nlevine
nlevine GRM+ Memberand HalfDork
4/17/24 11:41 a.m.

https://www.facebook.com/marketplace/item/413924971378260/

Looks like a half-decent project if you don't mind the eta engine. Seems to just need a left front fender (which I'm sure some forum members might have stashed away somewhere), and window seals, and maybe paint... But it sounds ok.

 

03Panther
03Panther PowerDork
4/17/24 10:47 p.m.

Never messed around with any bimmers, although I've loved my Beemers. 
what's the "eta engine" reference?

Flynlow
Flynlow Dork
4/18/24 9:27 a.m.

In reply to 03Panther :

Economy engine.  The six cylinder cars came in the -i and -e variant, the -e was lower power and lower redline.  And 2.7l vs 2.5l.  Weirdly, you could get the economy engine with the sport package if you chose.  

03Panther
03Panther PowerDork
4/18/24 8:43 p.m.

In reply to Flynlow :

Did he mean e "P" a, then? Or does e T a mean something I'm missing?

Just upgrading a data point in my own head. Not if any importance, really. 

nlevine
nlevine GRM+ Memberand HalfDork
4/18/24 11:00 p.m.

In reply to 03Panther :

No, it's eta, as in the Greek letter. From Wikipedia, "The M20B27 was designed for efficiency (thus the e for the Greek letter eta in 325e) and low-rev torque." It has 177 ft-lbs vs. 167 ft-lbs for the i version, but only 127 hp, vs 168, and a much lower rev limit.

 

johndej
johndej UltraDork
4/19/24 8:55 a.m.

If anyone grabs it I'm local and can throw in a ton of random parts if interested.

Evanuel9
Evanuel9 HalfDork
4/20/24 11:26 p.m.

In reply to 03Panther :

They're actually really interesting. BMW needed to increase their fleet avergae fuel economy in the 80s. They realized that engines are most efficient at WOT and low RPM's. So they took the m20b25 engine, gave it a really mild cam, took away the secondary valve springs, and took out as many friction generating components. The cam reduced the RPM that it made peak at to, I think, 4500 so they stroked it to 2.7l. They gave it a really long rear end to force the driver to keep the engine at big throttle low RPM.

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