Builds AUS BJ73 + turbo + arduino (1 Viewer)

[350HJ75]

head came back this week, crack tested, pressure tested, new set of valves and one pre-cup replaced.

and a set of new head bolts

bought a 12 x 1.25 mm tap to clean out the thread holes

the only snag i hit during re-assembly was the the rear most push rod would not go down all the way... after doing my research on mud i opted to take off the push rod cover and found this

the lifter was only just out of the hole but far enough to put it on a slight angle and stop it going back down... small setback, I used permatex ultra grey to seal up the cover again rather than getting another cork gasket so will see how that goes.

work continues tomorrow so will have some completed photos hopefully.

 

[350HJ75]

It lives! finished getting it back together today (delayed from when i said in my last post) and running good so far.

the first turbo prep mod has been done too, you can see the heater hose that used to run from the firewall, above the exhaust manifold and to the water pump has been re routed to the other side of the engine so it is not in the way.

 

[350HJ75]

also an update has been done to the arduino setup with the following added

• GPS speed
• Pitch
• Roll
• SD card recording

The screen in the dash has been updated to show the extra values as below. the slots for ambient air temp, intake air temp and boost have been allocated but are just dummy values (i wish we were seeing real boost numbers!)

Went for a 20 min drive just to test out the SD card recording, the record intervals are set at 10 secs so i think this is making the data a bit patchy but the graphs below show the data recorded. the drive varied in road conditions but it was all flat with some highway sections at 80kph 100kph and 110kph as can be seen in the flatter sections of the speed line.

Very keen to be using this kind of data when the turbo has been installed! but i will change the recording interval to about 2 secs to give smother data and give it a similar run and compare how the charts come up.

 

[renago]

The display and arduino mini computer is very cool.
Can you tell us the total cost of getting Arduino,to work that way ?
Are you happy to share some building info on it ?

Thanks Renago

 

[350HJ75]

sure thing, below is a breakdown of the costs to get it where it is now.

Mega 2560 Arduino 17
3x Max 6675 chip 10.62
1 x K type thermocouple 22
3 x RTD temp sensor 51
Oil pressure sensor 18
ADXL345 level sensor 12
NEO-6M GPS module 21
Boost pressure sensor 18
3 x MAX 31865 RTD chip 52.38
8GB SD card 11
2 x deutch plugs 74
Enclosure 20
20 x 4 LCD display 10
Misc wiring etc 30

Total 367


what other build info would you like?

 

[350HJ75]

As i work week on week off jobs are getting done in batches at the moment during my week off.

one i tackled this week was relocating the power steering reservoir as it sits right above where the turbo would go as per below pic

Now relocated to the inner guard as high as possible to keep the reservoir above the pump inlet, it has been lowered about 20mm from its original location so i am hoping it is not an issue, but time will tell.

look at all the turbo room now!

another thing that happened was the roof came off, summer is here so i wanted to give it a try.

 

[350HJ75]

stage 1 of the manifold was completed today.

after christmas i will mock this up on the car and work out how to get an outlet to the turbo and get the turbo position finalized.

It is difficult to work on a car that needs to be driven as it is still my daily so i need to organise myself and batch the jobs so they can all be done in one day.

Likely i will go with a 90 degree bend up to the turbo but i am not sure about bonnet clearance yet.

Anyone have comment on how vertical the oil drain pipe on the turbo needs to be?? My plan is to install it so the drain is vertical straight down at the turbo end with a hose to a fitting in the sump but my bonnet clearance might restrict that... laying the turbo over may give me more room but will put the drain at an angle...

Cheers

 

[HomerOz]

G'Day Fella's,

350HJ75, you have been busy!

I have the same vehicle and I'm looking at fitting a turbo to it as well.

Here is another tread on the same conversion (that you may not be aware of), that I hope may be of assistance.
Best Turbo for 3B Diesel...

Also, I have read that the straight up position of the oil filter body (like on yours), may get in the way of the turbo, or may be to close and be exposed to excess heat from the turbo?
I note that the oil filter body on my B3 engine (11-1989 manufacture), leans forward at an almost horizontal angle, toward the Alternator. I'm not sure if this was a later adaption by Toyota, and may be the same oil filter mount, as on the 13BT (factory turbo) engine?

One potential fix for this, would be to install an oil filter/cooler adapter, and run hoses to a remote oil filter (via an oil cooler)?

Hope that helps

Merry Christmas
Homer

 

[350HJ75]

yes i am not sure about the oil filter yet... I do have a downward pointing filter housing in the shed as below

But it does not have the oil feed and return connections required for the vacuum pump on the back of the alternator. so i will need to get alternate ones organised if i go down this path, i think i will weld in two bungs next to each other into the sump when i do this job so i have an option for the vacuum pump return, oil feed for the vacuum pump can be shared with the turbo i guess.

Interesting to see what your looks like homer, and yes the remote oil filter is not a bad option either... can probably mount it in a way that the front driveshaft avoids the oil bath it gets every time i change the filter.

 

[LAMBCRUSHER]

sure thing, below is a breakdown of the costs to get it where it is now.

Mega 2560 Arduino 17
3x Max 6675 chip 10.62
1 x K type thermocouple 22
3 x RTD temp sensor 51
Oil pressure sensor 18
ADXL345 level sensor 12
NEO-6M GPS module 21
Boost pressure sensor 18
3 x MAX 31865 RTD chip 52.38
8GB SD card 11
2 x deutch plugs 74
Enclosure 20
20 x 4 LCD display 10
Misc wiring etc 30

Total 367 and 646 hours of beating the daylights out of a keyboard and another 193 hours of tucking wires into trim panels... and worth every second of it!


what other build info would you like?

FIFY...

 

[HomerOz]

G'Day Fella's,

Yes 350HJ75, my front drive shaft and diff will never rust away either (they get a engine oil bath, ever 5000kms).

I'm constantly surprised by how many slight variations, Toyota have of the same vehicle.
My BJ73 does'nt have a vacuum assisted/power clutch, and a totally different tappet cover and head.
The fuel filter, is also mounted on the RHS inner guard, just in front of the brake booster.

Merry Christmas to you all.
Homer

 

[350HJ75]

FIFY...

amen to that... it was not expensive but it does take time

 

[350HJ75]

got another day down on the cruiser but made a big leap in the turbo project.

Manifold is complete

used a die grinder to get the inside as smooth as possible

and in position in the engine bay

 

[350HJ75]

dump pipe is also complete, 2.5 inch dump with 1 inch waste gate pipe plumbed in

also used the die grinder to smooth it as much as possible

 

[350HJ75]

double post

 

[350HJ75]

and turbo positioned in the engine bay

front view, here you can see where i decided to install the turbo on about a 35 degree angle, which means i need to clock the cold side housing so it is horizontal and also the core so the oil drain points downwards.

but there is just enough room for the dump pipe to firewall and in general i happy with all the clearances, i have left enough room to add a heat shield between the clutch booster and turbo also.

 

[350HJ75]

that is all for now

next job is to clock the turbo and modify the waste gate bracket as i will lose the factory bolt holes on the cold side housing.

i have ordered tonight a mamba adjustable waste gate actuator which will find it way on there eventually.

 

[LAMBCRUSHER]

I'm gunna be buggin you about your code, once you get it dialed in!

 

[HomerOz]

G'Day Fella's,

Wow and looking good there 350HJ75!

Some of the woven exhaust wrap, may help with keeping the exhaust heat contained and under control?

Doh!
Homer

 

[350HJ75]

I'm gunna be buggin you about your code, once you get it dialed in!

you can have a copy of the code if you like, i did not write it a friend of mine did so i cant answer any questions but i can pass it on.

PM me if you want it

G'Day Fella's,

Wow and looking good there 350HJ75!

Some of the woven exhaust wrap, may help with keeping the exhaust heat contained and under control?

Doh!
Homer

yes, once the exhaust is complete i will likely wrap the first section.