I Am Sendind Out My Yz 490 Cylinder & Head To Forward Motion,and I Am Wondering What Yr Would Be Best To Send .
I Have A 1990 Cylinder And A 1986 Any Recomandation On Work To Be Done What Powerband Ect...
I Am A Vet Expert That Rides Alot Of Rough Scrambles,tt And Cross Countrys.
Also Thinking Of Sending Both Cylinders To Have 2 Different Powerbands..
This 490 Motor Has Been Put In A 2001 Yz250 Chassis And I Am Running A Pc Pipe That I Have Modified To Fit Also 39 Pwk Carb..
Can You Guys Also Provide Pipe Dimensions So I Can Have Aircone Make Up Some Cones For Your Porting Mods,if So How Much??????????
Thank You
Jerry Warren
I Have A 1990 Cylinder And A 1986 Any Recomandation On Work To Be Done What Powerband Ect...
I Am A Vet Expert That Rides Alot Of Rough Scrambles,tt And Cross Countrys.
Also Thinking Of Sending Both Cylinders To Have 2 Different Powerbands..
This 490 Motor Has Been Put In A 2001 Yz250 Chassis And I Am Running A Pc Pipe That I Have Modified To Fit Also 39 Pwk Carb..
Can You Guys Also Provide Pipe Dimensions So I Can Have Aircone Make Up Some Cones For Your Porting Mods,if So How Much??????????
Thank You
Jerry Warren