[NSXR]

Hi All,

I don't want to start any myth or anything but I have read a couple of French magazines that say that the fe3's CR is 10.2:1

See "Rapport Volumetrique" on the following table:
(Chart compliment of Franckdu61 -- Thx Bro)



I know that all high CR Fe3 engines are 10:1.
So, I don't know if this is an error of the editor (Editors actually, the same 10.2:1 is written in another magazine) or if the french engine is any different from the others but I just wanted to get opinions.

I'll cross check the piston part numbers tomorrow to see if there is any difference.

Peace
NSXR

 

[FE3T]

My owner manual does also state 10,2:1
But when i asked about this at Mazdas main office in Norway they said the correct number was 10:1.

If i have understood everything rigth the CR numbers was:

88-89 noncat 10:1
88-89 cat 9,2:1
90-96 cat 10:1

The 9,2:1 models was probably just made too comply with the fact that in many countries the only Unleaded fuel aviable in the late 80`s, was 93 Octane.
When higher octane unleaded was easyer too find, both cat and non cat versions was made as 10:1.

 

[NSXR]

Thx for the input man.


I checked the pistons available in Europe for the fe3 and indeed there are only two types. 10:1 and 9.2:1.

I wonder how they manages to put the wrong Comp Ration in your manual though.

Not that the the 0.2 difference is important, I jusut wondered bout it.

Thx FE3T

Peace
NSXR