Buying Beisan VANOS, What Else Do I Need?

[karter16]

I wouldn't mind if there was some real data to back up the S62 springs, perhaps there was on the old forum, but as it stands it seems more like one of those things that everyone does because everyone does it, I will also go back to the S54 part.

I don't believe there ever was - I researched a lot on the old forum back when I did mine. It was simply recommended by Beisan, but they didn't present any actual evidence to back it up other than saying “the S54 springs weaken over time”. Which look, they may well do, but going forward I'll probably just make them a maintenance item rather than using the S62 ones.


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[VisorM3]

Did anyone use the VAC Motorsports Vanos Hub upgrade?

https://store.vacmotorsports.com/vac-motorsports-vanos-hub-upgrade-bmw-s54-p3771.aspx

[bmwfnatic]

True, the internet knowledge collective does evolve over time. Even garage Vanos experts, who fix Vanos issues for a living have changed opinions relatively recently too.

I purchased new S54 diaphragm springs when i had my Vanos unit swapped over. I'll take responsiveness over an imperceptible noise level reduction.

I wouldn’t mind if there was some real data to back up the S62 springs, perhaps there was on the old forum, but as it stands it seems more like one of those things that everyone does because everyone does it, I will also go back to the S54 part.

[ac427]

Yeah I did them back in 2016 because that seemed to be the best thing to do at the time. I think next time I'll go back to the S54 ones, there seems to be some evidence out there that response times are adversely affected.


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True, the internet knowledge collective does evolve over time. Even garage Vanos experts, who fix Vanos issues for a living have changed opinions relatively recently too.

I purchased new S54 diaphragm springs when i had my Vanos unit swapped over. I'll take responsiveness over an imperceptible noise level reduction.

[karter16]

True. I don't think those S62 diaphragm springs are worth bothering with either.

Yeah I did them back in 2016 because that seemed to be the best thing to do at the time. I think next time I'll go back to the S54 ones, there seems to be some evidence out there that response times are adversely affected.


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[ac427]

I guess it's hard to say for sure right, overall rebuilding the VANOS made a massive difference to noise for me, however at the same time as doing the rattle kit I replaced the broken upper chain tensioner guide, redrilled disc, etc so without testing each component individually its impossible to know.


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True. I don't think those S62 diaphragm springs are worth bothering with either.

[karter16]

I've never seen the point of the anti-rattle kit. These engines aren't that quiet anyway. Has anyone actually found their engine to be quieter after fitting them?

I guess it's hard to say for sure right, overall rebuilding the VANOS made a massive difference to noise for me, however at the same time as doing the rattle kit I replaced the broken upper chain tensioner guide, redrilled disc, etc so without testing each component individually its impossible to know.


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[bmwfnatic]

Does anyone know if the new units have their own discs redrilled, or they mix and match form their stock? Even if original, it would be best to keep the disc the unit came with.

I have one here on hand, I had the same concern but on mine it’s 100% a redrilled new disk, there is 0 wear on the original holes.

[Slideways]

Does anyone know if the new units have their own discs redrilled, or they mix and match form their stock? Even if original, it would be best to keep the disc the unit came with.

I would think that they mix and match as they redrill the disks in batches.

[maupineda]

Does anyone know if the new units have their own discs redrilled, or they mix and match form their stock? Even if original, it would be best to keep the disc the unit came with.

[ac427]

I've never seen the point of the anti-rattle kit. These engines aren't that quiet anyway. Has anyone actually found their engine to be quieter after fitting them?

As mentioned drilling the disc is the best option.

Yep, those Torx bolts are made of the same material as the Allen key bolts. I believe the E36 M3 bolts are made of a harder material. Just buy some 12.9 bolts from anywhere.

OP could invest in a gauge and adapter to measure the vanos pump pressure before he does the rebuild. It would be an interesting to see oil pressure before and after the vanos rebuild work.

Is the upper chain guide mentioned supposed to be superior to the OEM part?

[Cubieman]

They made the new discs because some people were not sending back the originals. They have since gone back to redrilling original discs as they built up stock.

Makes sense, was not aware of that.
I liked the idea of the aftermarket discs as regardless of cores we have discs for our cars, just needed a few kinks worked out.

[Slideways]

Keeping your OEM disc or at least an OEM disc is what I'll always suggest.

I'm jaded though as my "aftermarket" Besian disc unfortunately did not have the ability to deliver sufficient oil pressure to vanos resulting it terrible response times when tested.

Maybe they have since fixed this issue, I had to go in there twice as a result, but Raj (RIP) was quite nice/helpful, even refunded all my money for other items I bought from him that were 100% fine, basically got a free vanos "bulletproofing" in the end.


Agree with others, OP is spending way too much here, but if money isn't an issue and all these parts make him feel better, OK.

They made the new discs because some people were not sending back the originals. They have since gone back to redrilling original discs as they built up stock.

[Cubieman]

Feels like drilled disk is still a great bang for your buck in this scenario

Keeping your OEM disc or at least an OEM disc is what I'll always suggest.

I'm jaded though as my "aftermarket" Besian disc unfortunately did not have the ability to deliver sufficient oil pressure to vanos resulting it terrible response times when tested.

Maybe they have since fixed this issue, I had to go in there twice as a result, but Raj (RIP) was quite nice/helpful, even refunded all my money for other items I bought from him that were 100% fine, basically got a free vanos "bulletproofing" in the end.


Agree with others, OP is spending way too much here, but if money isn't an issue and all these parts make him feel better, OK.

[rickybobby]

Feels like drilled disk is still a great bang for your buck in this scenario