OK now i'm ConFuSED?

Some people are saying now that the bolt patterns are the same?

i.e A12 is exactly the same as A14, i think they are totally different?
Who can DEFINATELY verify this?

Secondly will an A12 Exausht manifold bolt onto the A14 Head and i would like to use the A14 intake manifold.

I also thought that A14 did have a heatbox?

Any help is much apprecited - Thanks heaps so far!

Oh and thanks Datsunblue and Quinn for the info GREAT STUFF



Cheers

the confusion is between exhaust and inlet

the EXHAUST is identical on ALL a12-15

the INLET varies, there is round and oval port, there is single stud between ports and then theres studs on the outside of ports

basically round ports use a single stud for 1+2 cyl between inlet ports and between 3+4 (2 studs total on top of inlet)

oval ports have a stud outside of both 1+2, and then also outside of both 3+4 (4 studs total on top of inlet)

a-12 is round port
a12gx is oval port
a14 can have both round and oval
a14gx is oval
a15 is oval

and then theres water ways
a-12 dont have em
a-12 gx do
a14 dont
a15 dont, except for a-15's from vanettes do (remember this to get manifold gasket for a-12gx)

edit [there could be slight exceptions, maybe on sunny (b310) motors or something, which im sure others will arise, but this is the info i have found from the work i have done]

also as an added thing i found that with the a-15 inlet manifold from a vanette, the inlet runners actually raise slightly just after the head side of the manifold, i found his good for my turbo setup as i was able to cut off the water galleries from the bottom of the manifold to make a little extra clearnace, exatly enough for what i needed at the time

no-one will probably ever need that info but i thought i should share anyway while i was posting the above

Hey 1200rc,

Thankyou!!

This definately makes sense - great yes mine has oval inlet ports and no water ways.

Thanks very much!