mating a 2.5 head to the 2.7 bottom end

[E30QC]

so i've decided to squeeze some juice from my eta by buying a 325is as a donor for the parts i need to get the head and revs. out of it, but i needed to know whta parts i need from what new,?, I was looking at refreshing the head by a local out here, but do i get the gasket kit from a 2.5 or a 2.7? theres' something about additional oil passages, and also will a header from ebay fit into a 2.5 head as well as a 2.7., they always say it fits 323, 325i, etc, but never an E>? so whats the dealio therE?
and do i need to pull the bellhousing off of the Is, or will the engine speed sensor and engine position sensors work for both ecu?

[E30QC]

ohh, what the f' is connector 101?

[ben312]

This has been done a bunch. There is plenty of info. Search it up my man.

[phenryiv1]

Regular eta or Seta?

Typically, you need the HG from the "i" (which I think is actually the same).

I have a HUGE thread with some swap info being compiled, but it is geared toward the Seta.

[StereoInstaller1]

If you are trying to get more fun, just do the 2.5

[e30trooper]

Regular eta or Seta?

Typically, you need the HG from the "i" (which I think is actually the same).

I have a HUGE thread with some swap info being compiled, but it is geared toward the Seta.

i just read all of it, great info! I plan on going 2.7i , but for now just going to use the dual valve springs in my eta. I go up to 4500 alot. I have an 87es

[phenryiv1]

i just read all of it, great info! I plan on going 2.7i , but for now just going to use the dual valve springs in my eta. I go up to 4500 alot. I have an 87es

If you plan to go 2.7i in the future, why not go ahead and swap the 885 head in to go with the valve springs now?

That way, you will have already pulled the head and HG can be replced. no need to do it 2x.

I have found ALL of my parts, including the gaskets- for about $350. If I was running a non-S eta, I'd be lookin gto just do a b25 swap.

If you need a Motronioc harness (and appropriate DME) and 885 head, I will have spares in the very near future.

[e30trooper]

yea well i dont really have a place to do teh swap. I can easily swap the springs and maybe a cam for now. I have a non Seta . Even tho i have a Seta cluster lmao but its not right cuz i can rev to 6k on there, mostlikly its really only 5k just shows 6k on the cluster Im running.

[phenryiv1]

yea well i dont really have a place to do teh swap. I can easily swap the springs and maybe a cam for now. I have a non Seta . Even tho i have a Seta cluster lmao but its not right cuz i can rev to 6k on there, mostlikly its really only 5k just shows 6k on the cluster Im running.

Good point there. You can only do what you can do!