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Old 05-15-2015, 08:37 PM   #1
modernist
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the boring but meticulous 2.7i

Here's a pretty engine picture.
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Last edited by modernist; 10-12-2015 at 08:45 PM.
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Old 05-15-2015, 09:59 PM   #2
KIRIEIW
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Awesome!
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1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
1988 325i Convertible Alpine White (SOLD)
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1992 318i Convertible Project-Finished (SOLD)
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Old 05-16-2015, 12:52 PM   #3
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Nice, what do you think of it?
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Old 05-16-2015, 03:11 PM   #4
GDA
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Well done!

Post up some first impressions on the drive characteristics.
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Old 05-16-2015, 03:24 PM   #5
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So what's your recipe? I am just about to start an M20 build myself!

Congrats on a fine finish, looks great.

Luke
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Old 05-16-2015, 03:29 PM   #6
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Haven't driven it much; so far I've noticed that it has eta torque but doesn't stop pulling after 4500. Sounds fierce, loves to rev. Now I know what people mean about M20s being rev happy

I'm having idle troubles, though. Specifically, cylinder 6 misfire. Upon cold start, it idles ok for ~20 seconds, then starts misfiring. It revs smooth, pulls hard, and starts almost instantly, but at idle cylinder 6 is missing. Hoping it's the plug wire I spliced to get the cylinder ID sensor on it; ordered a new OEM one. The resistance matched the other plug wires but it could be arcing at the splice. C191 pins check out for continuity.

Exhaust symphony
Start, idle, and rev

Input appreciated, I'm kind of a noob!
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Old 05-16-2015, 03:35 PM   #7
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Another pretty engine picture, and a before picture. Some difference, huh?
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File Type: jpg IMG_0675.jpg (121.7 KB, 310 views)
File Type: jpg IMG_1949 (1).jpg (102.0 KB, 341 views)
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Old 05-16-2015, 03:43 PM   #8
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I think going from e to I cleans the bay up nicely. Your bay definitely looks cleaner/tidier than the swap I just finished lol.
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Old 05-16-2015, 11:22 PM   #9
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Update: turns out my valves were way too tight. Adjusted them to 0.012.

This thing is a fucking animal. I got it up to 90 and it was still pulling hard. For all those who hate on flat-top piston builds: 8.4:1 compression is plenty. Even with a 2.93 it's a hoot. Can't wait until I get the 3.25 LSD in it. Wooooooooo!
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Old 05-17-2015, 06:42 AM   #10
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You need a 3.73
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Old 05-18-2015, 11:33 PM   #11
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Good job man!!!

I'm in the process myself on building a full 2.7i build. Pretty much got all parts together, just been procrastinating... Hehe
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Old 05-19-2015, 03:40 AM   #12
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Quote:
Originally Posted by totheredline View Post
You need a 3.73
This.

I have a 3.25s in mine and it is too tall.
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Old 05-19-2015, 04:01 AM   #13
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Quote:
Originally Posted by modernist View Post
Update: turns out my valves were way too tight. Adjusted them to 0.012.

This thing is a fucking animal. I got it up to 90 and it was still pulling hard. For all those who hate on flat-top piston builds: 8.4:1 compression is plenty. Even with a 2.93 it's a hoot. Can't wait until I get the 3.25 LSD in it. Wooooooooo!
Why do people hate on flat top builds?
Would the "i" pistons on e rods be better?
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Old 05-19-2015, 11:28 AM   #14
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Quote:
Originally Posted by brahbarian
Why do people hate on flat top builds?
I feel like pretty much every time someone asks about a 2.7i build, someone always says it will be garbage because of the lower compression, even worse than a 2.5, you can't do it without SETA pistons, etc.

It's awesome, haters gonna hate. Skewing information for probably the best mod you can do to an eta.

I'll see how I like the 3.25, this car is mainly going to be a high speed highway cruiser but I guess if 3.25 is too long I can always source a 3.73. Wanna keep some semblance of fuel efficiency. It's fun enough with the 2.93 that I'm not terribly concerned about it.
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Last edited by modernist; 05-19-2015 at 11:39 AM.
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Old 05-19-2015, 11:31 AM   #15
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Quote:
Originally Posted by modernist View Post
I feel like pretty much every time someone asks about a 2.7i build, someone always says it will be garbage because of the lower compression, even worse than a 2.5, you can't do it without SETA pistons, etc.

It's awesome, haters gonna hate. Skewing information for probably the best mod you can do to an eta.

I'll see how I like the 3.25, this car is mainly going to be a high speed highway cruiser but I guess if 3.25 is too long I can always source a 3.73. Wanna keep some semblance of fuel efficiency. It's fun enough with the 2.93 that I'm not terribly concerned about it.
thank you!
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