Rear Heater Delete/Coolant Line Cleanup

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Wow crazy, I didn’t know the thriller body was part of the cooling system

They just run coolant through the throttle body to prevent the throttle butterfly from freezing open during cold/damp weather while using cruise control.
 
That's pretty smart, to be honest. :)

I would love to meet the people that designed the 80.

I agree, someone was thinking of all these little things that add up to improve the vehicle. It doesn't appear any of them were done to make it cheaper to produce, rather they were all done to improve functionality.
 
I agree, someone was thinking of all these little things that add up to improve the vehicle. It doesn't appear any of them were done to make it cheaper to produce, rather they were all done to improve functionality.
I don't think they had a budget that they wanted the truck to "come in" at. I think they just made it as good as they could make it and when things popped up, they were on it. I am imagining someone complained about a sticky butterfly on one of the earlier motors or while they were beta testing the 1FZ-FE and they all probably nodded quietly(in my my mind's eye this happens, maybe not IRL :)) and went back to the blueprints and decided to run the cooling system through the throttle body, just in case that ever came up again.

I am sure that didn't make the aluminum casting any cheaper.

It was sort of their crowning moment and vehicle along with the Supra as they overtook GM as the world's biggest and best auto manufacturer. I am sure they had their top people on both of them.
 
I don’t think it was revolutionary innovation. A lot of vehicles have coolant through the TBs.

My 1990 Nissan 300ZX Twin Turbo has coolant through the TBs. I believe a lot of imported vehicles started doing it in the ‘90s as cruise control became more common.

Not saying the 80 series isn’t badass though.
 
My Camaro had the same thing. A bunch of engines do it.
 
Just because I am not some sort of super genius that knows how all the cool engineers make their throttle bodies, that shouldn't preclude me from the light bulb moment I just had and the vision I have of the engineers that were responsible for the 80. A man can dream!

I haven't had any Camaros or any twin turbo units, but it still seems pretty smaht. :hillbilly:

EDIT: Those were kinda GM and Nissan's best cars too. Where did they get the idea from?
 
@Red Merle - I agree with you, the 80 series is the best. The offroad capability and refinement kept advancing with every series. It culminated in the 80 series. It has a solid front axle like the 40 and 60, but coil suspension instead of leaf-spring. Plus the optional lockers front and rear (which is basically unheard of for an OEM vehicle). It’s interior is roomy, nice, and luxurious. Although not as nice as the 100 series.

But the 100 series began sacrificing offroad prowess for comfort and road manners. Yes, the 80 could use the 100 series V8, but power is its only real shortcoming.

IMHO it is the perfect balance of being an insanely capable offroad vehicle, while also being comfortable on-road.
 
@Red Merle - I agree with you, the 80 series is the best. The offroad capability and refinement kept advancing with every series. It culminated in the 80 series. It has a solid front axle like the 40 and 60, but coil suspension instead of leaf-spring. Plus the optional lockers front and rear (which is basically unheard of for an OEM vehicle). It’s interior is roomy, nice, and luxurious. Although not as nice as the 100 series.

But the 100 series began sacrificing offroad prowess for comfort and road manners. Yes, the 80 could use the 100 series V8, but power is its only real shortcoming.

IMHO it is the perfect balance of being an insanely capable offroad vehicle, while also being comfortable on-road.
Having pretty much taken an 80 apart and put it all back together again, I think you're right. Even just the fact that I could get the rusty fastners off was an upgrade over many, many other cars I have had. It's all just bolts. Most other cars have a lot more spot welding, etc, that you have to dink with.

I don't really push the limits of it's offroad capability, but I do deal with a metric f-ton of winter and this is by far the best inclement weather vehicle I have ever owned. I also do a lot of remote area rugged gravel road driving and rock solid reliability is very important. Leaving a truck for a few days or weeks is pretty normal and the last thing you want when you get off the trail is to deal with a dead truck. Been there, done that, too many times.

In my opinion, other than the mpg, the 80 is the best vehicle that Toyota ever made and I would put it up there with some of the other top cars ever. Look how many of us own really nice 80s that aren't even close to being worn out. I don't think I will outlive mine now as long as people can still drive gas powered cars.
 
Design? Like aesthetic design?

Interior of the 100 is just better, hands down. The 1fz also picked up some changes like coil packs and a redesigned head. The steering was upgraded... several changes make it the evolution of the 80. Its just a better design.
 
It helps to prevent icing in the throttle body. It has absolutely nothing to do with cruise control.

Why is preventing icing in the throttle body important? I always thought it was to prevent the throttle butterfly from freezing in the open position. Cruise control would keep the butterfly stationary long enough for it to freeze open if you were on a long, flat, cold, damp road.

My mistake.
 
Last edited:
Interior of the 100 is just better, hands down. The 1fz also picked up some changes like coil packs and a redesigned head. The steering was upgraded... several changes make it the evolution of the 80. Its just a better design.
I guess I was thinking about models they sold in the US. The 105 is a damn nice rig too!
 
I think the 105 is a better design than the 80 but I cant get one yet. 2024 is my year

Realizing that this topic got derailed, figured I'd just continue with the theme!

So, 1999 the first year of the 105? I wonder what kind of $$$ it'd be to import them, although, I need a LHD rig. Which might be very difficult to find.
 
I think the 105 is a better design than the 80 but I cant get one yet. 2024 is my year

There is a legal 105 diesel in Texas
Realizing that this topic got derailed, figured I'd just continue with the theme!

So, 1999 the first year of the 105? I wonder what kind of $$$ it'd be to import them, although, I need a LHD rig. Which might be very difficult to find.

Nope just money

There is a guy here on mud with a 100% legal 105 diesel in Texas
 

Users who are viewing this thread

Back
Top Bottom