BMW Intake Designs

[BimmerBreaker]

I wrote an article detailing BMW intake systems, with a lot of emphasis on the M44, M52TU and M54 intake design






Read it here: ASCfabrics.com/intake

It is a rather lengthy article but I tried to keep it focused on being informative

Hope to give some of you a deeper understanding into how your intake systems work - I think BMW intakes are some of the coolest on the market!

[bluptgm3]

ascfabrics.com/post/intake Link
All about creating volumetric efficiency over a broader range of engine RPM.


Sent from my iPhone using Tapatalk

[Hasbro]

Thanks x 2. Last night I was checking out your Rear Subframe/Trunk Floor Issue.

[spfd72]

Cogent discussion. The illustrations are very helpful.

[cyberman]

Thanks for the detailed information! I'd roughly understood the DISA concept, but this made it much clearer. One small nit, I believe it (DISA) first appeared on the M43. I just ordered a rebuilt unit from Bulgaria and he says it's for both M43 and M44.

He says he's running out of cores, so I sent him a suggestion to consider core charges. Even at $40 shipping each way and $110 a part, it's still 1/3 the price of a one of the few remaining new units.

I was thinking of rebuilding mine once I got his rebuilt unit, but after watching his very long video on membrane replacement, I realized it's just not worth it, too much time and too high a probability of damaging it. Ok, maybe I'll give it a whack, but the one thing I didn't understand (or he didn't show) was how he takes up the end play. I skipped around a bit, so maybe I missed something, or I could probably do it as others suggest which is to just machine a little washer/bushing. I did learn something new (to me). It looks like he uses some sort of paste epoxy to fix a vacuum tube fitting in place. Nice stuff as its stiffer (not runny) and takes longer to set. The only other thing is it's not clear how the little one-way valve (connects to another vacuum tube) is sealed. Mine leaked a little bit when smoke tested. But I did see a tiny o-ring, so perhaps that is replaced and I missed it. I wonder how our future counterparts will keep these cars running. In another 10-20 years the plastic will be extremely brittle. Perhaps thanks to 3D printing improvements, parts could be made.

If anyone is interested, here's a link to his 50 minute rebuild video: https://www.youtube.com/watch?v=Gq0Fk57aVCQ