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ZXR400 Cam Info.

ZXR400 Cam Info.

ZXR400 Cam Info.

Hi all, hope someone can help here. Have scoured the net for this info but to no avail :(

I'm look for cam lifts, durations & opening times for a ZXR400-H. An older thread by MBurgess yielded the lifts & durations (thanks!) but just wondering if anyone (Mburgess ;) ) knows when they open?



RE: ZXR400 Cam Info.

Here is a manual.



and here are other people that probably have leads to answer your questions if all else fails.





Good luck..,

Feeling frisky.........

RE: ZXR400 Cam Info.

What are you trying to do?, std timing is 110 inlet & 102 exh.

RE: ZXR400 Cam Info.

Thanks guys - actually found it at the start of the manual... what an idiot I am! ;)

MB, just prepping a racebike for next year but intend sticking with standard cams for the time being.


RE: ZXR400 Cam Info.

Make up some slotted adjusters out of the std cam wheels. A little bit can be found in the timing. Only prob is the std wheels have to be annealed, machined then re hardend.

RE: ZXR400 Cam Info.

Just grind the slots and forget about heat treating them.

RE: ZXR400 Cam Info.

Unfortunatly std cam bosses are solid (cam sprocket & boss a single forging). You will need to anneal them to machine them down to cam sprockets, slot & machine up some bosses, then re harden. Not sure if ZX6 use same width hivo chain, might be worth checking.

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