Ford 1700 compression

[geozeitl]

Hello, getting cooped up at home and making work for myself. Decide to do some p.ms on the Ford 1700. Anyone know what is a good compression number for the cylinders. I tested them and they are at 390 psi. Reason being l get a little anti freeze coming out at times in the overflow when the engine is cold when l starti it. When its warmed up and l start it no antifreeze comes out. The head gasket was replaced about 100 hours ago. Any idea or knowledge from anyone?

 

[JC-jetro]

I dot have F-1700 compression rating but diesel runs anywhere from 275 to 400 psi so I think you are doing well getting 390 psi. what overflow are you taking about? do you see any remnant of coolant in the crankcase oil? do you see white smoke come out of the tail pipe?

JC

 

[geozeitl]

Hi Jc, the overflow l mean is the small hose coming from just below the radiator cap it runs just to open atmosphere. Just noticed it coming out during a cold start a couple of times. The coolant level doesn't seem to change and no milky color oil.

 

[Peter 315]

No over flow tank ? just the vent hose dripping to the ground, it's gonna drip the cap has a valve in it to open when to much pressure,expanding or if you had a tank to suck coolant back in to the radiator when it cools ,As long as its not blowing out your good....

 

[JC-jetro]

Hi Jc, the overflow l mean is the small hose coming from just below the radiator cap it runs just to open atmosphere. Just noticed it coming out during a cold start a couple of times. The coolant level doesn't seem to change and no milky color oil.

Like the other gentleman said, that is a vent/overflow only if the temp/pressure get high beyond 7 psi relief setting on the cap. What I did put an overflow jar to catch it.I will dig up my pic and post it again. I don't think you got an issue need fixin.

there ya go with the pic. It is just a peanut butter jar. drilled a hole just sightly less than OD of the rubber hose for a tight fit. make sure the hose goes all the way to the bottom of the jar so It can not suck air back in to the radiator. fill it 1/3 with coolant. As the temp rises beyond the spring pressure on the lid, it lifts up and belches a bit of coolant in the reservoir and as the engine cools when is turned off the vaccum caused in the radiator will suck that fluid back. In this case you will not lose any coolant. if the rubber gasket on the radiator cap is gone then it would belch out right at the cap and a bit of mess.

 

[geozeitl]

I tell you guys this web site is a big help thank you both for your knowledge and stay healthy

 

[JC-jetro]

I tell you guys this web site is a big help thank you both for your knowledge and stay healthy

You are welcome, by the way I forgot to mention that the jar is firmly affixed to the tractor frame by some high quality bailing wire for the last 10+ years. wish peace and safety for you and for all of humanity.

JC,

 

[geozeitl]

Thank you and God bless