Difference between Yamaha 60 & 70 2st's

[IndyR1]

Was wondering if anyone knows what the difference is between the two. Manual specs the same apart from maximum power is at higher revs for the 70.
I'm assuming the manufacturer has this well covered so is not easy to make a 60 into a 70. Yamaha made this 2003 model in 50,60 & 70 but interestingly only did two versions of the 70, both of which were not power tilt & trim.

Si

[spartacus]

Yamaha 60/70hp from 2003 on use the same block, but there are difference. See link: yamaha 2 strokes

[matt h]

THE 60 tops out at 5500 rpm and the 70 6000rpm and both weigh 105 kgs and all mods power trim and tilt, both use identical alternators, the only differences are the RPM and the timing to give that extra power.

[IndyR1]

Originally Posted by matt h

THE 60 tops out at 5500 rpm and the 70 6000rpm and both weigh 105 kgs and all mods power trim and tilt, both use identical alternators, the only differences are the RPM and the timing to give that extra power.

Would have been nice if the change was fairly cheap and straightforward but there's never a free lunch is there.
Pity as the yamaha is light compared with many others.
Si