1/8" Oil Pressure Sender on LS Series

[HSV-GTS-300]

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/frontsump.jpg


http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/OFAC.jpg

Far Left.
97-2000 Corvette OFAC (still available) Part Number 12551587
Comes already drilled and with a metric thread M12 x 1.5
Drill out the metric thread using a 7/16" drill
Tap 1/4 pipe thread
Use a 1/4" male x 1/8" female reducing bush
Screw the 1/8" pipe threaded sender into that.

Centre
Fbody OFAC (No Longer available from GM new**) Part Number 12551595
Comes blank (not drilled and no thread)
Drill out the boss using a 21/64" drill
Tap 1/8 pipe thread
Screw the 1/8" pipe threaded sender into that.
**Part superceded by 12577903

Right
GTO OFAC Part Number 12577903
Comes blank (not drilled and no thread)
Drill the centre using a 21/64" drill
Tap 1/8 pipe thread
Screw in a 90 deg 1/8 pipe male female elbow
Screw the 1/8" pipe threaded sender into that.

Fbody OFAC completed
http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/12551595.jpg

GTO OFAC drilled and tapped 1/8 pipe
http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/IMG_9187.jpg


Lingenfelter (LPE) ling_perf [on ebay] Turbo Supercharger Oil Supply Block. Tapped 1/8pipe = ready to bolt straight on. About $70
http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/LPE.jpg

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/LPE2.jpg

*** LPE block needs longer bolts if fitting to a GTO engine.

Spare Gasket Part No
12553210




Another option is to use a T piece at the back of the intake manifold where the stock oil pressure sender is located.
M16x1.5male x M16x1.5female x 1/8 27NPTfemale Tee Piece.
Speedograph-Richfield (UK) Part Number TP12

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/T_PIECE.jpg

[HSV-GTS-300]

The problem with the one piece Tee above is that you have no control over the direction the 1/8" outlet points once it is torqued up. The side outlet could end up pointing directly at the rear of your intake manifold. The only way to adjust that is to fiddle with sealing washer thicknesses on the male end.


I got a bunch of these swivel adapters made up. The main bolt is CNC machined from stainless steel. Seals are 16mm metric.

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010437.jpg

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010752.jpg

The 1/8" NPT outlet can be positioned anywhere in a full 360 deg, then the main bolt gets torqued and the desired position is held.

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010748.jpg

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010747.jpg

[eboggs_jkvl]

My, haven't we been the busy Aussie! That is some sweet information!

Elmer

[Outwest34au]

Hi HSV GTS 300,
it is very timely that you posted. I have been looking for the best option to fit a sender to the L76 in my Cobra. Your swivel fitting is the tidiest option I have seen.
When you say you had a bunch of them made up does that mean they are for sale somewhere?
If so, can we do business please.

Thanks,
Gary

[HSV-GTS-300]

I've got one fitted to an L76 stroker in a G8-GT near Seattle and another fitted to a new 6.0 LS2 in an offroad buggy in CO. So long as you have room with the Cobra to raise your current GM Oil Pressure Sender 44mm it will work fine.
Seals are 16mm copper OEM quality Elring brand I imported from Germany.

I'll PM you shortly.

[Spicy06Goat]

Sir, I came upon this via a Google search for an LS oil pressure sender adapter. I must say... It is a brilliant solution to a common problem! I'm installing gauges in a few weeks in my '06 GTO, and I would like to run a braided line to remote mount the sender, and this would be perfect.

Please tell me that there is at least 1 more to purchase!

Thanks!

[HSV-GTS-300]

Yes I have about 7 remaining.
:D

[T3n5oR]

mine has been flawless, and it was one of the easiest installs on my entire car.

[adam l98]

Hsv gts 300 ur a dead set legend brother everytime i do some sort of fiddling around research on here u've always got great detailed info on hand , i followed ur removing dod hardware info to the letter patr numbers and all had no trouble at all great work , im in the process of doing an autometer dash in a vz thunder atm and unlike most of the commodores i look at i want my gauges to work , so im wondering if u hav any of those swivels left ?? and also if u know where to get ur hands on the fbody OFAC ??? i hav the corvette ofc but feel more comfortable witha blank 1 i can tap . Thanks mate any help is great

[HSV-GTS-300]

Hi Adam,

Sounds like a great project you have going.
Yes I have plenty of the swivels remaining.
The Fbody OFAC is no longer available new from GM. The Part number supercedes to the GTO cap 12577903 which will be the same as you already have on your VZ. (I've now edited the initial post above).

[adam l98]

Hi Adam,

Sounds like a great project you have going.
Yes I have plenty of the swivels remaining.
The Fbody OFAC is no longer available new from GM. The Part number supercedes to the GTO cap 12577903 which will be the same as you already have on your VZ. (I've now edited the initial post above).

Hi mate yeah its getting there , need to win lotto .... lol , i'd like to buy 1 of the swivels if possible ?? thanks mate

[samckitt]

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010748.jpg

I like this setup, but I need the 1/8" hole to be 1" up from the top of the pedistal on the valley cover. How could I do this & where can I get these parts?
Thanks

[HSV-GTS-300]

I like this setup, but I need the 1/8" hole to be 1" up from the top of the pedistal on the valley cover. How could I do this & where can I get these parts?
Thanks

There's a nice simple way to do it with 2 off the shelf hydraulic fittings, provided you can mark, drill, and tap the 1/8" port yourself. It wont have a swivel function so you'll have to assemble and test fit to mark the side outlet in the correct orientation away from your manifold.
I just trialled the bits here and the shortest height I could get was 1.125" from top of pedestal to hole centre...adjustable upwards to 1.75"

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010051.jpg

[HSV-GTS-300]

On second thought it is possible to get the 1" height and retain the swivel function.

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010050.jpg

[samckitt]

On second thought it is possible to get the 1" height and retain the swivel function.

http://i2.photobucket.com/albums/y20/PerthPurplePenguin/car%20parts/oil%20sender%20tee/R1010050.jpg

Where can I get those parts? Just normal hydraulic parts store?

[HSV-GTS-300]

Where can I get those parts? Just normal hydraulic parts store?

I think you'll find it difficult in USA as I found problems getting everything here in a metric country. The banjo connector needs modifying to incorporate the 1/8NPT thread internally & the metric seals I had to import from Germany.
I'll send you an e-mail.

[samckitt]

Got your email, & thanks for offering to get them to me. Autometer makes an adapter from the metric to 1/8" pipe threads for around $10. I think I'll go that route & get a "T" for it.

Thanks
Scot