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Discussion Starter · #1 ·
Hi all,

I am about to make an order to Rockauto and would like to also get the large plug that seals the hole behind the coil pack (where the distributor fits on first generation Escorts). I can't find it on their site, so I am hoping someone can provide a part number for it.

It's about 47mm in diameter. Does anyone know what part no. this is?
 

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Sorry to say that I dont have a part number; didnt see one in the Service Manual, nor did I find that size listed in the rockauto pages. There are so many standard sizes for the plugs, I sort of doubt Ford would have used one that was unique to them.

I might try a good auto parts store, like a NAPA franchise, and if they dont find it in the listings on their computer screen, ask them if they could look in the hard copy catalogs they have, such as the Dorman catalog. (Not all NAPA outlets admit to having the hard copies, but all of them are supposed to).

The plug you are asking about just closes off the gallery for the camshaft. The only liquid behind it would be the oil mist from the cam and valve train. It may seep oil some day, but isnt going to rust through. I try to remember to extend my finger to feel the 9 inside of the smaller plug below it, which does close off the water jacket. So far it has always felt smooth, not like the pitted surfaces of freeze plugs in the block.
 

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Discussion Starter · #3 ·
I was quite intrigued by Diablo GT's thread on using the 1.9 HO head on the 2.0 block so I'm researching all of the details of doing something like this, and plugging the distributor hole is one of them.
I had assumed that the hole is the same size on the 1.9 HO and 1.9 SEFI, but now I realize I need to double check that.

I wish Rockauto listed items like frost plugs, belts and the like by size as well as application. That would make things simpler when hobbyists make changes to stock setups.
 

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I was quite intrigued by Diablo GT's thread on using the 1.9 HO head on the 2.0 block so I'm researching all of the details of doing something like this, and plugging the distributor hole is one of them.
I had assumed that the hole is the same size on the 1.9 HO and 1.9 SEFI, but now I realize I need to double check that.

I wish Rockauto listed items like frost plugs, belts and the like by size as well as application. That would make things simpler when hobbyists make changes to stock setups.
What year was a HO head used?
 

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Discussion Starter · #12 ·
I think that's a good idea, going to a local machine shop. Of course I'll order one from them if they can do the research for me.

I spent (wasted) a fair bit of time on the Dorman site trying to find the plug. They make all these darned frost plugs, but you can't look them up. Like many websites, they have useful ways of looking up parts, like by "most popular", "alphabetic", etc. etc.

How about a listing by size? No, of course not. That would require someone to actually expend the effort to list the items that way.

Anyway I did eventually find the Dorman part number (555-038) for a 1-7/8" plug, but Rockauto says that it is 48.06mm or 1.900". That's too big for this head, I believe.

So it will miss my Rockauto order, which is okay as this is a long term project.
 

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One issue with the Dorman "online catalog", is that they mostly sell to distributors and businesses, not to the public.
I would wonder if a 48mm plug would squeeze down to a 47mm measurement, once it was installed.

When I was getting parts for rebuilding an F4EAT transmission and wanted to buy the 'shift kit ' made by Transgo, I could only get it from places on their distributors list, or places selling transmission stuff; like master rebuild kits. Even those places are used to dealing with businesses, not a hobbyist.
 

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Discussion Starter · #14 ·
I don't mind that the big companies don't sell direct to the public, I often just wish to get the technical info and part numbers and then buy from a distributor.

The hole I need to plug is 1.855", or 47.1mm. I think a 48mm would have too much crush, even a 1-7/8" plug would be twenty thousandths additional crush over the crush already designed in to its nominal size.

I think I might just knock one out of a junk head, as I can get a good shot at it via the camshaft bore.
 
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