Wanted Spark Plug boots for 1/4 - 32 Plugs I need a source

[Kevlamar]

Can anyone point me to a website or supplier where i can purchase the little 90 degree angle, black rubber caps for spark plugs. I have found a chinese source for shiney stainles steel ones but that is not really what i am looking for

 

[stevehuckss396]

Most people use Dorman vacuum fittings. You can get them at an auto parts store. I'm not at my computer or I could post a picture with the part number and instructions on where to trim them.

 

[Foketry]

Here is the famous DORMAN vacuum elbow

 

[Jasonb]

I don't know if Roy has any of his clear ones left as he is scaling down the business but they are nice and compact so don't look clumsy on a model.

http://cncengines.com/ic.html
About time someone started 3D printing these in one of the flexible filaments

 

[Charles Lamont]

I made my own, to the Graham Meek design:

https://modelengineeringwebsite.com/Miniature_spark_plugs_2.html
Two pieces of Delrin held together by the brass insert. A very clever design involving some fiddly machining.

 

[Gordon]

I have been playing around with 3D printing them using TPU filament. I have made usable boots but I still have to do some more playing around and I presently have a problem with my printer. Bad heat sensor.

 

[Scott_M]

I made my own using 2 part silicon I got on amazon. Made a die set and they came out pretty good.
Post #4

The only thing I did not like was the color. In this post I added black chalk before mixing

Post #25

It would be nice to find the 2 part mix in black but I could not.

Generic search for Mold making silicone on Amazon

The stuff I used was a thick putty not a liquid. About the same consistency as chewed chewing gum. mixed easy ans set up in a few minutes.

Scott

 

[GailInNM]

If anyone is interested in molding your one boots, I did a tutorial on building and using a mold about a dozen years ago. It is at:

https://www.homemodelenginemachinist.com/threads/ignition-boot-molding.14539/
Gail

 

[mrehmus]

I don't know if Roy has any of his clear ones left as he is scaling down the business but they are nice and compact so don't look clumsy on a model.

http://cncengines.com/ic.html
About time someone started 3D printing these in one of the flexible filaments

I've done that several years ago. They work well. Printed the entire distributor less the shaft and conacts.

 

[modelbuff]

Can anyone point me to a website or supplier where i can purchase the little 90 degree angle, black rubber caps for spark plugs. I have found a chinese source for shiney stainles steel ones but that is not really what i am looking for

The following website sells the spark plug boots. microcosm-engine.com/
When you get to the website search for sparp plug protective covers. The price is $18 for 12 boots. If you have them sent the cheapest way, the package will take about 30 days to get to you.

 

[modelbuff]

The following website sells the spark plug boots. microcosm-engine.com/
When you get to the website search for sparp plug protective covers. The price is $18 for 12 boots. If you have them sent the cheapest way, the package will take about 30 days to get to you.

The website will only bring up the items if you use the words: spark plug protection cap.

 

[Gordon]

The website will only bring up the items if you use the words: spark plug protection cap.

It does not say what size plug it fits. Since they list a 1/4-32 I assume that it will fit that size.