Cylinder Head Work question.

[Reno 9]

Hi All,

I am running F7R bottom out of Megane with F7P head.
Skimmed the head with compression ratio 10.7:1,port and polish and running with performance Chip.

So my question :
I am assuming to install bigger intel valve 33 mm out of megane head instead of the F7P stock 30.7 mm , but when i searched for bigger valve i found that increasing can be 1 mm max.

Also do i need to remap after doing that.

Last,Does the F7P ECU accept mapping or i will need a standalone ECU.


Waiting for comments.

 

[minichapperz]

im not sure on the valve front, im not sure if you can take enough out of the head to accept an f7r valve ? and by the time youve got a machinist to do this you could probably pick up a williams head?
and yes you can remap a standard ecu with a chip carrier and someone who can map that chip

 

[Reno 9]

Actually Williams head is not available in our country.
even any F7 engine is very very hard to find.

By the way i lightened the flywheel to 4.5 KG and i will check if i can increase the CR again then i will check for someone to tune it.

Hopefully i will gain some power.