Mk3 MZR Engine info

Technical Area Engine, Transmission, Exhaust etc
2

Hi, 

I don’t have a mx5 but am looking at the option
of putting a MZR in my Westfield.

Was wondering if you guys know the specific
differences between the ford used Duratec and the 2L sport engine? I only know
of VCT on the MX5 engine and heard a rumour of it having better internals?

Also what level of tune have these been taken
to? what’s achievable and what limits are there in terms of max valve lift on
standard pistons? max safe RPM on standard bottom end?

 

Cheers<o:p></o:p>

3

 In standard trim with the mazda ecu and a good header/exhaust you will get 190bhp

Anything above 7750rpm you will get valve bounce with standard springs.

HTH

Paul

4

Rodders, we have the 2.5L MZR lump in our Mazda 6 Sport which is a bit of an under-performer (173bhp @ 6250rpm and 27mpg) is there anything that can be done to liberate any more horses under the bonnet?

5

Has anyone fitted the 2.3/2.5 in an mx5?