1) You need to change the lower timing cover and upper oil pan, I believe we did have to remove timing chain sprocket to install M70 oil pan and re time the engine. Gives you a chance to change upper cover seals and apply reinzosil everywhere.
2) https://www.ebay.com/itm/BMW-7-serie...QAAOSwVA5aDD-J
3) Sorry I did not explain correctly the first time, made a little drawing, M70 manifolds bolt up where indicated, then on the M73 sides M73 flanges need to be cut very cleanly and welded onto the M70 manifold flanges (do not cut off the m70 flange), do not bugger up the m73 flange as it will be mated to the head and you will have exhaust leak. If you wanna send the manifolds to us we can do this very precisely for you while the engine is being put together.
4) Running BRK6EK NGK. (coils are M70)
5) Tune... well not 100% complete yet, its running pretty well and high throttle map is good, need to clean up the idle and mid maps still, going back to dyno. Should be ready to purchase by the time you finish, I just send you the chips.
Last edited by dragon850; 05-22-2018 at 11:06 AM.
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Progress... we are getting close. Need to swing by and get some updated pictures.
Sent from my iPhone using Tapatalk
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Keep 'em coming! (Got a few of us here in the OC that are following this thread very closely...)
@Dragon - question on the upper oil pan. It appears that there are two bolt holes in the back of the M70 pan with no existing holes on the M73 block. Did you see that too?
We struggled a bit with the oil pump bolts and getting things aligned, but looks like we are good to go.
The valve stem seals were crumbling so glad we swapped those out too. Was way easier with the heads off any way.
We are getting close to putting the drive train back in. How are we looking on the tune / chips? Let me know if we need to connect off forum, but we may be a week out from getting her back together. Thanks!!
Sent from my iPhone using Tapatalk
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Dragon or anyone else who has accomplished this swap. Did you have any problems with the AC / Water Pump belt tensioner on the M73?
We seem to be having some problems with it staying off the AC compressor. The M70 compressor bracket doesn’t seem to fit, so just working on solution.
Sent from my iPhone using Tapatalk
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Last edited by adwebinc; 08-26-2018 at 07:07 PM.
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Correct.
'07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded|GONE
'02 e46|M54 - Orient Blue|Beige|'Vert|GONE
'00 e39|M52 - Anthrazit Metallic|Grey|GONE
'01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line|GONE
'91 e31|M70 - Schwarz|Schwarz|M70|FOR SALE
'13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
'05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
'07 335i Auto - Montego Blue|Grey|GONE
'05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
'97 528i Auto - GONE
Really excited to get some updates on the various projects in the works here in the thread. Looking at a late Q1 project myself and my biggest question revolves around chips. Running the Wokke V2 M70 chips now, but wondered if someone has something that will be available for the straight M73 swap to get things dialed up a bit-
Current
95 e31 840 Ci (Auto) Orient Blue 61k
11 e90 328i Space Gray
18 F15 X5 35i XDrive White
Past
00 e38 740 i (Auto) Titanium Silver
94 e31 840 Ci (6 speed conv.) Avus Blau (This car was Awesome!)
03 e46 325 Ci (Auto) Jet Black
91 e31 850i (Auto) Diamond Black, Yes, two!
91 e31 850i (Auto) Diamond Black
00 e39 528i (Auto) Jet Black
92 e36 325i (Auto) Laguna Green
No bits yet - will need to go through a shop anyway - no room at my house - figured the shop might have additional lines to p/u some of the parts
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