Messages

1

WTB/WTT / M42 spark plug wires

« on: August 08, 2012, 09:49:23 PM »

I still have a spare set since I switched to COP.  I will be throwing them away soon, so if you're interested, you can have them for free, just pay shipping.  PM if interested.

2

Swaps, Turbos, Buildups / M42 turbo

« on: July 01, 2012, 10:27:25 AM »

What model fuel injectors are you using?  And what flow rate did you decide to go with?  With 8:1 compression and 75 psi, my guess is you're running about 30 psi of boost so your injectors have to be over 50 lbs/hr, which is the range I'm looking for as well.  Any insight would be appreciated..

3

For Sale / Denso A/C Compressor from E36 318i

« on: May 27, 2012, 09:53:02 PM »

Bracket, bolts and crank pulley SOLD.
Compressor still available: $25 + shipping

4

For Sale / FS: E36 oil pan in Delaware

« on: May 21, 2012, 09:40:49 PM »

I have a spare oil pan for sale, it's the E36 one-piece complete oil pan.  $25 plus shipping.

5

For Sale / Denso A/C Compressor from E36 318i

« on: May 21, 2012, 09:32:04 PM »

$30 plus shipping for the compressor, bracket and bolts.  $10 more for the pulley.

6

For Sale / Denso A/C Compressor from E36 318i

« on: April 19, 2012, 03:27:50 PM »

I have a Denso A/C compressor for sale from a 1992 BMW 318i.  I'm using the engine as a swap and it came with the A/C compressor but I have no use for it.

7

For Sale / e30,m42 parts, oregon, offers

« on: April 03, 2012, 07:35:11 PM »

Received the intake manifold.  Thanks!

8

Swaps, Turbos, Buildups / Garrett GT35 turbo ?

« on: April 01, 2012, 11:12:49 PM »

I realize this is an older thread, but it's so relevant to my current build that I thought I'd chime in, just in case you haven't progressed since you last posted..

I've been researching turbo sizing for a M42 turbo 2002 project I'm working on and have also been zoning in on the Garrett GT3571.  71mm, 52 Trim, 0.50 A/R.  Running around 23psi boost with 8.5:1 C/R.  With the M47 crank and slight overbore (84.5mm), overall displacement is just under 2 liters.  This setup should be good for around 300 HP.  There's a website where you can evaluate compressor maps at various RPMs based on your engine (http://www.squirrelpf.com/turbocalc/index.php).

This option would reach full boost at 3800 RPM, and would be around 13psi boost around 3400 RPM.  Also, with this setup, the turbo operates between 72%-76% efficiency (76% is peak) from 3800 - 7000 RPM, which means it stays around peak operating efficiency for most of the boost range.  This setup never crosses the surge line, nor does it result in undersizing (when you see efficiency drop off significantly at higher RPMs, i.e. below 60%).  Furthermore, from 3800 RPM to 7000 RPM, you stay at full boost (PR just over 2.5) and the turbo is spinning between 113,000 - 123,000, which is a nice constant range.  Other turbos will have a much greater range of turbo rpms from this 3800-7000RPM engine speed, which is harder on the turbo.  This is a very attractive sizing for a 2.0L.  I've looked at dozens of pressure maps for this setup, and if you try to make boost kick in below roughly 3400, the turbo would be so small that it would run out of pressure above 5500 or so RPM.  

Here's the map I'm looking at with the GT3571:


http://www.squirrelpf.com/turbocalc/graph.php?version=4&pr0=1&pr1=1.07&pr2=1.8&pr3=2.53&pr4=2.53&pr5=2.53&pr6=2.53&pr7=2.53&airflow0=2.2&airflow1=7.3&airflow2=13.8&airflow3=21.6&airflow4=25.7&airflow5=28.2&airflow6=32.9&airflow7=36&product_id=41

Maybe boost kicking in around 3400 and fully engaged at 3800 is considered turbo lag by some, but to me that sounds like a reasonable expectation for a street performer where the turbo will continue to feed 23 psi up to redline at full efficiency..

9

Transaction Feedback / BMW of South Atlanta

« on: March 22, 2012, 09:10:21 PM »

I agree with the great service from BMW of South Atlanta.  I've been ordering quite a bit from them lately and the service is great.  I forgot to put the last 7 digits of my VIN on the second order I placed (they use this to verify you're ordering parts for the right car).  Without asking, they looked up the VIn from my past order, found a mistake I made on the order, adjusted the order and sent me an email asking me to approve the change.  These days, service like that is hard to find.    "Like" them on Facebook to save 5% on your order.

10

WTB/WTT / M42 spark plug wires

« on: March 22, 2012, 09:01:24 PM »

I have a set of plugs I'll give to you for free, just pay the shipping cost.  I just pulled them off an M42 I bought that I'm rebuilding and since I'll be going with COP, I don't need them anymore.