FJ80 with 1HD turbo diesel conversion

[gnx7]

Very cool thread. You should also look at http://www.westach.com for guages also. They make aircraft/agricultural guages and the Buick Grand National (3.8i intercooled/turbo) guys have been using their 30/30 boost/vac and EGT guages since the early 90's. I used these guages they offer with no problems in my Buick GN/RX-7 conversions for many years.

That cast piece connecting the compressor discharge outlet to the intake manifold looks super restrictive. I'm sure if you had the hood clearance you could fab up something to free more power.

What are these engines rated at in hp and torque stock? What about mpg?

I'm looking at getting an FZ-80 and selling my FJ-60. Need the towing capability, comfort, better economy, less rust prone, and power the FZ-80 offers (16mpg vs 12mpg with the 2F).

THis is a very cool conversion. Can't wait to hear the results when it runs again.

 

[dieselcruiserhead]

very cool. I will be acruiring a 1HD-T at some point and am wonding what to do with it

 

[Mickldo]

Mickldo-

Thanks for the pyro numbers. That is good info I can use. Where did you place the pyro pick up?

The pyro pickup is placed about 1" from the turbo flange in the dump pipe.
My old foreman at work has a HDJ80 that is a very simillar build to mine. When I fitted the turbo to mine it made more power than his so he went and got a 3" exhaust with hi flow dump pipe as well so that we made the same power. He has since removed the muffler to make a straight thru system. We still make about the same power but his definitely sounds heaps better. Gotta love sooties that whistle.He doesn't have a pyro to compare EGTs with and without mufflers but I have heard that the temps are less without a muffler. I don't think his is much louder than mine just sounds throatier and whistles more.
Let me know if I can help with any turbo diesel information as I not only own one but also work on new HDJ79 cruisers every day.

 

[curious1]

GNX7- 1HD horsepower is 165 @3600 rpm and 268 torque @ 2000

Mickldo- Do you have picture of where your pyro pick up is?

 

[Tapage]

Curius .. put your pyro sender unit as close as posible at your exaust manifold .. the magic number are 1250 ºF you can handle the engine over this temp for a short period .. keep in mind at 1250 you got a melted piston.

 

[pr0ject42]

When you guys put your pyrometer into your manifold/headers, how are you getting it so close to the piston itself? Are you only taking measurements from one piston? Is this reliable?

I'm about to do a dual EGT setup and I was looking at putting the pyrometer down at the collecter of my header (on each side, a V6) but is that too far away from the block? It is a 5VZFE with Downey headers..

 

[clownmidget]

Most EGT/Pyrometer gauge manufacturers clearly identify in the install instructions where you should place the sensor bung. Also, this is not necessarily consistently the same spot depending on if the motor is naturally aspirated petrol, diesel, or either one s/c'd, turbo'd.

 

[SamB]

Mickldo, do you think having the pyro sensor post turbo (as opposed to pre turbo) has much impact on readings?

You need an intercooler to!

P.S Keen to se a pic as well!

 

[Tapage]

When you guys put your pyrometer into your manifold/headers, how are you getting it so close to the piston itself? Are you only taking measurements from one piston? Is this reliable?

I'm about to do a dual EGT setup and I was looking at putting the pyrometer down at the collecter of my header (on each side, a V6) but is that too far away from the block? It is a 5VZFE with Downey headers..

good point .. but I thought in a V engine you don't need to use 2 Pyros .. coz if your engine run fine and is in good shape, you are get the same measurement in both sides ( both exaust manifolds )

What you want with Pyro is get more accuracy reading of your EGTs .. and don't need to read both exaust manifolds and not in all cilinders ..

 

[pr0ject42]

Well my point would be to catch something going wrong before I melt something, and something could go wrong on only one side of the engine.

I would think monitoring both sides would also help in possible troubleshooting scenarios.

I guess I'm just scared to drill that hole for the pyrometer into my headers. I'm sure anyone can identify with that..

 

[Mickldo]

I saw on one of the HDJ79 cruisers at work that the turbo dump pipe on the 1HD-FTE is cast whereas my dump pipe is a custom shaped tubular sheetmetal dump pipe.
I've used up all of my pic allowances so today I got a money order to get my silver star so hopefully lots of pics will coming your way soon. My pyro pick up is located about 1" downstream from the turbo output flange in the dump pipe. Hopefully this description will tide you over till I can get some pics up.
Not sure about pre-turbo pyro locations as I have no first hand experience with this setup although I remember reading a thread on this subject on outerlimits4x4.com.
And yes.... I do need an intercooler......... and LPG injection..........and lose my muffler.

 

[JPHockerAZ]

Any progress on this?

 

[Previa Diesel]

very cool. I will be acruiring a 1HD-T at some point and am wonding what to do with it

Well, the first thing is replace the bearings, and the second is try to find a J-spec oil to run it on!

12HT might be a better idea. Newer isn't always better.

 

[woody]

bump for an update....may be replacing the motor in my 1996 80-series and this is EXACTLY what I want to do!!

 

[Tapage]

bump for an update....may be replacing the motor in my 1996 80-series and this is EXACTLY what I want to do!!

Damn Dude .. welcome to the Diesel World !