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m51

  1. Technical Guides for the E36, E30 and E21
    Hi, Been a few years since i posted on here but since i bought a 1997 TDS i haven't left the site looking for advice! So my first issue is when accellerating lightly such as going from 1st to 2nd gear in low revs the car will completely loose all power (and cut out) unless i dip the clutch and...
  2. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    This car has had issues with diesel leaks around the injectors, and a clogged cat for about 3 years. We finally got the injectors to stop leaking, and removed the cat. This car is tuned up to 170bhp. When we test drove it, the car accelerated as it should the first time we gave it full throttle...
  3. BMW ECU Tuning and Standalone Tuning
    Hi all I have fitted an M51 engine in my boat. all was going great until a cheap water hose collapsed and overheated the engine. I replaced the engine and fitted a brand new injector pump. The problem is that i'm getting no fuel at all out of the injectors when turning it over. when I turn the...
  4. General BMW Discussions
    Hi, ive been researching about the m51 engine used in the 325/525 tds' Ive read mixed review on these engines however some reviews are very old I was just wondering do any you guys have any experience using this engine e.g. power, reliability, MPG, any nightmares? im debating dropping one in...
  5. BMW 5 Series Forum - Technical Talk on the BMW E12
    Hi All, After changing timing chains wanted to set the static timing as the car was having serious hot start problem. Got the engine to TDC and insert pin in flywheel and the dial gauge indicates 0.56 mm. Then loosened the inj pump mounting bolts and rotated the pump towards engine and even at...
  6. BMW 5 Series Forum - Technical Talk on the BMW E12
    Hello guys i have good old bmw 525TDS M51 with electronic injection fuel pump that is making a lot of problems (lack of power,shaky idle etc) and i managed to buy mechanical VE pump from M21 that was kinda hard to find it now im interested in pump swap is it so simple? I would like to change it...
  7. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hey guys, I have come to redo my timing on my engine M51 (325TDS), however all the guides on the net say to put the first bright link on the dot on smaller lower cog and then onto the fuel pump cog number 6 marking on the second bright link. Now the issue I have is the 2 chain I have neither...
  8. BMW 3 Series Forum - Technical Talk on the BMW E21
    As the title, what engines have the same size head studs as the M51 E36 325 TDS engine? Looking to uprate to ARP's and also acquire a MLS to go with a mechanical M21 bosch and 12cm HX35. Any help appreciated! :thumbsup
  9. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    The car itself is a E38 725tds automatic, but the engine is shared with E39 and i imagine it was more popular on E39 also, so it seems like a good idea to post here instead. The car drove fine but today after it sat for about 5 hours it refused to start, it seems almost as if both the DME and...
  10. General BMW Discussions
    Good day :) Haven't owned or drove neither E30 or E36 so I hope you guys will help me decide :D I am looking for a classic 3 series as a dd and for some light track use(I plan to modify it). I don't aim at comfort. What I look for is ruggedness, reliability, and fun:D . I don't care about...
  11. General BMW Discussions
    Hi folks, I used to have a number of E28s (520, 525e, 528) and loved them, but sadly got out of the classic car market a couple of years ago due to a high mileage job and a house move that left me garage-less. I've been driving a load of things recently, but nothing Beemer, and I'd like to get...
  12. E36
    Hi all, i thought it might be about time i started a build thread for my project although its been a bit slow moving. I had a E34 525tds which i brought for a little comfort and economy that just frustrated me in terms of performance/handling so it gradually change from a comfy armchair to a...
  13. BMW Engine Conversions
    Hi, i know this probable isnt the right section but have a fault with a BMW m51 engine (in a range rover p38) any help would be much appreciated. BMW M51 engine fault in a range rover p38 over fueling 2.5 td tds omega (read description) - YouTube
  14. BFuk Open Topic
    Hi, i have a problem with an M51 engine which is fitted to the older 3, 5, and 7 series. (the engine it self is in a range rover p38) anyways i want everyone to view my thread who mite be able to help. not just the 3 series section ect, So can i just post the same queston in the 3, 5, and 7...
  15. BMW Engine Conversions
    currently craving more power from my little 318 tds. I know there is the re map option. but being obd1. it not as easy as getting the ecu flashed. Looking into the idea of buying a 325 tds as donor vehicle. And use the engine box mounts looms etc to convert my car into a 2.5 tds compact My car...
  16. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi All, After what seems like an eternity I have finally completed the transplant of a replacement M51 lump into my 1997 325 TDS Touring (in place of the expired one that was in there). The lump that came out was a black manifold version and the lump that has been fitted is an older silver...
  17. General BMW Discussions
    Hi All, I'm near to completion with my engine swap but have an unidentified connector on the engine loom. Brief history is that I bought a mint 1997 P reg Touring non-runner and then sourced a 325 TDS lump complete, which I have now pretty much finished installing. I have no idea exactly how...
  18. BMW Engine Conversions
    I have just bought an otherwise mint 1997 325 TDS Touring that requires a new lump (or a rebuild, though I fear the latter will be too costly). Are there differences between earlier and later engines other than the inlet manifold (mine has the black one) or will either type of engine fit ? I am...
  19. BMW Tuning Forum
    does any one know where i can get one for reasonable money? even though my car has been chipped, will a box give me any extra? is it possible to adjust fuel through and adjustable box? ive never used one so any info will be greatly appreciated:thumbsup
  20. Technical Guides for the E12, E28 and E34
    On the way back home from holiday in Scotland I was overtaking a coach when the TDS had a drop in power, I looked down at the gauge and saw the temp was in the red. The car had the opposite issue when I bought it and wouldn’t heat up which was solved by replacing the thermostat and viscous fan...
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