1979 YZ250 Cylinder Top End 1978 PORTED & POLISHED #3

Description

This is a nice survivor 1979 YZ250F cylinder. It correctly fits & works on the 1978 & 1979 YZ250 & the 1979 IT250F. No missing, broken, or cracked fins. All threads are good on the studs as well as the intake bolt hole threads. No weld repairs on the cylinder. Cylinder wall has no catastrophic damage. Showing some wear on the cylinder wall below the intake from the piston rocking in the bore. Currently at 71.50 mm over bore. If I was going to run this on my bike I would bore it out to 72.00 mm & have it nikasil plated. The port & polish that has been done is very high quality. With a fresh plated bore this top end will be a screamer & last for a long long time. You can Nikasil plate these old air cooled cylinders to make them last much much longer. There is lots of moto life left in this cylinder. You will be getting all that is pictured. This weighs 11 lbs boxed properly so shipping is gonna be expensive for me. I will be boxing this up with styrofoam on all 6 sides so the shipper can not damage this in transit to you. My heavy vintage dirt bike parts always get boxed properly so they ship safely. Check out my other listings. I ship worldwide.