Bypass Fitting

How the F**k do you get the fittings out for the bypass hose? Mine are original from 1960 and feel like there just gonna snap right off. F134 motor trying to avoid having to drill and tap the head if possible

 

Is it like a pipe fitting?
Cut it down, cut inside wall of pipe to threads (hacksaw, Dremel tool) , collapse pipe with chisel or whatever you can hammer in there. Bugger it all up and order a new intake, Or do what I did - take it to the machine shop.

 

2x on the above. Or, perhaps plenty of heat with a torch, then an internal extractor? How I removed a broken spark plug thread.

 

I used these at work . did the job 90% of time
the other 10% . did what other post said . cut and beat out with chisel


someone lost one

 

If it has a free flowing heater the bypass is not necessary or you can run the bypass to the rear of the head. Bypass is needed when there is no heater or if the heater is controlled by a shut off valve that closes completely.

 

Thanks for the reply’s. I’m gonna give it a try again tonight and see how it goes.

 

Welcome form Michigan,I have an old school square pipe extractor, you drive it in and it bites into the pipe and you can turn it out with a crescent wrench. will send it to you if it will help.

 

Have you put some penetrating oil on the outside threads to soak?

 

Some of the thread-in hose nipples are steel, and older one may be cast iron, the cast ones will break or shatter without too much force. Why are you trying to remove yours?
-Donny

 

Install a bypass hose so I can put a manual shut off on the heater

 

What valve did you use?

 

I purchased the manual valve walcks sells.

 

If you can't get the fitting out, you might consider using a different style valve. With a bypass heater control valve, water either flows through the bypass circuit, the heater or a portion through both depending how much heat you want in the heater.

CABLE OPERATED BYPASS HEATER CONTROL VALVE NEW WITH 48" CABLE | eBay

 

Last case scenario, I have burned out steel bolts from cast iron with a welding torch. You heat the steel red with the torch, turn off the gas, and let the oxygen melt the steel away, it will not melt the cast iron. Scary but can be done, I have got broken exhaust bolts out of heads that way before. Good Luck

 

Yes, Rick's technique works, but requires a lot of skill to pull it off without damage. I have tried this method a time or two with limited success. I was able to get most of the broken bolt out, but not all.
-Donny

 

After much attempt I think I’m just gonna go the bypass heater valve route much easier

 

Just an FYI regarding the bypass valve I posted. There are several vacuum operated valves available at a much lower price. Only thing there is, unless you want full bypass or full heat, a vacuum regulating value is needed to modulate the valve.

 

Using an O/A torch to remove broken bolts/fittings etc. has worked for me for 50 years, scary yes. To convince yourself. find a piece of cast iron and try cutting it with a torch. When you are comfortable with it, try it on a broken bolt or stud, concentrate on the center of the bolt/stud/fitting and work out in ever increasing circles until the whole bolt/stud/fitting is cherry red and give it a shot of oxygen, when the part being removed is hot enough, it will blow it right out. This process can be repeated, if necessary. I usually blow or pick out any debris, and run a tap in the hole. Good luck!

 

Still, skill involved. I have not too much..

 

Patience grasshopper, skill comes with practice! LOL Good luck!