compu fire ignition

[pimp incher too]

anybody knows till howmuch rpm the compu fire igintion works,becouse it looks like that i have a rpm limiter and i think that it is the ignition?
<a href="http://www.youtube.com/v/hbTABFv29QM" target="_blank">http://www.youtube.com/v/hbTABFv29QM</a>

regards,leslie

[Torben Alstrup]

8000+ rpm
Its most likely a bad wire or your rotor.
t

[pimp incher too]

the rotor is new and the wires are from msd and works well.
when i turn the linkage full open then also come the feul 40-50cm out off my carbs? the engine is not yet dynotested/jetted,maybe that will bring a solution?
this 2098cc engine is 74x95 and i maked everything light as possible. the counterweigtcranck weights the same as std 69 cranck,i used yamaha pistons,D-ported heads with alu-bronze valve seats. maybe the 95 cilinders is to big for the 74 cranck? the first times he run he did 9500rpm but then the valve spring broken,now i putted berg springs on it. the 9500rpm was also with another ignition,thats why i think it is the igntion.

leslie

[LGK]

the rotor is new and the wires are from msd and works well.
when i turn the linkage full open then also come the feul 40-50cm out off my carbs? the engine is not yet dynotested/jetted,maybe that will bring a solution?
this 2098cc engine is 74x95 and i maked everything light as possible. the counterweigtcranck weights the same as std 69 cranck,i used yamaha pistons,D-ported heads with alu-bronze valve seats. maybe the 95 cilinders is to big for the 74 cranck? the first times he run he did 9500rpm but then the valve spring broken,now i putted berg springs on it. the 9500rpm was also with another ignition,thats why i think it is the igntion.

leslie

Les,

You need some fine dynotuning,nothing wrong with a compufire.it's all in the jetting believe me.

Steve

[LGK]

One more thing,forget about the BERG duals ,at 8K + they won't survive,absolutely not.Can you give more specs on the valvelift etc...that would help ?

Steve

[pimp incher too]

the camshaft is engle w125 with lightweight lifters,aluminium push rods and std rockers,also make my valves much lighter 43x38.

what shoud go wrong with the berg springs @8k? would they get broken?

thanks,leslie

[Jordy/DVK]

 I like your "lightweight" approach.
 What barrels did you use with the Yamaha pistons?
 Did you use some Mahle barrels and open them up?

[pimp incher too]

yes,i bored 8 cilinders from 94mm up to 95mm and i took the 4best.

i took another exaust and now the carburator don't push so much fuel out. the one on the movie is from a bike with katalysator in and it is to much pressure behind. now it runs better.