Removing of coolant channels for aircon heater

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owtaman

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