-
Hello there guest and Welcome to The #1 Classic Mustang forum!
To gain full access you must Register. Registration is free and it takes only a few moments to complete.
Already a member? Login here then!
Bypass Hose
- Thread starter hivewax
- Start date
66gt350
Active Member
It bypasses the thermostat so that when the tstat is closed the bypass allows for some coolant flow. The bypass allows trapped air to get out and reduces the build up of water pressure until the thremo opens.
More good information - http://www.clubcobra.com/forums/showthread.php?t=37757
I like the idea of eliminating the hose and drill two small holes on each side of the thermostat as was said in that thread...
I like the idea of eliminating the hose and drill two small holes on each side of the thermostat as was said in that thread...
Personally, I don't buy into the theories of eliminating the hose. I run a hi-volume pump on both of my cars. They are both mechanically driven. That hi-volume is going to put tremendous pressure on everything until the t-stat opens, without the by-pass hose. I have been driving these old Fords, pretty much for the last 20 years. I have never had a problem with a by-pass hose, and have never even heard of a problem with one.
The one guy's comment in that other thread that you could run 20-30 degrees cooler, is not only ridiculous, it would be extremely tough on the engine if it were true. My '69 runs right at 180 degrees all day, every day, even on 110 degree Sacramento Valley days. Running at 150, my engine would run like crap and I can't imagine the wear and tear of running that cold all the time.
I'll be keeping my by-pass hoses.
The one guy's comment in that other thread that you could run 20-30 degrees cooler, is not only ridiculous, it would be extremely tough on the engine if it were true. My '69 runs right at 180 degrees all day, every day, even on 110 degree Sacramento Valley days. Running at 150, my engine would run like crap and I can't imagine the wear and tear of running that cold all the time.
I'll be keeping my by-pass hoses.
A
Anonymous
Guest
I have no heater, thus no heater hoses. I plugged both ports on the water pump and eliminated the by-pass hose. I haven't had any problems with low water temps and no overheating problems either. I drilled a small hole in the t-stat to let air out and some flow of water too.
One thing; the engine runs between 200 and 160, all the time. It will run up to 200, then back to 160, not quick, but over a short time period when driving. It's been that way since day one and I've tried diff concoctions of cooling fluid and diff t-stats with no change. It doesn't bother me, but it's kinda odd.
It currently has a 180* t-stat in it.
One thing; the engine runs between 200 and 160, all the time. It will run up to 200, then back to 160, not quick, but over a short time period when driving. It's been that way since day one and I've tried diff concoctions of cooling fluid and diff t-stats with no change. It doesn't bother me, but it's kinda odd.
It currently has a 180* t-stat in it.
Thanks for the feedback, Mark. Have you thought about removing the t-stat also? Read here - https://www.fordmuscle.com/forums/all-ford-techboard/415464-small-block-water-bypass-hose-question.html#post971443
A
Anonymous
Guest
No, hadn't given that idea a thought before! Probably won't try it unless I ever have a real cooling problem.