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Removing The Bypass Hose.


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#16 nicklouse

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Posted 04 November 2019 - 03:32 PM

 

 I have a few ideas but at the moment, I'm thinking of a bypass that goes from the heater valve take off point on the head, back to the pump. This will require a different type of heater shut off valve, a T piece and a restrictor. I'm surprised no one has got to the bottom of this bypass removal before.

Pete
 

 

i've been looking into the same sort of thing as well, but it's a bit of a challenge to find a bypass valve that might be useful.  there seems to be plenty of 4 way bypass valves available and some of them cable operated, but not a great deal of choice if you only want a 3 way bypass

 

about the only thing that comes close is this one - might be possible to rig it up to work off a cable...

 

https://www.ebay.com...7-/281115826873

 

routing back to the bottom hose have been done for years.

 

adding a restrictor has been done for years.

 

taking it off the head to the top hose in the "preferred" version.

 

the reason for  doing this has nothing to do with removing the bypass but to help maintain temps around cylinders 4 and 3.



#17 croc7

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Posted 06 November 2019 - 06:34 AM

An interesting thread with lots of input and technical info WAY over my head (thanks Spider), good stuff. What I get from this discussion is that to insure good coolant circulation throughout the head, without a bypass feature on the water pump and an undrilled ‘stat is to run with the heater valve open.


Edited by croc7, 06 November 2019 - 07:26 PM.





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