 yr olds not fully grown man but its a fun bike to ride.its my first motorcycle. Edited August 27, 2018 by majorwinters Quote Link to comment Share on other sites More sharing options...
forteh Posted August 27, 2018 Report Share Posted August 27, 2018 Unfortunately this is a bicycle trials forum with less of the two stroke required to make the bikes run Try asking the same questions on the trials central forums and you'll probably have a much better response Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.