This is a pretty stupid question , but when removing things under the hood that involve permenently unplugging vacuum lines (double throttle actuator for instance, ACV, etc...) what do you guys plug them up with?

 

goto home depot and get screw caps/protectors and some crazy glue....

the caps are black nylon things that fit perfect on the vacuum niples...

 

or go to auto part store and get you vacuum line caps

 

i found vacuum caps at ONE auto store, and they wanted 1$ each.... ripoff...

anyone know anywhere on the net i can buy some?

 

The rubber vacuum caps at the auto parts store are CRAP. Yeah, they seem to work well initally, but they will crack and degrade with heat, and WILL leak in the not-too-distant future.

I really wish someone would make silicone vacuum caps - that would be the perfect solution.

I've taken a number of routes to blocking off vacuum nipples. Easiest is a short piece of silicone tubing with a bolt stuck in it. Not that elegant, but it does work and won't fail. If you have 2 vacuum nipples near each other that need to be capped and they both draw from the same source, you can run a short vacuum line from one to the other, effectively making a loop. Or, go hardcore like I did on my '88 turbo and cut off the nipples and weld them shut . No leaks there!

Dale

 

Of course, then I hit up Google -

http://www.eastwoodco.com/shopping/p...&keyword=58041

Eastwood Company sells a pack of different size silicone vacuum caps. They sell them to cap up stuff when you powdercoat a part, but it should do the trick. Only thing is it's a pack with TONS of sizes, and it's $44.

Dale

 

You can get silicone vacuum caps from McMaster. Go to mcmaster.com and type in "silicone caps". They only have them in an orange-ish color but the ones I got are plyable and fit tight.

 

I got a small box from Advanced auto with something like 40 caps in it for around $6. I even used the largest size along with a bolt to block the hole in the intake elbow

 

I never had a vacuum cap go bad on my car
the only time they fail is if you try to take it off after a while and put it back on

go get some vacuum caps and put a small zip tie around each one

The welding thing does work best though thats what we did

 

Man, should have hit up McMaster-Carr .

They also list an EPDM cap that's black - temp range to 475 degrees. It was on the same catalog page as the silicone caps. Cheap too!

OK, so solutions to the problem -

- Get the McMaster-Carr vacuum caps.
- Loop two nearby same-source ports together.
- Tap the hole and put a bolt with sealant in the hole - semi-permanent.
- Weld the hole shut - permanent. Or maybe JB Weld, but I'd be afraid of it shooting off under boost.

Dale

 

Thanks guys... McMaster it is .

 

or cracking and coming in under extreme vacuum
jbweld def works for temporary but id never trust it long term although its tempting

 

For those ordering from McMaster, what sizes and how many should I get to do an entire single turbo job?

 

All Of Them!