How to: Perfect VANOS timing trick+ synchro gear installation + cam gears and hubs E46 M3( part 5)
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- Опубліковано 4 лип 2024
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Bulletproof VANOS 5
Before you install the VANOS itself, its time to get your timing perfect.
We will begin this video by installing the Exhaust Cam Gear/Sprocket and following it with the Exhuast hub and spring retainer. Follow closely! Then comes the fun part in which you get to experiment with Helical gear into the hub. This is where the correct install is critical. You want to find the sweet spot in which the gear travels in and out of the hub in its full range of motion. This action of the helical gear is what effectively advances and retards the cam as you go through the RPM range. The optimal spot that the helical gear is installed will allow full travel. If you install it in the incorrect place, your timing will not advance or retard fully and leave you with an engine that doesnt perform at its peak. This is my persona favorite video as there are a lot of opinions on this step. We show you how to find the sweet spot so your engine is a runner! A side note, we marked on our old hubs and gears and found that even from factory, our VANOS wasn't optimally installed for max performance of the timing unit. Most instructions just insert the helical gear into whatever position it will slide in, sure it will run but this is not optimal. Unless you just get lucky, Youl probably find that your engine falls flat at higher RPM's. My car has been running for a while post this VANO's install, and i can confirm with my engine pulls all the way through 8000 RPMs.
Make sure to make your marks so that the helical gears can be installed in their sweet spot with the VANOS unit. See you next time for the VANOS install.
Get your timing right, and you're gonna love that you took the time to be precise. - Розваги
Quite the high-speed, low drag bone scrape you got going there. A Marine Corp Drill Instructor would be proud! Thanks for making this one, guys. Casey- that's the best explanation of the 'sweet spot' that I've seen. I've watched a number of videos and nobody has shown the impact of not marking/making sure you have the *no-shit* sweet spot. Well Done!
The best video on youtube for explaining this.
Can't wait for the next installment of the series! Good video guys!
thanks man! We just posted a video on installing new upgraded cam bolts, gotta do this before reinstalling the hubs- it comes before this vide- we got a little out of order with the hours and hours of film we have to go through! thanks for watching
Great job fellas! Clean, precise and straighforward!
Thank You, glad you enjoyed it
defenetly best vanos video ever thanks guys
Hope you all are doing well! Invaluable videos! Best on youtube on this subject! Thanks for all your work!
Glad you like them!
Been about a year since I rebuild my 03 E46 M3 and tore down most of the motor, just wanted to update because I forgot to about doing this to my vanos system and sir thank you for showing me this , I don't have a dyno sheet or anything like that but this made a huge noticeable difference all through the powerband it revs quicker mind you the motor has over 200K on it and so does the 6 speed tranny so I baby it and never run to redline, launch or do anything crazy but the motor seems more balanced now .
Thats awesome man! Super glad to hear it made a difference for you as well!
Thank you so much, this helped me a lot to timing my s54.!
happy to hear that, thats what makes doing this worth the time!
Another good video
Awesome Video !!!! very accurate
Thanks! Much appreciated! It does in fact make a difference.
Great video, I now understand.
Great explanation!! Thanx for the lesson
Al7 67 just
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I found I can reinstall the cylinder head without using a special tool to keep from bending the hollow camshaft: start at #1 cylinder at TDC & all rocker arms off valve retainers, use 1/8" aluminum shims on #3 intake & #2 exhaust to prevent scratching cam lobes. Thanks very much for the help timing the S54!
Nice trick! thanks!
Wow..finally a great video explaining it. I used the calipers on intake and found the most travel. I marked my gears before uninstalling vanos/hubs. They were not correct. Bought used so maybe someone didnt find the sweet spot before me. Do I need to advance my exhaust cam since it retarded it to take off the vanos? I have pin in at TDC, intake pin in and have exhaust pin as well. All three are lined up. The lobes were 45 degrees pointing to each other, but TDC was off. Thank you so much!!
I'll be damned. I had no idea different insertion points of the splined shaft lead to different amounts of travel. So the splines have to be differently cut or something so there is one sweet spot only(?)
It has to do with the smaller number of longitudinal splines in the cam receiver hole versus the many more cuts in the helical gear. These guys were the only ones to point out the sweet spot (i.e. identify that you could screw yourself if you just 'stuck it in' and bolted it to the vanos assembly).
Excellent helpfull video . Thanks
Glad it was helpful!
Great vid....👍 thank you
Great job. It would be interesting to watch one for E39 M5
If we had one we would do it
Awesome content- can I apply the same procedure on an E36 S50B32 to find the sweet spot ?
Thanks a lot for making the videos! Really good stuff!!!! :D
When the end of the tension guide was broken (seen in one of your other videos), could this have caused engine pinging/pinking sounds at certain rpm's due to any timing differences from extra slack in the chain? Just wondering/hoping that it's what is causing mine?
Just recently mine has been throwing a light and I get vanos related codes/pressure regulation and a misfire on cylinder 6. Hopefully I'll get to the bottom of it :/ lol
Excellent thank you
Glad it was helpful!
I have looked at many videos of the so-called sweet spot, but I fail to see how this could have any influence on performance. #1 If BMW was doing this in the factory why wouldn't they have it marked as to the engagement spot? They certainly didn't have some guy trying to find the sweet spot on how many thousands of engines, did they? #2 When assembling the Vanos, the gear, when connected to the Vanos pistons, is pushed all the way forward (front of car) and then the hubs are locked down hub bolts. So, the helical gear will travel the same distance when running regardless of the spot they are engaged in. #3 When you take it apart, it's not already in the sweet spot, is it? If anyone knows something I'm missing, please let me know. Regardless, this is still a great video and one that I had used, along with a lot of other printed materials, to do my Vanos.
Hi there, can you explain how you were able to torque the timing chain tensioner to 50lb in such a tight space? It seems way too small to get a torque wrench in there especially with the 32mm bolt. Thanks!
Hello, I need your help! I had the vanos unit removed, but both inlet & outlet helical gears still inside the hubs/cams. At this stage, I was turning the engine over to check timing and the inlet helical gear came out (before this happened I already marked up the helical tooth in relation to hub). However I think I turned the engine over to get the helical gear back in without realising the inlet cam was not turning but the exhaust was. Now my inlet camshaft seems to be completed out of time. I am not sure what to do? Will turning the engine over cause the valves to touch pistons if the inlet camshaft timing is way out?
Any reason why you did not upgrade the Hub spring and washer with some from a e39 m5? seems like a popular choice to do, not necessary but should keep raddle noise down
Well, in this car we bought the upgraded exhaust and intake hubs and drilled oil pump disc and can gears from Dr Vanos. These upgraded parts have a much better fit, so the teeth on the hubs fit perfect, And there are zero rattles. On the other car where I won’t be replacing the hubs and other parts I will consider the E39 parts . Thanks for commenting, love it!
Since you can’t mark the new intake gear’s sweet spot, how was it marked in the video.
well, you can mark the new intake gears sweet spot, we just showed it with the old gear first. you basically put the gear in different positions until you find the spot where it has the helical gear has the most travel in and out- measure it using calipers. it takes a while and just playing with it. When you find the spot where it goes in the farthest, mark the tooth on the New helical gear and mark the slot on the hub that it matches. This marked helical gear will then be used in the next videos that are coming. the helical gear has to be installed on the vanos first, but you have to find its perfect spot by just playing.
Is it same on m52 engine?
Not saying you are wrong but any back up to this or is it just theory? Makes sense if the range of motion on the gear is maxed out on one end of the other but if it is not then the motion or depth is irrelevant. If this falls into "it cant hurt" then I would still opt to do this. BMW thinks this is not true but then they did the design that breaks so we should factor that in also. Good videos. Learned a lot!
I did this and the motor runs smoother and has more power throughout the powerband its stock I did replace pretty much everything but I can vouch on my 200K mile motor it made real noticeable difference and the motor runs more balanced at idle .
Can you do the "sweet spot" with the factory helicol gears as well ??
Che1seabluesdrogba11 Yes!
When actually marked where ours were before pulling them, and found that from factory they weren’t set in the perfect spot. The car runs a lot better now into high rpm
@@FatboysGarage sweet thanks!
Is there anyway to find the sweet spot if you didn’t mark the helical gear and the sprocket?
@@ferrisbuellers thanks for the info brother. I have e36 S52 and did the Beisan vanos seal service (I believe the spline alignment concept is similar to the vid and what you’re explaining). When reassembling I may have missed the importance of aligning the splines properly to get the full range of variable timing.
The car felt amazing after. Restored torque throughout the rev range. But now the car feels flat and a little sluggish. Seems like more revs are needed to get to speed... engine isn’t as eager :(. Still trying to troubleshoot... so many thing it could be (incl non-vanos related issues).
Does this work for al double vanos engines or only for the s54?
What engine are you running? I would have to investigate to give you a answer that Im 100% confident in
Wait ! ******
So from the factory, it’s not in the sweet spot ?
Because I was going to mark helical gears but I guess not
Basically just play with it until I get the most travel?
I’m aware of definitely marking the hubs
Nope not from factory, Its just a theory, however we beleive this could be a reason why some M3's were just so much hotter than others straight from factory. Im sure youve heard that some produced more power than others form factory and it was by chance. Ive driven 5 e46 M's some with aftermarket parts, and none run like the stock one that you see in this video after doing the VANOS properly. Thanks for watching!
There are a lot of BMW guys out there that think the "sweet Spot" doesnt exist. We are going to make a video soon to really put some data and numbers to that.
@@FatboysGarage Did you ever make this video to back up the theory?
When you reinstall the exhaust sprocket with the chain, how do you know you have it on the right tooth? Just by feel and tension ? Yours looks new, why do you change it?
If I'm understanding you correctly, it doesn't matter which tooth it goes on for the sprocket itself, so long as the chain is on it properly and not kinked, tension will be added to the chain much later. The important things to pay attention to is hub installation, and the synchro gears that are inserted into the hub. If this is still confusing please let us know!
Just an FYI, if you go with Dr VANOS, he has the best customer service you've heard of, a big reason i went with them. he can answer questions much better than anyone else online.