![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Apr 2014
Location: Raleigh, NC
Posts: 51
|
Block manifold and water pump after heater delete?
Been looking through tons of threads and getting different opinions and trying to fill in the blanks. Can I just plug the manifold and the water pump where each of the heater hoses used to be respectively? Or do I need to keep them connected with a short hose?
Second, I pulled the hose off the manifold and it started spewing coolant. Can I quickly plug that hole, or should I drain the radiator? Will the same happen when I pull the hose for the water pump? Thanks. |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,221
|
Re: Block manifold and water pump after heater delete?
You can plug them with pipe plugs. Its better & much less messy to drain the coolant down. You can use a sealer on the threads like RTV or Teflon tape.
|
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
|
Re: Block manifold and water pump after heater delete?
If you have vortec heads or aftermarket heads you need to run a bypass. I would probably just run a short bypass hose anyway, it will help the water flow through the heads.
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: May 2011
Location: mich
Posts: 655
|
Re: Block manifold and water pump after heater delete?
on a SBC gen 1 you can just plug the manifold and wtr pump the water pump has a bypass already installed in a factory piece. if you look on the bottom of the pump left hand side standing in front you will see the port where the two bolts go in .
https://www.bing.com/images/search?v...lectedIndex=66 See that extra hole on the mounting surface that's the bypass |
![]() |
![]() |
![]() |
#5 | |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
|
Re: Block manifold and water pump after heater delete?
Quote:
Similarly the bypass for a small block is internal to the water pump, so it's not needed for that either. So what changed with Vortec heads (or other aftermarket heads) that makes them dependent on the heater circuit?
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
|
Re: Block manifold and water pump after heater delete?
There is no water pump bypass on a vortec motor or motor with vortec heads or a lot of after market heads either. There is a place on the block for the bypass but it doesn't go any where , it dead ends.
Even with the water pump bypass it is still a good idea to run a bypass hose to help water flow through the heads. |
![]() |
![]() |
![]() |
#7 | |
Registered User
Join Date: Jun 2016
Location: Vancouver B.C.
Posts: 206
|
Re: Block manifold and water pump after heater delete?
Quote:
Thinking about upgrading to vortecs in the future so this is good to know... |
|
![]() |
![]() |
![]() |
#8 | |
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 975
|
Re: Block manifold and water pump after heater delete?
Quote:
Some say you can just drill a hole in your thermostat but it didn't work for me. I could drive for a little while and then my gauge would jump all over the place. I installed a bypass hose and haven't had a problem since. I even switched from a 180 thermostat with a hole drilled in it to a 195 with no hole and the gauge is still steady as a rock. Last edited by garyd1961; 03-26-2017 at 09:44 PM. |
|
![]() |
![]() |
![]() |
Bookmarks |
Tags |
coolant, heater box, plug, radiator, water pump |
|
|