318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Engine

Notices

Engine Tuneups, chips, wires, spark plugs.

.
» Recent Threads
hgiy6brp
Today 12:45 AM
Last post by RichardNeova
Today 12:45 AM
0 Replies, 39 Views
Another Swapped Ti
11-19-2016 06:43 PM
Last post by ZEK
Yesterday 10:02 PM
37 Replies, 9,418 Views
New Magnaflow Exhaust...
08-20-2017 06:57 PM
Last post by DGWGuitars
Yesterday 09:41 PM
2 Replies, 254 Views
Wtb: antenna amplifier
07-16-2015 04:40 AM
Last post by Subbotaproog
Yesterday 06:51 PM
4 Replies, 1,540 Views
1996 BMW 318TI part out...
05-20-2017 09:52 PM
Last post by bmwtinut
Yesterday 06:01 PM
11 Replies, 2,174 Views
M-TECH REAR BUMPER
07-24-2017 11:11 PM
Last post by cmoore
Yesterday 03:57 PM
4 Replies, 387 Views
Low bouncing idle when...
08-19-2017 05:14 PM
Last post by BlackBMWs
Yesterday 03:14 AM
2 Replies, 241 Views
New to the forum/m50...
08-20-2017 01:11 PM
Last post by Joshuah.e
08-20-2017 01:11 PM
0 Replies, 221 Views
Happy Birthday marleymon
08-20-2017 05:00 AM
Last post by 1996 328ti
08-20-2017 05:00 AM
0 Replies, 132 Views
I need black sport door...
08-20-2017 04:15 AM
Last post by Bimmerella
08-20-2017 04:15 AM
0 Replies, 120 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 07-12-2017, 05:51 PM   #1
Nix328ti
Junior Member
 
Join Date: Nov 2015
Location: Minnesota
Posts: 26
iTrader: (0)
Default M54b30/M52b28 cam swap

I've posted a number of times into a thread in this same (engine) forum to share the information I found for OEM cam details. In that same forum I promised to attempt swapping the M54b30 cams into my M52b28. I did this swap last week and figured I should share what I did.

It was fun but also a bit nerve-racking as I could only find a couple references to people that had swapped in the intake side but I found no references to swapping in the exhaust side. I had to be the guinea pig for this one. Here's what I did:

In the OEM cam specs thread I outline the cam specs which is why I landed on attempting this swap. In short, the stock M52b28 cam specs are:

M52B28 // int: 230є(9.0mm) // open:1є close:49є // exh: 228є(9.0mm) // open:39є close:9є

While the M54b30 cams are:

M54b30 // int: 240є(9.7mm) // open:-6є close:66є // exh: 244є(9.0mm) // open:47є close:17є

I think the values speak for themselves. As part of my plan I also thought I should try to retain the opening cam timing of the M52b28 so I advanced the intake cam by 3.5є upon making the final vanos gear installation. I'll get to that later in the post.

For those who are new to this concept, there is a minor tweak to make to the inner vanos gear of the M54 intake cam so it will work well with the M52 vanos hub gear. Basically, it's necessary to cut ≈5mm of the end of the gear so it clears the inside of the vanos hub during vanos actuation. I've attached a pic of what I mean. On the left is the M54 cam with the clipped inner vanos gear; The left is the M52. Try to make it just a mm or two longer than the stock m52 gear. It's pretty easy.

Then all of the M52 cam gear assembly bolts directly onto the now modified M54 cam. Drop it in and done. Fits right into the same lifter tray.

With that done I moved to the exhaust cam. The challenge here is the M54 exhaust cam uses a vanos cam gear assembly with a clutch plate, just like the M52 intake vanos cam gear set. It uses 3 retention studs, also like the M52. The problem is the M52 exhaust cam and gear uses 4 bolts.

After a few sleepless nights of pondering I landed on a plan to attempt to simply lock the stack of gears that are part of the M54 cam gear assembly so it doesn't spin. That way it would act in a similar fashion to the single-vanos setup.

In the end I decided to lock the assembly together using the three, outer most retainer nuts. I discovered that I could do this by adding a simple hardened washer over the studs allowing the retainer nuts to clamp the whole stack together (without the clutch disc).

I eliminated the exhaust vanos hub so it was possible to install the intake vanos and make the appropriate adjustments to the cam timing as well.

It turned out that the M54 vanos gear stack was a tight fit but did have enough clearance when fully assembled so no modifications were necessary on the outer retainer plate. I've attached a pic to basically show what I did. (the one with the washer pic on it)

I installed the vanos (after rebuilding it with Beisan Systems' single vanos rebuild kit and rattle fix).

It was a lot tougher to get move the clutch without a tool to line up the vanos gear; As is the procedure. The up-shot was that the 2mm extra on the inner vanos gear made that whole 'make sure sprocket is spun all-the-way over' fiddling unnecessary as the gears were already lined up.

I made up for the fiddling issue with my new exhaust side modification. LOL.

I finished up by advancing the intake ≈3.5є to put the opening timing where I wanted it by removing cam retainer block from the intake and measuring it with a dial angle gauge on a long shaft wrench. Not super accurate but slightly advanced none-the-less. I tightened all the nuts with blue loctite. I torqued the retainer nuts to 15nm (vs. 10nm).

I then removed the timing block and pin and cycled the engine to make sure there wasn't any apparent binding. And installed the 3 torx retainer bolts on the exhaust gear/sprocket/shim stack. My hope was to lock together the main sprocket shims and give the retainer nuts less to do.

I buttoned everything back up with marginal confidence and put my hand on the ignition with a hair of trepidation. But I forged ahead and it started right up!
Attached Thumbnails
Click image for larger version Name:	VanosGearMod_5mm.jpg Views:	291 Size:	30.8 KB ID:	16901   Click image for larger version Name:	exhaustVanosWashers.jpg Views:	295 Size:	60.5 KB ID:	16902  

Last edited by Nix328ti; 07-12-2017 at 06:12 PM.
Nix328ti is offline   Reply With Quote
Old 07-12-2017, 06:22 PM   #2
Nix328ti
Junior Member
 
Join Date: Nov 2015
Location: Minnesota
Posts: 26
iTrader: (0)
Default Results

I've been driving on this mod for about a week now and finally had the balls to work up to running a few gears up to 7k rpm.

I figured I'd post some anecdotal observations as I have no dyno numbers to share yet.

It sounds a bit different! Unexpected changes:

1. Quieter at lower RPM. That may be due to the cam opening profile. See pic below:

2. Pulls more evenly at higher RPM. With the stock M52b28 cam, the engine would start an exhaust rap at about 6k. It would start to feel like it was flattening out at around 5.5k. Not it pulls very evenly right up to 7k and feels like it will not stop.
3. Apparent increase in low end torque that gives me a bit more confidence to stay in a lower gear while passing on the interstate.

I'm hoping I can get a dyno profile to see where peak torque is now and how wide it is.

As before, the car isn't a super power but is very fun to drive.
Attached Thumbnails
Click image for larger version Name:	camProfileDiff.jpg Views:	65 Size:	69.8 KB ID:	16948  

Last edited by Nix328ti; 08-10-2017 at 01:48 PM.
Nix328ti is offline   Reply With Quote
Old 08-09-2017, 03:33 PM   #3
Guti59
Junior Member
 
Join Date: Jun 2017
Location: FLORIDA
Posts: 9
iTrader: (0)
Default

i'm looking into doing a 330i from e46 into my 318ti, how much of a pain i should be expecting. Also the 330 is automatic and 318 is a stick. Am I correct in assuming that the 5 speed from the 318 will work as long as I don't go crazy with power? First time project so let me know. Thanks all.
Guti59 is offline   Reply With Quote
Old 08-10-2017, 01:54 PM   #4
Nix328ti
Junior Member
 
Join Date: Nov 2015
Location: Minnesota
Posts: 26
iTrader: (0)
Default

It's as much a pain as any other swap. Mostly in the wiring, I'm guessing. Everything else should bolt right up though. I've always planned on this swap after I tire out the M52. It sure would be great to hear from anybody else who's done this one though...

I'm also working on a long time project: LS1 VegaGT Road course car. That's a **** ton of fabrication so this swap will seem pretty easy. Good first time project, IMO.

As far as the Getrag 250, I'd just run it. Unless you're racing the car or doing adolescent level burnouts, it should be just fine. Besides, you can save up for a ZF while you're trying to burn it up. LOL.
Nix328ti is offline   Reply With Quote
Old 08-10-2017, 02:05 PM   #5
Guti59
Junior Member
 
Join Date: Jun 2017
Location: FLORIDA
Posts: 9
iTrader: (0)
Default

Thanks for the insight.
Guti59 is offline   Reply With Quote
Old 08-10-2017, 02:23 PM   #6
Guti59
Junior Member
 
Join Date: Jun 2017
Location: FLORIDA
Posts: 9
iTrader: (0)
Default

I'm just worried about having two cars apart and find out it not a smooth transfer. Really like to hear from a few guys before taking them apart. Thanks.
Guti59 is offline   Reply With Quote
Old 08-14-2017, 03:58 PM   #7
Nix328ti
Junior Member
 
Join Date: Nov 2015
Location: Minnesota
Posts: 26
iTrader: (0)
Default

This is the best overview of swap challenges I've seen. Here's the link:

http://www.bimmerfest.com/forums/sho...d.php?t=584570

Your post got me really digging to find out what the swap challenges are. I still don't understand why swapping the wiring from one car to the other is a challenge other than to try not to dig down to these components and swap them out.

My point is, if you have a donor car available, start taking it apart to dig out all the engine management components. I figure you can be careful of the wiring but not respectful of the car's hard components. That way you get the entire engine management wiring extracted. Then you can decide best if it's less work to try to simply swap the harness to the engine and build a custom solution like the one this guy is suggesting.

Since I'm already very comfortable to taking on some major fabrication, and the fact that I've already stripped an earlier car down to make it into a cheap racecar, it seems less complicated to keep the later engine management.

That said, I could really benefit from your take on this. Look into what this guy is talking about and let me know what you think.

You gotta become a member to see the pix; Might be worth it.

From a higher perspective, all swaps are challenging, and there are always parts of the process that suck. You will be frustrated and overwhelmed. Creating a new thing like this is a serious commitment. I will say this though, the drive when it's done is SO fulfilling. You seriously feel a sort of affinity with Frankenstein and feel some sympathy for his efforts to create life. It's an awesome feeling of accomplishment or a sincere sense if disappointment if not finished. I've done both.

For me, it's worth it. But, like any endeavor involving cars, it's just going to cost money. The trick is to buy your happiness with the expense. It's really got to be a hobby that makes you happy in the end. That is the best thing to support with our hard-earned money, IMO. We only live once and we gotta find a way to happiness or none of this matters.

Wow, sorry dude. I guess it's too late to skip all that self-important blather I just wrote. If you read this far, definitely keep me posted on what you find. I'd love to hear your perspective on this.
Nix328ti is offline   Reply With Quote
Reply

Bookmarks

Tags
3.0 cam swap , m52b28 cam , m54 m52 m50 camshaft swap , m54b30 cam swap , m54b30 cams


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
WI Feeler: 318ti S52 swap alexw Cars for Sale 4 06-15-2014 05:46 AM
328ti Post Swap Analysis BMW_Hatchback Engine Swaps 6 06-29-2011 06:12 AM
CA COMPLETE 2.5 OBD1 5 Speed SWAP LOOK JDEE_HELLROTi US and North America 1 06-22-2010 04:33 PM
cam swap cdonahue Engine 10 12-07-2006 03:32 AM
List of shops that can/have done the 332ti swap. Panzer_M Engine Swaps 30 11-29-2004 05:41 AM


All times are GMT +1. The time now is 04:21 AM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2017, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 95.99 k/111.82 k (14.15%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.