Builds 73 FJ40 Refresh (9 Viewers)

[firemanj92]

I scored this really nice muffler heat shield. It's a little short for this muffler but every bit helps.

View attachment 3928645

You could easily extend that shield. Thin aluminium sheet metal would bend around that curve and pop rivet in place.

Also, Flowmaster sells heat shields in different sizes to fill the space. The kit includes everything needed to attach the shield while keeping an airspace btw the muffler and shield.

 

[73FJ40]

That looks like OEM, which is made of cad or zinc plated steel.

 

[73FJ40]

OEM shield and muffler.

Higher exhaust temp from retarded timing and air injection may have burned the paint on the rear bed in close proximity to the tail end of the muffler at the tail pipe.

Design is like an air scoop to improve cooling effect

 

[Living in the Past]

I bought one for my 68 FJ40 back in the 1990s when they were still available.
It will end up on my 73 FST at some point. But agree that they are not as long as the muffler. At that point I was running OEM exhaust for exhaust manifold back. Stock it ran under the skid plate. Mid wheeling dented the heater pipe at the firewall. Ran aftermarket welded exhaust after that. It took a real beating.

 

[Engineer8000]

This one has part of the original part tag on it so definitely OEM. I see from your pictures that it only covers the top end, not like shown in the parts diagram.

Thanks for the photos!

 

[Engineer8000]

I am trying to determine the correct front heater tubes for my 10/72. I see basically 3 types. Which is correct?

Based on the limited pictures, it looks like the stubby tubes are correct.

Stubby

medium sized

long

A couple pictures of early heaters I found. The first looks to be a 73 (cowl vent + radio).

 

[Living in the Past]

Stubby is correct for your 73.

There at two different shapes. The inlet hose from the cylinder head angles up in the engine compartment.

The picture of the 73 has bypass hose for the rear heater. If you need heat it is an awful way to do the bypass. Water will take the path of least resistance. Main heater will get less than half of the heat coolant going thru it.

 

[charliemeyer007]

I think my 72 is more Y shape, but yea short.

 

[Engineer8000]

Stubby is correct for your 73.

There at two different shapes. The inlet hose from the cylinder head angles up in the engine compartment.

The picture of the 73 has bypass hose for the rear heater. If you need heat it is an awful way to do the bypass. Water will take the path of least resistance. Main heater will get less than half of the heat coolant going thru it.

That is what I thought, also I figured the supply and return were different shapes. Thank you for your help.

 

[Engineer8000]

Started on this, reworking the 3FE interface a little. Also removed the heavy headlight wires and ran the r/g and r/y wires out to the headlight harness relays. Adding under hood relays for the fog lights and OBA compressor. I have to rework the brake warning light, the handle was on the floor with the 5 speed, moving it back up to the dash with the 4 speed. I moved the EFI relay into the cab, not sure why Toyota put it under the hood. All this unloaded the firewall grommets some. I have everything marked and bunched together, I will need to test fit to get final lengths of things.

 

[knuckle47]

It looks like an anatomical map of the vessels and nerves of a human body… it’s a good thing you have those mad engineering skills to sort it all out.

Makes me a little nervous if that was my bench

 

[Engineer8000]

These came today. These are the nylon washers for the wing windows, 90202-08028, NLA. Pretty good match. M8 x 20mm x 1mm from amazon. Too bad I had to buy 60 to get the 4 I needed.