blaster mini

[renegade805]

Any one with experience with yz85 in BLASTER frame. What to watch out for fabrication ect. Carb issues aorbox vs pod. 03 roller with02 yz85 fmf sst

[gistmarrs]

I've got a YZ85 mod in a Cobra frame. The biggest issue that I have had with it is trying to get it to launch. Since it doesn't have a power valve, it doesn't have as much torque as the PV motors do. Once it gets up to rpm, it runs really well. It really forces the rider to stay in the perfect gear all of the time.

Your mod will probably weigh a bit more and may make it noticeably sluggish off of the line. You might want to switch out the SST to a Fatty and add a torque spacer in front of the reeds. Those two changes should help it.

[91gtig60]

i am putting a yz85 in a pitster. and i sent my cylinder to eric gore, he mods the base of cyl to change exhaust timming for more low end and a smother band. and its only 90$. also you can do a flywheel weight that will help also

Originally posted by gistmarrs
I've got a YZ85 mod in a Cobra frame. The biggest issue that I have had with it is trying to get it to launch. Since it doesn't have a power valve, it doesn't have as much torque as the PV motors do. Once it gets up to rpm, it runs really well. It really forces the rider to stay in the perfect gear all of the time.

Your mod will probably weigh a bit more and may make it noticeably sluggish off of the line. You might want to switch out the SST to a Fatty and add a torque spacer in front of the reeds. Those two changes should help it.

[renegade805]

I have an 05 CR motor i may use instead
Anyone with experience with these

[robinson446]

we had one done with fmf pipe and shorty and port and polish with vforce reeds hinsen clutch and tranny done so you could shift without clutch it was a screemer beat any 300 ex and 200 blasters all day long

[SMS]

here is one i did back in early 2000 for gnc mx

[renegade805]

05 cr 85 I believe stock gearing was 15/55 what gearing is recommended for tje blaster chassis plus 2 swinger motocross

[gistmarrs]

That's not easy to answer. It depends on what tires you are using, track length, soil conditions, etc.

We run 15/42 on some tracks, and 15/46 on others. We'll even drop to 14/46 on some really small flat tracks in sticky conditions.

Your best bet might be to ask people that run the same tracks that you do.

[robinson446]

WE RAN 48 REAR 15 FRONT

[renegade805]

How was the bottom and with that gearing on the cr did it launch