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> Thick oil pump gasket, Pump doesn’t line up
Chad911sc
post Jan 17 2026, 10:26 AM
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So my plan was to start assembling the 2056 today, but I found this when placing the oil pump into the case. I measured the gap needed to fill with a gasket, and it’s right at 3mm. Do they make a thick pump to case gasket that will fill this space, so that the rubber sealing ring will be in the case instead of hanging out the back of it??
The gaskets that came with the pump are way to thin to place the pump in the correct position.


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Jack Standz
post Jan 20 2026, 01:27 PM
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Generally, modifying a type 1 oil pump (please note that there are many styles of type 1 oil pumps) for use in a type iv motor includes actions like:

Clearancing the back of the pump so the cam gear fasteners don't hit the pump. Another option to address just this issue is to use a cam gear from the type iv store that clearances the cam gear and using lower profile fasteners.

Clearancing one corner of the pump cover because it hits an engine case mounting boss.

Longer case studs.

Some add 1, 2, or even 3 o-rings to seal up the type one pump within the case. This of course means cutting grooves in the pump body for the o-rings.

Not 100% sure, but, sometimes the "nose of the pump" where the camshaft driven oil pump shaft resides might need some machining for certain type 1 oil pumps.

Note that there are different types of type 1 oil pumps, like: 6mm studs, 8mm studs, flat cam style, dished cam style, modified for full flow, etc. etc. Others might have additional things done to modify a type 1 oil pump for use in a type iv.

You might want to do some more research about the o-ringed type 1 oil pump you have already. This vendor/parts supplier uses a spacer with their modified type 1 pump for use in a type iv.

https://germansupply.com/type-4-oil-pump-ki...l#product-tabs1

Good luck!
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Chad911sc   Thick oil pump gasket   Jan 17 2026, 10:26 AM
fixer34   I don't think you should need a 3mm thick gask...   Jan 17 2026, 02:30 PM
Geezer914   Check the clearance to the cam gear with the cam i...   Jan 17 2026, 02:40 PM
Montreal914   That groove tawards the inside doesn't look li...   Jan 17 2026, 03:03 PM
Ninja   I'd check the line up of the oil pump ports to...   Jan 17 2026, 04:59 PM
Chad911sc   So the pump body is definitely too long. It’s ju...   Jan 17 2026, 05:26 PM
porschetub   So the pump body is definitely too long. It’s j...   Jan 18 2026, 02:54 PM
Chad911sc   Yes, I think I will be ok using the non o-ringed p...   Jan 19 2026, 09:40 AM
Jack Standz   Gene Berg still makes o-ringed type 1 oil pumps (h...   Jan 19 2026, 10:39 AM
Chad911sc   I looked on the Gene Berg site earlier today becau...   Jan 19 2026, 11:46 AM
stownsen914   I've understood that type 1 pumps require mach...   Jan 20 2026, 08:17 AM
Chad911sc   So I called Gene Berg today and talked to their te...   Jan 20 2026, 12:06 PM
Superhawk996   SMH. This commentary isn’t directed at the OP ...   Jan 20 2026, 12:40 PM
friethmiller   Moral of the story: if you have a decent T4 pump...   Jan 20 2026, 01:11 PM
Superhawk996   [quote name='Superhawk996' post='3241638' date='J...   Jan 20 2026, 01:20 PM
Jack Standz   Generally, modifying a type 1 oil pump (please not...   Jan 20 2026, 01:27 PM
Jack Standz   Or use a good type iv oil pump and pin the shaft l...   Jan 20 2026, 01:32 PM
Jack Standz   [quote name='Superhawk996' post='3241638' date='...   Jan 20 2026, 01:34 PM
Geezer914   Oil pressure on a T4 pump compared to a 26mm T1 pu...   Jan 20 2026, 03:58 PM


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