Classic 745i (turbo), What Is This? - BMW Forum - BimmerWerkz.com
1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 12-09-2004, 12:21 AM
n00b
 
Join Date: Dec 2004
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jcarian is an unknown quantity at this point
(Thread Starter)
My mom has a BMW 745i, year 1985, that has been sitting in our driveway for quite some time. She takes it out and drives it maybe, once every couple of months. She told me it was imported from Germany a long time ago, and only 50 were imported to the states. Everything inside the car is in German, all the controls, buttons, etc.

She told me that it has a Turbo, and a bunch of other things that were all stock. I looked at her insurance stuff, and it is listed as a 735i, she said its because nobody even really has this car. Anybody have some info on this model?

It DOES have a Turbo, I am sure.
jcarian is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 12-09-2004, 12:57 AM
n00b
 
Join Date: Dec 2004
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jcarian is an unknown quantity at this point
(Thread Starter)
I have a the VIN number (i think), and it starts like this: WBAFJxxx...

Thats not the American style. Yeah, so I will need some help with this. Again, its a 1985 745i Turbo, I need more info though!
jcarian is offline  
#3 (permalink) Old 12-09-2004, 01:42 AM
2nd Gear Member
 
BaLAnCe17's Avatar
 
Join Date: Oct 2003
Location: Washington State
Posts: 433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BaLAnCe17 is an unknown quantity at this point
Send a message via AIM to BaLAnCe17 Send a message via MSN to BaLAnCe17
wow i have never heard of such a thing...i will have to look into it and get back to you...sounds sweet though!!!

BaLAnCe17 is offline  
#4 (permalink) Old 12-09-2004, 09:19 PM
n00b
 
Join Date: Dec 2004
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jcarian is an unknown quantity at this point
(Thread Starter)
I found the car. Here it is, the exact same one (same model). This thing is a kick ass car. I guess its one of the best BMWs ever built!

http://www.mcsmk8.com/745/745.htm
jcarian is offline  
#5 (permalink) Old 12-09-2004, 09:53 PM
1st Gear Member
 
Join Date: Oct 2003
Location: Kansas City, MO USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
KC Ron Carter is an unknown quantity at this point
Hmm,

I am in the process of adding the M102 Turbo to my e24 Shark.

Here are some wild performance numbers from the best e23 745i tuner in the world.

http://745i.scottiesharpe.com/jarmo/

Jarmo Havulinna = 600 hp at 1.5 bar

He is the m102 guru who built Tuoma Perfection Turbo Upgrade.

On an engine with 500.000 km +
Test conditions:
Fuel: 98 octane unleaded (with lead substitutes)
Ambient temperature: 8 degrees celcius
Turbo boost: 1.1 bar (16 PSI)
Gear: 3rd (40 km/h at 1000 RPM)
RPM range used: From 1600 to 5250 rpm (210 km/h)


The known limitation is the exhaust system. The standard exhaust can not handle all that power so some of it was lost in the pipe due to resistance and back boost. How much was it we don't know exactly, but a good guess is some 40-50 hp (a bit over 10% of total power). We assume that with proper exhaust system these tests might have given some 450 hp at 1.1 bar. New exhaust has already been designed and we know that it can handle min. 500 hp.

We run the engine also at 1.5 bar boost and everything worked well for a very short time we tried it. The turbo, wastegate and chip were able to handle that, but the the fuel system could not.

At ALL power levers we recommend to use
1) A 3 or 4 wire o2 sensor and a mixture monitor such as the HALMETER AFR30 ( http://www.halmeter.com/ )
2) Cartech Rising Rate Fuel Pressure Regulator ( http://www.cartech.net/ )

Interesting point is also that the best power and torque are at fairly low rpms. That gives the opportunity to move those up by changing the camshaft to steeper version. That would further increase the max power quite a bit. Torque would go down in low revs, but that does not matter as it is unbelievable high anyway (you will see it in the curves).

Summary:
Assuming that the 50 hp/0.2 bar ratio is correct all the way from 0.9 bar to 1.5 bar we can estimate the maximum available power from 745 3.4 l engine as follows:

1. Standard engine/exhaust/fuel supply with Motronic chip upgrade and boost control modification
400 hp at 1.1 bar (maximum constant power)

2. Standard engine/fuel supply with chip/wastegate mod and 2.5"exhaust system
450 hp at 1.1 bar with Cartech Rising Rate Fuel Pressure Regulator. (Extra fuel injectors or may be needed for this power)

3. Standard engine with chip/wastegate mod + 2.5" exhaust system + Cartech Rising Rate Fuel Pressure Regulator + add-on fuel injectors
550 hp at 1.5 bar

4. As no3 but with steeper camshaft
600 hp at 1.5 bar

This is 16 psi or 1.1 bar



Later,
KC Ron Carter is offline  
#6 (permalink) Old 12-16-2004, 11:11 PM
Neutral Member
 
Join Date: Oct 2004
Posts: 57
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
M5IAN is an unknown quantity at this point
I'll write you a check for 15,000 for it right now. That is absolutly amazing.
M5IAN is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 1,6,7,8 - Series and Mini Cooper


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
Bmw Track Times dutchbmw Bimmer Talk/Motorsports Talk 2 06-25-2005 09:05 AM
Rare 745i Turbo & Manifold DPDISXR4Ti Classifieds Sell & Buy 0 01-27-2005 10:41 PM
1980's 745i turbo? VenomRS4 1,6,7,8 - Series and Mini Cooper 1 01-02-2004 05:44 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