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Discussion Starter · #1 ·
Attached is a picture of an oil pan that I picked up from LEMPI. At first I did not know what it was because I had never seen an aluminum oil pan for an OPEL. The pan fits fine on the block, but it has a dipstick hole in it that is not useable that I would have to plug. Does anyone know what engine or car this would be from and are there any problems with using it on a GT.
Thanks.
 

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Different year blocks had different dipstick boss locations. And I believe one year the dipstick only existed in the oil pan and did not have a hole in the block.
 

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there are two ali pans i'm aware of for the CIH block, one is just a smooth pan, the other has cooling fins on the shallow part of the pan infront of the sump, which only came on Manta Rallyes.
 

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Discussion Starter · #6 · (Edited)
Seems as tho I forgot to attach the picture! :eek: . I have now read the suggested threads and none of them refer to an ali pan with a dipstick hole on the driver side, which is what I have. The boss is there, much further back, on the driver side, but it is not drilled out. Seems to me the best thing to do would be to plug the hole in the pan and just use the existing dipstick location in the block. Anyway here is the pic of the dipstick location.
 

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There should be a steel tube inserted into the pan for the dipstick to fit into....and also the dipstick for that pan is different (and not available) than the ones for the steel pan.

I know of 4 pans used on US 1.9's, all 'rear sump' style. There's steel with the 'short style' dipstick inserted into the block on the driver's side and the dipstick tube inside the block itself, ribbed aluminum with the 'long style' dipstick on the driver's side in it's own metal dipstick tube, smooth aluminum (same dipstick configuration as previous), and smooth aluminum with the dipstick at the right rear corner (Kadett only, with a different type of dipstick as well). The oil sump pickup tube is indeed different between the steel and aluminum pans.

Bob
 

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markandson said:
Seems to me the best thing to do would be to plug the hole in the pan and just use the existing dipstick location in the block. Anyway here is the pic of the dipstick location.
The dipstick through the block has a tube on the inside of the block, below the pan rail to guide that type of dipstick past the spinning crankshaft - and it interferes with the ali sump :( So it has to be removed to fit that nice shinny ali sump you have - which someone has removed the outside dipstick tube from ..... So you need to find the tube AND correct dip stick before you can use that nice polished alloy sump. I have a similar problem - need the dip stick too! As Bob says - they are hard to find :confused:
 

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Discussion Starter · #9 ·
Well here is a quesiton that I am sure will be hard or impossible to answer.
Does anyone have a picture and/or dimensions for the pickup tube for the ali pan? I have a tube that came out of the 2.2 that I can modify. I guess I could also use the spare 1.9 block that I have which only has the crank in it and figure out what it has to look like in order to make one. The other thing that I could use would be a pic and/or dimensions of the dip stick tube and the dipstick that I need for this pan. Based on this thread it sounds like a long shot for both questions.
 

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Ali pan & tube

Here is a pic of an oil intake pipe and an ali pan with its dipstick tube.
There is no guide down inside the pan as the dipstick emerges quite low down near the floor of the pan. I guess a dip stick can be made up out od any old Chevy flexible stick - cut to length and with the oil levels remarked onto it ......... Oh! It has a dipstick in it too - passed this set up on eBay when it went up over $100.... cheap now???
 

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markandson said:
Well here is a question that I am sure will be hard or impossible to answer.
Does anyone have a picture and/or dimensions for the pickup tube for the ali pan? I have a tube that came out of the 2.2 that I can modify. I guess I could also use the spare 1.9 block that I have which only has the crank in it and figure out what it has to look like in order to make one. The other thing that I could use would be a pic and/or dimensions of the dip stick tube and the dipstick that I need for this pan. Based on this thread it sounds like a long shot for both questions.
A search turned up a thread I posted to a while ago:
http://opelgt.com/forums/showthread.php?t=3443&highlight=dipstick
That explains the dip-stick location in the Kadett and GT aluminum pan. The block-mounted dip-stick (later, post '73 block) is NOT usable with the aluminum pan (as pointed out by oldopelguy Stephen V, who I had the greatest pleasure of meeting this weekend). If you want to use the aluminum pan, you must seal off the block dip-stick hole and get a GT dip-stick for the aluminum pan, or fabricate one (see the thread above). The pick-up is tougher to describe, because I am in San Diego tonight (next four vacation days to recuperate from the OMC Picnic!) and my steel and aluminum pans and matching pick-ups are in Calgary. I don't think you can easily modify the steel-pan pick-up to fit the aluminum pan. You really just need a pick-up from a GT, which should be readily available.
HTH
 

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Discussion Starter · #12 ·
I have two pickups, one from a 2.2 which is backwards because the sump is in the front, and one from a 1.9 with a steel pan. I have not checked to see where the problem will be to make one of them work. Seems to me if it's steel, I can fix it. Heat, hammer, welder, tube bender, material availability, I have it all, how hard can it be. It sure would be nice to know what the difference is between the steel pan and aluminum pan pickups tho. I measured the pans last night. The ali pan has a 5" flat spot on the bottom before it rises 3 1/4" and the steel pan has a 6" flat spot before it rises the same, but at a more shallow angle than the ali pan. My guess is this is where the problem will be. The ali pan is also about 1/4" less in overall depth, but I doubt that the pickup will hit the bottom, I can't imagine that the pickup sits directly on the bottom of the steel pan. Such a simple thing, it will probably take me a whole day to work it out.
 

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You're correct in that the pickup interference point is due to the shallower front-to-rear depth of the aluminum pan vs. the steel pan. The stock pickups hover just above the floor of the oil pan, but there's a bit of 'give' in the system due to the inlet screen.

I once had a steel pan get bashed up about 1" and the car ran fine for another year before I took it off the road. When I finally removed the oil pan to straighten it out, I saw that the screen had been squished flat and the sump tube was bent a bit, but there was still plenty of room for oil inlet.
 
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