What's best head to modify

[Steve green]

Hi

I'm new to the world of micras

Currently have a micra rally car with cg13de engine which is around 125 at the flywheel

But also have a cga3 engine which I am currently building

I was wondering if the cga3 head as standard is simaliar to the cg13 head ? Ie port size , valve size etc

If there are differences would anyone tell me what they are please thanks

 

[frank]

just the hole for the dizzy is the only difference really steve, some corsa pistons with aftermarket rods in the CGA3 would make good power

 

[Steve green]

Thanks frank

Has anyone bored out a cga3 to 73mm ?.

 

[frank]

Thanks frank

Has anyone bored out a cga3 to 73mm ?.

not that i know of mate, l_jonez (sp?) and myself have done 72.5 builds