Bypassing the Heater Core

FtoSam · Post by **FtoSam** » Sat Mar 15, 2008 10:31 am

Hey guysâ€¦

Iâ€™ve had the internal heater core leaking for about a year nowâ€¦ but it only ever lets out a mist that fogs the windscreenâ€¦ and only once every few monthsâ€¦

Well with the extra pressure the engine is under, I guess it finally let goâ€¦ and had a pool of coolant on my FTO floor a few days agoâ€¦

My old cars heater core clogged up and we just bypassed it from the firewallâ€¦ Looking to do the same with thisâ€¦ I donâ€™t need a heater, because the amount of heat coming through the firewall is amazing.. so is there any detrimental affects with bypassing the internal heater??

Post by **I8A4RE** » Sat Mar 15, 2008 1:33 pm

Post by **Bennoz** » Sat Mar 15, 2008 1:36 pm

The water pump speed is goverened by the engine rpm. If you've rebuilt the motor to go to 10,000rpm then yes, you might run into difficulties, but Im thinking thats not the case.

The only issue you face is that when bypassing the heater matrix, you send the heated coolant that was to be cooled after passing thru the heater matrix back into the system. Answer is bigger radiator if you havent already got one...

Post by **I8A4RE** » Sat Mar 15, 2008 1:44 pm

But wouldnt the heated coolant only be cooled down when the heater was on. When the heater was off it is just like going through a pipe. Heat dissapation would be absolutly minimal.

Post by **Bennoz** » Sat Mar 15, 2008 2:00 pm

I8AFRE wrote:But wouldnt the heated coolant only be cooled down when the heater was on. When the heater was off it is just like going through a pipe. Heat dissapation would be absolutly minimal.

It still goes all the way thru the matrix, only difference is that the fan isnt blowing around it.

FtoSam · Post by **FtoSam** » Sat Mar 15, 2008 7:47 pm

i have never had the ac or heater on... and ive got a standard radiator...

for now it is holding up perfectly... no overheating yet...

Dr_Jones · Post by **Dr_Jones** » Sat Mar 15, 2008 9:36 pm

I had mine bypassed for months no worries. Using various supplies from bunnings too

FtoSam · Post by **FtoSam** » Sun Mar 16, 2008 11:17 pm

Righto...

heater is going well, but on a mountain run, the radiator hose sprung a hole the size of a pin...

still managed to leak out till we fixed er up...

she'll be right for a few months right??

maggsy · Post by **maggsy** » Sun Mar 16, 2008 11:29 pm

oh for sure.

duck tape is good, it should last the lifetime of the car. *cough*

Post by **I8A4RE** » Mon Mar 17, 2008 4:59 pm

maggsy wrote:oh for sure.

duck tape is good, it should last the lifetime of the car. *cough*

Yeah 3 days