bypass car heaters on 1uzfe

[fruitysupra]

Quick question for you all, im pretty sure i know the answer is "yes its fine" but thought i would check. on my drag supra i have decided to remove the car heating system within the car. can i simply just remove the send and return hoses from the engine to bulk head, and connect them together? bypassing all the heating matrix etc within the cabin.

Ta

 

[George_R]

In LS400, when the heater is off, the line is effectively blocked. I think however that connecting the feed and return lines would make the cooling a tad better.

 

[gloverman]

I have run quite a few without heater , jetboats is one example. When the heater is flowing it is effectively a radiator which reduces the temp of the inlet coolant so it returned coolant at a lower temperature back to the water pump. If the lines are joined without the matrix in the circuit you then have a circuit which provides no cooling effect allowing hot water to circulate within the engine. I feel it's much better to have all this coolant passing through the radiator. For this reason I always block the two lines off. I have had quite a few engines come in with cooling issues and no heater , These engines have had the lines connected , In most cases blocking the lines sorts the issue.

 

[fruitysupra]

so wasnt an as simple answer as i first thought! thanks ever so much for your comments and i will go down the route of blocking them.
thanks again.

 

[fruitysupra]

Bringing this back up as I'm looking to find out the inner diameter of the two coolant hoses attaching to the bulk head so I can purchase some blanks.