Oil pressure sender conundrum

2673 Views 6 Replies 3 Participants Last post by admiralkhole, Apr 14, 2013

admiralkhole

Discussion Starter · Apr 14, 2013

Hey guys, I started a thread a little while ago about my lt1 swap into my porsche 944.

Well anyways, you all helped me out and I got what I needed but I seem to have a problem. I got an oil pressure sending unit, and I went to put it in and it seems it wont fit...and this is what the previous owner put in its place...

Sorry about the picture...as you all know this is a difficult place to get to.
Any ideas of what's going on here? What can I do? Also, the sensor seems too big to go in its place...like it would hit the block right above the oil filter.
(Also excuse the filter, the guy at the store gave me the wrong one and I just kept it barely on to protect things.)

Thanks!

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shoebox

· #2 · Apr 14, 2013

What you now have is a tube for an aftermarket gauge. The sensor you bought may have been for they years they were used behind the intake. The early year f-body cars had them where your tube is and it was a different sensor and thread. You could use either place. Just plug the one you don't use.

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donzilla69

· #3 · Apr 14, 2013

shoebox said:
What you now have is a tube for an aftermarket gauge. The sensor you bought may have been for they years they were used behind the intake. The early year f-body cars had them where your tube is and it was a different sensor and thread. You could use either place. Just plug the one you don't use.

2nd that . That's usually where a mechanical gauge hard line is put . Like shoebox said .. Plug the one you won't use .

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admiralkhole

Discussion Starter · #4 · Apr 14, 2013

Hey thanks for the reply! Does oil fill that tube that would go to the gauge?
The engine is from a '93 z28. I went to a pull a part yard and found the sensor from a '94 firebird and it was in the same location, would the block be different to accommodate for things like this? I thought they had the same engines these years. What would you recommend doing? I'd like to run my OEM gauge if possible.

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donzilla69

· #5 · Apr 14, 2013

You could put the gauge either place . Not sure where your harness wire is set for but either place will have same result . Yes if that tube is capped there still should be oil going to it . Again like shoebox said if the one you don't need . If gauge is raiser to acess from the side id use it .

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shoebox

· #6 · Apr 14, 2013

admiralkhole said:
Hey thanks for the reply! Does oil fill that tube that would go to the gauge?
The engine is from a '93 z28. I went to a pull a part yard and found the sensor from a '94 firebird and it was in the same location, would the block be different to accommodate for things like this? I thought they had the same engines these years. What would you recommend doing? I'd like to run my OEM gauge if possible.

Yes, the tube fills with oil under pressure and goes to the gauge.

The link I posted says the 93 and early 94s used the above filter location. The blocks are all the same. I'd probably use the location that my engine harness goes to. You'll have a short pigtail if it goes behind the intake and a long one if by the filter. Another consideration is headers. The sensor by the filter may cause fitment issues.

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admiralkhole

Discussion Starter · #7 · Apr 14, 2013

I have a painless wiring harness but it didn't have it on there, the previous owner must have deleted it. No big deal, I have to splice it in to my factory harness anyways...I did manage to get the pigtail though. I removed the fitting for the line, and it was screwed into another fitting. I removed that and was able to fit the sensor in...it has a tapered shaft so it just barely cleared. I also have a heat blanket thing to put over it. I have custom headers made for the car and none of the runners are close to the sensor.

You have been exceptionally helpful and I greatly appreciate the assistance, thank you!

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