It's a pitty we run with the IFMAR rules for sanctioned races here in Australia. 7mm crank hole and turbo cut can not meet with the hole. I can see the advantage of being able to use bigger crank port diameter for more power.

Zoom, m-speed does produce ifmar approved crankshafts for the TZ 3 port as well. But the picture is not available on their site, I wondered how it looks like

dangggggg that looks awesome

there goe sthe fuel economy hahaha

the bore looks huge

Yeah, probably be lucky if can complete 5 minutes of running

Hi

I tried the engine on Sunday and it flies. I had more power than the mega, pity my driving wasnt the best!

I havent reduce the head clearance yet but will try once its fully run in. Another couple of tanks should do it

Cheers

Hey, I think i contributed a bit when this thread first started so now i need some info. Is this the best engine for around 16,000yen. Im getting it from japan and i used to live there so you'll have to bear with me. I want to do some racing nothing too serious. And is there much performance wise difference between the 3 and 5 port. I would expect the 5 port to be faster so is that all. I want to get into onroad since there is a track near me opening soon.
Thanks.

stick to the 3 port at least you know it will be racelegal

it has plenty of power also
you will be very impressed

Yeh, i think i will get the 3 port. It is race legal and i like blue better.

Yea i had about an extra half a lot of fule in a 5 min race with the stock crank so i wonder how that would do.

You mean EFRA rules. Those limit the crank as you say. IFMAR rules allow any mods to crank.

AFM

Any one else having troubles with only just finishing a 5 min race with the TZ 3Port?

Nope cause i dont have one

Are you kiddin? I had like 1/3 tank left over after each 5 min qual at the Nats!!!

I stand corrected...... It's dremel time