SBC Bypass hose

[Olds Eddie]

When I installed my San Juan Engineering heat exchanger on my 5.7 SBC they required that a bypass hose be connected between the thermostat housing \ crossover on the manifold and the water pump. Since I don't run a heater, I would like to do away with this hose. Is this OK?

 

[Laddies]

Re: SBC Bypass hose

NO,The hose acts a bypass till the thermostat opens

 

[Olds Eddie]

Re: SBC Bypass hose

Wouldn't the engine coolant just warm up a little quicker?

 

[trog100]

Re: SBC Bypass hose

it wouldnt make a deal of difference to how long it takes for the engine to warm up.. not without a heater in line.. i think the idea is to stop too much back pressure being generated by the pump working against a full stop.. whether this is necessary or not i have no idea..<br /><br />trog100

 

[rodbolt]

Re: SBC Bypass hose

hello<br /> it prevents the water in the heads from boiling while waiting on the heat convection to open the t-stat and allows a more even heating of the water and metal parts. use it or not is up to you.<br /> some do it your selfers cant seem to get it right even with instructions?

 

[Olds Eddie]

Re: SBC Bypass hose

Thanks for the input. That makes since. I am not as familiar with the SBC as I am with Oldsmobile V8 engines. Olds thermostat housings have the bypass built in and so I have never had to contemplate this issue in the past. I had read some where that the bypass wasn't necessary, but usually if the instructions say to do something there is a reason. I am an ASE certified tech and self tought marine mechanic. Your never too old to learn something new if you keep an open mind.