2jz Coolant hoses to heater/firewall

[CSquared]

Ok so I've gone single turbo on the setup and I'm not quite sure what hoses to use for the heater control valve and firewall nipples. From what I've read the oem routing would theoretically be head to HCV and lower coolant pipe to the firewall by the brake booster.

From my understanding to clean this up distance wise I can also run head to driver side firewall and lower coolant nipple to HCV.

Please feel free to chime in if I have been misinformed but does anyone have specific hoses they used for that same setup?

My local part stores are less than friendly about letting me take a look at their hoses to match anything up so I'd like to possibly order direct from Curt at toyota.

 

[te72]

If you have the HCV in your system, you will still have 3 hoses... Eliminate the HCV and you'll only have 2 if you run your heater. I'm not totally convinced the HCV really does anything all that important though, as the difference in mine with the valve and without feels the same, as far as the heater is concerned.

 

[Flateric]

Sounds to me like you have the hoses going to and from reversed.

Having no HCV does make it impossible to blow just plain cool air to the interior.

since hot coolant is always being circulated through the core. Thats the biggest downside to eliminating it I've found. But I live in canada, LOL.

 

[CSquared]

If you have the HCV in your system, you will still have 3 hoses... Eliminate the HCV and you'll only have 2 if you run your heater. I'm not totally convinced the HCV really does anything all that important though, as the difference in mine with the valve and without feels the same, as far as the heater is concerned.

At this point I guess I am leaning towards removing the HCV since I'm not running air conditioning anyway. That way it really doesn't matter which way I route the coolant anyway. What hoses did you use for you swap? I don't know if the coolant ports on the 1j and 2j are different. And did you run opposite from oem flow?

Sounds to me like you have the hoses going to and from reversed.

Having no HCV does make it impossible to blow just plain cool air to the interior.

since hot coolant is always being circulated through the core. Thats the biggest downside to eliminating it I've found. But I live in canada, LOL.

Yeah I know for a fact that it would be going in the opposite direction from factory flow but I just can't imagine that I'd find a correct hose for that purpose. I mean on the 2j the coolant port is under the exhaust manifold and would have to go 4 feet around the back of the motor to a firewall port facing in the entirely opposite direction.

 

[te72]

This is about the only picture I have showing my setup... It's not terribly far from the 7m design.

Maybe I'll put mine back in for fun then, if it'll allow me to blow some cool air in...

 

[OneJArpus]

I by passed my vavle, by running a hose from the coolant pipe to the heater core, It was regular straight hose, i got it long enough so i can put it on and where it started to Kink a little i put 3 hose clamps snug on the hose to prevent it from collapsing

 

[te72]

I by passed my vavle, by running a hose from the coolant pipe to the heater core, It was regular straight hose, i got it long enough so i can put it on and where it started to Kink a little i put 3 hose clamps snug on the hose to prevent it from collapsing

You know, that's not at all a bad idea, I have mine setup in a similar way, but the hose is long enough that it's in no danger of kinking as is. Still a cool idea, Checker sells metal coil things to prevent hose collapse like this, but they're kinda pricey for all they are...

 

[CSquared]

yeah my worry with the hoses is that they do get kinked. That's why I was hoping to find something that might be similar enough routing as to keep everything looking clean too. I'm sure I'll figure out something but as much as I've searched I haven't found anyone who touched this topic between here and SF.

 

[OneJArpus]

yea i've seen those coil things but they are like 10/12 bux, a few worm clamps do the job, i still have heat if i need it and if i dont want to use heat just use the climate control unit to 75 to get ambient temps to come thru