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Mon Oct 09, 2006 2:15 pm

WE TRIED TO WARN YOU!!!!

John
Aircooled.Net Inc.

jamestwo wrote: Thumbs down for the Empi AL case. It porous and mine seeps oil, rather pours oil from the main oil gallery.

TWO thunmbs down :x

Thu Oct 19, 2006 7:06 am

interesting!some peaole likes alum cases,some hate then..but what about alum cases generations???thanks...

Fri Nov 24, 2006 11:03 pm

I have an Auto Linea case, aluminum. Any idea who imprted / casts that (other than auto linea) ?

Would that have been an EMPI or SCAT or some other brand name I may have heard?

Works fine for me.

Sun Nov 26, 2006 11:25 pm

So the Alu case is heavy. What is the weight of the As41 and the Alum case?

Is the difference 20 pounds, 40 or what?

Mon Nov 27, 2006 2:08 pm

the as41 case weighs about 24 lbs and the aluminum is something like 44lbs

Mon Nov 27, 2006 8:14 pm

john@aircooled.net wrote: WE TRIED TO WARN YOU!!!!

John
Aircooled.Net Inc.

jamestwo wrote: Thumbs down for the Empi AL case. It porous and mine seeps oil, rather pours oil from the main oil gallery.

TWO thunmbs down :x

John,
is there any good aluminum cases out there right now?
Reason i ask is, i'm looking to build a stroker motor in the future and was wondering what you thought.
Aluminum case or a welded/modified stock case like a Super case?

Thanks,
Craig

Tue Dec 19, 2006 10:31 am

GM automatic transmissions seap oil... from the factory they had an epoxy coat across the top of the casting.

Might be worth looking into to plug up some holes.

Wed Dec 20, 2006 7:27 pm

Had a missalingment issue with my oil pump om my aluminum case but did not even think about shimming it <doh> .
I ended up porting the pump to the existing hole in the block and machining the drive dog on the pump for clearance with the cam .
The engine has great oil pressure ,and runs solid .
Talk about the hard way , well the case is holding up well will be going stroker (1904) some time in the future .

Wed Mar 21, 2007 5:47 pm

I was in the Formula SAE race team's garage today looking at their competition car for this season. It uses a magnesium alloy Suzuki 4-cylinder superbike engine. So VW's not the only company that uses it. They've been using the magnesium engines for years and have had great success with them placing 19th out of over 140 teams last year at the championship.

Fri Mar 23, 2007 10:24 am

I'm having my engine built with an aluminum case since a guy screwed up my mag case. I 'm prepared to hear someone call me crazy but here is my setup:

Stock style aluminum case(not highroof) forged counterweighted balanced crank. the beter, less problematic rebushed/rebuilt rods. reground stock cam. stock oil pump. all for a bone stock dp 1600 with rebuilt heads. doghouse shroud. 34pict carb, new stock german exhaust.

I'll probably save up for a set of new heads for when the rebuilt ones start to have trouble. I'm hoping to get some miles out of this one with some frequent highway driving on my semi daily 20 mile commute, and maybe a 1000 mile trip to california early on. I'll post any problems/praises as soon as I get it and put it in the car.

Sun Mar 25, 2007 7:01 pm

I plan on getting one this week super case from vw parts.net hopefully.Was going to buy sat but they were out of stock but had one with 10mm case studs they seem to look pretty good from what i saw and yes they are noticeably heavier than the mag ones but it aint an issue for me.My current as41 case is already bored once over stock size(line bore)Just rebuilt the motor in oct for my buggy dpr c/w 69mm crank new 90.5s,110 cam,

Just been having probs with the main seal blowing if i take the rpms above 5500 went thru 3 of them this season dont know if related to install or a prob with the case somewhere.

So being that everything internal is new might as well make it all and make some minor changes while i am at it.Going to go with 94s this time around,and have flywheel cut to 12 pounds, plus if i decide to stroke it down the road i will be able too.A friend told me before i built it just get the supercase and be done with it cause you will go bigger real soon.I feel in the long run i will save money vs having current case machined or buying another mag then having machining done.

Mon May 07, 2007 4:12 pm

just received a as41 case in addition to a 73 beetle .. this might be a stupid question but i have read some one here and every seems to say that the as41 case is good for 10 second runs.... but mine will be a daily driver and i was wondering the durability of this case.... ( im sure if its good for 10 second passes it should be bullet proof for a daily) but thought that i would ask anyways because im bored...

Mon May 07, 2007 10:56 pm

durability is fine for a daily driver. people have been using them for their daily drivers for decades. (assuming your case is a good case) Check your case out, whats the align bore? is it dual relief? large oil pickup? 8mm head studs deep studded on #3? just a few things to look into before you spend a lot on machine work$$$

Tue May 08, 2007 8:23 pm

Muffler Mike wrote: GeorgeL wrote: Looks like you are getting way too much oil to the heads! Have you considered restricting this flow with smaller orifices in the pushrods?

George

Actually that has come up.
But the ammount is fairly insignificant in my eyes.
this picture is of the 1-2 side at 5000 rpm. it splashes and drains right away with no build up.

Basically what i think is happening is there is a build up of droplets and the next drop slung off the crank and windage keeps a wall pushed up agains the side of the case and doesnt allow easy drainage back to the center of the case to the sump, eventually building up enough of a wall that it finally gets to the holes under the lifter bores and pushes up the tubes. Thus i put the hoses in the side of the case to give the oil a different place to go. But i dont know if the hoses i used are large enough to control the volume. Maybe after the sac race this weekend, i will try and get that cover back and do another exparament.
Other factors are involved in my motor too like 30mm oil pump running at 80 lbs with a lot of side clearance on the rods, so there is a lot of oil being slung off the crank.

I wouldnt mind trying to make somethign inside kind of like a windage tray, but only on one side and have it mount up tight under the lifter bores almost like a delfector shield. but this year there was NO time for that

I am curious. Why battle this problem with hoses and ports when you could run a dry sump system and be done with it? If a complete dry sump system is inconvenient, or two costly then at least run a two stage pump, use one for scavenging the area of concern and returning that oil to the bottom of the sump where it belongs, and the other for pressure. Not to mention the fact that scavenge pumps pull vacuum and lower crankcase pressure which is what you are fighting here. 8)

Sun May 13, 2007 3:04 pm

I have an aluminum case built 2332running 185+ hp at the flywheel and love it cant complain havent seen any leaks but it wouldnt be a bug if it didn't drip at least 1 drop of oil :shock:

Sun May 13, 2007 5:03 pm

CarreraRS2.7 wrote: I was in the Formula SAE race team's garage today looking at their competition car for this season. It uses a magnesium alloy Suzuki 4-cylinder superbike engine. .

The problem with the VW mag cases is that what IS made, is made on old worn out equipment. The NEW mag cases today are NOTHING like they used to be.

The CB Aluminum case has proven to be the best Aluminum case solution - for me.

Sat May 19, 2007 2:59 pm

Ok so how can you tell which case you have in your car?

I have an AJ something case. Is that Aluminum? AS21 or AS42? or?

Sat May 19, 2007 3:01 pm

Fowvay wrote: Ok so how can you tell which case you have in your car?

I have an AJ something case. Is that Aluminum? AS21 or AS42? or?

AJ is a late FI case and is AS41.

Sat May 19, 2007 3:06 pm

Thanks Glen. You mentioned you have an AS-21 so what did that come on and what is the benifit to that versus the AS-41?

Sat May 19, 2007 3:20 pm

I now have a AS41 case on my new engine.

There are actually 2 different AS41 alloys. The original one was not as strong as the AS21. The newer one is the best of the bunch. The AH and AJ are the newer AS41.