ls1 water pump can i cap the heater outlets
12-07-2009, 06:49 PM
#1
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ls1 water pump can i cap the heater outlets need to know if i can cap the 2 heater core outlets on my water pump, or do they need joined together, if they need joined what did you use ? I dont have a lot of room because its in a miata, thanks mike
12-08-2009, 01:07 AM
#7
Not challenging your answer to loop the water pump heater outlet with a hose back to the water pump heater hose inlet because it does make sense.
But does the heater control valve reroute the coolant back to the water pump via the return hose or simply block passage of the coolant into the heater core?
If coolant is stopped at the heater control valve (when heater is off) and not recycled back to the water pump via the return hose then capping the outlet and inlet heater hose connections at the waterpump performs the same function as the heater control valve.
So there would be no advantage to run a hose from outlet to inlet at the waterpump vs just capping both outlets at the waterpump.
But does the heater control valve reroute the coolant back to the water pump via the return hose or simply block passage of the coolant into the heater core?
If coolant is stopped at the heater control valve (when heater is off) and not recycled back to the water pump via the return hose then capping the outlet and inlet heater hose connections at the waterpump performs the same function as the heater control valve.
So there would be no advantage to run a hose from outlet to inlet at the waterpump vs just capping both outlets at the waterpump.
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12-08-2009, 07:14 AM
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12-08-2009, 06:32 PM
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the reason iam asking is in one of the mags out this month they dynoed a 404ci motor and said to join them together because it helps proper flow, i have them caped now just wanted to make sure it would be ok, looks like it will thanks
12-08-2009, 06:51 PM
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I cant say i havent done it..... in fact mine are capped as we speek
but................ i got a magazine today with an ls stroker motor article in it and in the magazine it talks about capping the lines that you should loop them together because just capping them can cause problems
like i said mine are capped for now just until i get the heater core replaced
and i havent had any problems yet
but i did read that today so i figured i would tell
but................ i got a magazine today with an ls stroker motor article in it and in the magazine it talks about capping the lines that you should loop them together because just capping them can cause problems
like i said mine are capped for now just until i get the heater core replaced
and i havent had any problems yet
but i did read that today so i figured i would tell
05-02-2010, 08:34 PM
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Hey look i can use the search feature 
Anyway, i've been reading threads about this topic but havent come across what people are using to block the heater hose passage off at the water pump.
Any insight?
Anyway, i've been reading threads about this topic but havent come across what people are using to block the heater hose passage off at the water pump.
Any insight?
05-02-2010, 08:42 PM
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Yea, right after i posted that, i found a thread mentioning rubber caps with worm clamps.
Then i found another thread talking about overheating issues. Any problems with yours? You still using stock thermo or change anything else besides blocking the passages off?
Then i found another thread talking about overheating issues. Any problems with yours? You still using stock thermo or change anything else besides blocking the passages off?
