Can someone please help me... Can't find it in the Haynes manual either.



The heater size hose from the lower radiator goes to what? or where?



I did a motor swap and can't figure out where this hose goes.



I have a heater connected to the hose at the back of the intake manifold and the other side near the oil filter.



THANX

In my Rex that hose goes straight to the bottom of the block. It goes like 1 foot straight to it. Mine is as 88' though.

Same here, mines an '88 and thats where it goes. It connects right to the bottom right side.....

Thanks guys for checking.



This is the smaller heater size hose?



I know the botton Radiator hose goes there. But there is a 1" or so diameter hose that taps into the bottom of the Radiator right where that bigger hose is. Not sure where it goes. It does carry water.



Mine also is a 1988 (I think)... It's in a Suzuki now.

Out of curiosity, you're not running an automatic tranny are you? Because I've seen where an auto tranny will have lines running to the radiator as well to help cool the tranny fluid. (Note, the tranny fluid does not mix with the coolant.) At some point, my RX-7 got a new radiator, but its for an auto and has the two little ports on it near the bottom.

I checked on my rex and there is a 1" diameter hose that goes from my AC&CV right to the side of my radiator. I looked behind my bumber and it goes behind the radiator and curves back down. I have NO CLUE :dontgetit: where it goes. I can't beleive i can't find where it goes. Maybe this is the same friggin hose ur talkin' about??

Nope it's a 5 speed. I did remove my ACV but there's no water inlets on that, just air. The heater hoses connect at the rear of the motor on both the oil filter side (just beneath it) and the back side of the lower intake manifold). The Haynes manual shows clearly an illistrated shot of the radiator and it says the smaller hose coming from the radiater is a heater hose. It is a heater size hose, but doesn't go to the heater.



I can't beleive I am stumped on this one.

I found your hose and I found where it goes.... and i think I know why you can't find where it goes...on the 7 in runs from the radiator straight back to the firewall, almost in the middle, off to the right a little bit.... but your suzuki prolly doesn't have that (anyone wanna bet me? I'll give them 20 to 1 odds https://www.nopistons.com/forums/pub...R ) I didn't trace it through the firewall, that would prolly be a little difficult and I just got off work so I'm a wee bit tired, I'll get back on tommorow and if you would like me to I can try to trace it and see where all it goes.... but anyways, if you still have the shell of the rx you took the engine out of then you should be able to see where it goes, just plugs right into the firewall...was searching through the manual and found it, then went and looked on my car to confirm (i have an 88 Turbo II)... if you look in the manual on page 107 at the illustration on the bottomright corner it shows where the heater hose hits the firewall.... good luck trying to figure out what to do with the hose....I'm really curious as to know what your rotary rocket powered suzuki is gonna do https://www.nopistons.com/forums/pub...#>/BURNOUT.gif



- Matt

yeah he's right i saw that hose too... https://www.nopistons.com/forums/pub...R#>/tongue.png

If that really is the heater hose.. I have another one at the rear of the lower intake manifold? Maybe it's air... but it's the same exact size as the heater hose.



It looks like a heater hose and it at the rear of the motor, probably tough to get to on a normal RX7 or even see.



My Rx-7 donner is long gone... So I can't look.



Well I would have been been happy with a R100, but I couldn't find one. I want something that seats 4 is fun to drive and hauls... I prefer NOT to have a V8 powered (Insert any muscle car here) vehicle.

I do believe that the hose runs into the firewall and bac out into the engine...not sure though.... if you look at the illustration in the manual it shows that, somewhat.... but I don't know why it runs into the firewall -=/ so I'ma have to try and find out...



-Matt

ok, I got your answer....the hos runs from the radiator, into the firewall, through the heater core, out the firewall, and into the side of the block below the oil pressure sensor(which is below the oil filter).... good luck with your project



- Matt

Rxtasy is exactly right I had to replace that hose in my rx once.. And ponder that Q at one time. :smile:

Okay if that is the hose to the heater core... I believe you, but where does the hose go from the back side of the intake manifold. It looks like it goes to the heater.



http://www.daczone.com/hose.jpg

I've never looked at an N/A rotary engine, so I can't figure out what I'm looking at, can you get a bigger picture? the intake manifold on a turbo II and an N/A are way different I believe.... I think they'll have the same basic setup though...i dunno

:shocked: I have an N/A i can't tell where the F*** that pciture is taken from. Add another picture that is showing more of the engine. That will help a lot.

Okay I will do another picture. You can just barely see the intake hole for the rear rotor. The upper manifold has been removed. But I will do a bigger picture.



Thanks for your guys help.

Okay here is I hope a better shot. (Alot of wires from my Haltech are in the way of a good shot..)



http://www.daczone.com/hose5.jpg



If that one isn't good enough try these:



Pic1

Pic2

Pic3

Pic4



THANKS GUYS!

hmmmm, well I was right on my guess from the first pic, but on my 88 TII I don't have that hose -=/ guess the intakes are alot different sorry....but my father, mr know-a-lot said that it could to many places (not much help i know) but he said that it could very well run the the heater.... is there a place for the hose to go on the heater? and if so can you see a place for it to come out and be circulated through? I wouldn't suggest hooking it up and trying it, just in case it is air... but try to see if it circulates through and where it circulates to...

got a few other questions....does it pump out coolant? and is that the original hose that came on there or did you replace it?

I dunno what it has in it. (I haven't filled the radiator yet)... I will this weekend. I thought it was for the heater (I put the hose on it). It did have a shorter hose on it.



But I have been corrected and have found the 2 hoses that go to the heater. (One locationed beneath the oil filter on the right side of the motor) the 2nd is actually on the lower radiator hose.



So this one is a mystery. I guess I will have to go visit a wrecking yard and see.



Thanks all for your help.

I Found out where it goes for sure this time. Its a vacuum hose. It goes to the Vacuum Assisted Brake thingy. I can't remember its name but its in the left rear of the engine bay. ( If U r sitting in the car) Its right behind the Clutch Master Cylinder. It lookes like a big black brake drum. The Hose goes into the outlet that is farthest from the engine. The Brake thingy is vacuum assisted so, its gets its vacuum power from the intake. :wink:

EXCELLENT!!! THANK YOU SO MUCH!!



I appreciate it.

hehe, 10 years and 500 replies later we got it figured out :laugh: keep us posted on your project...