Building an eta based 2.7

[Richy325iTouring]

what is need exactly cos ive been toying with ideas for weeks and still have this bloody 173 head here so had another little thought.

No speculation really only want advise from people that have done it or ant

Richy

[chu346]

Do you mean 731 head? You can use a Eta block with the 731 bare head (not cam) and use 325i parts for the rest.

Or do you have a big budget for the 325i/Eta rebuild?

[Richy325iTouring]

got a 731 head here
just need the eta block
what cam do you use in the head though

[chu346]

I've used the Eta head with a 325 cam.

What i've heard from Ant is that a 325 cam won't go in a 320 head without modification of some sort. Best bet is to get a uprated cam anyway.

[Templ8e30]

I've used the Eta head with a 325 cam.

What i've heard from Ant is that a 325 cam won't go in a 320 head without modification of some sort. Best bet is to get a uprated cam anyway.

The 325i cam will go into a (731) 320i head without any mods at all.

The 325i/320i cam will not work in the (200) eta head because the eta cam uses 4 out of the 7 available cam bearings, as such the head needs the other previously unused bearings drilling for the oil feeds.

Use a 525e bottom end mated to a 320i head with 325i cam/inlet and exhaust manifolds/injectors/management etc with one of Ant's 2.7 chips for best effect. Using a schrick or piper cam gives really good gains too.

Cheers,

Iain T

[Richy325iTouring]

got the head, inlet and injectors
just need another chip off ant eta block and a cam

[chu346]

I've used the Eta head with a 325 cam.

What i've heard from Ant is that a 325 cam won't go in a 320 head without modification of some sort. Best bet is to get a uprated cam anyway.

The 325i cam will go into a (731) 320i head without any mods at all.

The 325i/320i cam will not work in the (200) eta head because the eta cam uses 4 out of the 7 available cam bearings, as such the head needs the other previously unused bearings drilling for the oil feeds.

Use a 525e bottom end mated to a 320i head with 325i cam/inlet and exhaust manifolds/injectors/management etc with one of Ant's 2.7 chips for best effect. Using a schrick or piper cam gives really good gains too.

Cheers,

Iain T

Just going on what I was told. I had the holes drilled for the other 3 bearings in my head. I've not tried a 320 head yet.

[scotty86d]

Why not use a 325i head instead of going to the performance of getting all of the bits fitted into a 320i head. Doesn't the 325 head have extra water ways or something as well?

[Jimbob]

There's 2 active 2.7 threads that have outlined every possible way of making a 2.7

Locked.