VG30ET: Oil Feed Question

[Chris Gregg]

VG30ET has two oil ports on the block. One is on the right hand side where the oil pressure sensor bolts up. The second is on the left hand side near the front bottom of the block where the stock turbo feed line is connected.

I presently have utilized the stock location on the front left side of the block and have run a rubber (non-braided) line from that point to the turbo which is mounted above the transmission. I am looked at purchasing an oil line feed kit. Most braided lines in these kits are too short for using the stock (left side) location.

So, would it be okay to utilize the right side (oil pressure outlet) to feed oil to the turbo? I understand I would need a pressure restrictor in using this port. If I can use the right side port, then how should I go about sealing up the left/stock port? I am concerned if I just put a bolt there, I might block/restrict oil flow to the left side heads!

Summary: Can oil sensor port be used to feed oil to the turbo with a pressure restrictor? How to seal stock oil feed port without impacting oil pressure/flow to left side head?

[maxgtr2000]

Have you tried to find a coupler and extension for the line? Just guessing i would say you can use the oil sensor port with an oil feed t and find something like this http://www.google.com/products?hl=en...&um=1&ie=UTF-8
for the stock line location if it is bspt like the vq.

[pmohr]

You can put a bolt in the pressure hole without risk of restricting oil flow to the heads, assuming that the bolt is of adequate length to only plug the hole and not stick out into the oil gallery.

Yes, the oil pressure sending unit boss on the block should be just fine for a turbo oil supply. You may or may not need a restrictor in the line, it really depends on if the stock block has a restricted oil feed to the stock turbo feed internally (to the block, that is), if there's a restrictor in the stock line itself, or if it's in the turbo oil inlet.

[Chris Gregg]

Thanks for the input. I think the hex bolt looks right. I had not considered an extension in getting a braided line. It will have the ends to join two lines. It might actually be cheaper if ever one shorter line had to be replaced rather than a really long line.

pmohr: Appreciate the feedback. I do know that the oil sensor port is not restricted. I have disconnected my oil sensor (no light by the way) and run a direct line to my oil pressure guage. At start up/cold....I get around 60lbs at idle. At reving I can get above 80psi. Once warms up though, I get about 10psi at idle, 25psi at about 2k rpms, and 40-50 at higher rpms.

[maxmaxima91]

personally i would go with the front oil feed and get the 10 mm banjo to -4 stainless line adapter. If you need a longer stainless line, i have a local shop that makes all my oil lines custom. so i can get whatever length i want. Mine goes from the front of the motor across to the outside of my drivers side frame rail (oil cooler) and then up to the turbo. the line from the engine to the cooler is almost 5 feet long since i ran it along the wiring harness in the core support to keep it safe. If you want a custom line i can get you one pretty easy.

Jeremy

[Chris Gregg]

Jeremy,

Appreciate it! I'm currently looking at an ebay kit that has a 77" line, long enough to reach my turbo from the front port. I just wish I knew who made this kit to give a better idea if it is crap.

http://cgi.ebay.com/ebaymotors/oil-l...spagenameZWDVW

I'm using the front port now, so that won't change. Although, as you indicate, I should consider re-running the line to get it further away from heat. Right now I've got the line running along the block then between the manifold and slave cylinder. Headers are wrapped, but still, running it like you seem to have, will further protect that line! If the kit ends up being crap, I'll send you an email!