525e 2.7 conversion ---

[--alpina--]

Hi guys, im new here as you can tell....

Where do i start.. ok, i want to build a 2.7 engine from the "eta" what mods are neede from what year of vehicle?

can anuyone shed a light as i have some ideas but more is better then one...


Kind Regards

Jimi

[Shawn D.]

Welcome! There has been a lot written about what is called the "e-to-i" conversion. Search on that exact term (w/o the quotation marks) and you'll find some info to start out with. Good luck!

[EuroShark]

You will probably find more information on www.strictlyeta.net

That is a site dedicated to eta based M20 buildups, they have some cool stuff!

[--alpina--]

Hi, Thanx for the reply, the site does have alot of information packed onit..

Cheers


Jimi

[C.R. Krieger]

Hi guys, im new here as you can tell....

Where do i start.. ok, i want to build a 2.7 engine from the "eta" what mods are neede from what year of vehicle?

In the US, the eta is a 2.7. In the UK, I have no idea ...

[pdx 528e]

What's the build date of your car? I assume you want to make a performance M20, and the basic means of doing that are retaining the 525e bottom end and installing a 323i cylinder head or a 325i cylinder head, depending on which eta you have. What matters is the build date of your car. You'll need the entire top end from the donor car, including fuel injection system. The eta combustion chamber shape varies as well as the compression.

This article is probably a good starting point. It is written from the perspective of 325i (2.5 liter) engine E30s who want to gain some displacement and torque. The article specifically refers to British market cars, so it may be more useful than some of the American websites covering the topic. The resulting combination of parts works for taking an eta and putting higher flow parts up top.