318 head for 2.7??? - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 06-21-2004, 11:18 AM
n00b
 
Join Date: May 2004
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Houston is an unknown quantity at this point
(Thread Starter)
"Some guy" told me I could use the head off a 2.5 on my 2.7 eta engine and improve performance. Is that right and if so, which head.
Thanks.
Houston is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 06-21-2004, 11:56 AM
5th Gear Member
 
Aether's Avatar
 
Join Date: Mar 2004
Location: Fairmont
Posts: 1,184
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Aether is an unknown quantity at this point
Send a message via AIM to Aether Send a message via MSN to Aether
Well the 318 head sure as heck wouldn't work.
It's got two fewer cylinders.

But yes, the 2.5 i-spec head can be switched out to the Eta engine, along with some other pieces to combine the low-end of the 2.7 and the revability and horsepower of the 2.5. If you stroked it to 2.8 liters, you'd have a real monster.


Four Five Six - It's on.
Aether is offline  
#3 (permalink) Old 06-21-2004, 02:04 PM
n00b
 
Join Date: May 2004
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Houston is an unknown quantity at this point
(Thread Starter)
Thanks. That shows how much I know about BMW's! If I make the switch, will I lose compression? Another thread said the compression ratio would go down to 7.5 due to different pistons?
Houston is offline  
#4 (permalink) Old 06-21-2004, 02:39 PM
5th Gear Member
 
Aether's Avatar
 
Join Date: Mar 2004
Location: Fairmont
Posts: 1,184
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Aether is an unknown quantity at this point
Send a message via AIM to Aether Send a message via MSN to Aether
I don't know if it'll drop or not, but it's not going that low.


Four Five Six - It's on.
Aether is offline  
#5 (permalink) Old 06-21-2004, 04:03 PM
n00b
 
Join Date: May 2004
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Houston is an unknown quantity at this point
(Thread Starter)
Thanks. Where should I look to find one already rebuilt?
Houston is offline  
#6 (permalink) Old 06-21-2004, 08:14 PM
Official Bimmerwerkz Biscuit Distributer
 
spiff325is's Avatar
 
Join Date: Nov 2003
Location: SoCal
Posts: 4,752
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of spiff325is has much to be proud of
Send a message via AIM to spiff325is
www.bmwengine.com

or check out bavauto.com

or check out r3vlimited.com

I hate: people who haven't died yet that I hate.
L337 Co-Founding Assistant Executive Director Product Maker of Sunset Sig's Inc.
2000 BMW M Coupe - Dakar-II - S52

"You gotta fix the nut behind the wheel before you fix the bolts on the car"
spiff325is is offline  
#7 (permalink) Old 06-22-2004, 01:28 AM
1st Gear Member
 
Join Date: Dec 2003
Posts: 179
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
1985bmw325e is an unknown quantity at this point
compression will drop and u will need to get custom pistons, or accept the lower compression ( i believe it drops to 8:8:1) and pick up pistons from a 528e or a Super ETA...

or shave the top of a 325i piston
1985bmw325e is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
5 series head unit to amp question. Non DSP greenwave 5-Series (E12,E28, E34, E39, E60) 6 06-28-2007 10:23 PM
CD changer compatibility with aftermarket Head Unit Teh Prof Audio and Electronics 2 11-07-2005 05:22 AM
E36 Overheating / Head Problems Sean Duggan 3-Series (E36) 7 10-05-2005 05:45 AM
E-30 head prob. Need help please mebyon 3-Series (E21, E30) 0 05-03-2004 08:47 AM
Pulling the head llll1l1ll 3-Series (E21, E30) 2 04-09-2004 11:43 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome