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-   -   Help with block turbo line feed (https://www.cobaltss.net/forums/2-0l-lnf-performance-tech-153/help-block-turbo-line-feed-331521/)

Sherwood87 Nov 27, 2025 04:45 PM

Help with block turbo line feed
 
Cant seem to find any info. Bought a pwerks block gen 3 88mm. Wisecos, zzp rods, LNF crank from my old motor and LNF head also going for the 2.1L. There is no oil drain for the turbo so I made one. I'm guessing this is a LEA? Block casting says 12592995, 2011-2017 2.4. where do I get the oil feed from? I have the plug on the end of the head for the galley? Is there enough pressure in the galley to make it to the turbo,
https://cimg8.ibsrv.net/gimg/www.cob...b0dd71e569.jpg
https://cimg9.ibsrv.net/gimg/www.cob...2dcb77f77a.jpg
https://cimg0.ibsrv.net/gimg/www.cob...1e04953640.jpg
or T off the oil pressure sensor? Will the oil from there make it to the turbo going around the block?

KMO43 Nov 28, 2025 12:49 PM

You do not want to take oil from the head to supply for the turbo since it is restricted. You want to drill and tap into one of the oil galley on the block. My gen 3 block is tapped right before the oil restrictor on the block

Sherwood87 Nov 28, 2025 12:57 PM

So I would need to have the motor disassembled and reassembled to tap a new oil port.

KMO43 Nov 28, 2025 01:47 PM

You could use a vacuum and grease and be careful.

Sherwood87 Nov 28, 2025 01:50 PM

Same spot where the flat portion is that was on the LNF block? Just straight through and tap or weld on a fitting? Not questioning you but realistically with a BB turbo the end part of the head that bad? Pwerks replied that it's fine there.

KMO43 Nov 28, 2025 02:16 PM

The oil galley is an inch to the left of your finger in that pic. There was a thread on here years back of a guy who blew up 1 or 2 turbos having it fed from the head.

Sherwood87 Nov 28, 2025 02:21 PM

I've read a lot of posts over the past few days. I believe he blew them from using the fitting right next to the oil filter housing. Have yet to read one of someone using the head. But pwerks is saying it fine and your saying not to use it. I'm just trying to make sure I do the right thing and don't pick the wrong spot. So your saying slowly, use grease or a magnet or vacuum and drill into here?
https://cimg4.ibsrv.net/gimg/www.cob...101a074077.jpg

Sherwood87 Nov 28, 2025 03:27 PM

There is this spot as well under the exhaust cam. Pwerks said ya, just want to verify
https://cimg4.ibsrv.net/gimg/www.cob...e33d9adcb5.jpg

Sherwood87 Nov 29, 2025 03:49 PM

Anybody?

stevieturbo Nov 30, 2025 04:20 AM

Head will be fine. Turbo's don't use huge volumes.

Sherwood87 Dec 3, 2025 11:10 PM

Zzp says I could T off or delete the oil pressure switch. Isn't it just a dummy light? It seems like a long run of line. Pwerks said I could use the port under the exhaust cam. Hearing both. Don't want to smoke the turbo. It is a BB tho.

stevieturbo Dec 4, 2025 04:21 AM

Either would do fine.


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