Rebuild 400 motor ?

[RoadDogma]

I just pulled the motor out of my FZR400 a couple of hours ago. Runs great with no issues. I've had a YZF600 motor sitting for the past 3 years so I'm finally swapping it in. The 400 motor is available in Los Angeles, if you want it. Let me know if you are interested and I'll send pics.

[Fzrmike33]

After searching the EARTH for oversize pistons for the FZR 400 i have finally located some for $60 per piston, i found them at a place in the UK. They also have big bore kits for the FZR 400 so with that said i can now proceed to work on the bike.

[ragedigital]

...i can now proceed to work on the bike.

Good luck and keep us in the loop! (That means lots of pictures...)

[roadracer162]

That's a good price for the pistons. Wiseco will make a set at whatever specs but it can be coastly for one set. Valves from Ron Ayers is also quite pricey ($700 range for 16) I am looking into Kibblewhite for the valves. Valve guides are the same as the early R1.

I am just closing up a 460 motor that I hope to be racing next year. The other two bikes are relatively stock and they are like the Timex watches, takes a licking and keeps on ticking. I still have another two bikes to build after the 460 is completed.

I love these little FZR's

[Fzrmike33]

How did u get it to a 460 ?. Yeah the uk pistons didnt workout, for different model fzr.

[dru86]

fzr400 1mm oversized pistons link. The same seller also has rings.