What models & years have them?

 

How many are there, per car, typically?

 

What are they made of?

 

What shape are they?

 

What size are they? (preferably in millimeters)

 

What size is one in relation to the diameter (I.D.) of the hose it's supposed to be in?

 

Are they supposed to completely block an orifice? Or can they be found roaming around at will /w/in a line?

 

Is there ever supposed to be more than one in any vac. hose?

 

Is this too many questions about them?

They are known as "orifices" and are most prevelent on carbed engines. All years have them to one degree or another - the size of the hole in them is measured in hundredths of a millimeter. Sizes are dependent entirely on the purpose of the orifice.

 

If you have an FSM for your year it should list them and their sizes or the dealer can probably look up such info for you.

 

They are put into the end of a hose before it is slipped on to it's intended junction in order to restrict flow. They do not block the flow - they simply restrict it to a smaller size. Since building teeny-tiny hoses would be difficult and prone to breakage, etc - the orfice insert does the job instead.

 

Finding the right one's for your particular vehicle will be a matter of getting the info from Subaru or from the FSM for your car and having your hoses checked for which one's are still present so the hoses can be replaced, etc and ordering those that are missing from the dealer.

 

GD

They are known as "orifices" and are most prevelent on carbed engines. All years have them to one degree or another - the size of the hole in them is measured in hundredths of a millimeter. Sizes are dependent entirely on the purpose of the orifice.

 

If you have an FSM for your year it should list them and their sizes or the dealer can probably look up such info for you.

 

They are put into the end of a hose before it is slipped on to it's intended junction in order to restrict flow. They do not block the flow - they simply restrict it to a smaller size. Since building teeny-tiny hoses would be difficult and prone to breakage, etc - the orfice insert does the job instead.

 

Finding the right one's for your particular vehicle will be a matter of getting the info from Subaru or from the FSM for your car and having your hoses checked for which one's are still present so the hoses can be replaced, etc and ordering those that are missing from the dealer.

 

GD

 

I don't have an FSM. I imagine they are rather expensive? I hope that my mechanic's shop has one for my year & model, but then, maybe they don't since the car is so old and they just don't see enough of them to warrant having an FSM for it.

 

Thanks for the info & detail.

They are likely very cheap. Probably a couple dollars each from the dealer.

 

It would be easy enough for someone to make the one's you need if you can't get them from the dealer. It's just 6mm OD brass stock with a specific sized hole drilled in the middle. Any machinist could make one in a few minutes.

 

*edit* - you mean the cost of the FSM huh? They show up on ebay from time to time. I think it's a 3 or 5 volume set for the EA82's. To buy them all would probably be several hundred $$. Your shop probably doesn't have one unless they are very Subaru oriented - but if they are a decent shop they should be able to get the info from Subaru or buy an FSM. Ask in the wanted section and check ebay - they show up from time to time and are usually very cheap compared to new since they aren't all that desireable. I have FSM's for 1980 through 1984 and I didn't pay over $40 for any one of them. I think I may have paid around $40 for the 1984 version but it's more desireable than the others. I've paid as little as $10 for some of them.

 

GD

Edited March 23, 201016 yr by GeneralDisorder

 

*edit* - you mean the cost of the FSM huh? They show up on ebay from time to time. I think it's a 3 or 5 volume set for the EA82's. To buy them all would probably be several hundred $$. Your shop probably doesn't have one unless they are very Subaru oriented - but if they are a decent shop they should be able to get the info from Subaru or buy an FSM. Ask in the wanted section and check ebay - they show up from time to time and are usually very cheap compared to new since they aren't all that desireable. I have FSM's for 1980 through 1984 and I didn't pay over $40 for any one of them. I think I may have paid around $40 for the 1984 version but it's more desireable than the others. I've paid as little as $10 for some of them.

 

GD

 

Yes, I meant the FSM. I don't need one myself, since I don't personally work on my car. I have a source for headliner material that will look like the original.

 

Just got it back from the shop where it had been for a week. It is running like a dream. So many new things on it, it feels like a brand new car.

 

Time to start working on the interior. Need a new headliner. Some $*&$@#! broke into my car a few years ago looking for something to support a meth habit, I presume, and it looks like he took a screwdriver to the headliner, which was in pristine condition before that. I have a source for headliner material and it looks like the original perforated vinyl.

 

Vinyl on the outside of the driver's seat (vinyl-trimmed fabric seats) has split and old dried-out foam is oozing out. There for a while I thought I had the world's biggest collection of food crumbs on my side of the car. Not sure how to fix that tear so that it will stay fixed. Otherwise the interior fabrics are in pristine condition other than needing a good steam cleaning.