Posts by mac102004
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2,084 Posts
Sounds about right. Well worth it.
If your a really brave person Thumper Racing sells a 702cc kit w/ Wiseco piston. Or HL sells a 715cc kit w/ JE piston. There is also camshafts available, head and throttle body porting. You can also put a 6* timing key for a 400EX in it, and get the flywheel lightened. TRD gear reduction will get it to top speed faster, but it will run a little slower with under 27" tires.
If your a really brave person Thumper Racing sells a 702cc kit w/ Wiseco piston. Or HL sells a 715cc kit w/ JE piston. There is also camshafts available, head and throttle body porting. You can also put a 6* timing key for a 400EX in it, and get the flywheel lightened. TRD gear reduction will get it to top speed faster, but it will run a little slower with under 27" tires.
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2,084 Posts
I haven't installed it myself, I'm running a CDI and think the two together would be too much timing. But with the 680's you can't get a CDI box, so the 6* key is a very good idea.
First thing I would do is install a 702cc Thumper kit along with a Mudbuster Hotcam. It you want a little more get the throttle body and head ported and polished. If you want a little bit more look into that 6* key and TRD gear.
If you decide to do the TRD and timing key do it at the same time, they installs are basically the same, you have to remove the rear crankcase cover for both.
First thing I would do is install a 702cc Thumper kit along with a Mudbuster Hotcam. It you want a little more get the throttle body and head ported and polished. If you want a little bit more look into that 6* key and TRD gear.
If you decide to do the TRD and timing key do it at the same time, they installs are basically the same, you have to remove the rear crankcase cover for both.
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