74ventura

I have an F-body water pump on my lq9. Can I just cap off the line on the water pump for the heater core untill I install the heater core, or do I have to run a loop of hose to bypass 1 side to the other?

Thanks

MrPotatoeHead

iTrader: (1)

It's 50/50 from what I've read, half say the motor was designed to have that coolant flow, the others just say cap them. I'd personally do the hose that let's the coolant circulate.

LS1MCSS

iTrader: (18)

You can loop it if you want to but it's not required. It will cool fine with them capped.

74ventura

Thanks! Capped it is until I get a heater in it.

Nitroinsane

Caps do not hold! Mine war threw extremely fast. By the 8 dollar bypass hose. Dayco makes it

phasemaster1

iTrader: (11)

Any chanceyou have that part number? Its true the caps dont last mine are beginning to crack.

badazz81z28

iTrader: (6)

GATES 18777

Dayco 87629

I currently have the Caps. I have read al ot of post by people saying these loop hosed interfere with the control arm.

Sleeperls

Thanks for the part numbers. Bookmarked.

badazz81z28

iTrader: (6)

I would like to know why people say the caps don't work. Looking at the pump...being blocked off or having a bypass hose doesnt change the situation either way. Water has no where to go and the pressure is still present.

Someone please chime in.

Nissan LS240

iTrader: (1)

Mine are capped, I used caps from toyota off a toyota cressida, on the back of the head on the I6 there;s a cap that worked great for me, 3 years and no leaks or signs of cracks,

badazz81z28

iTrader: (6)

I could see issues if people were using the quick spring clamps. I'm using worm gear clamps. They are not going anywhere....


The way the pump outlets are...The hose / caps don't appear to matter.

Can someone post pics of the pump internally?

LS1PUNK

iTrader: (5)

BINGO!

I had mine tapped then plugged.

99VetteFRC

^^^^^ I would tap and plug them and then when you are ready to hook up the heat just screw some brass hose barbs or -AN finttings in the holes.