Rear heater hose replacement

[LC4LIFE]

Has anyone used silicone hoses for the rear heater hoses located under the passenger side above the exhaust. I know they are a formed hose, but would rather switch to silicone when I replace them for PM.

Thanks.

 

[cpg]

I did, I just removed the metal lines and used a hose in hose for heat protection and routed above frame rail. My metal pipes were good just did not like the setup.
4 connections instead of 8 .

 

[LC4LIFE]

I have three feet of 5/8" silicone sitting at home. Is that the size? how long will I need to do it the way you did.

 

[cruiserdan]

The rear hoses are not 5/8. They are closer to 1/2 inch. The only way Toyota services them is with the metal pipes.

 

[LC4LIFE]

Yeah, I do not really want to do away with Toyota engineered metal pipes. I would rather go with a silicone replacement for the hoses that are currently there.

 

[tusk74]

Mine were getting pretty rusty and replacing them with stock pipes didn't look like a lot of fun. I cut them off near the transmission hump and replaced them with regular heater hose. I routed the hose along the top of the frame. One guy suggested using pvc pipe as a condit to avoid chaffing, but inspection of the hoses every spring was good enough for me. I used double clamps on each end.

 

[tusk74]

Forgot to mention that the pipe replacement was on a '97 fzj, not my '91 fj. For some reason my '91 looks like new underneath. That is one of reasons I sold the FZJ and kept the FJ.

 

[landtank]

replacing the rear hard lines isn't all that bad once the transmission is out of the way.

 

[stayalert]

replacing the rear hard lines isn't all that bad once the transmission is out of the way.

This is why I have a brand new set of hard lines hanging in my garage.....I bougfht them intending to replace them on my '94 w/165K miles....I cut out some sour pieces of the pipe and used heater hose to repair. Next time I remove the tranny I'll redo it......

 

[98 SNAKE EATER]

replacing the rear hard lines isn't all that bad once the transmission is out of the way.

LOL


If mine ever starts to leak, I'm just gunna do a ghettobypass



The kids can dress warmer

 

[JerseyCruiser]

replacing the rear hard lines isn't all that bad once the transmission is out of the way.

So with that said it is impossible to change the set of heater pipes above the transmission with it in place?

 

[Marc311]

Somebody seperated the two pipes and fished them down. But apparently it took some bending as well. I wonder if you could split the two apart and cut them again and add a section of heater hose to give it more flexibility to fish down there.

Mine look terrible, but there is no way I'm going to drop a transmission for a rear heater. At the same time, they will eventually fail. So my dilemma is to bypass now, risk it, or go with an alternative (silicone hoses, modified pipes, etc.)

Since LT has done this job already and got a good view of how they are routed, I wonder if he has any thoughts about alternatives.

 

[OGBeno]

Somebody seperated the two pipes and fished them down. But apparently it took some bending as well. I wonder if you could split the two apart and cut them again and add a section of heater hose to give it more flexibility to fish down there..

That was me. I split the two apart and fished them down individually. I also had the entire head out of the way as well. It was tough, but was able to route them correctly. Has held up now for two years no problems.

 

[sandcruiser]

can't imagine trying to put new pipes in w/ the motor and tranny there.
Just getting the old ones out was a serious PITA, I ended up just hacking them to bits.

 

[80t0ylc]

It just depends on how bad you want or need extra rear heat. Mine is bypassed, and we have winter where I live. I like the peace of mind not having another part of the cooling system to worry about on my FZJ.

 

[96r50]

It just depends on how bad you want or need extra rear heat. Mine is bypassed, and we have winter where I live. I like the peace of mind not having another part of the cooling system to worry about on my FZJ.

x2. The peace of mind is nice, and it wasn't something I ever used.

 

[95ToyCruiser]

It just depends on how bad you want or need extra rear heat. Mine is bypassed, and we have winter where I live. I like the peace of mind not having another part of the cooling system to worry about on my FZJ.

Where/how did you bypass your rear heater hoses?

 

[80t0ylc]

Where/how did you bypass your rear heater hoses?

If you do a search on "heater bypass" in title only, you can get a good idea of how most have done it. This link is one on the list, with pics and a good example.

 

[superjuice]

I don't see what the problem is with replacing them. After removing the heat shields they are right there! I replaced mine in about 2 hours, much easier than the PHH. Just wanted to say I did it and i'm not a magician, I didn't even remove the exhaust

 

[80t0ylc]

I don't see what the problem is with replacing them. After removing the heat shields they are right there! I replaced mine in about 2 hours, much easier than the PHH. Just wanted to say I did it and i'm not a magician, I didn't even remove the exhaust

The hard lines above torque converter/tranny housing are the difficult ones to reach, unless you have the head off or the engine/tranny pulled out already. But, I think that most that have bypassed the rear heater, have done it for the same reason I did. They don't use it and want to eliminate it from becoming a problem. With the cost of fuel today, most can't afford to use their 80 for a warming hut for winter sports. And for 1 or 2 people, the front heater is entirely adequate unless you're camping in the back in extremely cold weather.