yng_750 247 Report post Posted June 8, 2013 also yes it will run without the cover attached. but what ever is missing if you dont have the MAFs connected it will not run good Air fuel ratios and even small amounts of running arent the greatest for the o2 sensors or cats so i would avoid it, also the possibility for something small to fall down a inlet tube. Quote Share this post Link to post Share on other sites
kiwi535 538 Report post Posted June 8, 2013 would prolly trigger a fault code? Quote Share this post Link to post Share on other sites
yng_750 247 Report post Posted June 8, 2013 doesnt appear to which is strange, i left mine unplugged on the 540i ran like crap but no check codes. Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 9, 2013 Just wanting to run it with the manifold off to check for leaks around the damned o-rings which are normaly covered by the manifold is all, so 15 - 20mins of idling with a few revs up to about 3k rpm to help the bubbles in the coolant get out. Quote Share this post Link to post Share on other sites
yng_750 247 Report post Posted June 10, 2013 probably couldnt hurt, if you are doing o2 sensors anyway just do this before you install the new ones. and get rid of the cats if it has them, they are good for sweet frig all Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 10, 2013 Not sure if removing cats will cause ecu trouble. It has pre and post oxy sensors. Will have to look in to it. Made some good progress today. Passenger side valve cover back on. Plugs, coils and other bits that were in the way were cleaned and re-assembled. Driver side valve cover is off and is now drying after a good cleaning. Thermo housing and o-rings connecting the water pipes are now off for the forth time. Waiting on new o rings to arrive from the usa. Found a very dead mouse under the headlight assembly when removing driver side air intake boxes. No evidence of any wires chewed! Whew!! Quote Share this post Link to post Share on other sites
yng_750 247 Report post Posted June 10, 2013 i have removed quite a few cats and never had issues, performance cand standard cars. at worst people recommend an o2 spacer for the post cat sensor. this pulls the o2 out of the direct flow so it still measures the same gas but doesnt have issues with the extra gas speed. Quote Share this post Link to post Share on other sites
Yuen 16 Report post Posted June 10, 2013 Nice work Martin, especially with the leather. Funny about the dead mouse! Quote Share this post Link to post Share on other sites
M5V8 337 Report post Posted June 10, 2013 (edited) Would be interested to know more. What differences do they make? most noticeable was throttle response, it was akin to pushing the 'sport' button. It also pulled harder through the rev range and now i notice the traction control light coming on when I'm on full throttle in higher gears (in the dry!). Mind you my old spark plugs had done 90ks so this experience would be exaggerated. But still highly recommend. I also run the same plugs in my racecar. Edited June 10, 2013 by M5V8 Quote Share this post Link to post Share on other sites
M5V8 337 Report post Posted June 10, 2013 (edited) i have removed quite a few cats and never had issues, performance cand standard cars. at worst people recommend an o2 spacer for the post cat sensor. this pulls the o2 out of the direct flow so it still measures the same gas but doesnt have issues with the extra gas speed. where would you find these spacers? ... i'd be keen on a set. Edited June 10, 2013 by M5V8 Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 10, 2013 Some pics from yesterdays work. The very dead rodent found festering away in between the drivers headlight, and lower air intake box. I think it was a rat, as it was a bit big for a mouse. At least it was warm for a while. RIP ratty. Blankets to keep her warm : Coolant pipes connecting the thermo housing to the coolant pipes traversing the valley area of the block. Still waiting for the large order of o-rings to arrive, the pipe missing the oring, had approx. 1/4 of the o ring sitting underneath it on the block, which was causing the leak. Quote Share this post Link to post Share on other sites
Michael. 2313 Report post Posted June 11, 2013 Mmm a dead rat. How charming... it's quite nasty what one can find. In light of that it's good to see an M5 get back to its former condition, keep up the good work Martin! Quote Share this post Link to post Share on other sites
Tristan 338 Report post Posted June 11, 2013 Rat eh ? That must've made you jump? Reminds me of a guy in Malaysia who had a lizard fall out when he was changing something! Halfway down page Linky Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 11, 2013 Rat eh ? That must've made you jump? Reminds me of a guy in Malaysia who had a lizard fall out when he was changing something! Halfway down page Linky mmm roast lizard. I actually touched it thinking it was some leaves until i saw it's head and then decided to get some long pliers to get it out hehe. Quote Share this post Link to post Share on other sites
Tristan 338 Report post Posted June 11, 2013 mmm roast lizard. I actually touched it thinking it was some leaves until i saw it's head and then decided to get some long pliers to get it out hehe. I had that once getting an old (fake) xmas tree out of our storage unit. Thought it was a decoration but mr. rat had made it home and died in there. haha More on topic: Great to see your progress on the car.. The E39 M5s are so awesome, just saw one of the local ones (unfortunately looking a bit neglected) Quote Share this post Link to post Share on other sites
yng_750 247 Report post Posted June 11, 2013 where would you find these spacers? ... i'd be keen on a set. i have seen them on trademe in the past but none there now by the looks. should find them on ebay etc. seem to recall that it was scarles dealer on trademe doing them so might be worth a shot. or have someone machine them. Quote Share this post Link to post Share on other sites
HELLBM 1560 Report post Posted June 11, 2013 where would you find these spacers? ... i'd be keen on a set.They are actually spark plug defoulers. Have a few sets in stock. Sorts out the post-cat fault codes if set up right. Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 11, 2013 They are actually spark plug defoulers. Have a few sets in stock. Sorts out the post-cat fault codes if set up right. As in some GT1 magic? Drivers side valve cover gasket procedure is now done. This was MUCH easier than the passenger side. Not long now till she is back on the road! Quote Share this post Link to post Share on other sites
M5V8 337 Report post Posted June 17, 2013 They are actually spark plug defoulers. Have a few sets in stock. Sorts out the post-cat fault codes if set up right. PM sent Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 18, 2013 Car is now back on the road. Finally! I ended up using some castor-oil based rubber grease to lube the o-rings when re-installing the thermo. housing. No pinches, no breaks, this stuff is much better then vasoline. KTEMP readings are now correct, and not dropping below the thermostat Threshold of 78deg C Re-assembly took about 3 hours, alot of nuts and bolts to re-install, and torque correctly. here's a pic of the base of the inlet manifold going back on. Quote Share this post Link to post Share on other sites
Michael. 2313 Report post Posted June 18, 2013 Great work. Quote Share this post Link to post Share on other sites
jeffbebe 1560 Report post Posted June 18, 2013 Great work.+1 - wish I had the courage (and knowhow) to do this kind of work on mine! Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 19, 2013 +1 - wish I had the courage (and knowhow) to do this kind of work on mine! Knowhow : http://tis.bmwcats.com/ Quote Share this post Link to post Share on other sites
jeffbebe 1560 Report post Posted June 19, 2013 Knowhow : http://tis.bmwcats.com/It's all Russian to me, mate! Going to overhaul Vanos and replace all the valve box gaskets, etc. The Beisan Systems DIY is incredibly detailed but it might as well be in Russian as well because I seriously doubt I could manage it without f*cking something up badly! Quote Share this post Link to post Share on other sites
BreakMyWindow 1878 Report post Posted June 19, 2013 Google chrome does the translation if you open that link in it. I would only bother with the Vanos on the M62tu when you have to replace the timing chain rail guides. Quote Share this post Link to post Share on other sites
