Additional Oil Pressure Location for 1HZ/1HD-T?

[DanS HJ-45]

Are you going to use the factory oil pipe with banjo? Either way could just buy the banjo bolt, it's cheap. Let me find where I posted the info and I'll come back with a link

I've probably got a correct banjo bolt for it in my stash, but the question I have is what size banjo bolt do I use. 8mm? 10mm? 14mm? I am not using the stock/factory turbo, or oil pipe--but I would like to be able to in the future. To that end, I'm considering drilling and tapping it to match the stock banjo bolt, and then fitting an adapter from that factory banjo bolt to JIC 4 (which is the size of the oil line to my turbo).

Dan, I can't remember, are you running a CT26? If so, then I vote for the banjo bolt and the 1HDT pipe.

Nope. Not stock. It's a TurboGlide setup. Which is a GT28RS turbo. Using JIC 4 oil pressure line. But the banjo bolt would be simply to make it so that I *could* use a CT26 and stock setup someday--if I wanted to.

Are you guys talking about a banjo bolt for the turbo oil supply that has a 1/8npt fitting in the top of it? Link?

I am doing all of this to avoid NPT threads. Toyota doesn't use NPT with oil lines, and I really would prefer to stay as "stock" as possible.

Here's what I am looking at:

Or something like it. That's a 10mm banjo fitting, to an AN 4 (JIC 4) nipple. Which I can connect to with my hose to the turbo itself. Banjo Adaptor 10mm Banjo to No 4 JIC 7/16 x 20

Dan

 

[tweeek]

I tjough this thread is about adding a location for an additional oil pressure senders. Thats what I thought you were refering to.

On that subject, it looks like there are some aftermarket banjo bolts out there, with a 1/8 NPT female port in the head, to allow an additional oil pressure sender. The question is whether they can be sourced in the correct size for this application.

 

[tweeek]

FWIW, I just went out and measured. Its M12X1.25.

12x1.25mm Banjo Bolt with 1/8 NPT Female Port | Pegasus

I figure this might work nicely to get your oil supply and an extra sender.

 

[DanS HJ-45]

I tjough this thread is about adding a location for an additional oil pressure senders. Thats what I thought you were refering to.

On that subject, it looks like there are some aftermarket banjo bolts out there, with a 1/8 NPT female port in the head, to allow an additional oil pressure sender. The question is whether they can be sourced in the correct size for this application.

Toyota oil pressure senders and switches are 1/8" BSPT. Very, very similar to NPT, but very slightly different. Enough that they will start to thread in, but will mess up the threads if you keep going. But if you were adding an aftermarket pressure sensor then the NPT probably makes sense.

FWIW, I just went out and measured. Its M12X1.25.

12x1.25mm Banjo Bolt with 1/8 NPT Female Port | Pegasus

I figure this might work nicely to get your oil supply and an extra sender.

That's the stock 1HD-T turbo oil supply line banjo bolt?

Just checking before I get too busy making plans to drill and tap the block in that size. I like @damienperu setup, with a relatively small diameter drilled hole, and only a little bit of the larger, tapped threads.

Dan

 

[DamoPeru]

Order the 1hdt banjo bolt and copper washers and use them with the piece you showed, will be peace of mind when your tapping, for length as well

 

[DamoPeru]

just a better view of the holes

 

[DanS HJ-45]

For what it's worth, I ordered stuff do to an M12x1.25 banjo bolt to an AN4 fitting. Maybe next week I can get it drilled and tapped in...

Dan

 

[broth9640]

Does this look doable if the motor is in the vehicle without pulling fenders or using an angle drill? I was thinking it would be possible if the exhaust manifold and turbo are pulled.

 

[DamoPeru]

i would be afraid of doing this if it were on the vehicle, the long narrow hole goes between cylinder bores. mine was done in a machine shop on a press drill with the block precisely leveled.

 

[DanS HJ-45]

I'm going to test it with my spare 1HZ block first. But we shall see...

We shall see just how difficult it seems to be using that block (which may, or may not be useable someday) before I drill anything on one of my good ones.

Dan

 

[DanS HJ-45]

OK, I'm rethinking....

The hole to be drilled on the right side of the block is 150mm deep, is that correct @damienperu ? If so, that's basically just a hole through the block, between the cylinders, into the oil passage on the left side of the engine.

I was thinking that there was a similar oil passage on the right side of the block, and that I would be tapping into that. Drilling all the way across the block, threading it between cylinders definitely sounds too difficult for a hand drill of any flavor.

Am I seeing that right? Or is it just a very deep boss to drill through on the right side to get to the oil passage?

I am still going to test it on my spare block I think, but if it means drilling between the cylinders I am probably better served to just suck it up with a Tee fitting from the oil pressure sender. As much as I don't like that idea.

Dan

 

[broth9640]

Judging by this photo, it doesn't appear to be that deep. I am really hoping this works because I can't stand the setup off the sender on mine.

 

[DamoPeru]

OK, I'm rethinking....

The hole to be drilled on the right side of the block is 150mm deep, is that correct @damienperu ? If so, that's basically just a hole through the block, between the cylinders, into the oil passage on the left side of the engine.

I was thinking that there was a similar oil passage on the right side of the block, and that I would be tapping into that. Drilling all the way across the block, threading it between cylinders definitely sounds too difficult for a hand drill of any flavor.

Am I seeing that right? Or is it just a very deep boss to drill through on the right side to get to the oil passage?

I am still going to test it on my spare block I think, but if it means drilling between the cylinders I am probably better served to just suck it up with a Tee fitting from the oil pressure sender. As much as I don't like that idea.

Dan

Yep, through the block between cylinders to the oil reservoir on the other side, as I mentioned I had it done at a machinist before rebuilding

 

[broth9640]

ok, so the smaller inner hole goes all the way across. Yeah I won't be doing that while the motor is in the vehicle.

 

[DamoPeru]

Yes that's what I did, small hole gors straight through. I haven't seen what the hole diameter behind the banjo bolt is on a 1HD, but my logic was to keep it as small as possible to avoid the cylinders and to not affect the oil pressure.

 

[DamoPeru]

I'm now in a similar position to @DanS HJ-45 and am debating where to get access for not only a digital oil pressure sensor, but also to add an intake for a 2 micron by-pass filter...

currently all I can come up with is an octopus from the OEM oil pressure sensor location using one of these, which supposedly has one male 1/8 BSPT, one female 1/8 BSPT for OEM sensor, and two 1/8 NPT for my new sensor and filter line, though i can't see where the second is:

1/8 BSPT GT86 Oil Sensor Thread Adapter

while it certainly looks solid enough to mount at least both sensors, I have two doubts: whether the pressure readings will be affected by the flow through to the by-pass filter; and whether it is wise to add the extra weight of the intake line, although i will definitely make up some sort of bracket from the two threaded bosses below the oil filter.

 

[Tapage]

Oil press it's oil press .. mounting extra sensors there would not be a problem, bypass filter, another story can't tell there and from a T in the oil press port I take the oil feed for my turbo ( 2H ).

 

[mudgudgeon]

I'm now in a similar position to @DanS HJ-45 and am debating where to get access for not only a digital oil pressure sensor, but also to add an intake for a 2 micron by-pass filter...

currently all I can come up with is an octopus from the OEM oil pressure sensor location using one of these, which supposedly has one male 1/8 BSPT, one female 1/8 BSPT for OEM sensor, and two 1/8 NPT for my new sensor and filter line, though i can't see where the second is:

1/8 BSPT GT86 Oil Sensor Thread Adapter
View attachment 1474674

while it certainly looks solid enough to mount at least both sensors, I have two doubts: whether the pressure readings will be affected by the flow through to the by-pass filter; and whether it is wise to add the extra weight of the intake line, although i will definitely make up some sort of bracket from the two threaded bosses below the oil filter.

I think you may have issues with clearance to the starter motor with the length of that.
I'd also be reluctant to use brass. I've read several reports of brass fittings breaking off here.
I recently fitted a turbo on my 1HZ, I used steel pipe fittings, 1/8NPT nipples and T to relocate the pressure sensor, and tap of on oil feed for the turbo.
It was tight for space.
Pictures here

Rolling the dice - slow moving turbo HZJ105 project

For additional filtration, I'd try and source an adapter plate to screw on under the factory oil filter that had provision for a new feed and return line.
There's after market products that do this. (Not sure if available for 1HZ)

 

[DamoPeru]

Well, after only a few more hours on the computer and I appear to have found my answer to avoiding the octopus... I tracked down a 1HZ oil filter sandwich adapter... has three big npt ports and seems like an awesome solution. I'm going to leave the factory oil pressure sensor location alone, which is a lot harder to access anyways. i would post a link, but i bought the only remaining one from ebay australia and it no longer appears.

 

[DamoPeru]

For additional filtration, I'd try and source an adapter plate to screw on under the factory oil filter that had provision for a new feed and return line.
There's after market products that do this. (Not sure if available for 1HZ)

seems i posted just as you did.... yeah i didn't see much for hte 1HZ, but as soon as i did i went for it