Aluminum vs magnesium vw engine case

Post by sideshow » Mon Aug 11, am.

No, never heard of a pure Aluminum VW engine case. I was under the impression that all the aircooled VW motors were made of a Magnesium-Aluminum alloy. I think the new Mexican cases are cast using the later, stronger alloy - but I could be wrong What do you mean by "so many problems with Magnesium"? It's real easy to warp or crack a set of aluminum heads on a watercooled car where 'overheating' is close to normal operating temp for our aircooled engines. No OEM case was ever made entirely from aluminum. Later cases did have a higher aluminum content, however, making them somewhat stronger in exchange for a little more weight.

Aluminum vs magnesium vw engine case

View original topic: New case quality, aluminum vs mag. Page: 1 , 2 Next. I ordered a new aluminum super case several weeks ago, and it appears the vendor is having issues getting one. I can't get clear answers as to : is this still an issue? Is the quality worth waiting for? Are they still sand cast? Your opinions? Would you just go to a magnesium super case at this point, or wait for the aluminum to become available? My case cracked and leaks oil under pressure, so I'm worried hearing these "poor quality" rumors! A bad case this time around will probably get me shot by my wife! I have an autolina case and love it! I have no issues with mine at all. My understanding is the newer castings in the last few years, took care of the issues most were complaining about years ago. They are a few pounds heavier, about 40 pounds i think, but generally stronger than mag

Some days it's just not worth chewing through the restraints This layer reduces the oxidation of the metal.

Privacy Terms. Skip to content. Quick links. Board index Talk Authenticity Corner. I need the help of the porsche community about the anti corrosion treatment of the gearbox and engine case. The result should be a light brown colour.

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Aluminum vs magnesium vw engine case

Page: 1 , 2 Next. Besides strength and weight what are the differences? The OEM magnesium crankcase has a specified main bearing 'crush' at the specified torque of I think 24ft lbs. If we were to change to the Aluminium case do we need to change the torque? Does one case have better heat conduction than the other? I'm not convinced that thhe lighter case has a significant advantage in terms of performance based on weight. Thank you. There is hardly any difference in the weight - all bug engine cases are mostly magnesium. The later "high aluminium" cases all have AS21 or AS41 cast into the side of the case. The older cases are OK for a stock capacity rebuild if they are not cracked and the head studs have not started to pull out of the case, but are not really suited to high power mods.

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Some days it's just not worth chewing through the restraints Hi Shad, I always thought it was because the German car makers have some kind of fixation about magnesium, the current SL has magnesium seat frames and some other parts as well. The result should be a light brown colour. Is there anybody out there with experiance in magnesium case treatment? John Brooks 62 Roadster 66 84 Cab getting pushed around in porsches since Page: 1 , 2 Next. The issues of dimensional change , work hardening and loss of flexibility will happen to magnesium regardless of whether you overheat it or not. Take the studs out, and a case half is about four pounds! Not even a good bearing imprint. No pounding. Four words: Auto- Craft. It's built like a bank vault. I wanted my engine built once The material of less density between these two outer surfaces tends to act as a connector between these surfaces. Aluminium is, however a better material for engines.

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I thought there were some Type 1-based industrial engines that used an all aluminum case, since weight is not an issue with industrial engines usually. You can have sand cast or die cast in aluminum. I ordered a new aluminum super case several weeks ago, and it appears the vendor is having issues getting one. I would describe it as formic acid rust converter for aluminum. That's something else VW guys just don't do, although few would need it. Bajaman65 wrote: Boolean wrote: Aluminium is much stronger than magnesium. Report message. I can also tell you this: Magnesium is more"malleable". Sand casts generally need thicker walls and webs, have rougher surfaces Rinse then prime and paint. That aluminum case you want can be sourced at a wrecking yard. Aluminium is, however a better material for engines. But in terms of tensile strength or torsional strength The original VW case suffers all of the same issues as a straight mag case