TheSamba.com :: View topic

Sat Jun 07, 2025 6:15 pm

I'm trying to find plastic plugs used to seal the various openings on an engine during a build. They typically come when you order a short block from an engine builder
Any ideas for a source?

Sat Jun 07, 2025 6:19 pm

Just use tape.... blue painters for short term and duct for long term.

Sat Jun 07, 2025 6:53 pm

The Dub shop has these for long blocks

https://thedubshop.com/type-1-basic-long-block-sealing-package/

Sat Jun 07, 2025 8:00 pm

These are inexpensive.

https://www.nm-prints.com/shop/p/product-1-ydar7-e8mlb-r2y28-mers6

Sat Jun 07, 2025 8:47 pm

Try google search for "cap plugs".....

Or

https://www.caplugs.com/c/protective-plugs

Sat Jun 07, 2025 9:46 pm

use foil tape

Sat Jun 07, 2025 11:03 pm

I guess I must have done the wrong thing by stuffing clean shop towels in some things, and using blue tape elsewhere. Amazon has large assortments of the plugs. That said, it isn't like Basking Robins 31 flavors - and I''ll have an orange one, Suzie here wants a pink one, Joe wants chocolate......"

Sat Jun 07, 2025 11:12 pm

I know stuffing rags into a hole is....lets say, intuitive.
tho i really don't know why, it makes little sense when examined.

It must originate deep in the subconscious.

round plugs fit round holes, while tape works good on flat surfaces.

Mcmaster has fantastic gaffers tape, and foil tape is expensive, but it lasts near forever. Life is too short to use crappy tape :wink:

Sun Jun 08, 2025 11:39 am

Try enginequest, or
https://www.stockcap.com/

Sun Jun 08, 2025 12:33 pm

Any company/workshop fiddling with hydraulics will have plenty of different sized plastic plugs. At the previous work, we had left over boxes full of 'em.

Mon Jun 09, 2025 9:34 am

Maybe take a look at the 3D printed parts thread. I seem to remember someone there making just what you’re looking for.

Mon Jun 09, 2025 7:31 pm

McMaster-Carr would be my first guess.

Dan

Tue Jun 10, 2025 10:08 am

Amazon, they have almost every thing.