Removing of coolant channels for aircon heater

[owtaman]

Hi Guys,
Just to check, how many of you have done this for your Skylines ?

Questions,

1. Is it really necessary to remove/seal the coolant channels for a car that is more than 5 years old ? What is the life span of those rubber hose ? Anyone experienced water leaks due to this before ?

2. How much does it improve the engine cooling efficiency ? 0% ? 5% ?

3. Does it affect the overall coolant pressure ? Would it pop something else in the end for example leaks between the top water hose and the radiator ?

4. Does it slows down the warm-up time for morning/cold start ?

5. Where to do it ? How much ?

 

[V-Spec]

I would like to think of it as removing the possibility of water leakage in your cabin. Lesser pipe = lesser points of failure.

That would be the only advantage since we do not use the heater function here in hot humid Malaysia.

 

[Johnny_9]

Common problem?

 

[Driftmeister]

Remove mine due to top mount turbo setup, too close to the hoses. Anyway the good thing is your a/c will be much cooler but the downside is you cannot control the temp anymore...freeeezing point even on rainy days.

 

[V-Spec]

Mine has got no probs with temp control. :hmmmm:

 

[Driftmeister]

Mine has got no probs with temp control. :hmmmm:

Mine had to be remove somehow since most of the hot area is too close and may cause a leak to the water hose. You running top mount turbo or still stock bottom?

 

[V-Spec]

Mine stock bottom mount. Open hood look damn stock. Anyway, small potato nuttin to show also.

 

[Driftmeister]

Only when doing top mount then the hose is advisable to removed. Anyway on a cool day, no need A/C just wind down window blast to hear the in-line 6 scream itself.

 

[owtaman]

Remove mine due to top mount turbo setup, too close to the hoses. Anyway the good thing is your a/c will be much cooler but the downside is you cannot control the temp anymore...freeeezing point even on rainy days.

I have done the heater hoses removal, it was a good decision because while doing this also discovered that some water piping are also not in good condition, good to have them removed/repair before it leaks coolant.

And you are right Driftmeister, the aircon now is freezing and I am not able to control the temperature properly, set the climate control from 24c to 32c does not seems to have any changes/effect.

Found the below URL but havent try it, do you think resetting/adjusting the aircon temp sensor would help ?

Air Con Diagnostics For R33 - Skylines Australia

 

[owtaman]

Remove mine due to top mount turbo setup, too close to the hoses. Anyway the good thing is your a/c will be much cooler but the downside is you cannot control the temp anymore...freeeezing point even on rainy days.

Which generation Skyline are you referring ? I mean since Eu Jin's ER34 does not have the freezing problem.

OK here is the good news, my aircon is no longer freezing after I did the aircon diagnostic / calibration ! It works for my ECR33 ! I was not fully understood the instruction so at first trial I did -3 on the calibration, then I notice there is no changes on the air temperature, even the vent control is always blowing straight(towards passenger's body) even setting the climate control at 32c, so the next day I changed it to +3, now even on 25c in Auto mode it would switch the vent control to split vent towards both body and feet, good !

But +3 is the max it can go, I tried set it to +2, it is still too cold to drive at night.

During the diagnostics it shows error code 25, as below indication, maybe the sensor's wiring is disconnected when removing the hoses. I will have it checked the next time I visit Ah Seng your everyday Proton specialist next door.

25 - Sunload sensor (small sensor on the left hand side of the dashboard near the windscreen)