I have heard of an all aluminum m5x motor but never seen one, what cars did they come in and what is their designation?
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aluminum m5x?
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m52tu i believe."I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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M52TUB25
While retaining most of the internal dimensions and components of the earlier M52, the M52TU (Technical Upgrade) featured an aluminum alloy block in all markets including North America. More importantly, it featured a revised head design with Double-VANOS (variable intake AND exhaust cam timing) for additional improvements in torque delivery, economy and emissions. It also featured a variable intake manifold and an upgraded Siemens engine control system.
Applications:
* 1997-2001 E46 323i/323Ci/323ti (M52T)
* 1998-2001 E39 523i (M52TU)
* 1998-2001 E36/7 Z3 (M52TU)
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i wonder if you can slap a single vanos head on that block and not have to worry about dual vanos, software standalones etc.. might as well go euro or s54.No more e30s for me.
88 black BMW OBDII 332is dedicated track [sold]
88 BMW OBDII bronzit 332is [RIP 03/08]
91 BMW 325i [sold]
86 Corolla 'Ae86' HB 20v trd [sold]
http://youtube.com/watch?v=pTj7Hn9v5Rs
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Originally posted by FredK View PostI guess the engines don't do well when they are significantly modified for power output.
Originally posted by etxxz View Posti wonder if you can slap a single vanos head on that block and not have to worry about dual vanos, software standalones etc.. might as well go euro or s54.
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thought so. what a dumb question -.-No more e30s for me.
88 black BMW OBDII 332is dedicated track [sold]
88 BMW OBDII bronzit 332is [RIP 03/08]
91 BMW 325i [sold]
86 Corolla 'Ae86' HB 20v trd [sold]
http://youtube.com/watch?v=pTj7Hn9v5Rs
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Originally posted by BimmerScreamer View PostI have heard of an all aluminum m5x motor but never seen one, what cars did they come in and what is their designation?
Originally posted by etxxz View Posti wonder if you can slap a single vanos head on that block and not have to worry about dual vanos, software standalones etc.. might as well go euro or s54.
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Originally posted by FredK View PostI guess the engines don't do well when they are significantly modified for power output.
A nice feature of the aluminum blocks is the cross-bolted main bearing caps, unlike any of the other single-VANOS motors. My fathers last E30 M3 used an 85.8 x 84 aluminum block with a wild M3 head (stock cams). We revved that motor to the moon (7700 regularly) with no problems, even on track.
Competition-only and big-bore aluminum blocks may see problems, but I don't think it's an issue on a stock-bore, street motor.
I havn't seen much of aluminum blocks lately, what are the issues that come up?
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Originally posted by Stu View PostCompetition-only and big-bore aluminum blocks may see problems, but I don't think it's an issue on a stock-bore, street motor.
I havn't seen much of aluminum blocks lately, what are the issues that come up?
In any case, I don't think there's much room to bore the aluminum blocks. These blocks are rare as heck! I don't even think I see them sprout up for sale these days.
Originally posted by whysimonWTF is hello Kitty (I'm 28 with no kids and I don't have cable)
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Originally posted by AlpineSixAndSeven View PostI have an aluminum M52 they're available in the 528i e39's too i got mine for $750 and it came with everything from the airbox to the Cat's.. it is going in my e30
I beleve the coolant passage issues were when they went to the M54...
You can't bore them out much because they're sleeved. Boring them out can lead to a lot of trouble further down the road.
If you want to, you can bore and re-sleeve, but it's not very cost effective for the extra displacement/power. Why spend thousands going from 2.8 to 3.0? You'd get more gains out of head work like + valves and cams.
IIRC, ALMOST all M/S 50/52 heads are the same casting, so you should be able to mix and match just about any within that particular line. The only difference between the heads themselves is single/dual vanos, cams/trays/lifters.
My ideal motor would be a stroked aluminum block with a worked head (+ size valves) and sunbelt sport cams (which rev to 7500? without valvetrain mods) but most people seem to want anywhere from 2x-5x the price for an aluminum block...
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Originally posted by Adrian_Visser View Postdoes anybody remember what the weight saving are exactly by using the Aluminium block over the iron one? There was a thread on that around a long time ago but i can't remember off the top of my head
Fred, I did some searching on the BF track forum and found the issues you speak of. Perhaps 89.6 stroke doesn't do well in the aluminum block in a competition environment; I wonder if crank/rod angles are a factor. Then again these blocks are so rare that it'd be difficult to find consistent info on the topic of block twist...could have been caused by other issues.
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