 Type 1 oil pump revisit, For the last time |
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| Chad911sc |
 Feb 24 2026, 10:32 AM
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Member  Group: Members Posts: 269 Joined: 24-September 24 From: Florida Member No.: 28,374 Region Association: South East States  |
Finally put the short block back together this past weekend! (IMG:style_emoticons/default/beerchug.gif)
This is for the next guy who wants to put an o-ringed oil pump into their motor. I purchased one from low budget VW and it had the correct circumference, but sat too deep into the type 4 case. It bottomed out against the cam, and the o-ring groove was inside the case instead of the case bore ( Pic 1,2). So I dropped the idea of the o-ring pump and just ordered a CB performance pump built for the type 4 engine. I once again measured the circumference against the case and it was good. But, after looking at it closely in the case I noticed that the oil intake once again didn’t line up properly, and it only had a pubic hair’s worth of metal riding on the case. It was sure to suck air, even though it was the correct circumference (Pic 3). So I ended up going to the local water jet shop and took one of the oil pump gaskets with me for the shape. They cut out a spacer from 1/8 inch aluminum and it worked perfectly. Now the intake port lines up correctly and the o-ring sits inside the case bore as it should (Pic 4). Forgot to take a picture of the spacer, but it looks like this one from the German Supply kit.….(Pic5) Attached thumbnail(s)     
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