Super Jet motor questions

[rider119]

Alright, here we go, i've got a 650 sn, qas wonder what cases and cyclinders does that mean I have? 6m6? And what is the difference in 61x, 62t, 64x, ect? And the difference between the x and t? And if you port a 760 will it be better than a 701?

What do you think about this deal?
http://dallas.craigslist.org/dal/boa/2480183074.html

Thanks

 

[rider119]

Also, my 650 is bored .08 over, what would my displacement (cc's) be?
Thanks again

 

[Yami-Rider]

650 is 6m6
61X is a single carb 701 and the lower cases are designed different
62T Is a Dual carb 701 motor (like mine)
64X is the 760 motor

I have heard the 760 motors dont make the torque that the 701's make so thats why everyone goes with the 701.

.080 over on your cylinders is only like a 6cc gain

Edit: And that motor seems like a good deal with the electronics and all and those carb's are atleast 44mm SBN's (4 Bolt Pattern)

 

[rider119]

Now it all makes since!!! Hahaha
well what about numbers for the cylinders?

 

[mademan9]

Thats a good deal on motor. You better grab it before someone else does.