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Re: what do you use to block off heater hose fitting on w.p [Re: 602heavy] #933948
02/22/11 08:57 AM
02/22/11 08:57 AM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
Too Many Posts
70Cuda383  Offline
Too Many Posts

Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
Quote:

Might be missing something here cos i can't remember .................blocking those heater hose outlets won't allow any water to flow through block & heads until thermostat opens , this is the reason for the 'loop' , fine to plug em off if you don't run a thermostat (or drill stat)........block temps will be a lot higher than temps @ water pump neck , with no water flowing through block & heads heads 'hot spots' will cause block scaling & worse still can crack when thermostat opens.




I don't know if that's true or not, but where does the water flow? it's not going through the radiator, so even then, when the thermostat opens, you'll still get a rush of cold water from the radiator flowing into the block and heads.


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Re: what do you use to block off heater hose fitting on w.p [Re: mcmopars] #933949
02/22/11 08:59 AM
02/22/11 08:59 AM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
for those integral nipples the black neoprene caps from the "help" section at your parts house & a hose clamp is the only option & last a long time. A bit of gasket cement & recheck tightness once in a great while & you're good


live every 24 hour block of time like it's your last day on earth
Re: what do you use to block off heater hose fitting on w.p [Re: 70Cuda383] #933950
02/22/11 11:02 AM
02/22/11 11:02 AM
Joined: Dec 2008
Posts: 1,200
UK
6
602heavy Offline
pro stock
602heavy  Offline
pro stock
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Joined: Dec 2008
Posts: 1,200
UK
Quote:

, you'll still get a rush of cold water from the radiator flowing into the block and heads.




Correct , water won't flow until stat opens when plugging outlets , block temps can reach well over 250 degrees , fitting the 'loop' insures water gets circulated round block & heads when stat is closed , this is the reason for some of these cracked blocks.

Re: what do you use to block off heater hose fitting on w.p [Re: AndyF] #933951
02/22/11 11:14 AM
02/22/11 11:14 AM
Joined: Aug 2007
Posts: 6,098
Valencia, España
NachoRT74 Offline
master
NachoRT74  Offline
master

Joined: Aug 2007
Posts: 6,098
Valencia, España
Quote:

On a small block the nipple doesn't always come out. Most small block water pumps have a cast nipple.




interesting... didn't know that!

then:



some end caps like this have an internal... mmm dunno how it call it... stud maybe ? tit ? made on same rubber what fits inside the pipe. Renaults use to use these


With a Charger born in Chrysler assembly plant in Valencia, Venezuela
Re: what do you use to block off heater hose fitting on w.p [Re: NachoRT74] #933952
02/22/11 11:50 AM
02/22/11 11:50 AM
Joined: May 2003
Posts: 15,487
Florida
S
scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
I Live Here
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Joined: May 2003
Posts: 15,487
Florida
on a sb you can block the intake nipple and wp outlet nipple for the heater core with no ill effects

the bigger by-pass hose from wp to intake flows water while the t-stat is closed,so no cold water hitting hot spots,it warms up evenly

it also helps keep the wp from cavitating while the stat is closed

some do block it,and running with no stat,it would be fine to block both


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