2.5 M20 Head on Eta Block?

Post Wed Apr 05, 2006 1:33 pm

2.5 M20 Head on Eta Block, will this work??

Any details would be great!

Post Wed Apr 05, 2006 1:44 pm

when you say eta, do you mean 2.7 litre?

Post Wed Apr 05, 2006 2:57 pm

da4x4turbo wrote:when you say eta, do you mean 2.7 litre?

Yes, just wondering if I can bolt a 2.5 head straight onto a eta block.

I have heard of a super eta 1988 onwards if this is any better?

I would be greatful for your help E30Zoners!!!!!

Post Wed Apr 05, 2006 3:55 pm

Maasterbates has done this and he says it is running fine.

Post Wed Apr 05, 2006 4:06 pm

Quaser wrote:Maasterbates has done this and he says it is running fine.

Do you know exactly what he used/swaped?

And when you say running fine is that fine (OK) or fine (better than a standard 2.5)?

Post Wed Apr 05, 2006 5:54 pm

afaik - standard 325i head, bolted to a 525e bottom end.

Needs chipping and the 325i anxillaries and job done - running more torquey they before - so better then standard!

Q

Post Thu Apr 06, 2006 4:51 am

be sure the block you use is post 88. if you use the pre 88 bottom end the compression ratio will be way to low. remmember that this rebuild is only good for about 100000miles not like a stock rebuild. just somthing to keep in mind

Post Thu Apr 06, 2006 10:37 am

bottlecapE30 wrote:be sure the block you use is post 88. if you use the pre 88 bottom end the compression ratio will be way to low. remmember that this rebuild is only good for about 100000miles not like a stock rebuild. just somthing to keep in mind

Are our eta's different to your US spec ones?

How can I tell if the block is a post 88 if its out of the car?