91 replies to this topic

[LX2DR]

In Rob's defence i think the lines are as per original on this car.



Also the thermostat housing isnt tapped! so if its original thats how it has always been.

But, if you want to you could swap the thermo housing for tapped one , drill the hole in the pump and run the heater hoses down the RH side.

Mine isnt as original, but there is more than enough hoses and crap on the LH side of engine as is, i prefer it my way for tidyness.

"Your drip problem"

Just thinking is your AC working? are you using it?

Your AC is an under dash type i think? pic of LH under dash would help.

Is the condensate drain blocked on this unit? should have a drain hose on the bottom of it somewhere? to let the water out.

Edited by LX2DR, 03 May 2009 - 06:01 PM.

[76lxhatch]

The water inside the tubes isn;t getting that warm at all.

It won't heat then, you're getting warmer (pardon the pun)

[rodomo]

DON'T DRILL THE HOLE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Wait 5 mins and read my next post!!!!!!!

[rodomo]

The water is drawn out of cavity "A"
Travels through the inlet manifold, then the heater core and enters cavity "B"
(A+B are not connected to each other)



Then it flows through the hole on the front of the head, through an internal elbow that is not connected to any water jacket, and into the block.



Then, through another internal elbow in the block, also not connected to any water jacket.



And ends up being drawn into your water pump via A HOLE THAT IS ALREADY THERE!!!!

Edited by rodomo, 03 May 2009 - 09:04 PM.

[ToRunYa]

jol, u are banned from drills! plus ya homebrand one wouldnt do the job. replace the thermostat and go from there...

[rodomo]

These holes and cavities can block up over time, as can your heater core.

[rodomo]

Change the thermostat and see what happens, if anything, it is stuck open or not there at all.

[rodomo]

I imagine the method is the same for changing a thermo on any car?. Unbolt house, pull out junk one, give a clean up, drop in new one, bolt up.. TADA! I can't see any sign of a gasket..so not required yeah?
Yes, there is a gasket.
Anyone wanna guestimate the cost of a thermostat? I recon around $30 yeah?
More like $20 tops.

[Rockoz]

While you are at it Jol, take the housing off the front of the motor and check for blockages in the water ports.
It wont take much more while you are at it.
Because there seems to be a flow problem because the hoses arent getting hot, I still think you may have a blockage, and thata the only place you havent checked by the sounds of it.

[76lxhatch]

The drilling opens up the pump to a good flow of heated water which in turn heats the core.

I think therein lies the flaw in your logic though; you said you already have plenty of flow so this wouldn't have any effect on the temp. +1 for the thermostat

[Rockoz]

But he has said that the water in the radiator hose is hot, and that it isnt so hot in the heater hoses.
If the water isnt moving through the hoses, or moving only a little then this would be the case.
If there was no blockage in the system then all of the hoses would be at the same or very close to the same temperature.

Im voting for a blockage.

[VitcLJ]

Agree with above. its probably a blockage in the lower pipe.

If you want the quick easy fix then drill the pump shift the hose and plug the bottom pipe.

If its important that you keep the original setup you may have to go to the extreme of removing the head to clean out the crap (sometimes wires and the like wont shift it). Its your choice and it may just need the removal of the thermo housing. And the water pump to get to the blockage from both ends.

In all this You keep mentioning the thermostat. Its my understanding that the thermostat only affects the water flow to the radiator. The heater system is a seperate path that's why the bottom pipe goes to the suction side of the pump thats also why the heater (When new and no blockage) works long before the thermo opens.

If you water temp gets up high enough to feel it in the pipes them I would say the thermo is probably doing its job.

But hey its your call. I am a bushy at heart and take the easiest way out in these situations.

Dammed if I would go to the trouble of removing all the hardware to get the channel from the pump to the bottom pipe cleaned out let alone consider removing the head, But thats me you do what you think is best.

[rodomo]

Draw a pic of this and take it with you.

Attached Files

•  jols_flow_004.jpg   71.85K   6 downloads

[76lxhatch]

If you can see the metal tubes that the hoses connect to then you have the core, its all one piece.