CF70 Tuning

A place for Monkey Bike and Mini Bike (including Grom/MSX) enthusiasts. This will be moderated in accordance with C90Club rules. Welcome!
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Closedfstop
Posts: 2
Joined: Sat Aug 01, 2020 10:43 pm
Rides:: Z50 c90

CF70 Tuning

Post by Closedfstop » Tue Aug 18, 2020 4:36 pm

Hey all, thank you for accepting me into the forum

Kind of asking the age old question here but are there many performance upgrades still available for a CF70 engine as I know the minibike scene isn’t as strong as it used to be.

I see Shire Bikes have a high-lift cam, valve springs, oil pump, larger exhausts and carbs..might there be anything more I can do to it without importing from America?

I have an original 1976 Z50J I’d like to put this into (as a fettling engine) as I’d rather not mess with the Z’s engine and just keep it stock.

No Chinese crap thank you :-)

cozi70
Posts: 477
Joined: Tue Nov 20, 2012 1:16 am
Rides:: Z50,cf70,msx and an auld german 1200gs
Location: Belfast, Northern Ireland

Re: CF70 Tuning

Post by cozi70 » Tue Aug 18, 2020 10:24 pm

Is it a semi-automatic or an automatic cf70 unit you've got?

Closedfstop
Posts: 2
Joined: Sat Aug 01, 2020 10:43 pm
Rides:: Z50 c90

Re: CF70 Tuning

Post by Closedfstop » Wed Aug 19, 2020 12:12 pm

3 speed semi

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