Hi guys i know this is a stupid ? but is their a gasket between the mani and head.

X-sactly that kind of split plenum but the Toyota Beams Yamaha headed 3SGE is the best Ive seen as it has no sharp edges.

4 ports all the way! 8 ports where tried and left behind.

design like this d? I still like the 8 port better

Attach file:

---

  aaaa.jpg (105.41 KB)

Thats 700-800 dollar reasons to celebrate great score!
The cosworth of Nissan heads for free gotta love that.

i got it with a spare ca18det that I bought....didnt realise until I pulled it down that it has 4 ports instead of 8

The CA cossy head :) usually from OS so have to factor freight.
I have one without cams but bought Japanese HKS cams for it.
Also chopped the primary manifold as its severely restrictive
for the size of the inlet ports. Mine was getting custom runners
to suit the ports and equal length plenum design.

Each port is like 56mm wide and 48mm tall massive to suit short
stroke ratio design and boost but mani runners are bottlenecks.

How much did that set u back bailz?they are 4 port arent they.

i just sourced a euro head and manifold

That custom one is old tech much better designs available now, look up some Cosworth dual plane inlets manifolds and even some audi race ones for ideas if you are going crazy.

The stock ones work very well and can take bigger TB / Airflow meters etc.

Thank fellas,ill give the standard plenum and manifold a miss.Im spending 40g on the build over 4-5 yrs so another few grand isnt going to matter to much.
Yeah oda thats the style.