Jerking While Driving and... Stall

[husky drvr]

Is it necessary to have this installed? What are the benefits of keeping it? I'm going to pull it tomorrow and toss it in the Ultrasonic Cleaner.

It's an emissions device. I don't know Cali's rules.

Read those two pages and you decide.

If the inner small parts are missing or damaged, then we can discuss plan "B." Yes, the two halves can separate for cleaning.

 

[alpine_64]

Is it necessary to have this installed? What are the benefits of keeping it? I'm going to pull it tomorrow and toss it in the Ultrasonic Cleaner.

Taking it off to clean as we speak.

The PCV system other that reducing pollution that the earlier road tube setup has ( series I/II ) increased engine life. Less of an issue for non daily drivers these days... But it does help.
Getting a good flame trap is hard these days and as mentioned the pcv valve is NLA and you can't use any ocv.. they are designed for capacity and pressure...
There was discussion a while back about modern alternatives that could be close.

 

[Scotty]

It's an emissions device. I don't know Cali's rules.

Read those two pages and you decide.

If the inner small parts are missing or damaged, then we can discuss plan "B." Yes, the two halves can separate for cleaning.

Thing is, I don't have a flame trap and that hose is a 'road tube' so the emissions system isn't complete on the car to begin with and I've heard some horror stories about the Flame Traps.

I'll take off the PCV and clean it out but it wouldn't bother me to just run a road tube on it, especially if that turned out to be the problem I've been having. I've already dealt with a OPRV issue on the oil filter base and I don't need anymore 'intermittent surprises' in my life that I can control by not having it there. I don't mind added routine maintenance, I do mind having some form of reliability.

Just typing thoughts. Taking time on actions.

 

[Tim R]

On my car both the rocker cover and the tappet case vent directly to atmosphere. The car is used several times a week and covers more miles than the vast majority of Alpines do these days. I have never had any kind of a problem with this set up. If your local emissions laws mandate that you have the PCV, flame trap etc then you might not have the option to do this.
Tim R

 

[husky drvr]

Just typing thoughts. Taking time on actions.

Well, I got an eye opener this morning when I Googled "plan B."

I apologize for using the term "plan B."

My intended meaning was essentially "What the Alpine's PO did to "keep it on the road"." Not stock, but functional. Despised by some, not appreciated by most.

 

[Greggers]

The modern equivalent PCV is Standard Motor Products V100. It's about $6.50 at Rock Auto, but it cross references to just about any Ford (and Many GMs) in the 60s, so your local parts store should have them in stock.

 

[husky drvr]

The modern equivalent PCV is Standard Motor Products V100. It's about $6.50 at Rock Auto, but it cross references to just about any Ford (and Many GMs) in the 60s, so your local parts store should have them in stock.

Thanks for that part listing. I think it's the first one I've seen with the airflow in the proper direction.

 

[BEpine]

Here is the one I'm using

 

[Greggers]

Here is the one I'm using

That one’s coming up as a Subaru cross reference. Are you using a metric adapter? Or is it one of those situations where metric is close enough to Whitworth?

 

[BEpine]

No adapter, used a 90 deg fitting into the pierce weber manifold under the carb, then the pvc threaded into that. Needed a 5/8 to 1/2 hose adapter to connect it to the tappet chest cover. PVC has a stranded american thread.

 

[Tim R]

I am following this discussion with great interest. On some 1725 engines after the Alpine, Rootes did away with the tappet chest breather entirely but as far as I am aware were always forced to retain a PCV system of some sort.
I will stand to be corrected but my understanding was that the PCV was introduced as an early attempt at reducing emissions, nothing else. It was certainly not a performance development, putting warm fume filled air into the inlet manifold would reduce performance when what you actually want is a cool clean (denser) air charge. The pipe with the flame trap on feeds clean air into the crankcase via the oil filler neck in the standard set up. In effect the fumes are sucked out of one side and clean air is pulled into the other (in theory at least) as shown in the picture below. The flame trap is set so that any oil that condenses from the fumes runs back into the engine again.
If you are obliged to keep this by local laws I understand but if you do not have to do this why would you? In the UK a large number of Alpines vent directly to atmosphere via extended pipes that run to underneath the car with no PCVs or flame traps involved. This doesn't cause any problems and there is no evidence of air leak issues. The big advantage is that you get stability in the system. With a PCV there are numerous variables that cause settings to change over time (dirt, sludge, PCV piston alignment, spring tension, erratic tick-over) just look in the manual. If you can avoid all that it seems sensible to do so.
I am more than willing to be convinced otherwise, if someone can explain what advantage we would get if we went back to fitting PCVs, flame traps etc with the new Weber carb set up (it is possible to do as the curved manifold is tapped to accept a PCV beneath the carb).
Tim R

 

[BEpine]

Found this on ths internet:
Your car's PCV valve is a one-way valve attached to the crankcase that holds motor oil and produces gasses when your engine burns fuel. A PCV valve's main job is to control gas emissions and reroute any gas produced by the crankcase back into your engine's combustion chambers.
It has no effect on engine performance or fuel mileage. However, it's the longer term that is more concerning. Without a functioning PCV valve, moisture will accumulate in the crankcase. That will reduce the life of your engine oil and will accelerate the formation of damaging sludge.

 

[Scotty]

So I removed the really interesting Original PCV valve and its being ultrasonically cleaned as we speak. I plugged the manifold for the time being with a 3/4" pipe plug and have the hose venting to atmosphere for the moment. The car is still stationary but I'm running the engine to check things here and there.

I decided to really go into the Cool Glass Fuel Pump because I keep seeing tiny bubbles. Checked the line from the tanks to the pump and found that the hose could easily be spun around and the ferrule piece underneath was loose. I pulled the hose and retightened everything with the Oil Cooler Adapter and hoses conveniently in the way lol. Got it back together and fired up the Alpine after letting it sit for abit to let the spilled gas vaporize and I have no more bubbles and the idle was all out of whack on the Weber.

But here's the interesting thing: As it ran, it ran worse and worse and worse the more I let it warm up and then, all on its own, died.

Waiting on the Ignition Coil which is a long story in itself, so here's my question for today as I get caught up on all the posts about the PCV: Has anyone had an Electronic Ignition bite it and if so, what are the signs you noticed before it went out?

Mine is a Hot Spark 25D4 which is basically just electronic points.

Thoughts?

 

[Bill Blue]

Yes. Had several Fords to go out. The initial problem would be mysterious engine die, but immediately restart. The problem would get worse as time (and miles) went on. The fix for the Ford units was to purchase a new one and install it on the cool side of the firewall. Back in the day, capacitors were notorious for making a driver think he had a fuel, or fueling, problem. Don't have a clue what the modern ignition component would be. But I do believe you have an ignition, not fuel problem.
Bill

 

[hartmandm]

What is inside your PCV valve? Can you post a picture?

 

[Scotty]

Yes. Had several Fords to go out. The initial problem would be mysterious engine die, but immediately restart. The problem would get worse as time (and miles) went on. The fix for the Ford units was to purchase a new one and install it on the cool side of the firewall. Back in the day, capacitors were notorious for making a driver think he had a fuel, or fueling, problem. Don't have a clue what the modern ignition component would be. But I do believe you have an ignition, not fuel problem.
Bill

I made it a point to have a set of rotors, points, condenser and the low tension lead in a box in the center console just in case of emergency and I guess that's today, so I'm putting those back in and removing the electronic ignition in case it turns out to be the culprit, which it sure as hell sounds like now; could still be the Coil, but that'll be here tomorrow. Pain in the butt to get for some reason.

Never done Points before, but it's a good day to learn.

 

[Scotty]

What is inside your PCV valve? Can you post a picture?

I'll post pics tomorrow, my phone's been getting trashed and the camera on it finally ate it.

 

[BEpine]

Here is my PCV setup

 

[alpine_64]

I will stand to be corrected but my understanding was that the PCV was introduced as an early attempt at reducing emissions, nothing else. It was certainly not a performance development, putting warm fume filled air into the inlet manifold would reduce performance when what you actually want is a cool clean (denser) air charge can explain

what advantage we would get if we went back to fitting PCVs, flame traps etc with the new Weber carb set up (it is possible to do as the curved manifold is tapped to accept a PCV beneath the carb).
Tim R

Tim ,

As I commented earlier the PCV setup extended engine life, @BEpine quoted the system didn't impact performance or fuel consumption (or add to it) it did reduce emissions and by closing the system and returning the gases helped eliminate condensation and buildup in the engine.

A non functioning system will of course causes issues .. but that's not a reason to ditch a system, it's a reason to sort it to spec if the parts are available.

 

[Tim R]

BEpine & alpine_64 thank you for your answers. The concept of sludge building up over time is interesting and obviously something that we all want to avoid. I'm nervous about adding more complexity to a system that works so well as it is but I will look into this further.
Thanks for your answers.
Tim R