Yet another ZRX

So does the CDI allow you to adjust the advance throughout the rev range?

My CDI is not user programmable so I cannot adjust the curve. I just have multiple to choose from. If you wanted a programmable unit you'd have to go for the Dyna or the other Czech one (I can't remember the name of it ATM).

Did the carbs go on at the same time as everything else? I take it you went from basically a stock bike with a Kerker and jetting, to a 1224, Yosh cams, new exhaust system, carbs and ignition tuner. I bet it feels quite a bit different to ride....... and will surprise a few guys on their sportsbikes.

Carbs only just went on, along with some new masters and wheels I started out with a completely stock bike. First step was pods, jet kit, and the Kerker. Then I did the 1224 with cams, new exhaust, and ignition. Carbs are the latest addition. Next is clutch and suspension.

Oh, and it already surprised some guys on their sportsbikes God knows what it'll do now

If you are happy to share, did you deck the head or run a thinner head gasket as well as the high comp pistons, or keep all of that at stock spec? If if you did change heights, do you know what squish and valve clearences you are running?

I did not deck the head or remove/thin any of the gaskets. I know I could gain some more compression by removing the base gasket but I didn't see the need. I'd rather have that little more clearance than running a higher CR.

Also, was there any porting of the head, valve's cut, or valve springs and retainers changed while you were at it? If so, was it CNC'ed or done by hand, done locally or sent to the US? Was the block done locally too?

At the moment the head is stock with the exception of the cams, ZZR valve springs, and ZZR rockers. I have a spare head which will be sent to a company in Japan for the full monty, but need to update my suspension first and the head work will not be cheap (think on the same order as new suspension...both ends ).

The block and pistons I got through APE. You'll be hard pressed to beat the exchange system they have setup. I also have a spare block sitting at home that could potentially be used as a core swap

Happy to share what I've done and what the plans are. If you want any more info just let me know.

Mate that's some nice numbers getting outta that thing. Love the headers also. Not a fan of the muffler though. What carbines you got on it. Sounds the goods on the dyno.

Cheers mate. To each their own

That's a set of TMR-MJN40's sitting in there.

Yeah mate definitely. That's one thing I love about the Rex the different styles of mods to make it your own are endless. Which I love. I can't wait for tax time to pick up a polished Brock's street meg for mine.

A few newer pics.

Not a whole lot has changed but the major changes are;

New radiator
Remodeled and covered seat
New mirrors
New wheels
New brakes

I think that's about it. Anyway, hope you like the pics (sorry the pics are still a little blurry, they don't seem to like the resizing)

Last edited by J.B on Wed Oct 22, 2014 12:23 pm, edited 1 time in total.

And clutch cover. . The bike looks pretty cool in the flesh. Thanks for the parts. cheers

those wheels look fantastic on it mate.. off a late model kawi sports bike?

And clutch cover. . The bike looks pretty cool in the flesh. Thanks for the parts. cheers

Thanks mate and no worries. Will catch up again sometime soon.

those wheels look fantastic on it mate.. off a late model kawi sports bike?

Cheers. The wheels look very similar to the Kawi ones but these are Carrozzeria ones curtesy of Superbike Supply.

Beautiful bike! Wish my red one was that clean!

Looks great mate. What rad is that you've got ?

Looks great mate. What rad is that you've got ?

It's an Active big rad from Japan.

This looks simply amazing. Great job! Love it.

It's looking awesome J.B. I need to stop spending money on race bikes so I can spend some money on the ZRX again.

Cheers guys. Need to get around to changing the suspension but now I have another toy to play with too

Love what you've done with the ZRX so far J.B, looks great!

Just curious....with the 1224 kits from APE, what do they charge to ship from the states and did you have to send them an exchange block?

Cheers guys. Need to get around to changing the suspension but now I have another toy to play with too

I love that model 6!!!!

My first proper race bike 2004 ZX6RR

Love what you've done with the ZRX so far J.B, looks great!

Just curious....with the 1224 kits from APE, what do they charge to ship from the states and did you have to send them an exchange block?

Thanks mate!

Postage of the kit from APE ran about $150 if I recall correctly. I ended up sourcing a spare block in the US and got them to send it to APE for me. Saved me a little on shipping that way, and I ended up having my original as a spare