heater - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Disturbe240 · 04-14-2007, 09:05 AM

ok this is a stupid question put i have to hask, will bypassing the heater core with a hose conecting the inlet end outlet break something:ghey: i dont whent to break anything.

is there someone runing like this her?.

thx

khilgers · 04-14-2007, 09:16 AM

nope go for it, but explain why you want to bypass your heater core.

Quote:

Originally Posted by Disturbe240

is there someone runing like this her?.

there are lots of people runing that set up her????????

Disturbe240 · 04-14-2007, 10:27 AM

well i dont realie need the heater core my car only runs in ther sumer, and i was in the medle of the swap wen i nodiced the the hose from the sr and ka wear not the same so i just sayd f*** it. now time to mount my custom intercooler

g6civcx · 04-14-2007, 10:43 AM

If you want to bypass the heater, you have several options:

1) On the SR, take a flexible 3/4" ID heater hose and connect the two fittings on the back of the engine near the firewall together. On the KA, do the same with a 5/8" ID hose.

2) Slice off the fittings as close to the engine as you can and weld the openings shut.

There are some critics that say #2 is not as good as #1 because it doesn't allow coolant to circulate to the head as well, but pull up a diagram of the cooling system and decide for yourself.

Pros of bypassing heater core:

a) Easier to bleed cooling system.
b) More reliability because extra connections + heater core = prone to leak, blockage, etc.

Cons of bypassing heater core:

i) ability to heat (freeze to death) and defrost (can't see shi*)
ii) heater core acts like an additional radiator if your car overheats. just turn the heater on high and blast the fan

My recommendation is for (i) and (ii) alone, you should keep the heater core, but ultimately it's your choice.

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04-14-2007, 09:05 AM	#1
Disturbe240 Join Date: Jan 2007 Location: riki Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	heater ok this is a stupid question put i have to hask, will bypassing the heater core with a hose conecting the inlet end outlet break something:ghey: i dont whent to break anything. is there someone runing like this her?. thx

04-14-2007, 10:27 AM	#3
Disturbe240 Join Date: Jan 2007 Location: riki Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	well i dont realie need the heater core my car only runs in ther sumer, and i was in the medle of the swap wen i nodiced the the hose from the sr and ka wear not the same so i just sayd f*** it. now time to mount my custom intercooler

04-14-2007, 10:43 AM	#4
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	If you want to bypass the heater, you have several options: 1) On the SR, take a flexible 3/4" ID heater hose and connect the two fittings on the back of the engine near the firewall together. On the KA, do the same with a 5/8" ID hose. 2) Slice off the fittings as close to the engine as you can and weld the openings shut. There are some critics that say #2 is not as good as #1 because it doesn't allow coolant to circulate to the head as well, but pull up a diagram of the cooling system and decide for yourself. Pros of bypassing heater core: a) Easier to bleed cooling system. b) More reliability because extra connections + heater core = prone to leak, blockage, etc. Cons of bypassing heater core: i) ability to heat (freeze to death) and defrost (can't see shi*) ii) heater core acts like an additional radiator if your car overheats. just turn the heater on high and blast the fan My recommendation is for (i) and (ii) alone, you should keep the heater core, but ultimately it's your choice.